140314567 drilling rig inspection manual

7/25/2019 140314567 Drilling Rig Inspection Manual

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Drilling Rig Inspection ManualImportant MessageThe EUB is updating publications that pre-dated the amalgamation of theEnergy Resources Conservation Board (ERCB and the !ublic Utilities Board(!UB in "##$% The &lberta Energy and Utilities Board (EUB ta'e the place of

any references to the ERCB !UB or their full names%

Ma)or revisions to EUB documents are occurring as part of regulatory re-engineering and streamlining initiatives% In some cases older publications are*ithdra*n or integrated into ne* ones% This document has not yet gone throughthe revision process% !lease consult the latest &cts and Regulations to interpretand apply legal re+uirements%



,uide to manual &bout this manualUsing the manual!olicies &eub responsibilities

ConductafetyIndustry.government involvementConducting the Inspection &rrival at *ell siteBop system re+uirements and specificationsBop controlsCre* training and cert"ficationBop mechanical test &ir shut-offs.diesel and gasoline engine spacing &ccumulator si/ing and operating policies

Bac'-up nitrogen supply0interi/ing bop e+uipmentpacing regulationsMud tan' monitoring and tripping re+uirementsBop pressure test0ell-site conditions1perator and contractor inspections0ell-site records and signsmo'ingCasino inspectionCompleting the inspection report,eneral InformationMechanical testsInspection resultsRemedial actionignatures and on-site discussionspecial *ells &ppendices& inspection reportschedule 2- blo*out prevention systems &eub *ell license

Ma3imum length of drill pipe that can be pulled *hile tripping before fluid leveldrops 45 m &ccumulator si/ing calculations - alternate methodBac'-up nitrogen calculations - alternate method &eub cre* training assessment formCre* procedures formerious deficienciesignificant deficienciesBop fluid volumes (tables courtesy of p%i%t%s% &lberta occupational health 6 safety legislation (&176sMinimum design and installation specifications for atmospheric open bottom

mud-gas separator (degasserBop modifications blo*out prevention - drilling *ith service re+uirements



1ther bop modificationspacing diagram1ilfield *aste management inspection guidelinesCoiled tubing drilling re+uirementsUnderbalanced drilling - rig re+uirements

Critical *ell drilling re+uirements8rilling blo*out prevention re+uirements modification



Alphabetical indexA &bout this manual &176 9egislationElectrical !rotection Branch 9egislation

!urpose of This Manual &ccumulator si/ing and operating policies &ccumulator Re+uirements &ccumulator Reservoir :enting &ccumulator pecifications - Table ;o% " &ccumulator :olume.!ressure ,raph - 8ra*ing ;o% <8etermining !recharge !ressure8rilling or ervicing B1! 8ata - 8ra*ing ;o% "E3ample i/ing Calculation9o*-pressure &larm ystem!recharge Re+uirements

Recharge !ump !roblemsRecording &ccumulator pecificationsi/ing Calculations (Method "i/ing Methodsi/ing Rechec's0hen lo Complete i/ing Calculations &ccumulator si/ing calculations - alternate method &eub cre* tra"ning assessment form &eub responsibilities &eub *ell license &ir shut-offs.diesel and gasoline engine spacingConfirming hut-off Test *ith 0ell-site upervisors8isengaging Clutches7andling pacing !roblemsIndividual Motor TestsReason for hut-offshut-off Re+uirements &ir shut-offs.diesel and gasoline engine spacing (cont=dhut-off Test Resultspacing for :ehicles *ithout &ir hut-off &lberta occupational health 6 safety legislation

Alphabetic indexAppendices &lberta 1ccupational 7ealth 6 afety 9egislation &ccumulator i/ing Calculations - &lternate MethodB1! >luid :olumesCoiled Tubing 8rilling Re+uirementsCre* !rocedures >ormCritical 0ell 8rilling Re+uirements8rilling Blo*out !revention Re+uirements Modification &EUB Cre* Training &ssessment >orm

&EUB 0ell 9icenseBac'-up ;itrogen Calculations - &lternate Method



Ma3imum 9ength of 8rill !ipe That Can Be !ulled 0hile TriBefore >luid 9evel 8rops 45 mMinimum 8esign and Installation pecifications for &tmospheric1pen Bottom Mud-,as eparator (8egasserample Inspection Reports

chedule 2 - 8rilling Blo*out !revention ystemserious Rig 8eficienciesignificant Rig 8eficienciesUnderbalanced 8rilling &RRI:&9 &T 0E99 ITEContact *ith 1perator=s and Contractor=s RepresentativeRe+uest by 1perator or Contractor that B1!s ;ot Be Chec'ed

BBac'-up nitrogen calculations - alternate methodBac'-up nitrogen supply

E3ample ;itrogen Calculation;itrogen Bottle Usable :olume ,raph - 8ra*ing ;o% 4;itrogen Calculations (Method " %;itrogen Calculation Methods;itrogen Re+uirementsRecording ;itrogen !articularsB1! C1;TR19Chec' :alve Installation>ire-proofing 7ydraulic 9ines>loor and Remote Re+uirementsMaster Control 9ocationManual Closing.9oc'ing 7and*heelsB1! >9UI8 :19UMEB1! MEC7&;IC&9 TETB1! 7ydraulic :alve &ccumulator and Recharge !ump Chec'B1! !REURE TETInspector=s involvement7andling Test 8eficienciesTest Re+uirementsB1! ?TEM RE@UIREME;T &;8 !ECI>IC&TI1; &ir 8rilling Re+uirements

Bleed-off 9ineBleed-off Manifold and ,augesB1! @uic' ConnectorsB1! Re+uirementsCasing Bo*l and 1utletsCasing Rams8egasser Re+uirements8ouble 8rilled B1! E+uipment8rilling tem Test Riser >lange Connections>lare 9ine

>le3ible 7oses in Bleed-off and Aill 9ines>luid Turns



Aill 9ineRemote 8rill-string !ressure &ssemblytabbing :alve and Inside B1!CC&I;, I;!ECTI1;

E3ample Calculation for !ressure Testing and Casing0ear 9oggingCasing Inspection Re+uirements9ogging the Casing!ressure Testing the CasingC1I9E8 TUBI;, 8RI99I;, 1!ER&TI1;C1M!9ETI;, T7E I;!ECTI1; RE!1RT,eneral InformationInspection ResultsMechanical TestsRemedial &ction

ignature and 1n-site 8iscussionspecial 0ellsC1;8UCTC1;8UCTI;, T7E I;!ECTI1; &ccumulator i/ing and 1perating !olicies &ir hut-offs.8iesel and ,asoline Engine pacing &rrival at 0ell iteBac'-up ;itrogen upplyB1! ControlsB1! Mechanical TestB1! !ressure TestB1! ystem Re+uirements and pecificationsCasing InspectionCre* Training and CertificationMud Tan' Monitoring and Tripping Re+uirements1perator and Contractor Inspectionsmo'ingpacing Regulations0ell-site Conditions0ell-site Records and igns0interi/ing B1! E+uipment

C1;TE;TCRE0 !R1CE8URE >1RMCRE0 TR&I;";, &;8 CERTI>IC&TI1;Conducting Cre* B1! 8rillsCre* &ssessment and !rocedures >ormsCre* 8rill Re+uirements7ands-on 8rill ;ot !ossibleInspectors Role -!%I%T%% Blo*out !revention CertificateRecording Blo*out 8rillsRig upervisor=s Involvement

