!Qfpira00scladrill Bit Specs

BIT INFORMATION FORMDate In Well Name. RAV-8H6 Depth In (mBRT) 1,484.00 m3/min 09-Jan-10 Bit No. 5 Size (mm) 216 BHA No. 5 Intvl Drilled (m) 1,432.00 Jet Vel 50 m/sec PV / YP 22 / 46 L A B X G I O CT R TD Make HUGHES Av. ROP (m/hr) 29.8 m/hr Jet Impact 487 lbf Torque (kNm) 13.6-19.0 Starting Survey Last Survey Type HCD506ZX Hrs Drilling 48 TFA (cm) 7.6 RPM (Surface) 120-150 Depth: 1487.44m Depth: 2895.79m Date Out Serial No. 7127486 % Slide / Rotary 0 / 100 Nozzles 6 x 16 TBR (krevs) 555 Inc. 86.7 Inc. 90.29 12-Jan-10 IADC Code M323 WOB (t) 1.8-3.6 Tot TBRs (krevs) 555 Tot IADC Hrs 48 Az. 5.11 Az. 15.24

Depth Out (m) 2,916.00 Pressure (kPa) 16,600

Mud Type FLOPRO NT Dull Bit Grading

Mud Weight 1.15 I 1 O 1 D WT

BHA #5 BHA Length Comments: Performance:

216mm (8.5in) HUGHES HCD506ZX PDC BIT. SERIAL No.7124786, XCEED 675, PERISCOPE 675, TELESCOPE 675NF, ADN-6 63.04 m BHA Weight 14.70 t Wt below Jar 10.90 t

Formation Barrow/Pyrenees

Interval (mMD) Interval Hrs 1484-2916 33.3

Av Inst. ROP 43.0 m/hr

ROP Range 5.11-211

ROP Inc. Conns 30.2 m/hr

Bit Condition: Bit was in rerunnable condition. One chipped tooth on nose of blade. No gauge damage observed.

Chipped Tooth

Gauge View

In Gauge

Top View

9/04/2010

BIT INFORMATION FORMDate In Well Name. CRO-3H1 Depth In (mBRT) 966.00 m3/min 3.60 Mud Type Ultradril Dull Bit Grading I 1 BHA #3 BHA Length Comments: Performance: Formation L Gearle Windalia Radiolarite Muderong Bit Condition: Bit was in good condition. Observed chipped cutters on some shoulder areas and one broken cutter. Observed slight erosion on the shoulder matrix. Bit observed to be was balled up upon retrieval. Interval (mMD) Interval Hrs 1033 - 1028 1028 - 1296 1296 - 1715 10.25 11.5 20.25 Av Inst. ROP 35.0 m/hr 50.0 m/hr 25.0 m/hr ROP Range 25-50 m/hr 25-100 m/hr 10-50 m/hr ROP Inc. Conns 19-Oct-09 Bit No. 1 Size (mm) 311 BHA No. 3 Intvl Drilled (m) 762.00 Jet Vel 70 m/sec PV / YP 35 / 50 L S B X G I O BU R TD Make Smith Av. ROP (m/hr) 29.5 m/hr Jet Impact 1148 lbf Torque (kNm) 5-20 Starting Survey Last Survey Type MDi616LHSBPX Hrs Drilling 25.8 TFA (cm) 1.34 RPM (Surface) 100-140 Depth: 987.m Depth: 1728.m Date Out Serial No. JY6621 % Slide / Rotary 0 / 100 Nozzles 6 x 15, 2 x 14 TBR (krevs) 432 Inc. 46.63 Inc. 87. 22-Oct-09 IADC Code M222 WOB (t) 0-10 Tot TBRs (krevs) 432 Tot IADC Hrs 37.75 Az. 15.28 Az. 16.66

Depth Out (m) 1,728.00 Pressure (kPa) 19,305 Mud Weight 1.14-1.22sg O 2 D BT

311mm (12.25in) SMITH MDi616LHSBPX PDC BIT (S/N: JY6621), POWERDRIVE 900 X5, ARC-8 (GR-RES-APWD), TELESCOPE 825 NF, NMDC, 210mm DRILL COLLAR, HYDRAULIC JAR, 210mm DRILL COLLAR, CROSSOVER, DART SUB, 27JTS 127mm HWDP. 318.14 m BHA Weight 71.00 t Wt below Jar 19.70 t

