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April 2007

Successfully provided Mud Services in Drilling/ Production testing of wells SKFH, KLOY, KLCC

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KLOY DI L CW-IV 4/4/2007

26/4/2007

30/4/2007

01643

1643

Spudded the Well, Kicked off the

Well at 200m drilled to 305m..

Lowered & cemented 9 Casing.Further drilled down to 1640m.

Made a S/T of 35 stands. HDIL-SP-

GR logging tool did not go beyond

1582m.Recorded from 1582 to300m. Made R/T and conditioned the

hole but Logging tool did not gobeyond 1538m. R/I bit and observed

held up at 1538m. While reaming,String got stuck at 1623m and

released the same with circulation,

and reamed to bottom. Further,

recorded CDL-CNT-Cal-GR and

HRI-SP-GR Logs from 1643 to

1300m. Conditioned the hole andlowered 5 Prodn. Csg. to

1633.49m(F/C, 610.71m). WOC.

Scrapped the Well, recorded CBL-VDL-CCL-GR Log (1603 to

1175m). Found good Cement

Bondage with Cement rise up to

1210m. HT at 250 ksc in water ok.

Perforated the object I. AppliedCompressor to 120ksc. Only Water

flowed. Carried out Reverse wash

with Water. 300 Liters Oil surfaced.

Found Injectivity 260lpm @ 120ksc.

Applied N2 to 140 ksc. 0 to 100 ksc,

initially 50itres of Oil followed by

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Rig: CW- IVWell :KLOY, Type/ Profile: DI L, Drilled Interval: 0 1643m, Meterage Drilled : 1643m

Activity: Spudded the Well with 12 bit. Kicked off the Well at 200m drilled to 305m. Conditioned the hole. Lowered & cemented 9 Casing.

IWH, IBOP and drilled F/C, Cement, Csg Shoe and formation to 1640m. Made a S/T of 35 stands. HDIL-SP-GR logging tool did not go beyond1582m.Recorded from 1582 to 300m. Made R/T and conditioned the hole but Logging tool did not go beyond 1538m. R/I bit and observed held up at 1538m.

While reaming, String got stuck at 1623m and released the same with circulation, and reamed to bottom. Further, recorded CDL-CNT-Cal-GR and HRI-SP-GRLogs from 1643 to 1300m. Conditioned the hole and lowered 5 Prodn. Csg. to 1633.49m(F/C, 610.71m). WOC. Scrapped the Well, recorded CBL-VDL-

CCL-GR Log (1603 to 1175m).HT at 250 ksc in water ok.

Perforated the object I in 1.05 NaCl brine.Applied Compressor to 120ksc. Only Water flowed.Reverse wash with Water. 300 Liters Oil surfaced. Found

Injectivity 260lpm @ 120ksc. Applied N2 to 140 ksc. 0 to 100 ksc, initially 50itres of Oil followed by water and 100 to 140ksc Water along with traces of Oil

flowed. Carried out BHS and Rig released.

Mud Parameters:Drilled Interval Sp.Gr Visco

sity

Gel10 Fluid

Loss

San

d

pH PV YP Gel 0/10 Solid

m Sec,API

sec Cc,API

%,v/v

CPS Lbs/100 sq.ft

Lbs/100 sq.ft

%, v/v

0-300 GTO 1.05-1.10 37-42 47-52 NC

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DEVIATION DATA

Well KLOY : Inclined LProfile (KOP: 200m, Hole 12 - 0 - 305m & 8 -305 -1643m MD)

DD(m) Angle, o Azimuth, o

0 0 0.00

200 0 0.00206 1.50 16.00

215 3.00 24.00

225 4.00 17.00

234 6.00 9.00

271 8.50 3.00

316 9.50 358.00

364 10.00 355.00

412 10.50 355.00

470 11.50 355.00

560 13.5 357.00

600 17.00 358.00

640 17.00 359.00670 15.75 1.00

698 15.00 1.00

745 13.50 1.00

773 13.00 1.00

802 1300 5.00

830 13.75 7.00

869 13.50 10.00

913 13.25 10.00

953 13.00 11.00

991 12.50 13.00

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1039 13.00 15.00

1120 13.00 18.00

1255 13.00 26.00

1350 13.50 32.00

1500 13.00 37.00

1577 13.00 37.00

1579.2 13.00 37.00

Rig: R-IIWell: SKFH, Type / Profile:D , Drilled Interval ; 0-1777 mts Meterage Drilled :1777 mts

Activity: During lowering of 9 5/8 casing at the depth of 1248 m approx. ,observed no mud return ,decieded to establish circulation but in vain. Lowered

three more singles of casing pipe & try to establish circulation ,no success. P/O the casing up to the depth 1100m approx.& resumed circulation. Circulationestablished, resumed lowering of casing after gel breaking at the interval of 200m till bottom.