CRITIC&9 0E99 8RI99I;,E



E9ECTRIC&9 I;!ECTI1; 1> 8RI99I;, RI,G,E;ER&9 I;>1RM&TI1;,UI8E T1 M&;U&9 &bout this Manual

&lphabetic Inde3II;8UTR?.,1:ER;ME;T I;:19:EME;TI;!ECTI1; REU9TMMEC7&;IC&9 TET8escription and 9ocation of B1! E+uipment ContentsMU8 ,& E!&R&T1R !ECI>IC&TI1;Minimum 8esign and Installation pecifications for &tmospheric 1pen Bottom Mud ,as eparator pecifications (8egasserMU8 T&;A M1;IT1RI;, &;8 TRI!!I;, RE@UIREME;T

&utomated MonitoringChec'ing >lo*line >lo* sensorsChec'ing Mechanical MonitorsChec'ing !:T ystems7ole->illing !rocedures and Tripping ReportsMechanical MonitorsMonitoring Re+uirementsTrip Tan' 8esign and 1perationTrip Tan' Monitoring 8uring 8rilling 1perationso1!ER&T1R &;8 C1;TR&CT1R I;!ECTI1;8aily Inspections8etailed InspectionsRecording 8aily lnspectionsRecording 8etailed InspectionsRevie*ing 8etailed Inspection >orni!!19ICIEConduct &EUB Responsibilitieslndustry.,overnment Involvement

afetyRREME8I&9 &CTI1; &ction Re+uired for erious 8eficiencies &ction Re+uired for ignificant 8eficiencies>ollo*-up to erious 8eficiencies,eneral7andling erious 8eficiencies7andling ignificant 8eficiencies1perator.Contractor Initiated Remedial &ction(ignificant 8eficiencies

1perator and.or Contractor Initiated hut-do*n(erious 8eficiencies



Recording erious 8eficienciesRecording ignificant 8eficienciesRedundant 8rilling E+uipmentS&>ET?

&M!9E I;!ECTI1; RE!1RTC7E8U9E 6 8RI99I;, B9101UT !RE:E;TI1; ?TEMERI1U RI, 8E>ICIE;CIEI,;&TURE &;8 1;-ITE 8ICUI1; &rea 1fficeInspectors ignature1n-ite upervision ignaturesI,;&TURE &;8 1;-ITE 8ICUI1; (contRecording Rig 8o*n-timeInspection Report Revie* *ith 1n-site upervisionsI,;I>IC&;T RI1 8E>ICIE;CIE

M1AI;,7andling mo'ing :iolations!enalties for mo'ingmo'ing Regulations!&CI;, RE,U9&TI1;Rigs Employing 8C Electric Motors0elding0ell toCrude 1il torage Tan'End of >lare 9ine>lame-type E+uipmentRubbish Burn !it!ECI&9 0E99,eneralBleed-off E+uipment IntegrityAic' 8etectionAic' !reventionupervisionpecific 7igh 7a/ard &reas of outheaster &lbertaUUI;, M&;U&9

;on-&EUB Users!reliminariesReferences0aiver Underbalanced 8rillingW0E99 ITE C1;8ITI1;Condensate Re+uirementsContainment of 8rilling >luids8T E+uipmentEngine E3hausts

7andling Containment and pillage !roblemsump Construction



0aste 8isposal.torage0E99 ITE REC1R8 &;8 I,;!osting 0ell 9icense!osting ,eological !rognosis.0ell Control 8ata (stic' diagramsRecording and Chec'ing 8eviation urveys

Recording 8aily Mechanical TestRecording 1perator and Contractor InspectionsRecording !ressure TestRecording 0ee'ly 8iesel Engine Testhop ervicing Records for B1!s and >le3ible Bleed-off and Aill-line hoses0arning igns in 7 &reas0I;TERII;, B1! E@UI!ME;T7eating Re+uirementsUse of 8iesel >uelUse of ,lycol



repeat electrical problems *ould be follo*ed up by &lberta 9abour as they*ill have copies of ah such reminders for*arded to them by &EUBinspectors%

Bac%ground

&lberta 9abour staff does not normally inspect electrical systems on rigs afterthe rigs are in service% They are concerned that rigs *ith their constant movingare prone to electrical system deterioration% &EUB staff though they have noformal training in electrical systems inspects rigs at regular if infre+uentintervals% It is felt that &EUB staff could help &lberta 9abour by remindingpersonnel at rigs *ith +uestionable electrical systems of their responsibilitiesand +uestionable electrical systems of their responsibilities and informing &lberta 9abour% &EUB has no )urisdiction to enforce any re+uests for remedial*or' on electrical systems%

Goals o this Agree&ent

"% To help ensure that electrical systems on rigs are maintained according tothe afety Codes &ct

<% To coordinate government inspectionsF efficiently reduce duplication andfacilitate government agencies= aid to each other%

4% To emphasi/e the fact that &EUB staff *hile *illing to help are not trainedspecialists iii the area of electrical inspections and that in no *ay shouldtheir inspection be construed as a complete and thorough inspection of theelectrical system%

G% To ensure that it is understood that by this *illingness to help the &EUB isin no *ay assuming )urisdiction of electrical systems%

$% To ensure that the &EUB and its staff are protected from the potential ofcourt actions as a result of trying to help out a member of our governmentfamily

Purpose o Rig Inspections'he Inspectors Role

0here it becomes obvious that such commitment is lac'ing and an opendisregard for the Board=s re+uirements is displayed a system of escalatingconse+uences *ill be imposed by the &EUB% This *ill be in 'eeping *ith ourfirm but fair= approach to all our customers%

In an effort to be efficient in the use of the Board=s resources the follo*ingcriteria may be used in determining *hich rigs *ill be inspected%() Inspection histor* o the Rig Contractor and !perator !reviously noted unsatisfactory items or re+uests for remedial action should befollo*ed up%+) !n Site Assess&ent o Drilling !ccurrence inor&ation &re there any instances of 'ic's blo*s blo*outs or a history of hole problems(high potential for lost circulation or abnormally pressured formationsdocumented for the area the rig is *or'ing in and are the on site personnela*are of them%

,) Appro-als. Directi-es



&re there any ne* policies or re+uirements *hich may need to be addressedduring the inspection%/) 0ocusThe inspector should thoroughly evaluate e+uipment procedures and operatingpolicies on site including

H cre* training 'ic' prevention detection and control%H 0ell control information - lea' off gradients Ma3imum &llo*able Casing!ressure (M&C!%H drilling program%H offset *ell dataH ,eological prognosis e3pected tops and problem /ones and minimum mud*eights to control the e3pected formation pressures%

The inspector should also be receptive toH Concerns and +uestions regarding regulations or re+uirements%H providing additional clarification or information as re+uested%

&n inspector should be prepared to initiate additional discussion or re+uestadditional cre* training if during the inspection there is evidence it is re+uired%

Industr* RoleThis is achieved by the implementation of"% Internal inspection compliance programs and being a*are of their company &EUB inspection record and ta'ing appropriate action *here necessary%<% 1ngoing training of *ellsite personnel% >or safety *ell control ande+uipment%4% Informing on site personnel of potential hole problems sensitiveenvironmental and public issues in order to ensure appropriate responses areimplemented%G% Cooperation *ith the &EUB government and public by the open e3change ofdialogue to address areas of mutual concern%