Chipped cutters on shoulder and erosion to matrix

Broke Cutter

Bit Condition

Bit Balled Up

23/10/2009

BIT INFORMATION FORMDate In Well Name. CRO-4H2 Depth In (mBRT) 1,103.00 m3/min 08-Nov-09 Bit No. 3 Size (mm) 311 BHA No. 3 Intvl Drilled (m) 118.00 Jet Vel 70 m/sec PV / YP 18 / 31 L A B X G I O R Make HCC Av. ROP (m/hr) 26.8 m/hr Jet Impact 1079 lbf Torque (kNm) 6.8-17.7 Starting Survey Last Survey Type HCD506Z Hrs Drilling 4.4 TFA (cm) 8.77 RPM (Surface) 80-140 Depth: 1110.3m Depth: 1218.06m Date Out Serial No. 7017892 % Slide / Rotary 0 / 100 Nozzles 3 x 16, 3 x 18 TBR (krevs) 63 Inc. 54.77 Inc. 60.93 09-Nov-09 IADC Code M222 WOB (t) 0-10 Tot TBRs (krevs) 63 Tot IADC Hrs 6 Az. 350.33 Az. 357.72


Mud Type Ultradril Dull Bit Grading

Mud Weight 1.16sg I 1 O 1 D WT

NO BHA


HCC HCD-506Z 311mm (12.25in) PDC BIT. SERIAL No. 7017892., POWERDRIVE 900 X5-ARC8 (RES-GR-APWD)TELESCOPE 825 NF, 27JTS 127mm HWDP. 318.21 m BHA Weight 71.00 t Wt below Jar 19.70 t

Formation L Gearle Windalia Radiolarite

Interval (mMD) Interval Hrs 1103-1200 1200-1221 3.7 0.7

Av Inst. ROP 32.6 m/hr 31.8 m/hr

ROP Range 6.7-76.7 17-48.4

ROP Inc. Conns 17.3 m/hr 17.5 m/hr

Bit Condition: Bit was in good condition. BHA pulled due to inability to achieve required build for hole angle.

Cutter Condition

Gauge View

Top View

12/11/2009

BIT INFORMATION FORMDate In Well Name. CRO-5H3 Depth In (mBRT) 993.80 m3/min 0.06 Mud Type ULTRADRIL Dull Bit Grading I 2 BHA #3 BHA Length Comments: Performance: Formation Dockrell L. Gearle Windalia Muderong Barrow Group Bit Condition: Bit Condition: Plugged nozzle observed once bit back to surface. Bit gauged 1/16 undergauge, bit gauge sat lower when placed on bit post run. Broken cutters evident on Taper. Interval (m) 993.8 - 1003 1003 - 1196 1196 - 1306 1306 - 1454 1454 - 1470 Interval Hrs 0.5 8.5 5 6.75 2.25 Av Inst. ROP 25.0 m/hr 30.0 m/hr 40.0 m/hr 20 m/hr 25.0 m/hr ROP Range 10-30 m/hr 10-40 m/hr 10-50 m/hr 5-50 m/hr 10-50 m/hr ROP Inc. Conns O 4 05-Aug-09 Bit No. 3 Size (mm) 311 BHA No. 3 Intvl Drilled (m) 476.20 Jet Vel 66 m/sec PV / YP 30 / 50 L T B X G 1 O PN R TD Make Smith Av. ROP (m/hr) 29.4 m/hr Jet Impact 959 lbf Torque (kNm) 7 - 20 Starting Survey Last Survey Type MDi616 LHSBPX Hrs Drilling 16.2 TFA (cm) 1.34 RPM (Surface) 140 Depth: 972.94m Depth: 1470.m Date Out Serial No. JY9392 % Slide / Rotary 0 / 100 Nozzles 2 x 14, 6 x 15 TBR (krevs) 268 Inc. 41.32 Inc. 87.00 06-Aug-09 IADC Code M222 WOB (t) 2.3 - 6.8t Tot TBRs (krevs) 237 Tot IADC Hrs 24.75 Az. 51.24 Az. 43.00