Mud Parameters:

Drilled Interval Sp.Gr Viscosity Gel10 Fluid

Loss

Sand pH Pv Yp Solid

0-302 GTO 1.05-1.15

37-42 47-52 N/C< 2%

9.0-9.5

- - -

Actual 1.05-

1.08

37-40 47-50 N/C 1 9.0 - - -

300-

700

GTO 1.10-

1.15

35-40 45-50 N/C-12 1 9.0-

9.5

- - -

Actual 1.06-

1.09

38-40 48-50 N/C 1 9.0-

9.5

700-

1200

GTO 1.15-

1.20

37-42 47-52 12-6 1 9.0-

9.5

- - -

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Actual 1.10-

1.20

39-42 49-52 12-7.6

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May2007

Successfully provided Mud Services in Drilling/ Production testing of wells SKFH,

KLXC EV CW-IV 06.05.07

25.05.07

0

1491

1491

Spudded the well.D/D 306 m.Lowered

& Cemented 9 5/8 casing.Further

drilled down to 1382 m. Cut core of

1382-1390 m .Further drilled down to

1487 m. Recorded logs.Lowered &

cemented 5 casing. Recorded

CBL-VDL logs.Tested casingharmatically. Placed brine cushion of

200 m & perforated Obj.I 1435-1425

m. Displaced well fluid with water.

Applied nitrogen twice. Observed flow

of water with traces of oil. Carried out

HF job. Applied compressor obs. Littleflow. PA PT nil.

Rig : CW-IVWell: KLXC , Type / Profile: EV, Drilled Interval : 00-1491 , Meterage drilled: 1491 m

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Activity: Spudded in the well.D/D to 306 m. Lowered and cemented 9 5/8 casing. After IWH and IBOP D/D with 8 1/2 bit to 315 m. Carried out

LOT. LOT value 1.71 MWE. D/D to 1382 m. Cut core from 1382 to 1390 m , D/D to 1396 m. Cut a core from 1396 to 1403 m. D/D to 1487 m.

Recorded logs. Lowered and cemented 5 casing.

After IWH and IBOP scrapped the well. Recorded CBL-VDL-GR logs. Recorded zero effect survey from 1440 to 100 m by VSP party. Tested

casing hermetically at 250 KSC. Placed a brine cushion of 200 m Perforated Object I (1435-1425 m , K-X ). Applied Nitrogen up to 100 KSC. Observed

0-60 KSC flow of water, 60-100 KSC flow of water with oil traces.Released nitrogen. WUO. PA,PT- Nil. Applied nitrogen up to 130 KSC. 0-100 KSC noflow, 100 liter oil surfaced, 100-130KSC flow of water with oil traces. Nitrogen cut at 130 KSC. Released nitrogen. WUO. No flow. PA,PT nil. Carried

out BHS. Injectivity 130 lpm at 130 KSC. Carried out HF job. Observed flow of chemical water with oil traces. PA,PT nil. Applied compressor up

to 110 KSC. Observed flow of water + oil traces + little gas. WUO.PA,PT- nil.

Mud Parameters:

Drilled Interval

m

Sp.Gr Viscosity Gel10 Fluid

Loss

Sand pH Pv Yp Solid

00-

300

GTO 1.05-1.10 38-42 48-52 NC

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1.25+ 17 18 14

SKFH DS R-II 06-04-2007

12-05-0715-05-2007

1777

2090313

Drilled successfully to it s target depth

without any problem .

CL-CLS

System

Rig: Rum-II

Well: SKFH Type/ Profile:D , Drilled Interval :1777-2090m Meterage Drilled :313m

Activity: Drilled successfully to its target depth without any problem and saved 7 drilling days.

