|
Core
|
Date
(2010)
|
Time
(UTC)
|
Depth (mbsf)
|
Length (m)
|
Recovery
(%)
|
Comments
|
|
Top
|
Bottom
|
Cored
|
Recovered
|
|
325-M0030A-
|
|
1R
|
13 Feb
|
1000
|
0
|
3
|
3
|
0.06
|
2.00
|
|
|
2X
|
13 Feb
|
1145
|
3
|
6
|
3
|
0.18
|
6.00
|
Shoe blocked with loose carbonate sand. Sample wire twisted on this run—repairs necessitated pulling out of the seabed.
|
|
325-M0030B-
|
|
1R
|
13 Feb
|
2245
|
0
|
3
|
3
|
0.19
|
6.33
|
|
|
2R
|
13 Feb
|
2340
|
3
|
6
|
3
|
0.18
|
6.00
|
|
|
3R
|
14 Feb
|
600
|
6
|
9
|
3
|
0.18
|
6.00
|
Barrel stuck and winch cable snapped trying to recover it. Hole aborted.
|
|
325-M0031A-
|
|
1R
|
14 Feb
|
1825
|
0
|
3
|
3
|
0
|
0.00
|
|
|
2R
|
14 Feb
|
1945
|
3
|
6
|
3
|
0.42
|
14.00
|
|
|
3R
|
14 Feb
|
2035
|
6
|
9
|
3
|
0.43
|
14.33
|
|
|
4R
|
14 Feb
|
2335
|
9
|
12
|
3
|
0.24
|
8.00
|
|
|
5R
|
15 Feb
|
0130
|
12
|
12
|
0
|
0
|
0.00
|
High water pressure—flushing with mud. Hole collapsed as barrel recovered—reaming and further flushing.
|
|
6W
|
15 Feb
|
0330
|
8.6
|
12
|
3.4
|
0.16
|
4.71
|
Hole collapsed while sending barrel down—infill only drilled. When recovered, inner barrel jammed in outer with sediments.
|
|
7R
|
15 Feb
|
0830
|
12
|
15
|
3
|
0.24
|
8.00
|
|
|
8R
|
15 Feb
|
0930
|
15
|
18
|
3
|
0.55
|
18.33
|
|
|
9R
|
15 Feb
|
1200
|
18
|
20.5
|
2.5
|
0.17
|
6.80
|
Barrel stuck. Recover overshot, flush with mud, cut and reterminate damaged wireline, and finally recover barrel.
|
|
10R
|
15 Feb
|
1300
|
20.5
|
23.5
|
3
|
0.4
|
13.33
|
Reaming before next run.
|
|
11R
|
15 Feb
|
1340
|
23.5
|
26.5
|
3
|
0.25
|
8.33
|
|
|
12R
|
15 Feb
|
1540
|
26.5
|
28
|
1.5
|
0.33
|
22.00
|
Running ALN with splits—string pressurizing immediately. Recover barrel to adjust length of inner barrel.
|
|
13R
|
15 Feb
|
1830
|
28
|
31
|
3
|
1.56
|
52.00
|
|
|
14R
|
15 Feb
|
1930
|
31
|
34
|
3
|
0.19
|
6.33
|
|
|
15R
|
15 Feb
|
2020
|
34
|
37
|
3
|
0.25
|
8.33
|
Reaming prior to adding another API pipe. Hole closed again, so further reaming before coring commenced.
|
|
16R
|
15 Feb
|
2310
|
37
|
40
|
3
|
0.05
|
1.67
|
|
|
17R
|
16 Feb
|
0150
|
40
|
43
|
3
|
0.44
|
14.67
|
|
|
325-M0032A-
|
|
1R
|
16 Feb
|
1200
|
0
|
1.8
|
1.8
|
0.55
|
30.56
|
Using basket and metal splits. String overpressurizing and hole caving.
|
|
2R
|
16 Feb
|
1330
|
1.8
|
4.8
|
3
|
0
|
0.00
|
String overpressurizing—trip ALN to free it and flush.
