Daily report of USDP-4 since May 2004

Japan Metals and Chemicals Co. Ltd.



July 2
July 3
July 4
July 5
July 6
July 7
July 8

Depth of previous day

1977.40
1977.40
1980.70
1984.20
1995.75


Drilled depth (m)


1980.70
1984.20
1995.75



Wgt On Bit/table rev (t/rpm)


1.5-3.5/60
2-4/60-70
5-6/50, 1-4/58



Hole diameter (inch)

6 core
6 core
6 core
6-1/4 tricone, 6 core



Mud s.g./viscosity


1.01/27-28
1.01-1.02/28
1.02/28-29



In/Out mud temp (C)


28.8-31.7/
30.5-33.5
28.9-29.9/
31.0-32.1
29.7-30.6/
33.8-32.9



Mud loss (kl/h)


2
2-3
1-3



Remarks

Memory gauge recovered failed, reamling down to 1975m, single shot
Single shot (127-144 deg C), coring 1977.4-1980.7 m (68% of core recovery)
Coring 1980.7-1984.2m recovery of 71.4%
Drilling from 1984.2 to 1994 m, single shot. coring
Coring with recovery of 85.7 %, end of drilling operation, memory gauge after 11 and 20 hours of standing (temperature 103-136 deg C after 11 hours, 116-150 deg C after 20 hours)




June 25
June 26
June 27
June 28
June 29
June 30
July 1

Depth of previous day

1812.00
1830.50
1855.40
1889.0
1902.10
1951.00
197.50

Drilled depth (m)

1830.50
1855.40
1889.00
1902.10
1951.00
1975.50
1977.40

Wgt On Bit/table rev (t/rpm)

5/60
5/60, 2/60
2-5/60
5/60, 1-3/60
5/60
5/60
2-4/60

Hole diameter (inch)

6-1/4 tri-cone
6-1/4 tri-cone,
6 core

6-1/4 tri-cone
6 core
6-1/4 tricone, 6 core
6-1/4 tricone
6-1/4 tricone, 6 core
6 core

Mud s.g./viscosity

1.02/28
1.02/30-31
1.01-1.02/
29-30
1.01/28
1.01-1.02/
29-30
1.01/29
1.02/28

In/Out mud temp (C)

32.9/35.3
35.6/39.8, 30.2/32.3
29.7-32.5/
32.4-35.2
40.9-31.7/
44.0-34.0
31.1/37.1, 41.2/44.3
43.7/46.5
33.3/35.3

Mud loss (kl/h)

2-3
2-3
2-3
2
2
2-3

Remarks

Reverse circulation for fulid sampling at 1800 m, drilling w/ tricone bit.
Driling 1830.5-1847 m, single shot, coring, (73-30/60 deg S19 deg E at 1837 m, temperature of 81-85 deg C)
Coring (1855.4-1856.7 m, 92.8 % of recovery), reaming, drilling with tricone bit
Drilling, single shot, corin (89-100 deg C)
Drilling
Drilling, single shot, coring (93 deg C)
Coring 1975.5-1977.4 m, insertion of memory gauges after waiting for temperature recovery


June 18
June 19
June 20
June 21
June 22
June 23
June 24

Depth of previous day

1780.00
1792.00
1800.00
1812.00
1812.00
1812.00
1812.00

Drilled depth (m)

1792.00
1800.00
1812.00




Wgt On Bit/table rev (t/rpm)

2-6/50-60
1-4/60-70
2-6/50-60




Hole diameter (inch)

6 core
6-1/4 tricone
6 core
6 core
6-1/4 tricone




Mud s.g./viscosity

1.01-1.02/30-31
1.02/29-30
1.02/30




In/Out mud temp (C)

26.0-29.8/30-31.4
27.9-29.6/29.7-31.1
35.9/38.5




Mud loss (kl/h)

4-6
3-5





Remarks

Coring 1780-1782.8 m (recovery of 68 %), reaming and drilling (1782.8-1792 m), single shot
Coring 1792-1797.95 m (100% recovery), 1797.95-1800.80 m, 64-80 deg C.
Coring 1800-1800.8 m (100% recovery), reaming, drilling to 1812 m, single shot w/memory gauge, preparation for logging (TLC)
TLC preparation, logging 1st run (SP, GR, sonic, registivity), cable stucking, checking
Testing TLC, succeeded 1st run of logging from 1799 to 1550 m, 2nd run (FMS, GR, neutron)
Logging, preparation of VSP
Setting VSP sonde (wire-lined) down to 737 m depth, and measurement at every 20 m, followed by putting memory gauge of temperature down to 1812 m.