Conducting the inspectionArri-al at 1ell site

Contact *ith 1perator=s and Contractor=s Representative"% 0henever possible the inspection should be conducted *ithout prior notice

given to the operator or contractor%<% Upon arrival at the site contact the Rig Manager (toolpusher and thecompany representative%- If unavailable locate the 8riller 4% Ta'e time to get ac+uainted%G% E3plain the purpose of the visit$% 8etermine if hole conditions are safe to conduct a full inspection%D% If the Rig Manager and.or the company representative re+uest that theblo*out preventers (B1!s not be chec'ed because of the current operationuse discretion in deciding *hether or not to proceed *ith the inspection%- It is advisable to respect the *ishes of the rig supervisors% &n abbreviated

inspection may ho*ever still be conducted%



- Consult *ith your supervisor if there is concern about conducting a fullinspection%

1perations that may be cited are- 8rill-stem testing

- 9ogging- >ishing- Tight or sloughing hole conditions- Changing over a mud system (*hen stopping circulation *ould seriouslydisorient the brea'-over- Coning- Circulating samples to surface- 8rill string position in the *ellbore on directionally drilled or hori/ontally drilled*ells% (!ipe may become stuc' if circulation is interrupted across deviatedsection%

B!P s*ste& re2uire&ents and speciications"% Refer to &ppendi3 "5"5 - chedule 2 J Blo*out !revention ystems todetermine the re+uired type and pressure rating of the B1!s%<% The casing bo*l flange must be an integral part of the bo*l and the bo*lmust have at least one side outlet and valve%- The side outlet must be flanged or studded in Classes : and :I B1! ystems%- & valve is not re+uired on the bo*l *hen a drilling spool e+/Gpped *ith theappropriate valve.valves has been installed bet*een the casing bo*l and thelo*er pipe rams%- Threaded outlets on Classes " II III I: are acceptable% The ma'e up of theseoutlet nipples and valves should be periodically chec'ed for-tightness after drillout of the casing shoe% &ny time a threaded connection is bro'en after drill out apressure test must be conducted% (It may be necessary to set a plug or pac'erin the surface casing to conduct pressure test%4% It is a common oversight for an operator.contractor to install a "G-M!a casingbo*l on a Class I: *ell *hich is to be drilled to a depth e3ceeding "255 m% Thiserror is classified as a serious deficiency and the bo*l must be replaced%- 8rilling conditions must be stable before an operator.contractor should beas'ed to underta'e a bo*l change out%- If the surface casing shoe has been drilled out a bridge plug may have to berun inside the casing to secure the *ell and to enable a pressure test%

- ,enerally both the operator and contractor *ill be cited for the deficiency%- The contractor may not be cited if it can be determined that the contractordiscussed the deficiency *ith the operator but the operator chose not to ta'ecorrective action%- Casing bo*l data must be available upon re+uest

Double Drilling B!P E2uip&entG% The double drilling of B1! e+uipment (B1! body B1! flanges adapterflanges or spools is acceptableK ho*ever the follo*ing policies are recogni/edby industry- 8ouble studding the body of a B1! to accept t*o si/es of &!I flanges

(e+uipment *hich may have a lo*er pressure rating does not result in aderating of the preventer%



- 8ouble drilling flanged B1! e+uipment to accommodate connections to other &!I e+uipment (e+uipment *hich may have a lo*er pressure rating results ina derating of the flange to the lo*er *or'ing pressure%- In many cases derated flanges *ill be acceptable for the particular class of*ell being drilled% 7o*ever if a double drilled flange is to be used in an

application re+uiring a higher pressure rating the operator must provideevidence from either the manufacturer or a professional engineer (!% Eng% thatthe flange is certified for the higher pressure (e+uipment identification must beestablished *ith certification document%- If certification cannot be provided during the inspection the operator mustprovide the necessary certification *ithin <G hours% If this cannot be done aerious deficiency must be recorded on the rig inspection report and operationssuspended%

B!P 3uic% Connectors$% @uic' connectors may be used to connect various flanged B1!

e+uipment%- &7 clamp type connections must be &EUB approved or suitable for theservice in use%- Clamp-type connections can save many man-hours *hen connections mustbe repeatedly made up and bro'en% uch connections may also be used in thebleed-off and 'ill line and in the bleed-off manifold%

Casing Ra&sD% If casing is being run the pipe rams do not have to be replaced *ithcasing rams% This matter is left to the operator=s discretion%

0lange ConnectionsL% 0here flange connections are re+uired in the B1! system ensure thatthey are properly designed% >langes mated to bac'-*elded threadedconnections are only acceptable if the connections have been stress relieved%This generally re+uires shop fabrication%- ee item G for method of handling deficiency%>lange connections.stress relieving of bac' *elded threaded connections doesnot apply to >ield >abricated Rubberi/ed coating shoc' hose ends used in thebleed off line% Ensure &!I and &%%M%E% standards are utili/ed%

Bleed4o $ine2% The bleed-off system up to the last valve on the manifold must have a*or'ing pressure e+ual to that of the B1! system%The bleed-off system is defined as the line from the B1! stac' to the end of theflare lime%#% The line off the drilling spool shall contain t*o flanged valves and one of thevalves must be hydraulically operated%The position of the hydraulic control valve (*hether the inner most or outsidevalve is left to the operators discretion% :alve handles must be in place%"5% teel s*ivel )oint connections may not be used in the bleed-off system%(Chi'sans is a common term used for these type of connections%

0luid 'urns



""% &ll directional changes in the bleed-off system (including the flare line mustbe made *ith right-angle connections constructed of running tees and crossesbloc'ed on fluid turns%

Drill4ste& 'eat Riser

"<% & drill-stem test riser may be installed in the bleed-off system provided aproperly designed connection is employed- & manufactured tee or flanged connection is acceptable%- addle-type fittings or nipples *elded directly to the bleed-offline areconsidered inappropriate% Riser deficiencies should not be mar'ed asunsatisfactory during the initial inspection% 7o*ever a comment must be notedon the inspection report that the connection must be changed before the ne3thole%- & significant deficiency *ill result if the change did not ta'e place before thene3t inspection%

Bleed4o Maniold and Gauges"4% &ll cho'e and valve handles must be installed%"G% & gauge must be installed or readily accessible for reading the casingpressure at the cho'e control location%- The manifold gauge should have a range of 1 - "5 $55 '!a or less%- & lo*-pressure gauge may be used but it must be valved to preventoverpressuring%- & higher ranged gauge may be used provided it has readable increments of<$5 '!a or less% & higher ranged gauge *ill be necessary *hen intermediatecasing is set%

Re&ote Drill4string Pressure Asse&bl*"$% &n accurate pressure gauge and other necessary e+uipment must beinstalled or readily accessible for installation on the standpipe (or other suitablelocation to provide the drill pipe pressure at the cho'e control location%- The system may consist of a pressure sensor mounted on the standpipe anappropriate length of hydraulic hose to reach the manifold building and apressure gauge at the cho'e manifold%- The assembly may be disconnected and hung in the doghouse or any otheraccessible location *hen not iii service%- The re+uired assembly must also be available for installation at the rig

manifold even if a remote cho'e and pressure monitoring e+uipment is inservice%- The cho'e operator must be able to read the drill pipe pressure *hen openingthe cho'e- control%- The inspector should ensure that the rig cre* automatically assembles thise+uipment as part of their blo*out drill (only if e+uipment not already installed%

Degasser Re2uire&ents"D% Mandatory in Class III *ells and above% & degasser (mud-gas separatormust be ready for service (fully connected and either emerged in drilling fluid orB1! drill must include cre*man assigned to fill tan' *hen a remote degasser is

used *henever drilling fluids are being circulated from a mud tan'%



- & visual inspection of he degasser inlet line unions must be conducted prior loand at regular intervals after they have been made up% These visual inspectionsmust be documented in the lour report%