|
|
3R
|
16 Feb
|
1650
|
4.8
|
7.8
|
3
|
0.6
|
20.00
|
|
|
4R
|
16 Feb
|
1720
|
7.8
|
10.3
|
2.5
|
0.44
|
17.60
|
Core barrel free-fell last 70 cm—possible cavity?
|
|
5R
|
16 Feb
|
1820
|
10.3
|
12.3
|
2
|
0.2
|
10.00
|
Revert back to liner tube and core spring.
|
|
6M
|
16 Feb
|
1910
|
12.3
|
12.3
|
0
|
0
|
0.00
|
|
|
7R
|
16 Feb
|
1935
|
12.3
|
14.3
|
2
|
0.45
|
22.50
|
|
|
8R
|
16 Feb
|
2030
|
14.3
|
16.3
|
2
|
0.75
|
37.50
|
|
|
9R
|
16 Feb
|
2135
|
16.3
|
17.5
|
1.2
|
0.25
|
20.83
|
|
|
10R
|
16 Feb
|
2300
|
17.5
|
17.8
|
0.3
|
0.46
|
153.33
|
|
|
11R
|
17 Feb
|
0015
|
17.8
|
19.8
|
2
|
0.54
|
27.00
|
|
|
12R
|
17 Feb
|
0100
|
19.8
|
21.8
|
2
|
0.16
|
8.00
|
Bit heavily blocked with sediment.
|
|
13R
|
17 Feb
|
0200
|
21.8
|
23.8
|
2
|
0.41
|
20.50
|
|
|
14R
|
17 Feb
|
0300
|
23.8
|
25.8
|
2
|
0.31
|
15.50
|
|
|
15R
|
17 Feb
|
0335
|
25.8
|
26.8
|
1
|
0.23
|
23.00
|
|
|
16R
|
17 Feb
|
0530
|
26.8
|
28.8
|
2
|
0.27
|
13.50
|
Switch back to splits as liners ovalized in the heat.
|
|
17R
|
17 Feb
|
0645
|
28.8
|
30.8
|
2
|
0
|
0.00
|
|
|
18R
|
17 Feb
|
0730
|
30.8
|
32.8
|
2
|
0.16
|
8.00
|
|
|
19R
|
17 Feb
|
0835
|
32.8
|
34.8
|
2
|
0.21
|
10.50
|
Switch back to core spring and liner.
|
|
20R
|
17 Feb
|
0950
|
34.8
|
36.7
|
1.9
|
0
|
0.00
|
|
|
325-M0033A-
|
|
1R
|
17 Feb
|
1530
|
0
|
1.5
|
1.5
|
0.37
|
24.67
|
Fluorescent microspheres.
|
|
2R
|
17 Feb
|
1610
|
1.5
|
3
|
1.5
|
0.43
|
28.67
|
|
|
3R
|
17 Feb
|
1655
|
3
|
4.5
|
1.5
|
0.43
|
28.67
|
|
|
4R
|
17 Feb
|
1725
|
4.5
|
6
|
1.5
|
0.4
|
26.67
|
|
|
5R
|
17 Feb
|
1810
|
6
|
7.5
|
1.5
|
1.43
|
95.33
|
|
|
6R
|
17 Feb
|
2050
|
7.5
|
8.3
|
0.8
|
0.32
|
40.00
|
|
|
7R
|
17 Feb
|
2150
|
8.3
|
9.8
|
1.5
|
0.64
|
42.67
|
|
|
8R
|
17 Feb
|
2230
|
9.8
|
11.3
|
1.5
|
0.4
|
26.67
|
|
|
9R
|
17 Feb
|
2320
|
11.3
|
12.8
|
1.5
|
0.32
|
21.33
|
|
|
10R
|
18 Feb
|
0000
|
12.8
|
14.3
|
1.5
|
0.68
|
45.33
|
|
|
11R
|
18 Feb
|
0050
|
14.3
|
15.8
|
1.5
|
0.56
|
37.33
|
|
|
12R
|
18 Feb
|
0230
|
15.8
|
16.8
|
1
|
0.81
|
81.00
|
Torn core liner. Bit showing signs of fragmenting.