Depth Out (m) 1,470.00 Pressure (kPa) 22,000 Mud Weight 1.14 D BT

311mm (12.25in) Smith MDi616 LHSBPX PDC BIT (SERIAL No. JY9392), POWERDRIVE 900 X5 (GAMMA), ARC8 (RES-GR-APWD), TELESCOPE 825 NF MWD 315.64 m BHA Weight 70.40 t Wt below Jar 19.90 t

Damaged Nozzle

Broken Teeth on Taper

1/16 Undergauge

Gauge View

8/08/2009

BIT INFORMATION FORMDate In Well Name. CRO-5H3 Depth In (mBRT) 1,470.00 m3/min 08-Aug-09 Bit No. 4 Size (mm) 216 BHA No. 4 Intvl Drilled (m) 1,849.00 Jet Vel 66 m/sec PV / YP 25 / 40 L A B X G I O CT R TD Make Reed Av. ROP (m/hr) 28.8 m/hr Jet Impact 632 lbf Torque (kNm) 16.3-27.2 Starting Survey Last Survey Type RSR616M-B28 Hrs Drilling 64.3 TFA (in) 1.035 RPM (Surface) 140 Depth: 1480.92m Depth: 3298.4m Date Out Serial No. 222997 % Slide / Rotary 0 / 100 Nozzles 6 x 15 TBR (krevs) 1013 Inc. 87.79 Inc. 88.22 14-Aug-09 IADC Code M422 WOB (t) 2.7-6.8t Tot TBRs (krevs) 1013 Tot IADC Hrs 82.75 Az. 43.17 Az. 45.23



Mud Weight 1.16 I 3 O 4 D BT


REED HYCALOG RSX616M-B28 BIT (SERIAL No. 222997) - XCEED675 - PERSICOPE 675 (RES-APWD-GR) - ILS TELESCOPE 675 NF (IWOB-MVC-GR-D&I) - ADN-6(DENSITY-POROSITY)-NMDC-HYDRA JAR. 63.59 m BHA Weight 15.20 t Wt below Jar 11.40 t

Formation Barrow Group Muderong Barrow Group

Interval (m) 1470-1696 1696-1805 1805-3319

Interval Hrs 6.1 12.6 45.6

Av Inst. ROP 37.1 m/hr 8.7 m/hr 33.2 m/hr

ROP Range 40-60 3-10 25-45

ROP Inc. Conns

Bit Condition: Broken teeth appear to have resulted when drilling plug set as the broken teeth had been rounded. Extensive chipping and damage to teeth in inner row. De-lamination present on 2 x cutters on inner row. Gauge was still intact; gauge protector worked well.

Broken Teeth and De-laminated Cutters

Gauge View

Broken Teeth and De-laminated Cutters

In Gauge

17/08/2009

BIT INFORMATION FORMDate In Well Name. CRO-6H4 Depth In (mBRT) 1,056.00 m3/min 13-Jul-09 Bit No. 3 Size (mm) 311 BHA No. 3 Intvl Drilled (m) 430.00 Jet Vel 70 m/sec PV / YP 34 / 37 L S B X G I O WT R TD Make HCC Av. ROP (m/hr) 25.6 m/hr Jet Impact 1079 lbf Torque (kNm) 19 Starting Survey Last Survey Type HCD-506 Hrs Drilling 16.8 TFA (cm) 1.33 RPM (Surface) 150 Depth: 1071.05m Depth: 1465.03m Date Out Serial No. 7211470 % Slide / Rotary 0 / 100 Nozzles 3 x 16, 3 x 18 TBR (krevs) 237 Inc. 46.04 Inc. 87.63 15-Jul-09 IADC Code M323 WOB (t) 11.4 Tot TBRs (krevs) 237 Tot IADC Hrs 22.25 Az. 25.55 Az. 29.79


Mud Type ULTRADRIL Dull Bit Grading

Mud Weight 1.14 I 2 O 4 D BT


HCC HCD-506 311mm (12.25in) PDC BIT (SERIAL No. 7211470) WITH POWERDRIVE 900 X5-ARC8 (RES-GR-APWD)TELESCOPE 825 NF 315.87 m BHA Weight 71.60 t Wt below Jar 20.00 t