"L% The degasser must be either an &tmospheric 1pen Bottom type or an

enclosed (atmospheric or pressuri/ed design% :acuum degassers or othertypes designed to remove solution gas are not considered acceptable%"2% &tmospheric 1pen Bottom degassers must meet the design and installationspecifications as set out in &ppendi3 "5L5 of this manual%"#% ince enclosed degassers are not commonly found on drilling rigs designand installation criteria is not provided in &ppendi3 "5L5%- There are several proprietary designs available and on the mar'et for suchdegassers% !urchaser.users should vcri" *ith the manufacturer that its productmeets acceptable design criteria (considering the type of drilling the e+uipmentis to be used for%- If this degasser design is encountered during an inspection its design

specifications should be discussed *ith the operator contactor and the Board=s8rilling and !roduction 8epartment

5ill $ine<5% The 'ill line must have the same pressure rating as the B1! stac'% (>romthe bleed-off spool connection to last valve on the 'ill line side as sho*n inection "5"5 of chedule 2% The remainder of the system (to*ards mud pumpshall be valved so that it may be isolated% & threaded union connection isacceptable at the location of the tie-in point of the pumping unit% & steel s*ivel )oint connection may be used bet*een the pump and the isolation valve% Theuse of a chec' valve in the Aill 9ine is left to the operator=s discretion%<"% The 'ill line must be hoo'ed up at all times or be very easily connected byma'ing up one connection%

0lare $ine<<% &ll flare lines (e3cept degasser vent lines must be ade+uately secured%8evices suitable to the soil conditions must be used% e%g% sta'es cement orfilled *eights or a properly designed clamp and interconnecting cablemechanism%- & minimum of G sets of sta'es or securing devices should be used% The firsttie-do*n should be positioned immediately do*nstream of the pipe rac's and

every "5 m thereafter% 8iscretion must be used *hen a man building is locateddo*nstream of the pipe rac's (securing devices at "5 m intervals do*nstreamof the manifold building *ould be ade+uate%- The securing of the flare line to the pipe rac's is optional%- The end of the lime should be secured as close as possible to the flare pit%- Ideally the flare line should be laid in a straight lineK ho*ever a slightcurvature of the line is acceptable providing a fluid turn= *ould not be re+uiredto ma'e this same direction change%- The line may contain direction changes provided they are made in accordance*ith ection <"5(""%- &n elbo* must not be used at the end of the flare line to direct *ell effluent

into the pit%



- & visual inspection of the flare line unions must be conducted prior to and atregular intervals after they have been made up% These visual inspections mustbe documented in the tour report as per I8 #<-"%

0lexible loses in Bleed4o and 5ill lines

<4% & fle3ible hose may be installed in the bleed-off or 'ill line provided the hose- has a *or'ing pressure e+ual to that of the B1! system- has the same internal diameter as the steel line- has factory-installed connections (see ection <"5 item L for clarification- is sheathed to provide an ade+uate fire-resistant rating (only if under sub-structure- does not contain bends *ith a radius less than the manufactures specifiedminimum bending radius (hose must not be crimped- is secured to prevent stresses on connecting valves and piping- is protected from mechanical damage

Stabbing 6al-e and Inside B!P<G% The rig must be e+uipped *ith a full opening stabbing valveK valve operating*rench and an inside B1! *hich is capable of stopping bac'-flo* up the drillstring%- The necessary cross-over subs must also be available to enable the ma'e-upof the stabbing valve and inside B1! *ith drillpipe drillcollars tubing or anyother *or'ing tubulars in the *ell%<$% The stabbing valve inside B1! and associated tools and subs must bereadily accessible operable and conform to the follo*ing- Readily accessibleF means the cre* should be able to find this e+uipment*ithout any searching *hatsoever%- 8uring cold *eather these items must be 'ept on a stand in the doghouse% In*arm *eather they may be 'ept on a stand on the rig floor or suspended andcounterbalanced in the derric'%- The stabbing valve must be 'ept in the open position% (& serious deficiencye3ists any time the stabbing valve is found to be closed%- The inside B1! must be 'ept *ith the stabbing valve but must not be made-up% The use of= a float in the drill string does not eliminate the need for an insideB1! to be *ith the stabbing valve%- The valves must be e+uipped *ith handles if more than one person isnecessary to handle the valve% &lternatively an open hanger cap may be used

but all hoisting assemblies or handles must be removable to allo* the valves tobe stripped into the *ell

0lo1 ' or !ther Drill through Co&ponents<D% 8rill through components and >lo* T=s positioned bet*een theuppermost B1! and the rotary table must be removable *ith pipe or tools in the*ellbore (either t*o piece construction or si/ed to be pulled through the floor*ith the table bushings removed%If a rotating head component is in place then operators must consider *ellcontrol.procedure options as these are not removable% (ignificant deficiencye3ists if no procedure in place%

Drilling 1ith a Ser-ice Rig



<L% 1perations involving drilling *ith a service rig may be re+uired to conformto all or part of the drilling regulations and re+uirements as outlined undersection G part < of ,uide ,-44 &pplication for a 0ell 9icense (see &ppendi3"5L$%

Air Drilling Re2uire&ents<2% Recommendations for Class I &ir 8rilling should include &ll annular preventer of some type must be installed% This *ould be re+uired toobtain full closure of the *ell should the rotating head fail *hile the reservoir isopen *ith pipe in the hole%The accumulator system must include accumulator bottles of sufficient volumeto meet si/ing re+uirements%The blooey line si/e must be a minimum "$< mm to conform to present drillingpolicy%

Recommendations for Class II &ir 8rilling must include

&ll re+uirements and recommendations outlined in Class " plus a *or'ing spooland a set of pipe rams%

B!P C!7'R!$S

0loor and Re&ote Control8 Re2uire&ents"% There must be both floor and remote controls for each blo*out preventer andhydraulically operated valve installed% The controls must be properly installedcorrectly identified and sho* function operations (cg% open-close% The remotecontrols need only be capable of closing the B1!s and opening the hydrauliccontrol valve%<% The floor controls must be located near the 8riller=s position and be easilyaccessible it is satisfactory for the controls to be located on the sub-base do*na fe* stairs or a fe* steps a*ay% Use discretion%4% The remote controls must be- located at least "$ m from the *ell- shielded or housed- Readily accessible%

Master Control $ocationG% It is preferable but not mandatory that the main hydraulic controls be located

at the remote panel and the au3iliary controls be located on the rig floor or nearthe 8rillers station%

Chec% 6al-e Installation$% & chec' valve must be installed in the B1! hydraulic system for all *ellclassifications to allo* for a change out of the charge pump in the event that apump failure occurs after the system has been energi/ed%- 1n a Class I B1! system the chec' valve should be located bet*een thecharge pump and the B1!s%- &h other B1! systems should have the chec' valve located bet*een theaccumulator charge pump and the accumulator itself%

0ire4prooing "*draulic $ines



D% &ll non-steel hydraulic B1! control lines located under the rig substructuremust be completely sheathed *ith fire resistant sleeving%

Remote - refers to distance ;1T the main or au3iliary controls referred tounder Item ;umber G%

Manual Closing9$oc%ing "and1heelsL% Chec' *hether or not the ram-type preventers have automatic loc'ingfeatures% If they do not then a closing.loc'ing device must be installed or bereadily accessible- Manual loc'ing rams are easily identified as the manual loc'ing shafts e3tendthrough the cylinder head permitting the installation of loc'ing hand*heels% elf-loc'ing rains have enclosed ram shafts%- & single hand*heel is acceptable as the ram closing device%- & ratchet and soc'et set is considered a suitable replacement for ahand*heel%