June 11
June 12
June 13
June 14
June 15
June 16
June 17

Depth of previous day

1694.90
1704.00
1708.30
1745.00
1753.30
1754.30
1761.50

Drilled depth (m)

1704.00
1708.30
1745.00
1753.30
1754.30
1761.50
1780.00

Wgt On Bit/table rev (t/rpm)

0-3/70-85
1-3/50-80
2-6/50
2-5/60
1/60
1-4/10-60
6/50-60

Hole diameter (inch)

6 core
6 core, 6-1/4 tricone
6-1/4 tricone
6 core
6 core
6 core
6-1/4 tricone

Mud s.g./viscosity


1.01/30
1.01-1.02/29-30
1.02/30-31
1.02/31
1.02/30-31
1.02/31

In/Out mud temp (C)


22/23.4
28.5-33.6/31.4-36.1
30.8-30.9/32.3-32.8
23.4/25
27.1-27.9/28.8-30.2
34.2/36.8

Mud loss (kl/h)

2-3
2-3
2-3
3-4
2-3
2-3
2-3

Remarks

Coring with recovery of 96 and 92.5 %. Single shot,
Coring (recovery 74.4 %), and drilling, single shot (82-85 deg C), 74 deg S19 deg E
Drilling w/ tricon bit (1708.3-1745 m)
Single shot (72-89 deg C), coring (recovery 94 %), 73-30/60 deg S19 deg E.
Memory gauge, coring
Coring 1754.3-1757.9 m (recovery 100 %)
Drilling with tricone bit, single shot 73 deg S19 deg E at 1770 m, 74-68 deg C.


June 4
June 5
June 6
June 7
June 8
June 9
June 10

Depth of previous day

1555.00
1555.00
1555.00
1570.50
1584.30
1613.00
1685.50

Drilled depth (m)



1570.50
1584.30
1613.00
1685.50
1694.90

Wgt On Bit/table rev (t/rpm)


3-4/40
5/50
3-6/50-60
3-6/60
5-6/50
2-6/70

Hole diameter (inch)

8-5/8
6-1/4
6-1/4
6-1/4 tricon. 6-7/32 coring
6-1/4 tricon, 6-7/32 coring
6-1/4
6-1/4
6 coring

Mud s.g./viscosity



1.01/31
1.01/30-31
1.01-1.02/30-32
1.02/31-32
1.02/32

In/Out mud temp (C)



31/34
27-33/27-37
26-33/29-34
31-36.4/35-38.1
25/27

Mud loss (kl/h)


5
2-6
3.5-5
4-5
3-4
2-4

Remarks

7-inch liner setting, hanger set at 747.83 m, liner cementing (12.6 tons of cement with density of 1.80), preparation of 6-1/4 inch drilling
Preparation of 6-1/4 inch drilling, reaming
Reaming, drilling
Drilling, single-shot for orientation, reaming, coring
(72-30-60 deg S19deg E at 1572 m)
Temperature during single-shot is 60-63 deg C.
Coring 1584.3-1590.7 m, core recovery 100 %, reaming, drilling
Drilling
Drilling, single shot, Setting memory gauge to get a temperature profile to the well bottom with standing time 7hr10m, coring
(73-20/60 deg S19deg E at 1680 m)


May 28
May 29
May 30
May 31
June 1
June 2
June 3

Depth of previous day

1466.00
1474.00
1529.00
1555.00
1555.00
1555.00
1555.00

Drilled depth (m)

1474.00
1529.00
1555.00
1555.00



Wgt On Bit/table rev (t/rpm)

13-14/DHM 7/40
12-15/DHM 7/40
13-15/DHM 7/40




Hole diameter (inch)

8-5/8
8-5/8
8-5/8
8-5/8
8-5/8
8-5/8
8-5/8

Mud s.g./viscosity

1.02/33
1.02/31
1.02/32




In/Out mud temp (C)

25/28
28-31/31-32
34/35




Mud loss (kl/h)

8
7-8





Remarks

DHM boken, exchanging DHM and bit, DHM drilling
DHM drilling, sending sweep mud, cleaning.
Setting gas sensor (CO, H2S, and O2), gas masks, air respirators and blower on deck.
(73-36/60 deg S20-04/60 deg E at 1477 m, 73-30/60 deg S18-34/60 deg E at 1504 m)
H2S (=<30 ppm) and CH4 (=<12 ppm) were detected by GFZ mud log during cleaning.
DHM drilling, sending sweep mud, cleaning, back reaming, pulling off of all pipes (72-47/60 deg and S15-10/60 deg E at 1534 m)
Reaming, cleaning, back reaming, preparation of logging
Logging down to 1540m
1st run (FMI, SP, GR, sonic, resistivity
Logging
down to 1540 m
2nd run denisity, SP, GR
gauging, reaming, preparation of casing set, connecting liner hanger


May 21
May 22
May 23
May 24
May 25
May 26
May 27

Depth of previous day

1180.00
1202.40
1248.00
1292.40
1313.00
1379.00
1420.00

Drilled depth (m)

1202.40
1248.00
1291.90
1313.0
1379.00
1420.00
1466.00

Wgt On Bit/table rev (t/rpm)

8-9/DHM 5-6/30
9-11/DHM 5-7/30
8-11/DHM 5-7/30
9-14/DHM 7/40
12-15/DHM 6-7/40
12-13/DHM 6-7/40
12-17/DHM 7/40-50

Hole diameter (inch)

