kuliah 3 jenis2 & efsns komplesi ah
DESCRIPTION
KomplesiTRANSCRIPT
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Kuliah-3
Jenis-jenis dan Efisiensi Komplesi(2 SKS)
Dosen : Ir Andry Halim MMDosen : Ir. Andry Halim, MMUniversitas Trisakti
2012
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What is Completion ?pCompletions are the interface between the reservoir and surface production.
Th l f h l i d i i k ll h h b d ill d d i i f dThe role of the completion designer is to take a well that has been drilled and convert it into a safe and
efficient production or injection conduit. This does not mean that the completion always has tubing,
A Christmas tree or any other piece of equipment.
I it f l b ibl t d h l d th th i HIn some areas,it may,for example,be possible to produce open hole and then up the casing. However,as
we venture into more hostile areas such as deep water or the arctic,the challenges mount and
completions,by necessity, become more complex.
Completion design is a mix of physics chemistry mathematics engineering geology hydraulics materialCompletion design is a mix of physics,chemistry,mathematics, engineering, geology, hydraulics, material
science and practical hands-on wellsite experience.
The best completion engineers will be able to balance the theoretical with the practical.
However there is a strong role for those who prefer the more theoretical aspectsHowever, there is a strong role for those who prefer the more theoretical aspects.
Conversely,an engineer who can manage contracts, logistics, multiple service companies,the detailed
workings of specialised pieces of equipment and a crew of 50 is invaluable.
Some completion engineers work on contract or directly with the oil and gas companies Other engineersSome completion engineers work on contract or directly with the oil and gas companies.Other engineers
work with the service companies,and a detailed knowledge of their own equipment is invaluable.
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What is Completion ?p
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Safety in Well Completions y p
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Well Barrier
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Team Integrationg
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Data Sources for Completion Design
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Oil and Gas Well Completions
Types of Completion Types of Completion
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Type of CompletionType of Completion
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Completion Design FactorsCompletion Design Factors Principal completion design factor include:Principal completion design factor include:
Casing protection e g protection against erosion corrosion e.g., protection against erosion, corrosion
Tubing string removal e g for replacement or workovere.g., for replacement or workover
Safety or contingency e.g., requirements for safety valves and well kille.g., requirements for safety valves and well kill
Production control e.g., components providing flexibility and control of g , p p g y
production (nipples, profiles and sliding sleeves
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Basic Production Configurations Majority of completions are based on the
following completion configurationsg p g Reservoir interface
Openhole Casing production Liner production Gravel pack wellboreGravel pack wellbore
Production conduit Suspended tubing Basic packer Packer and tailpipe Packer with additional safety and production devicesPacker with additional safety and production devices
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Open Hole Prod ctionKey points
Open Hole Production Key points
No downhole flow control or isolation
Producing formation is unsupported
Casing provides isolation between shallower formations
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Casing Prod ctionCasing Production Key pointsKey points
No downhole flow control or isolationcontrol or isolation
Casing provides isolation betweenisolation between shallower formations with potential for remedial work to isolate sections ofisolate sections of perforated interval
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Liner Prod ctionLiner Production
Key points Similar to casing
production but ith ll ( dwith smaller (and
shorter) tubulars set through theset through the reservoir
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Gra el Pack WellboreGravel Pack Wellbore
Key points Special application Special application
- requirement determined by yformation type
May require special operation (underreaming) d i llduring well construction phase
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Gra el Pack ScreensGravel Pack - Screens
Wire wrapped screen
Prepacked screen
Gravel pack screen types
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Simple T bing CompletionSimple Tubing Completion
Key features Circulation capability
(well kill or kick-off) Improves hydraulic
performanceLi it d t ti Limited protection for casing
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Basic Packer CompletionBasic Packer Completion Key featuresKey features
Circulation capabilitycapability (determined by design and setting g gof packer)
Casing string protected from fluid and pressure effectseffects
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Packer ith TailpipePacker with Tailpipe Key featuresKey features
Additional flexibility for downholefor downhole production (flow)control, e.g., ( ) gplugs
Facility for downhole instruments (ga ges)(gauges)
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Enhanced Packer InstallationEnhanced Packer Installation Key features Key features
Improved flexibility for downhole productiondownhole production control, e.g., plugs above or below packerabove or below packer
Circulation capability independent of packerp p
Safety facility (SSSV)
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Completion Examplesp p The following completion examples are
extracted from design files for:extracted from design files for: Single zone completions Multiple zone completions Multiple zone completions Liner completions
Special completions Special completions Sand control Inhibitor injectionInhibitor injection Waterflood Thermal Remedial (scab liner)
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Single Zone Retrievable PackerSingle Zone Retrievable Packer
Key Features Tail-pipe facility for pressure and Tail-pipe facility for pressure and
temperature gauges Fully retrievable completionFully retrievable completion Packer can be set with well
flanged upflanged up Thru-tubing perforation possible
where size permitsp
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Single Zone Seal Bore PackerSingle Zone Seal-Bore Packer
Key Features Seal-bore packer set on Seal-bore packer set on
electric-line or tubing On-off connector and tubing
h ll t bi t banchor allows tubing to be retrieved
Tailpipe plugged and left inTailpipe plugged and left in wellbore or retrieved with production tubing