- Readily accessibleF means he cre* should be able to find the closing device*ithout any searching *hatsoever% (May be stored in the sub or at a locationnearby as long as the cre* 'no*s their location%- Ensure handles can operate on the Rams (not obstructed by Aelly oc' orbeams% If obstructed ensure soc'et or alternate e+uipment *ill *or'% Mar' asU;&T sign only if no suitable bac' up *ill *or'%

Conducting Cre1 B!P Drills"% & cre* B1! drill must be conducted during the inspection provided it isoperationally prudent to do so%

Rig Super-isor:s In-ol-e&ent<% The Rig Manager and.or the operator=s representative should be re+uested toco-ordinate the blo*out drill follo*ing the procedures outlined in &ppendi3"5G5%- The alert should be initiated by the Rig Manager or the operator=srepresentative%- & horn is the re+uired method of alerting the cre*% & ignificant deficiencye3ists if the rig does not have a horn but the cre* responds to an alternatealert% & erious deficiency e3ists if the horn is not operable and the cre* doesnot respond to any form of alternate alert%

Drill Re2uire&ents4% The drill conducted should determine the cre*s ability to detect a *ell 'ic'(see ection <$$(4 for 'ic' influ3 monitor testing *hen using mud tan's andperform a shut-in for the operation in progress at the time of the inspection%- The intent of this chec' is to emphasi/e the &EUB goal to educate survey thecre*=s a*areness of 'ic' detection and their control capability in order to reducethe number of *ell control incidents%G% The cre* should be capable of applying *ell control procedures for foursituations a shut-in *hile drilling tripping tripping *ith drill collars opposite theB1! stac' and *hile out of the hole%

Inspector:s Role



$% The inspector=s role throughout the drill should be that of an observer unlessit is apparent that the drilling supervisor needs some assistance in establishingthe format of the drill% The inspector may also +uestion the cre* about specific*ell control procedures%

Cre1 Assess&ent and Procedures 0or&sD% Use the Cre* Training &ssessment >orm and the Cre* !rocedures >orm(s*hen observing drills%- The Cre* Training &ssessment >orm (&ppendi3 "54$ only serves as a guideand is not to be left at the rig% It may be appropriate to retain the form in theoffice files if cre* t is found deficient%- The Cre* !rocedures Chart(s (&ppendi3 "5G5 only serve as guides duringthe inspection%

"ands4on Drill 7ot PossibleL% If adverse hole conditions *ill not permit a hands-onF type drill have the Rig

Manager and.or operator=s representative conduct a verbal drill in thedoghouse%2% If the cre* is not properly trained operations must be suspended untiladditional training is provided% The necessary training should be provided by theon-site supervisorsK ho*ever the inspector may *ish to offer some assistance%

Recording Blo1out Drills#% Chec' the tour sheets to ensure that a blo*out drill is conducted by eachcre* a minimum of once every L calendar days%- & drill fre+uency of once.hole is ade+uate for holes drilled in less than L days%- & drill must be conducted by the cre* on tour before drilling out the surfaceintermediate or production casing shoe%- 1ther cre*s must conduct drills on their first lour after drill-out%- >or critical *ells an additional B1! drill must be conducted *ithin the <G-hourperiod prior to the penetration of the critical /one%

P)I)')S) Blo1out Pre-ention Certiicates"5% The 8riller must possess a valid >irst 9ine upervisors Blo*out !revention(Aic'-Control Certificate issued by !%9T%% (Certificates e3pire on the datereferenced on the card and are invalid thereafter%- The inspector should re+uest to see the 8rillers certificate to ensure that

he.she does in f have one and secondly to ensure that it has not e3pired%- If the 8riller claims to have a valid certificate but is unable to produce it duringthe inspection the inspector must ta'e the necessary follo*-up action tosubstantiate the 8riller=s claim (this may be done either during or immediatelyafter the inspection%- It is a serious deficiency if the 8riller has never held a certificate and the rigmust be shut do*n until such time as a +ualified 8riller ta'es over operations%- & ignificant deficiency e3ists if the 8riller=s certificate has e3pired &deficiency letter must be send to both the operator and contractor re+uesting ane3planation for the deficiency%""% & person possessing a valid econd 9ine upervisors 0ell Control

Certificate must be readily available to the *ell site to assist the drilling cre*



*ith *ell control operations% (Certificates e3pire on the date referenced on thecard and are invalid thereafter%- Readily availableF means *ithin < hours driving time%- The person designated should be familiar *ith the day-to-day drilling activities%- The individual should be contacted to determine their a*areness of their

responsibilities and their certification details%- 0hile drilling Class III I: : :I *ells and potential - hydrocarbon bearing/ones have been penetrated either the rig manager or the licenseeNsrepresentative must be on site *hile tripping in or out of the *ell% They shallposses a valid econd 9ine upervisors 0ell Control Certificate% (""#<-"ection "%$%"%7o*ever if it becomes necessary to ma'e an unscheduled trip out of the hole*hen neither of these individuals is present the trip may commenceimmediately after contacting the +ualified individual(s% This individual shall thenreturn to the *ell site immediately%

B!P MEC"A7ICA$ 'ES'

B!P. "*draulic 6al-e. Accu&ulator and Recharge Pu&p Chec%"% 7ave cre* drain the B1! stac' (summer and *inter% 9eave the casing bo*lvalve open during the function test% Cre* may also *ish to close the manualvalve in the bleed-off line during *inter operations to ensure no fluid enters theline or that no antifree/e is lost from the manifold line if used<% If no drillpipe is in the *ell *itness the function of the blind ram% (To theclosed position form the floor and remote control positions%- &fter chec'ing the blind rams *ith no pipe in the hole have the cre* run asingle )oint in order to chec' the annular and pipe rams%4% >rom the floor controls close the pipe ram (both sets if t*o re+uired or inuse% Close the annular open the hydraulic valve% %;ote closing times andproper function and element conditions%- Return rams and annular to open position close the hydraulic valve% (Theallo*ed closing time for rams is 45 seconds D5 seconds for annulars up to 4$5mm and #5 seconds for annulars of over 4$5 mm% &llo* the accumulator tofully recharge%G% >rom the remote control position have the cre* shut do*n the accumulatorrecharge pump%- 1bserve and record (he accumulator operating pressures (before function

test%- Close the pipe rams (both sets if re+uired or in place%- Close the annular%- 1pen the hydraulic valve%- :isually chec' the position of the rams annular and hydraulic valve%- 1bserve and record the accumulator pressure (after the function test%- & serious deficiency automatically e3ists if the pressure after the function testis 2G55 '!a or less%- If the pressure is approaching but ;1T belo* 2G55 '!a an accumulator si/ingcalculation must be performed as the annular *as closed on the drillpipe%Calculations *ill indicate if the accumulator has additional useable fluid

available (at a minimum pressure of 2G55 '!a or above to close the annularelement on open hole% If it does not a serious deficiency e3ists%



$% 7ave cre* start up the recharge pump% The accumulator must be recharge tothe original starting pressure *ithin $ minutes% ee ection <4$ Item # if this isnot achieved%D% 7ave Cre*- open the annular and pipe rams and close the hydraulic valve%