Formation L. Gearle Windalia Muderong Barrow Group

Interval (m) 1056-1191 1191-1301 1301-1464 1464-1486

Interval Hrs 5.5 5.25 8.25 1

Av Inst. ROP 37.0 m/hr 34.2 m/hr 24.7 m/hr 39.4 m/hr

ROP Range 12-102 9-81.4 3-87.6 5-134

ROP Inc. Conns

Bit Condition: The bit was in reasonably good shape. Still in gauge. Some cutters were broken especially on two blades. Condition of the broken teeth were sharp, indicating that it was newly broken and did not occur during drilling. Bit performance overall good. Observed significant balling between blades of bit and lower BHA.

Broken Teeth on Shoulder

Broken Teeth

In Gauge

Gauge View

8/08/2009

BIT INFORMATION FORMDate In Well Name. CRO-6H4 Depth In (mBRT) 1,486.00 m3/min 19-Jul-09 Bit No. 6 Size (mm) 216 BHA No. 5 Intvl Drilled (m) 1,829.00 Jet Vel 36 m/sec PV / YP 23 / 40 L A B X G I O WT R TD Make REED Av. ROP (m/hr) 35.9 m/hr Jet Impact 326 lbf Torque (kNm) 20.4 Starting Survey Last Survey Type RSR616M-B28 Hrs Drilling 50.9 TFA (cm) 1.49 RPM (Surface) 140 Depth: 1488.31m Depth: 3292.45m Date Out Serial No. 221627 % Slide / Rotary 0 / 100 Nozzles 6 x 18 TBR (krevs) 865 Inc. 87.58 Inc. 89.96 24-Jul-09 IADC Code M422 WOB (t) 4.5 Tot TBRs (krevs) 865 Tot IADC Hrs 69.75 Az. 28.58 Az. 50.45



Mud Weight 1.16 I 2 O 4 D CT


REED HYCALOG RSR616M-B28 BIT (SERIAL No. 221627) - XCEED675 - PERISCOPE 675 (RES-APWD-GR) - ILS POWERPULSE 675 HF - ADN-6(DENSITY-POROSITY)-NMDC-HYDRA JAR. 58.72 m BHA Weight 6.20 t Wt below Jar 4.50 t

Formation Barrow Group

Interval (m) 1829 m

Interval Hrs 50.9

Av Inst. ROP 35.9 m/hr

ROP Range 40-70m/hr


Bit Condition: Bit was in good condition with no damage to gauge area. Chipped teeth noted inconsistently on cutters on all areas of bit. It appears the damage to cutters may have occurred when drilling shoetrack. Shoetrack took 7hrs to drill. Minor wear to cutters on bit shoulder.

IN GAUGE

WORN TEETH ON SHOULDER

CHIPPED TEETH

8/08/2009

BIT INFORMATION FORMWell Name. Stickle-4H1 Bit No. Size (mm) 6 216 BHA No. 6 Intvl Drilled (m) 1,446.00 Jet Vel 212 m/sec PV / YP 22 / 36 L S B X G I O R Make Reed Hycalog Av. ROP (m/hr) 82.2 m/hr Jet Impact 35000 N Torque (Nm) 10.9 - 20.4 Starting Survey Last Survey 3.880 /30m Type RSR616M-B28 Hrs Drilling 17.6 TFA (cm) 1.035 RPM (Surface) 40 -130 Depth: Depth: DLX (min)

Date In Date Out Serial No. 219119 % Slide / Rotary 0 / 100 Nozzles 6 x 15 TBR (krevs) 275 1331.57m Inc. 88.68 2768.m Inc. 89.35 0.080 /30m DLX (ave)

22-May-09 27-May-09 IADC Code M442 WOB (t) 1.0-6.8 Tot TBRs (krevs) 275 Tot IADC Hrs 52.00 Az. 97.83 Az. 91.65 0.880 /30m

Depth In (mMDRT Depth Out (mMD 1,322.00 m3/min 2.27 Mud TypeFLOPRO

2,768.00 Pressure (MPa) 16.5 Mud Weight 1.14-1.17 I 3 O 4 D WT

Dull Bit Grading DLS Summary BHA #6 BHA Length Performance Formation Barrow/Pyrenees Comments:

ER TD

Max DLS (Plan)

4.200 /30m DLX (max)

216mm Reed Hycalog RSR616M-B28 Bit, XCEED 675 complete with ported float, Backup Periscope 675, 8 3/8 ILS, TPowerscope 675HF, ANDN6 c/w 8 1/4" Stabilizer, NMDC, 5" HWDP, Hyd Jar, 5" HWDP, Dart Sub. 61.95 m BHA Weight OB Hrs 18 m Av Inst. ROP 52 m 2.0 m/hr 6.68 t ROP Range - 100.0 m/hr Wt below Jar WOB Range 2 kips 15 kips 40 4.95 t RPM Range 130 5 Torque Range (ft.lbs) 15

From 1322 m

To 2768 m


Bit was not in rerunnnable condition. Worn cutter damage and erosion evident around shoulder and gauge areas.

Top View with 216mm No-Go Gauge Ring

Worn Cutters - Shoulder / Gauge Area

Erosion

Gauge View

8/08/2009

BIT INFORMATION FORMWell Name. Stickle-5H2 Depth In (mMDRT 1,399.00 m3/min 2.27 Mud TypeNaCl/IdcapD/Klastop

Date In Date Out Type MDi616 LEPX Hrs Drilling 173 TFA (cm) 1.035 Serial No. JY8410 % Slide / Rotary 0 / 100 Nozzles 6 x 15 TBR (krevs) 136 1399.m Inc. 88.22 3120.m Inc. 89.4 0.006 /30m DLX (ave)

24-Mar-09 31-Mar-09 IADC Code M222 WOB (t) 0-9.1 Tot TBRs (krevs) 136 Tot IADC Hrs 105.50 Az. 89.17 Az. 81.82 1.330 /30m

Bit No. 4

Size (mm) 216

BHA No. 4

Make Smith Av. ROP (m/hr) 9.9 m/hr Jet Impact

Depth Out (mMDR Intvl Drilled (m) 3,120.00 Pressure (MPa) 12.4 Mud Weight 1.15 I 4 O 8 D LT L N B X 1 PV / YP 16-25 G O R 1,721.00 Jet Vel

Torque (Nm) 6.8 - 20.4 Starting Survey Last Survey 4.530 /30m

RPM (Surface) 130 Depth: Depth: DLX (min)


CT TD

Max DLS (Plan)

4.200 /30m DLX (max)

216mm Smith MDi616 LEPX Bit, XCEED 675 complete with ported float, Periscope 675, 8 3/8 ILS, Telescope 675NF, AND c/w 8 1/4" Stabilizer, NMDC, 5" HWDP, Jar, 5" HWDP, Dart Sub, 5 x 127mm HWDP. 62.73 m BHA Weight OB Hrs Av Inst. ROP 2.0 m/hr 7085.00 t ROP Range - 60.0 m/hr Wt below Jar WOB Range 0 kips 20 kips 70 5372.00 t RPM Range 130 0 Torque Range (ft.lbs) 20

From 1375 m

To 3113 m

ROP Inc. Conns

Bit was not in rerunnnable condition. Sever cutter damage including including missing and chipped cutters. Guage ring measured at 216mm.