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Single Zone Packer and gTailpipe
Key Features Tailpipe plugged and left in
wellbore when production tubing i t i dis retrieved
Permits safe thru-tubing perforatingperforating
Block and kill system facilitates the killing of high pressure highthe killing of high-pressure, high-flowrate wells
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Single Zone Casing Seal g gReceptacle
Key Features Expansion joint allows for
tubing movement Tailpipe retrievable
(separately) Protective sleeve run in
CSR during primary and di l tiremedial cementing
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Multiple Zones 2 Zones 1 Packer
Key FeaturesSeparate or commingled Separate or commingled production through single tubing stringstring
Blast joint protection across upper intervalpp
On-off connector and tubing anchor permits tubing retrieval p gwith lower interval isolated
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Multiple Zones 2 Zones 2 Packers
Key FeaturesKey Features Independent production
through dual tubing stringsthrough dual tubing strings Blast joint protection across
upper intervalupper interval Both packers retrievable Tailpipe instrument facilityTailpipe instrument facility
on both strings Thru-tubing perforation ofThru tubing perforation of
lower zone possible
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Multiple Zones 3 Zones 3 Packersp
K F t Key Features Several zones produced
th h t bi t ithrough one tubing string Flow controlled by wireline
t i bl h k / h k lretrievable choke/check valves By-pass sliding sleeve prevents
communication during servicecommunication during service workUp to five zones have been Up to five zones have been produced using this method
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Multiple Zones 4 Zones 4 Packers
Key FeaturesFour zone selective Four zone selective production systemDual production strings Dual production strings
Commingled or alternate production controlled byproduction controlled by sliding sleeves
System contains 28 majorSystem contains 28 major downhole components
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Liner CSRLiner CSR
Key Features Most simple liner hook-up CSR replaces packer Fluid circulation through
sliding sleeve above the liner hanger
Tailpipe retrieved with d ti t biproduction tubing
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CSR and Seal Bore PackerCSR and Seal-Bore Packer
Key Features Liner top/lap is permanently
isolated Fluid circulation through
sliding sleeve above the kpacker
Tailpipe can be plugged to allow retrieval of theallow retrieval of the production tubing
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Special Ser ice CompletionsSpecial Service Completions
Special completion examples p p pinclude: Sand control Inhibitor injection Waterfloodate ood Tubing/casing repair
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Gravel Pack Completion
Key Features Tools set and gravel placed using
a service tool and tubing k t iworkstring
Gravel squeezed into perforation t ltunnels
Production tubing stung-in to production seal assemblyproduction seal-assembly
Specialised service typically involving dedicated serviceinvolving dedicated service equipment and personnel
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Inhibitor InjectionInhibitor Injection
Key Features Side pocket mandrel
injection permits protection inside production tubing above the packerI j ti i l d ll Injection nipple and small diameter injection line is suitable for shallowsuitable for shallow applications
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Inhibitor Complete ProtectionInhibitor Complete Protection
Key Features Parallel flow tube and seal-bore
packer enables inhibitor to be p mped do n short stringpumped down short string
All flow-wetted completion components are exposed tocomponents are exposed to inhibitor fluidInhibitor flow controlled at surface Inhibitor flow controlled at surface
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WaterfloodWaterflood
Key Featuresy Two injection zones treated
with both flow control regulators located at surface
Totally separate injection systems
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Waterflood Thick Injection jZone
Key Featuresy Injection efficiency in thick
zones is improved by using multiple injection points
Downhole flow regulation helps prevent premature breakthrough between intra zonal sectionsintra-zonal sections
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Thermal Completion Steam Injection
Key Features Packer incorporates an
integral expansion/slip joint assemblyassembly
SPM allows insulation material to be circulatedmaterial to be circulated into annulus
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Remedial Completion Scab Liner
Key Features Isolation of damaged casing/liner
b d t f d l t dor abandonment of a depleted zoneHydraulic set packers at top and Hydraulic set packers at top and bottom of scab linerOn off connector on lower seal On-off connector on lower seal-bore packer allowed installation with the lower perforationswith the lower perforations isolated throughout the operation
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Monbore CompletionMonbore Completion Key Features Safety valveKey Features
Designed to meet criteria for:
Safety valve
appropriate production rates
flexibility/contingency safety
Packer/hangerassembly
sa e y monitoring (reservoir
management)Liner
g ) longevity
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Multi-Zone Completion
T bi R t i bl S f Example of a Multi Zone Completion
Hydraulic Control Line forthe TRSCSSV
Tubing Retreivable SurfaceControled Subsurface SafetyValve (TRSCSSV)
Annular Safety Valve (ASV)S t ith W t Di t
Example of a Multi Zone Completionusing a Standard Configuration for
each Zone (this can be repeated for any number of zones)
Hydraulic Control Line forthe ASV
System with Wet Disconnect
Gas Lift Mandrel
10 3/4 Casing
Production Packer w/TEC bypass
5-1/2 Production Tubing
Tubing EncasedConductor (TEC)
IsolationPacker w/ TECfeedthru
Flow Control Device w/Integral Pressure/Temperature sensor
Venturi Flowmeter 9-5/8 Liner
PlugCross Coupling Clamp
Zone 1 Zone 2
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Questions ?Questions ?
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PR-3PR 31. Apa yang dimaksud dengan kopmplesi (nilai 15)1. Apa yang dimaksud dengan kopmplesi (nilai 15)2. Sebutkan sumber-sumber data untuk disain komplesi (nilai 15)3. Sebutkan jenis-jenis komplesi untuk cased hole (nilai 20)4 Apa peranan completion eng dlm penyelesaian sumur (nilai 20)4. Apa peranan completion eng dlm penyelesaian sumur (nilai 20)5. jika suatau reservoir terdiri dari 3 lapisan dengan data sbb :
Res A : Pr =2800 psia Depth = 2000 m Res B : Pr =2800 psia Depth = 1200 m Res B : Pr =2800 psia Depth = 1200 m Res A : Pr =2600 psia Depth = 1800 mBagaimana tipe komplesi yg terbaik ?Jelaskan alasannya (nilai 30)Jelaskan alasannya (nilai 30)