- 1pen the manual valve on the bleed-off line if it *as closed for the test%- Close the casing bo*l valve%- remove the single )oint of drillpipe from the *ell if one *as run in order toperform the tests%- 1bserve and record the accumulator pressure (after the function test%- & serious deficiency automatically e3ists if pressure after the function test is2G55 '!a or less%- If the pressure is approaching but ;1T belo* 2G55 '!a an accumulator si/ingcalculation must be performed as the annular *as closed on the drill pipe%Calculations *ill indicate if the accumulator has additional useable fluidavailable (at a minimum pressure of 2G55 '!a or above to close the annular

element on open hole% If it does not a serious deficiency e3ists%$% 7ave cre* start up the recharge pump% The accumulator in must be rechargeto the original starting pressure *ithin $ minutes% ee ection <4$ Item # if thisis not achieved%D% 7ave Cre*- 1pen the annular and pipe rams and close the hydraulic valve%- 1pen the manual valve on the bleed-off line if it *as closed for the test- Close the casing bo*l valve- Remove the single )oint of drillpipe from the *ell if one *as run in order toperform the tests

AIR S"U'4!00S9DIESE$ A7D GAS!$I7E E7GI7E SPACI7G

Reason or Shut4osThe purpose of air shut-off is to prevent diesel motors from running uncontrolledin the event of a natural gas blo* from the *ell% ince diesels are compressionignition engines fuel shut-offs *ill be ineffective in stopping the engine if it isdra*ing a combustible air-gas mi3ture into its air inta'e%

Shut4o Re2uire&ents"% Ensure that any diesel engine *ithin <$ m (L$ feet of a *ell is e+uipped *ith

- &n air inta'e shut-off valve e+uipped *ith a remote control readily accessiblefrom the 8riller=s position or - & system for in)ecting an inert gas into the engine cylinders e+uipped *ith aremote control or - & suitable duct so that air for the engine is obtained at least <$ m (L$ feetfrom the *ell

Conir&ing Shut4o 'est 1ith Well4site Super-isors<% Before conducting a mechanical test of the air inta'e shut-offs consult *iththe Rig Manager and.or operators representative as to possible problems (holeproblems inability to restart motors etc%

Disengaging Clutches



4% 0hen conducting the test ensure that the engines are idling and the clutchesare disengaged so that all engines *ill have to stop independently%

- It is a good chec' to ensure that fuel shut-offs are ;1T being operated inplace of air inta'e shut-offs%

Indi-idual Motor 'estsG% The motors may be tested individually by holding the air shut-offs open%

- This may alleviate possible problems of engines failing to restart%

Shut4o 'est Results$% The motors must po*er do*n and stop rapidly% The motors must stop for thetest to be successful J engine lugging is not acceptable%

Spacing or 6ehicles

D% :ehicles (8iesel or gasoline are not allo*ed *ithin <$ m (L$ feet of a *ellduring drilling operations% 7o*ever vehicles essential to operations mayoperate *ithin this distance provided the *ellsite supervisor first assesses theon safety%- This policy applies in instances *here a vehicle may be unloading suppliessuch as *ater fuel or tubular goods%- It does not apply *here a vehicle may be performing an operation on the *ell(e%g% po*er tongs Iogging or 8T units%- :ehicles such as po*er tong units that must remain operational *hile on leaseshould either be e+uipped *ith an air inta'e shut-off (if using a diesel motor orhave enough hydraulic hose to allo* a distance of <$ m from the unit to the *ell- Units such as 8T vehicles that do not need to be running other than gettingthe vehicle in or out of loading position should either be par'ed <$ m (L$ feetfrom the *ell *hen not in use or shut off%

"andling Spacing Proble&sL% pacing problems relating to Item D above do not constitute an unsatisfactoryrig inspection% & comment that a problem e3isted and that it *as correctedshould be made on the inspection report%

pacing e3emptions may be granted by &rea 1ffice staff provided the operator

discusses its spacing needs *ith the appropriate &rea 1ffice beforecommencing%

ACCUMU$A'!R SI;I7G A7D !PERA'I7G P!$ICIES

Accu&ulator Re2uire&ents"% The accumulator must have sufficient usable fluid available at a minimumpressure of 2G55 '!a to close the annular preventer and pipe rams and opensthe hydraulic control valve%The accumulator must be- 9ocated al least "$ m from the *ell% (!referably *ith the remote control panel%

- hielded or housed%



- Readily accessible% (Immediately available for determining precharge pressureor repairing%- If t*o sets of pipe rams are re+uired or an additional ram has been added andis in use as RE8U;8&;T e+uipment (see ection 4<5 (<G <$ then theremust be additional useable fluid available to close the e3tra set of rams% (Unless

this redundant e+uipment is Ioc'ed out%

When to Co&plete Si<ing Calculations<% &ccumulator si/ing calculations must be completed during the follo*ingsituations- >irst time inspection of a rig%- &ny time a function lest as outlined in ection <<$ cannot be completed%- &fter a function test has resulted in a pressure drop *hich approaches 2G55'!a (#555 '!a or less *ould be considered approaching 2G55 '!a%- ee Item $ of this ection or &ppendi3 "5<$ for si/ing methods%

Recording Accu&ulator Speciications4% 8etermine and record the accumulator system=s ma'e number of bottlescapacity design pressure and operating pressure (upstream of any regulators%The operating conditions of the accumulator must not be changed prior toconducting the B1! mechanical test or the accumulator si/ing calculations%- &ccumulator specifications should be available at each rig and this includesspecifications for homemadeF models% 1perators and.or contractors should beencouraged to complete a B1! 8ata sheet similar to 8ra*ing ;o% " on page $%- 1perators of homemadeF models must affi3 a tag to their units indicating themanufacturer *or'ing pressure and capacity%- Reminder ubtract one U gal from nominal si/e of each accumulator bottleto account for displacement of bladder or float assembly (see Table ;o% " onpage # for accumulator specifications%- Reminder &ccumulators are si/ed in U gala% Use the follo*ing forconversions

US gals x ,)=>?/ liters

Deter&ining Precharge PressureG% If *ell conditions allo* and it is safe to do so have the Rig Manager chec'the precharge pressure on each accumulator bottle% Record pressures%

- & gauge and the necessary fittings must be readily available to determine thepressures%- &nother method of determining precharge is available if the *ell-sitesupervisors are concerned about the do*n-timeF necessary for determiningindividual pressures or if a proper gauge and fittings are not available% 7o*everthis method *ill only indicate the lo*est precharge in service and it also has anumber of other shortcomings *hich could create problems for lesse3perienced inspectors% It should only be used as a last resort for calculationpurposes%

Method

&% hut do*n recharge pump%B% 8epressure accumulator%



C% Restart pump%8% 1bserve first pressure obtained on accumulator gauge - this is the lo*est

precharge pressure available% It should ta'e only a fe* seconds to obtain this pressure%

Si<ing Methods$% T*o methods for calculating accumulator si/es are provided in the manual%- Method " sho*n in item D is the preferable method to use during inspectionsbecause of its simplicity%- The &lternate MethodF sho*n in &ppendi3 "5<$ re+uires more detailedcalculations%- 8ra*ing ;o% < (page L in Method " is derived from the e+uations sho*n in &ppendi3 "5<$%

Si<ing Calculations @Method (D% Complete usable fluid volume calculations using 8ra*ing ;o% < and the

follo*ing procedures- Using pressures obtained in items 4 and G and 8ra*ing ;o% < follo*accumulator operating pressure slope on dra*ing (go beyond ape3 forprecharge less than 2G55 '!a until it intersects *ith the appropriate verticalprecharge pressure line%- Read dra*ing=s left vertical a3is to determine the percentage of totalaccumulator capacity *hich is considered usable at the current operatingpressures%- Calculate usable fluid using percentage determined%