Mud Parameters:

Drilled Interval Sp.Gr Viscosity Gel10 Fluid

Loss

Sand pH Pv Yp Solid

1777-

2090

GTO 1.65-

1.70*

42-47 52-57 6-5

< 1%

9.0-9.5 - - -

Actual 1.65-

1.75

39-46 49-56 6-5

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June2007

WDAQ EV R-II 22/5/2007 12772616

1339

Drilling CL-CLSSystem

Rig: Rum-IIWell: WDAQ, Type/ Profile:EV, Drilled Interval :1277-2618 m, Meterage Drilled : 1339 m

Activity: Drilling.

Mud Parameters:

Drilled Interval Sp.Gr Viscosity Gel10 FluidLoss

Sand pH Pv Yp Solid

100-1500 GTO 1.20-1.30 40-42 50-52 10-7 1 9.0-

9.5

ACTUA

L

1.14-1.34 40-41 50-51 8.0-5.2 1 9.0-

9.5

18 16 12-

18

1500-1750

GTO 1.30-1.40 42-44 52-54 7-6 1 9.0-9.5

ACTUA

L

1.40-1.37 40-42 50-52 5.2-5.0 1 9.5 15-

16

16-

18

18

1750-2800

GTO 1.55-1.57 42-45 52-55 6.0 1 9.0-9.5

1755-

2125

ACTUA

L

1.55-1.57 40-46 50-56 5-4.8 1 9.5 17-

15

13-

16

19-

22

2125-

2616

ACTUA

L

1.57-1.64 43-44 53-54 4.8-4.0 1 9.5 17-

24

16-

28

22-

24

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July2007

HIGHLIHGTS: WDAQ-First deepest well in Wadu area drilled with target depth 2800m without any problem .After logging tested Object-I ( 1801-1899m - Wadu sand ) .A 100m cement plug (2020-1920m ) was placed to isolate the zone before lowering 5 casing with 1801-1899m slotted casing. For

testing of Object-I conventionally 200m water cushion was placed & displaced with 5.5m3 mud of sp.gr1.65.During p/o 2 7/8 singles well became active ,

SIDPP & SICPP was recorded 1000 psi with mud wt. 1.65.Well was circulated with 6mm bean at 15spm in absence of adjustable choke & thus lost approx.

35m3 mud. Later on well was circulated through adjustable choke using mud wt. 1.63 & recorded shut in pressure 600 psi. Well was killed with 1.75 mud wt.

On observation shut in pressure recorded 100 psi , hence decided to kill the well with mud wt. 1.78.Well was killed with mud wt. 1.78 & further testing carried

on smoothly.

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WDA

Q

EV R-II 22/5/2007

21/7/2007

2616

2801

185

Drilling CL-CLS

System

Well: WDAQ, TYPE / Profile :EV, Drilled Interval : 2616- 2801 m, Meterage Drilled :185 m

Activity: Drilled down from 2616 m to 2801 m without any problem .After logging tested Object-I interval 1801-1899m ( Wadu sand ) .A 100m cement plug(2020-1920m ) was placed to isolate the zone before lowering 5 casing with 1801-1899m slotted casing. For testing of Object-I conventionally 200m water

cushion was placed & displaced with 5.5m3 mud of sp.gr1.65.During p/o 2 7/8 singles well became active, SIDPP & SICPP was recorded 1000 psi with mudwt. 1.65.Well was circulated with 6mm bean at 15 spm in absence of adjustable choke & thus lost approx. 35m3 mud. Well was circulated through adjustable

choke using mud wt. 1.63 & recorded shut in pressure 600 psi. Well was killed with 1.75 mud wt. On observation shut in pressure recorded 100 psi , hence

decieded to kill the well with mud wt. 1.78.Well was killed with mud wt. 1.78 Further testing carried on smoothly.

Drilled Interval Sp.Gr Viscosity

Gel10 FluidLoss

Sand pH Pv Yp Solid

2125-

2616

ACTU

AL

1.57-1.64 43-44 53-54 4.8-

4.0

1 9.5 17-

24

16-

28

22-

24

2616-

2800

GTO 1.55-1.57 42-45 52-55 6 1 9.5 - - -

2616-

2801

ACTU

AL

1.64+-1.70 42-45 52-55 4.0-

4.8