Top View with 216mm Gauge Ring

Cutter damage Shoulder Area

Insert picture showing gauge wear only

Missing Cutters

Gauge View

8/08/2009

BIT INFORMATION FORMDate In Well Name. STI-6H3 Depth In (mBRT) 1,029.00 m3/min 3.96 Mud Type KLASSTOP Dull Bit Grading I 2 BHA #3 BHA Length Comments: Performance: Formation L Gearle Windalia Radiolarite Muderong Pyrenees Interval (m) 980 - 1188 1188 - 1266 1266 - 1450 1450 m Interval Hrs 9 4 10.5 0.25 Av Inst. ROP 35.0 m/hr 40.0 m/hr 30.0 m/hr 30.0 m/hr ROP Range 20 - 60 m/hr 20 - 60 m/hr 20 - 120 m/hr 20 - 40 m/hr ROP Inc. Conns O 1 18-Apr-09 Bit No. 3 Size (mm) 311 BHA No. 3 Intvl Drilled (m) 436.00 Jet Vel 60 m/sec PV / YP 37-48 L N B X G I O R Make Smith Av. ROP (m/hr) 30.3 m/hr Jet Impact 985lb Torque (kNm) 10-27 Starting Survey Last Survey Type MDi616LHABPX Hrs Drilling 14.4 TFA (cm) 1.62 RPM (Surface) 100-200 Depth: 1045.m Depth: 144.55m Date Out Serial No. JX4274 % Slide / Rotary 0 / 100 Nozzles 6 x 16, 4 x 12 TBR (krevs) 449 Inc. 47.87 Inc. 86.96 21-Apr-09 IADC Code M223 WOB (t) 0-9 Tot TBRs (krevs) 449 Tot IADC Hrs 32.5 Az. 65.56 Az. 73.14

Depth Out (m) 1,465.00 Pressure (kPa) 21,400 Mud Weight 1.17 D CT

EC TD

311mm MDi616LHABPX BIT, 308mm PD 900 - X5 WITH GAMMA, RECEIVER SUB, 168mm FLEX JT, 210mm ARC 8, TELESCOPE 825 NF, 203mm NMDC, 203mm DRILL COLLAR, HYDRAULIC JAR, 203mm DRILL COLLAR, CROSSOVER, 27JTS 127mm HWDP. 314.22 m BHA Weight 32.10 t Wt below Jar 8.90 t

Bit Condition: Bit was not in re-runnable condition. Observed chipped teeth near nose and slight erosion on the shoulder.

Erosion Damage to Shldr

Cutter damage Nose Area

In Gauge

Gauge View

8/08/2009

BIT INFORMATION FORMWell Name. Stickle-6H3 Depth In (mMDRT 1,465.00 m3/min 2.27 Mud TypeNaCl/IdcapD/Klastop

Date In Date Out Type MDi616 LEPX Hrs Drilling 69.3 TFA (cm) 1.035 RPM (Surface) 100-120 Depth: Depth: DLX (min) Serial No. JY8389 % Slide / Rotary 0 / 100 Nozzles 6 x 15 TBR (krevs) 1052 1483.72m Inc. 89.17 3090.m Inc. 89.31 0.050 /30m DLX (ave)

23-Apr-09 30-Apr-09 IADC Code M222 WOB (t) 0-4.5 Tot TBRs (krevs) 1052 Tot IADC Hrs 102.75 Az. 72.56 Az. 76.53 0.703 /30m

Bit No. 4

Size (mm) 216

BHA No. 4

Make Smith Av. ROP (m/hr) 23.4 m/hr Jet Impact 2469 N Torque (Nm) 6.8 - 29.9

Depth Out (mMDR Intvl Drilled (m) 3,090.00 Pressure (MPa) 14.5 Mud Weight 1.15 I 3 O 6 D WT L S B X 1,625.00 Jet Vel 57 m/sec PV / YP 23-41 G I O R


Starting Survey Last Survey 3.810 /30m

CT TD

Max DLS (Plan)

4.200 /30m DLX (max)

216mm Smith MDi616 LEPX Bit, XCEED 675 complete with ported float, Periscope 675, 8 3/8 ILS, Telescope 675NF, ANDN-6 c/w 8 1/4" Stabilizer, NMDC, 5" HWDP, Hyd Jar, 5" HWDP, Dart Sub. 61.68 m BHA Weight OB Hrs 69.3hrs Av Inst. ROP 23.4m/hr 2.0 m/hr 6.63 t ROP Range - 50.0 m/hr Wt below Jar WOB Range 0 kips 10 kips 60 4.95 t RPM Range 130 0 Torque Range (ft.lbs) 22

From 1465 m

To 3090 m


Bit was not in rerunnnable condition. Severe cutter wear mostly around shoulder and nose area. Chipped cutters evident. Guage ring measured at 216mm.

Top View with 216mm Gauge Ring

Worn Cutters - Shoulder/Nose Area

Insert picture showing gauge wear only

Chipped Cutters

Gauge View

8/08/2009

!Qfpira00scladrill Bit Specs

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