Usable 0luid Per cent x Acc Cap

- 8etermine the total fluid volume re+uired to close the annular pipe rams andopen the hydraulic valve also include the volume re+uired to function anyredundant B1! e+uipment in use (i%e% not loc'ed out% (ee &ppendi3 "5$$%- Compare this volume re+uired *ith the volume of useable fluid calculatedearlier%- The accumulator is ade+uately si/ed if the useable fluid volume is e+ual to orgreater than the fluid volume re+uired to activate the B1! components%

Exa&ple si<ing calculation

Rig has "$"%D-litre accumulator operating at <"-M!a and L-M!a prechargepressure

!er cent usable fluid available at current operating pressures - $5%5O

Calculated usable fluid $55 3 "$"%D litres P L$%2 litres "55

Rig has <"-M!a B1! stac' - components to be considered<$G-mm 7ydril ,A-#55 &nnular B1! - closing vol re+=d <2%" litres<$G-mm 7ydril M!9 !ipe Rams - closing vol re+=d "<%$ litres

"5"%D-mm Cameron 7CR 7ydraulic :alve - opening vol re+=d <%4 litres'otal closing9opening -olu&e re2uired G<%# litres



H The accumulator is ade+uately si/ed since the usable fluid volume availablee3ceeds the volume re+uired to activate B1! components% The total volume re+uired to close the annular all in service pipe rams and thehydraulic valve must be included in calculations%

8R&0I;, ;o%" EQ&M!9E 1;9?

8RI99I;, 1R ER:ICI;, B1! 8&T&



'able ( accu&ulator speciications

6olu&e per 7o) o accu&ulator bottles

Co&&on accu&ulator suppliers and si<es



Si<ing Rechec%sL% 1nce an initial accumulator si/ing chec' has been completed it is notnecessary to complete si/ing calculations during each subse+uent rig

inspection - provided the accumulator=s operating parameters and B1! stac'remain the same%- !ressures after a function test *hich are approaching 2G55 '!a (from #555'!a and belo* should result in a si/ing chec' to determine if ade+uate useablefluid volume e3ists above 2G55 '!a% &s the closure of the annular on open holemay drop pressure belo* 2G55 '!a%

Precharge Re2uire&ents2% >ull precharge is not re+uired for an accumulator to meet the re+uirements%- The accumulator is considered ade+uate regardless of its prechargepressure if sufficient usable fluid is available to activate the B1! components

described in item " (annular% both sets of pipe rams if t*o re+uired or in usehydraulic valve and retain a minimum accumulator pressure of 2G55 '!a%i/ing calculations must be performed%

Manufacturer=s Recommended !recharge$<$5 '!a ( "5O for "5$55 '!a systemL555 '!a ("5O for "G 555 '!a systemL555 '!a ( "5O for <" 555 '!a system

Recharge Pu&p Proble&s#% If the accumulator recharge pump fails to recharge the accumulator to its

original operating pressure a complete function test of the B1! components



and si/ing calculations must be completed to reconfirm that ade+uate usablefluid is available *hile operating at the lo*er accumulator pressure%- If less than 2G55 '!a remains on the system after the function test a seriousdeficiency automatically e3ists%

$o14pressure Alar& S*ste&"5% &lthough it is not a regulation Board inspectors should recommend that alo*-pressure alarm system be installed in instances *here decreasingaccumulator pressures have gone undetected by a particular operator and.orcontractor%- This option should be considered the second time a problem is noted%- Electronic alarms using either a *arning light or horn can be installed *ithoutdifficulty%- The alarm setting should be integrated *ith the accumulator operatingpressure%

Accu&ulator Reser-oir 6enting""% It is recommended an accumulator reservoir *hich is enclosed in a buildinghave its vent installed in such a manner that venting ta'es place outside thebuilding%

BAC54UP 7I'R!GE7 SUPP$

7itrogen Re2uire&ents"% ufficient usable nitrogen must be available at a minimum pressure of 2G55'!a to fully close the annular preventer and pipe rams and open the hydraulicvalve%- If t*o sets of pipe rams are re+uired or an additional B1! has been addedand is in use as redundant e+uipment (see ection 4<5 (<G% <$ then there mustbe additional usable nitrogen available to operate the e3tra B1! component%(Unless the redundant e+uipment is loc'ed out%- The nitrogen supply must be tied into the system at a point *hich *ill allo* the;< to function the B1!s and ;1T be lost by venting or displacement into theaccumulator bottles% (ee C&18C technical bulletin " and &ppendi3 "545 todetermine if the rig system is properly configured%The nitrogen bottles must be- 9ocated at least "$ m from the *ellbore% (!referably *ith the remote B1!

accumulator controls- hielded or housed%- Readily accessible (immediately fully operational by opening the valves to theaccumulator system%

Usable fluid is defined as the e+uivalent litres of stored nitrogen at a minimumpressure of 2G55 '!a%

Recording 7itrogen Particulars<% 8etermine and record the number of nitrogen bottles in service% 8etermine ifthe bottles are in crossflo*% (1n a common line tied into the system% If they can

be e+uali/ed *hen both bottles are open then the pressure must be averagedand the usable fluid volume calculated using an average of all bottles% (ee



>igure ;o% " page $% If the bottles are independent of each other by means of achec' valve installed on each bottle (if both bottles are open pressures cannote+uali/e then the pressure in each bottle can be used individually to calculatethe usable fluid e+uivalent% (ee >igure ;o% < on !age $%

7itrogen Calculation Methods4% T*o methods for calculating bac'-up nitrogen ade+uacy are provided in themanual%- Method " sho*n in item G is the preferred method to use during inspectionsbecause of its simplicity%- The &lternate MethodF sho*n in &ppendi3 "545 re+uires more detailedcalculations%- 8ra*ing ;o% 4 in Method " is derived from the e+uations sho*n iii &ppendi3"545%

7itrogen Calculations @Method (

G% Complete usable fluid volume calculations using 8ra*ing ;o% 4 and thefollo*ing procedures- !lot the pressure of the bottles in service (either combined average orindependently as determined from item < above on a vertical a3is and dra* ahori/ontal line across the appropriate bottle si/e - then plot perpendicular linedo*n to the hori/ontal a3is% Read the e+uivalent litres of usable nitrogen% Totalthe fluid volumes determined%- 8etermine and total the fluid volume re+uired to close the annular and piperams and open the hydraulic valve (see &ppendi3 "5$$ and compare thisvolume *ith the volume of usable nitrogen calculated earlier%- The bac'-up nitrogen supply is ade+uate if it a calculated volume is e+ual to orgreater than the fluid volume re+uired to activate the B1! components%

Exa&ple nitrogen calculation 4 or a-erage pressures ro& co&binedbottles @see igure no) ( on page ?Rig has t*o G<-litre nitrogen bottles available Tied into common cross flo*line*ithout independent chec' valves%

Bottle " S "L%$ M!a - Bottle < S "G%5 M!a

&verage bottle pressure "L%$ M!a "G%5 M!a P "$%L$ M!a

< bottlesUsable fluid (per bottle from dra*ing 4L%5 litres

T1T&9 U&B9E >9UI8 < 3 4L%5 litres LG%5 litres

Rig has <"-M!a B1! stac' - components to be considered

<$G-mm 7ydril ,A-#55 &nnular B1! - closing vol re+=d <2%" litres

<$G-mm 7ydril M!9 !ipe Rams - closing vol re+=d "<%$ litres

"5"%D-mm Cameron 7CR 7ydraulic :alve - opening vol re+=d <%4 litres



T1T&9 C91I;,.1!E;I;, :19UME RE@UIRE8 G<%# litres

H ;itrogen volume is acceptable since LG%5 litres are available *hen only G<%#litres are re+uired to activate B1! components%

If t*o sets of pipe rams are re+uired or redundant e+uipment is in service (notloc'ed out the closing volume for each set must be included in the calculations%

Exa&ple nitrogen calculation 4 or indi-idual pressure) @See igure no) + onpage ?