8-5/8
8-5/8
8-5/8
8-5/8
8-5/8
8-5/8
8-5/8

Mud s.g./viscosity

1.02-1.03/31
1.02/30
1.02/28
1.02/33
1.03/36-37
1.03/32-34
1.02/32-33

In/Out mud temp (C)

20-21/21-22
23-24/24
23-24/24-25
22/23
26-27/28-29
27/29
28/29-33

Mud loss (kl/h)

0
10
9-10
10
8-10
8-9
8-9

Remarks

Battery change of EM-MWD, reaming, DHM drilling
DHM drilling, reaming, sending sweep mud
(73-50/60 deg S13-25/60 deg E at 1189 m, 74-32/60 deg S15-36///60 deg E at 1226 m)
DHM drilling, reaming, sending sweep mud
(74-20/60 deg S13-49/60 deg E at 1254 m)
DHM drilling, changing drilling tool combination, sending sweep mud, loaded around 886 m, reaming, DHM drilling
(74-19/60 deg S14-01/60 deg E at 1273 m)
DHM drilling, sending sweep mud
(73-31/60 deg S14-31/60 deg E at 1311 m, 73-03/60 deg S14-9/60 deg E at 1338 m)
DHM drilling, sending sweep mud, backreaming
(73-55/60 deg S17-54/60 deg E at 1366 m, 73-55/60 deg S19-40/60 deg E at 1394 m)
DHM drilling, sending sweep mud, back reaming-wipertrip
(73-52/60 deg S18-43/60 deg E at 1428 m, 73-53/60 deg S18-46/60 deg E at 1449 m)



May 14
May 15
May 16
May 17
May 18
May 19
May 20

Depth of previous day

812
856.50
923.50
985.00
1022.70
1081.20
1131.30

Drilled depth (m)

856.50
923.50
985.00
1022.70
1081.20
1131.30
1180.00

Wgt On Bit/table rev (t/rpm)

5-6/DHM
6-10/DHM 5-6/30
7-10/DHM 5-6/30
10/DHM 6-7/30
8-12/DHM 5-8/30
6-10/DHM 5-6/30
7-9/DHM 4-6/30

Hole diameter (inch)

8-5/8
8-5/8
8-5/8
8-5/8
8-5/8
8-5/8
8-5/8

Mud s.g./viscosity

1.01-1.03/30-36
1.03/35-36
1.02/34-36
1.02-1.03/35-36
1.02/34-36
1.01/32-33
1,01-1,02/30-32

In/Out mud temp (C)

20/23
22-23/23-25
19-22/19-22
21-16/19-17
19-20/20
19/19-20
19-22/23

Mud loss (kl/h)

0
0
65 to 14
18 to 13
10-20
7-10
8-10

Remarks

Reaming, drilling with DHM+MWDat (70-20/60 deg S4-54/60W at 812.5 m depth)
DHM drilling
(69-53/60 deg S3-36/60 deg W at 822 m, 69-32/60 deg S1deg W at 849 m, 70-10/60 deg S1-42/60 deg at 886 m)
DHM drilling, lost circulation at 924.5 m
(71-6/60 deg S3-35/60E at 904 m, 71-44/60 deg S3-36/60 degE at 932 m)
Drilling with DJM, cleaning
(71-46/60 deg S4-28/60E at 959 m, 72-7/60 deg S7-18/60 E deg at 996 m)
DHM drilling, reaming, addition of HWDP (72-43/60 deg S10-59/60 deg E at 1005 m, 73 deg S12-50/60 deg E at 1061 m)
HWDP drilling (72-39/60 deg S8-54/60 deg E at 1088 m)
DHM drilling, back reaming (72-47/60 deg S9-54/60 deg E at 1116 m. 73-38 deg S11-25/60 deg E at 1162 m)



May 7
May 8
May 9
May 10
May 11
May 12
May 13

Depth of previous day

824.00
824.00
824.00
824.00
824.00
824.00
824.00

Drilled depth (m)







(812)

Wgt On Bit/table rev (t/rpm)







3-4

Hole diameter (inch)







8-5/8"

Mud s.g./viscosity







1.01/30

In/Out mud temp (C)







17/17

Mud loss (kl/h)







0

Remarks

Preparation of resumption of drilling (working coffice, water supply, DP, DC, STAB, oil tank)
Preparation of resumption of drilling (generator, centrifuge, electricity, TDS introduction)
Preparation of resumption of drilling (TDS setting, DP, Casing introduction, electrical wiring, water lining, solid control setting)
Preparation of resumption of drilling (TDS setting, water lining, electrical wiring, test operation, mud introduction)
Preparation of resumption of drilling
(TDS; torctrack & guiderail, water lining, electrical wiring, water pumping test, emergency slide setting, pipe ruck setting)
Preparation of resumption of drilling (TDS details setting, water pumping test, introduction of DP, DC, JAR etc)
Pulling out of bore-hole -assemblage used for anchor during suspension period, assemble of reaming pipes, temperature logging, reaming). Temperature at 735 m depth is 21 deg. C.

*Preparation of resumption of drilling in early May.


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