JPDA PRODUCTION

JPDA: Monthly Production
Barrels of Oil Equivalent (BOE)

Previous 3 months

MonthProduction (BOE)
Jul '173,579,747.04
Aug '173,187,784.22
Sep '172,468,710.68

Autoridade Nacional do Petróleo

LAFAEK, Well Description

Well: BU-D06

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ANP ID:

D06

Region:

JPDA

Contact Area:

JPDA 03-12

Field Name:

Bayu Undan



Well Type:

Development

Classification:

Gas - Condensate



Total depth (m):

3208

RKB (m):

58.2

Seabed (m):

78.6

Start:

19-September-2003

Finish:

27-November-2003

Well Data (release):


Status:

Draft


BU-D06

Well Summary

The BU-D06/BU-D06-ST1 development well was drilled from the BU-DPP platform by the Ensco 104 jack up rig. BU-DPP is located in the western half of the Bayu-Undan gas condensate field which is in the Production Sharing Contract (PSC) areas of JPDA 03-12 and JPDA 03-13, North Bonaparte Basin, Timor Sea, offshore Northwest Australia.
The location is approximately 250km south of East Timor and 480km northwest of Darwin. ConocoPhillips (03-12) Pty Ltd is the operator. The Ensco 104 jack up drilling rig (previously the Chiles Discovery) was on contract on the Bayu-Undan Field on 1st May, 2002 and following drilling, completion, perforation and flow testing of BU-WP1 wells the rig was towed to the BU-DPP platform jacket where it was pinned on location on 23rd July, 2003.

Regional Geology: The structure of the Bayu Undan field is a broad east-west trending horst block with multiple reservoirs set up by internal faults. The hydrocarbon-bearing section of the field is found in the upper part of the Early to Mid Jurassic Plover and the Late Jurassic Elang Formation. The Flamingo Group shales and argillaceous siltstones provide the top seal.



SAMPLES, SIDEWALL CORES CONVENTIONAL CORES

Drill Cuttings
BU-D06
(Measured depths referenced to “Medium” RT elevation - 48.6m).
Ditch cutting spot samples for description only were caught at 10 m intervals in the 17 ½" hole section between 837.0 and 2130.0 mMDRT. Samples were not collected between 2130.0 and 3208.0 mMDRT due to lost returns.

Table 1: BU-D06 - Ditch Cuttings Sampling Type and Frequency

Interval mMDRT
Sample Frequency
Sample Type
Distribution
128.0 to 837.0
None
No returns
837.0 to 2130.0
10m
Spot Samples
2130.0 to 3208.0
No Samples – No returns
BU-D06-ST1
(Measured depths referenced to “High” RT elevation 58.0m)
Composite washed and unwashed ditch cuttings samples were collected for storage at 5 or 10 m intervals in the 10 ⅝" x 14”, 12 ¼" and 8 ½" hole sections, between 3092.0 and 6340.0 mMDRT. Ditch cutting sampling is summarised in Table 2.

Table 2: BU-D06 ST1 - Ditch Cuttings Sampling Type and Frequency

Interval mMDRT
Sample Frequency
Sample Type
Distribution
3092.0 to 6033.0
6033.0 to 6340.0
10 m
5 m
Washed & Unwashed
Washed & Unwashed
Unwashed:
Conoco Phillips 1 set
East Timor Govt 1 set

Washed:
Conoco Phillips 1 set
East Timor Govt 1 set
Geoscience Aust. 1 set

Hydrocarbon Shows
Gas shows are summarised.

Cores
No conventional cores were cut.

Sidewall Cores
No sidewall cores were acquired.

LOGGING AND SURVEYS BU-D06

LWD Logging

(Measured depths referenced to “Medium” RT elevation - 48.6m)

Sperry-sun Drilling Services ran the open hole LWD logs that are summarised in Table 3.

Table 3: BU-D06 - Open Hole FEWD Logging Suites and Intervals

RunHole SizeTool StringInterval mMDRTComments
10036”-127.3 – 132.0No MWD tools run
20036"132.0 – 164.5No MWD tools run
30026"Dir164.5 - 837.0Directional only.
40017½”Dir/DDS/
DGR
837.0 - 2665.0Discrepancy between the two banks of GR data at some intervals in recorded data.
DDS memory filled up due to the extended run (131hours). Maximum recorded depth: 2514 mMDRT.
50017½”Dir/DDS/
DGR
2665.0 - 3208.0No recorded data due to loss of the MWD tool in the hole.
60012¼”Dir/DDS/
DGR/RES
3154.0 - 3158.0Run for deviation control and to accurately locate
casing shoe.
After drilling out the casing shoe the drill string became stuck with bit at 3157.8 mMDRT. String was backed off leaving MWD tools in hole.

BU-D06-ST1
(Measured depths referenced to “High” RT elevation - 58.0 m)
Sperry-Sun Drilling Services ran the open hole LWD logs that are summarised in Table 4.

Table 4: BU-D06-ST1 - Open Hole LWD Logging Suites and Intervals

RunHole sizeTool stringInterval (mMDRT)Comments
700
12¼”Dir3083.5 - 3091.8Orientate whipstock and mill window in 13 ”casing.
800
12¼”DGR-Dir-
DDS-BAT
3091.8 - 3200.0
900
10 "N/A3200.0 - 3203.510 " drill out assembly. No MWD/LWD
1000
12¼”GR-Dir3203.5 – 5022.0Pulser failed at 5022.0 mMDRT.
1100
12¼”GR-Dir5022.0 - 5278.0Pulled out of hole due to mud motor failure
1200
12¼”GR-Dir5278.0 - 6033.0Pulser failed at 5969.0 mMDRT
1300
8 ½”DGR-SLDRES-
CNPDir-
BATACAL
6033.0 - 6341.0No Resistivity SEDP/SEMP data from 6102.0 mMDRT.
ACAL and BAT run in memory only mode.

Wireline Logging

(Measured depths referenced to “High” RT elevation 58.0 m)

Halliburton Logging Services (HLS) provided through drill pipe CCL-GR correlation and drill

string severing services as summarised in Table 5. No open hole logging was performed.

Table 5: BU-D06 - Wireline Logging Suites and Intervals

SuiteRunTool StringInterval (mRT)BHT/Hours Since Circ.Comments
11DCST-CCL-GR3130Unccesfull attempt to back off stuck drill stril at 3130 mMDRT. Perforated but dialed to fully sever string.
2DCST-CCLGR3117Successfully severed stuck drill
string at 3117.4 mMDRT
3CCL-GR3099 - 2990Run to accurately locate top of
fish prior to running whip stock.










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