|
|
13R
|
18 Feb
|
0330
|
16.8
|
18.3
|
1.5
|
0.83
|
55.33
|
|
|
14R
|
18 Feb
|
0415
|
18.3
|
19.8
|
1.5
|
0.51
|
34.00
|
|
|
15R
|
18 Feb
|
0525
|
19.8
|
20.8
|
1
|
0.66
|
66.00
|
|
|
16R
|
18 Feb
|
0700
|
20.8
|
22.3
|
1.5
|
0.98
|
65.33
|
Barrel stuck broken latch head dog on recovery.
|
|
17R
|
18 Feb
|
0800
|
22.3
|
22.3
|
0
|
0
|
0.00
|
Barrel recovered as water pressure excessively high. Liner found to be crushed to half its original length.
|
|
18R
|
18 Feb
|
0900
|
22.3
|
23.8
|
1.5
|
0.55
|
36.67
|
|
|
19R
|
18 Feb
|
0945
|
23.8
|
25.3
|
1.5
|
0.39
|
26.00
|
|
|
20R
|
18 Feb
|
1045
|
25.3
|
26.8
|
1.5
|
0.45
|
30.00
|
|
|
21R
|
18 Feb
|
1130
|
26.8
|
28.3
|
1.5
|
0.82
|
54.67
|
|
|
22R
|
18 Feb
|
1220
|
28.3
|
29.8
|
1.5
|
0.96
|
64.00
|
|
|
23R
|
18 Feb
|
1335
|
29.8
|
32.8
|
3
|
0.47
|
15.67
|
|
|
325-M0034A-
|
|
1R
|
19 Feb
|
0020
|
0
|
1.5
|
1.5
|
0.94
|
62.67
|
Fluorescent microspheres.
|
|
2R
|
19 Feb
|
0110
|
1.5
|
3
|
1.5
|
0.57
|
38.00
|
|
|
3R
|
19 Feb
|
0155
|
3
|
4.5
|
1.5
|
0
|
0.00
|
|
|
4R
|
19 Feb
|
0255
|
4.5
|
6
|
1.5
|
0.61
|
40.67
|
|
|
5R
|
19 Feb
|
0335
|
6
|
7.5
|
1.5
|
0
|
0.00
|
|
|
6R
|
19 Feb
|
0410
|
7.5
|
9
|
1.5
|
0
|
0.00
|
Reduce shoe to bit air gap to decrease mud flow and limit flushing of unconsolidated material.
|
|
7R
|
19 Feb
|
0520
|
9
|
11.1
|
2.1
|
0.26
|
12.38
|
Running HQ pipe after this run.
|
|
8R
|
19 Feb
|
1150
|
11.1
|
12.6
|
1.5
|
0.54
|
36.00
|
|
|
9R
|
19 Feb
|
1315
|
12.6
|
14.1
|
1.5
|
1.02
|
68.00
|
|
|
10R
|
19 Feb
|
1350
|
14.1
|
15.6
|
1.5
|
0.68
|
45.33
|
|
|
11R
|
19 Feb
|
1430
|
15.6
|
17.1
|
1.5
|
0.85
|
56.67
|
|
|
12R
|
19 Feb
|
1500
|
17.1
|
18.6
|
1.5
|
0.74
|
49.33
|
Bit blocked. Flushed with mud to clear cuttings after freeing it.
|
|
13R
|
20 Feb
|
1010
|
18.6
|
20.1
|
1.5
|
0.18
|
12.00
|
Running ALN instead of HQ.
|
|
14R
|
20 Feb
|
1100
|
20.1
|
21.6
|
1.5
|
0.22
|
14.67
|
|
|
15R
|
20 Feb
|
1145
|
21.6
|
23.1
|
1.5
|
0
|
0.00
|
Poor recovery—tripping barrel and putting on a new impregnated bit.
|
|
16W
|
20 Feb
|
1500
|
23.1
|
23.1
|
0
|
0.1
|
0.00
|
Overpressurizing—recover barrel.
|
|
325-M0035A-
|
|
1R
|
27 Feb
|
1200
|
0
|
0.7
|
0.7
|
0.06
|
8.57
|
Fluorescent microspheres.
