JPDA PRODUCTION

JPDA: Monthly Production
Barrels of Oil Equivalent (BOE)

Previous 3 months

MonthProduction (BOE)
Mar '173,853,289.38
Apr '172,846,587.03
May '173,251,086.98

Autoridade Nacional do Petróleo

LAFAEK, Well Description

Well: BU-D11

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ANP ID:

D11

Region:

JPDA

Contact Area:

JPDA 03-12

Field Name:

Bayu Undan



Well Type:

Exploration

Classification:

Gas - Condensate



Total depth (m):

5541.4

RKB (m):

58.0

Seabed (m):

79.4

Start:

17-September-2003

Finish:

18-December-2004

Well Data (release):


Status:

Draft


Well Summary

The BU-D11 / BU-D11ST1 / BU-D11ST2 development well was drilled from the BU-DPP platform by the Ensco 104 jackup 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 jackup drilling rig (previously the Chiles Discovery) was on contract on the Bayu-Undan Field on 1st May, 2002 and following completion of drilling, completion and flow testing operations on the BU-WP1 platform the rig was towed to the BUDPP platform jacket where it was pinned on location on 23rd July, 2003.

BU-D11 well was spudded 17th September 2003 and 36” and 26” hole sections were drilled in batch mode along with the upper sections of other DPP wells.



SAMPLES, SIDEWALL CORES CONVENTIONAL CORES

Drill Cuttings

BU-D11

(Measured depths referenced to RT 58.0 m)

Ditch cuttings spot samples for geological description were caught at 10 or 3 m intervals in

the 16” and 10 5/8” x 12 ¼” hole section between 2972.0 m and 6633.0 mMDRT.


Table 1. BU-D11 Ditch Cuttings Sampling Type and Frequency
Interval
mMDRT
Sample Frequency
Sample Type
Distribution
137.4 to 846.4
846.4 to 2972.0
2972.0 to 2980.0
2980.0 to 6630.0
6660.0 to 6633.0
None
10 m
8 m
10 m
3 m
No returns
Spot Samples
Washed & Unwashed
Washed & Unwashed
Washed & Unwashed
Unwashed:
ConocoPhillips 1 set
East Timor Gov’t 1 set

Washed:
ConocoPhillips 1 set
East Timor Gov’t 1 set
Geoscience Aust. 1 set

BU-D11ST1

(Measured depths referenced to RT 58.0 m)

Composite washed and unwashed ditch cuttings samples were collected for storage at 10 m

intervals in the 10 ⅝" x 12 ¼" hole section, between 4753.0 and 5730.0 mMDRT. A ditch

cuttings sampling summary is listed in Table 2.


Table 2. BU-D11ST1 Ditch Cuttings Sampling Type and Frequency
Interval
mMDRT
Sample Frequency
Sample Type
Distribution
4753.0 to 4760.0
4760.0 to 5730.0
7 m
10 m
Washed & Unwashed
Washed & Unwashed
Unwashed:
ConocoPhillips 1 set
East Timor Gov’t 1 set

Washed:
ConocoPhillips 1 set
East Timor Gov’t 1 set
Geoscience Aust. 1 set

BU-D11ST2

(Measured depths referenced to RT 58.0 m)

Composite washed and unwashed ditch cuttings samples were collected for storage at 5 or

10 m intervals in the 10 ⅝" x 12 ¼", 11” and 8 ½" hole sections, between 2970 and 5476

mMDRT. A ditch cuttings sampling summary is listed in Table 3.


Table 3. BU-D11ST2 Ditch Cuttings Sampling Type and Frequency
Interval
mMDRT
Sample Frequency
Sample Type
Distribution
2970.0 to 2990.0
2990.0 to 5180.0
5180.0 to 5183.0
5183.0 to 5185.0
5185.0 to 5475.0
5475.0 to 5476.0
20 m
10 m
3 m
2 m
5 m
1 m
Washed & Unwashed
Washed & Unwashed
Washed & Unwashed
Washed & Unwashed
Washed & Unwashed
Washed & Unwashed
Unwashed:
ConocoPhillips 1 set
East Timor Gov’t 1 set

Washed:
ConocoPhillips 1 set
East Timor Gov’t 1 set
Geoscience Aust. 1 set

Hydrocarbon Shows

Gas shows are summarized .