Rig has t*o G<-litre nitrogen bottles available Tied in but independent isolationby chec' valve%

Bottle " S "D%$ M!a - Useable >luid from 8ra*ing G"%5 litres

Bottle < S "G%L M!a - Useable >luid from 8ra*ing 4"%$ litres < bottles

'otal usable luid L<%$ litres

Rig has <"-M!a B1! stac' - components to be considered

<$G-mm 7ydril ,A-#55 &nnular B1! - closing vol re+=d <2%" litres

<$G-mm 7ydril M!9 !ipe Rams - closing vol re+=d "<%$ litres

"5"%D-mm Cameron 7CR 7ydraulic :alve - opening vol re+=d <%4 litres

'otal closing9opening -olu&e re2uired G<%# litres

H ;itrogen volume is acceptable since L<%$ litres are available *hen only G<%#litres are re+uired to activate B1! components%

If t*o sets of pipe rams are re+uired or redundant e+uipment is in service (notIoc'ed out the closing volume for each set must be included m the calculations%

0igure (7+ bottle coniguration

Common line Crossflo*F e+uali/ed system - use average pressure from allbottles%



0igure +7+ bottle conigurationIndependent bottles isolated by chec' valve - use individual pressure from eachbottle%



WI7'ERI;I7G B!P E3UIPME7'

"eating Re2uire&ents"% 8uring cold *eather operation sufficient heat must be provided to maintainthe effectiveness of the B1! system (if the rig boiler is in service this is a good

indicator that the B1! system must be heated%- The B1! stac' shall be ice-free%- The portion of the bleed-off line under the sub-structure as *ell as the manmust be heated and fully operational%- The portion of line outside the substructure does ;1T re+uire heatingho*ever it is recommended%- The bleed-off lime and manifold may be filled *ith a free/ing depressant fluid(e%g% glycol or blo*n out *ith ah to help prevent free/ing problems%- & steam hose coiled around the bleed-offline and manifold may also assist inpreventing free/ing problems (operators or contractor=s discretion%

Use o Diesel 0uel<% The use of diesel fuel in the bleed-off system should be discouraged because- It does not serve as an absorbent as does glycol- It simply displaces *ater from the system (total displacement may not al*aysbe successful-% It is flammable (flash point appro3% G2-$# degrees C- It may not be compatible *ith valve gas'ets and.or pac'ing- 0hen cooled diesel may become cloudy gelF as fine *a3 crystalsprecipitate% &lso dissolved *ater may form very fine ice crystals (summer fuel-#"-"$ *inter fuel -G""-G< degrees C% Therefore *a3 (and ice could hamperoperation of the system%

Use o Gl*col4% 1perators and contractors should be reminded to follo* the manufacturer=smi3ing re+uirements *hen using glycol to *interi/e the bleed-off and 'illsystem% &n improper mi3ture even from the standpoint of adding too muchglycol can create a problem during cold temperatures%G% Ensure disposal of glycol or other antifree/e component is in accordance *ithection <$5($ and &ppendi3 ""55%

SPACI7G REGU$A'I!7S

Well to 0la&e4t*pe E2uip&ent"% ;o flame-type e+uipment shall be placed or operated *ithin <$ m (L$ feet ofa *ell oil storage tan' or other source of ignitable vapour (e3cept *aterin)ection *ells%- >lame-type e+uipment is any fired heating e+uipment using an open flame*hich includes a space heater torch heated process vessel boiler and anelectric arc or open-flame *elder% Including *ellsite shac's and trailers etc% *ithstoves pilot lights etc%- 8rills grinders or other portable type tools must not be used *ithin <$m of the*ellbore *ithout shutting in the *ellbore first%

Welding



<% pecial circumstances may necessitate *elding *ithin <$ m (L$ feet of a*ell% trict safety procedures must be adhered to *hich include closing theapplicable B1!s% Under no circumstances is *elding to be carried out *hiledrilling ahead%

Well to End o 0lare $ine4% The flare pit and the termination of all flare lines shall be at least $5 m ("$5feet from a *ell (see ection 4<5(< for method of handling deficiency%G% The flare pit shall- be e3cavated to a depth of not less than < m- have side and bac' *alls rising not less than < m above ground level- be constructed to resist the erosion of a high-pressure flo* of gas or li+uid- be shaped to contain all li+uids%- The use of a flare tan'F is permitted *hen environmental restrictions *ill ;1Tallo* a flare pit% The tan' must be suitable to contain fluids have an open topor venting provision *hich *ill ;1T create bac' pressure and be spaced at

least $5 m from the *ellbore% The line must be secured to the tan'

There is no si/e re+uirement for the tan' but it must be appropriate for thevolume of fluid e3pected as *ould be the flare pit above%

Well to Rubbish Burn Pit Site and Waste Disposal$% &ll rubbish must be transported to a suitable disposal site or be burned in anincinerator at least $5 m ("$5 feet from the *ell (see ection 4<5(< for methodof handling deficiency%- &ll burning must be carried out according to &EUB Informational 9etter I9 2"-"5 8isposal of Campsite and 0ell ite 0aste and according to &lbertaEnvironments Clean &ir &ct%- Rubber plastic or any other material cont or coated *ith rubber or plastic isconsidered prohibited debrisF and must not be burned%- 8isposal.torage of *aste lubricants oil glycol oilfield *astes must be donein accordance *ith the 1ilfield 0aste Management Re+uirement (L9 #4-2refers to &ppendi3 ""55%

Crude !il 'an%D% ;o oil storage tan' shall be located *ithin $5 m ("$5 feet of a *ell unlessapproved by an &EUB (2%5#5 representative% This particular concern is more

applicable service rigs but a problem may be encountered if oil is recoveredduring a drill-stem test (see ection 4<5(< for method of handling deficiency%

The use of oil based fluids for drilling mud and the use of crude oil for spottingFto release stuc' drillpipe must be considered as potentially ha/ardous and theon site safety of this procedure must be addressed before commencingoperations%

E&plo*ing DC MotorsL% 8iesel electric rigs employ 8C electric motors for operating their dra**or'srotary table and mud pumps%



Because of their location and the fact that electric arcing occurs during theiroperation diesel motors must be purged (*ith the air inta'e <5 m from the*ellbore in compliance *ith the regulations adopted under the Electrical!rotection &ct%

8eficiencies noted *ith these motors should be mentioned to the operator andcontractor and follo*ed up *ith an advisory to the Electrical !rotection Branchof &lberta 9abour% The inspection report should not be mar'ed unsatisfactory - acomment in the Remedial &ction section of the report is ah that is necessary%(ee ection 5"$ Electrical !rotection !olicies%

pacing e3emptions may be granted by &rea 1ffice staff provided the operatordiscusses its spacing needs *ith the appropriate &rea 1ffice beforecommencing operations%

140314567 drilling rig inspection manual

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