Cores

No conventional cores were cut.

Sidewall Cores

No sidewall cores were acquired.

LOGGING AND SURVEYS

Mud logging

Sperry-sun Drilling Services provided the mud logging services with formation evaluation and pressure monitoring services from surface to total depth. Drilling rate, calcimetries, lithologies, total gas and chromatographic analysis of the ditch gas are plotted on the mudlog.

LWD Logging
BU-D11
(Measured depths referenced to RT 58.0 m)
Sperry-sun Drilling Services ran the open hole LWD logs that are summarized in Table 4.

Table 4. BU-D11 Open Hole LWD Logging Suites and Intervals
RunHole SizeTool StringInterval (mMDRT)Comments
10036"137.4 – 141.4 No MWD tools run
200 36"
141.4 – 173.9
No MWD tools run
30026"DWD173.9 – 846.4 Ran only Directional tool
40016”DIR/DDS/
DGR
846.4 – 1770.0
500
16”
DIR/DDS/
DGR
1770.0 – 2972.0
60012 ¼”DIR/DDS/
DGR
2972.0 – 4115.0Erratic real time signal due to increased
downhole vibrations and noise.
700
12 ¼”
DIR/DDS/
DGR
4115.0 – 6633.0
80012 ¼”DIR/DDS/
DGR
6633.0 – 6633.0Lost in hole at 4975.4 mMDRT. End of run
time used as time of twist-off.

BU-D11ST1

(Measured depths referenced to RT 58.0 m)
Sperry-Sun Drilling Services ran the open hole LWD logs that are summarized in Table 5.
Table 5. BU-D11ST1 Open Hole LWD Logging Suites and Intervals
Run
Hole size
Tool String
Interval (mMDRT)
Comments
900
12 ¼”
DIR-DGR-DDS
4753.0 – 5730.0Tool lost in hole at 5730 mMDRT. Tool string severed at 3173.0 mMDRT. Severing time used as the end of run.


BU-D11ST2
(Measured depths referenced to RT 58.0 m)
Sperry-Sun Drilling Services ran the open hole LWD logs that are summarized in Table 6.
Table 6. BU-D11ST2 Open Hole LWD Logging Suites and Intervals
Run
Hole size
Tool String
Interval (mMDRT)
Comments
1000
12¼”
DGR-DIR
2970.0 – 3077.0
BU-D11ST2 hole direction indicated that it
was tracking the BU-D11ST1 well bore very
closely and could not break away from it to
kick-off successfully. Had to pull out,
change bit (mill tooth), change angle in
motor (1.5°) and set another kick-off plug.
1100
12¼”
DGR-DIR
2970.0 – 3033.0
Successfully kicked-off ST2.
1200
12¼”
DGR-DIR
3033.0 – 4021.0
Data in the Vee and Wangarlu were quite
bad due to excess downhole noise and
eventual pulser failure.
1300
12 ¼”
DGR-DIR
4021.0 – 4291.0
No resistivity SEDP/SEMP data from
6102.0 mMDRT. ACAL and BAT run in
memory only mode.
1400
12 ¼”
DGR-DIR
4291.0 – 5022.0
1500
11”
PCD-PCG
5022.0 – 5183.0
PCD: Pressure case Directional
PCG: Pressure case Gamma
1600
8 ½”
DIR-DGR/
DDS-SLD-
EWRP4-
CNP-BAT-ACAL
5183.0 – 5292.0
ACAL and BAT in recorded mode only.
Tool quit pulsing after connection at 5282m.
Several attempts were made to restart tool.
On surface no communication with the
HCIM downhole processor.
Recorded data only for BAT and ACAL.
Recovered memory data only to 5260
mMDRT.
1700
8 ½”
DIR-DGR/
DDS-SLD-
EWRP4-
CNP-BAT-ACAL
5292.0 – 5336.0
ACAL and BAT in memory mode only.
Tool stopped pulsing after connection at
5333 mMDRT. Several attempts were
made to restart tool.
1800
8 ½”
DIR-DGR/
DDS-SLD-
EWRP4-
CNP-BAT-ACAL
5336.0 – 5476.0
ACAL and BAT in memory mode only









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