|
|
2R
|
27 Feb
|
1250
|
0.7
|
2.2
|
1.5
|
0.02
|
1.33
|
Hole collapsing after retrieving barrel.
|
|
3R
|
27 Feb
|
1630
|
2.2
|
4.08
|
1.88
|
0.47
|
25.00
|
|
|
4R
|
27 Feb
|
1735
|
4.08
|
5.58
|
1.5
|
0.15
|
10.00
|
Bit blocked—pumping and reaming to free. Not successful so use hammer sampler.
|
|
5R
|
27 Feb
|
2250
|
5.58
|
7.08
|
1.5
|
1.13
|
75.33
|
|
|
6R
|
27 Feb
|
2325
|
7.08
|
8.58
|
1.5
|
0.38
|
25.33
|
Problem recovering inner barrel—broken dog on latch head.
|
|
7R
|
28 Feb
|
0550
|
8.58
|
10.08
|
1.5
|
0.42
|
28.00
|
|
|
8R
|
28 Feb
|
0700
|
10.08
|
11.58
|
1.5
|
1.04
|
69.33
|
|
|
9R
|
28 Feb
|
0750
|
11.58
|
12.58
|
1
|
0.52
|
52.00
|
|
|
10R
|
28 Feb
|
1100
|
12.58
|
14.08
|
1.5
|
0.92
|
61.33
|
Possibly some infill at BHA.
|
|
11R
|
28 Feb
|
1240
|
14.08
|
15.58
|
1.5
|
0.6
|
40.00
|
|
|
12R
|
28 Feb
|
1410
|
15.58
|
16.48
|
0.9
|
0.8
|
88.89
|
|
|
13R
|
28 Feb
|
1520
|
16.48
|
17.88
|
1.4
|
0.75
|
53.57
|
|
|
14R
|
28 Feb
|
1615
|
17.88
|
19.38
|
1.5
|
0.56
|
37.33
|
|
|
15R
|
28 Feb
|
1815
|
19.38
|
20.88
|
1.5
|
0.51
|
34.00
|
|
|
16R
|
28 Feb
|
1935
|
20.88
|
22.38
|
1.5
|
0.42
|
28.00
|
|
|
17R
|
28 Feb
|
2045
|
22.38
|
23.88
|
1.5
|
0.51
|
34.00
|
|
|
18R
|
28 Feb
|
2245
|
23.88
|
25.38
|
1.5
|
0.55
|
36.67
|
|
|
19R
|
01 Mar
|
0100
|
25.38
|
26.16
|
0.78
|
0.76
|
97.44
|
|
|
20R
|
1 Mar
|
0210
|
26.16
|
27.66
|
1.5
|
0.44
|
29.33
|
Broken dog on latch head. Pressure very high on next run attempt—recover barrel without drilling. Inner and outer barrels jammed by sand.
|
|
21W
|
1 Mar
|
0410
|
27.66
|
27.66
|
0
|
0.9
|
0.00
|
|
|
22R
|
1 Mar
|
0625
|
27.66
|
28
|
0.34
|
0
|
0.00
|
Hole collapsed after 0.5 m—reaming with mud.
|
|
23R
|
1 Mar
|
0745
|
28
|
29.9
|
1.9
|
0.32
|
16.84
|
|
|
325-M0036A-
|
|
1R
|
1 Mar
|
1150
|
0
|
1.5
|
1.5
|
0
|
0.00
|
Very quick penetration.
|
|
2R
|
1 Mar
|
1250
|
1.5
|
3.5
|
2
|
0.15
|
7.50
|
Very quick penetration—recovery includes seabed fauna sample suggesting string is “skipping” down a slope.
|
|
3W
|
1 Mar
|
1400
|
3.5
|
3.5
|
0
|
1.04
|
0.00
|
|
|
4R
|
1 Mar
|
1440
|
3.5
|
5
|
1.5
|
1.83
|
122.00
|
|
|
5R
|
1 Mar
|
1530
|
5
|
6.5
|
1.5
|
0.24
|
16.00
|
|
|
6R
|
1 Mar
|
1600
|
6.5
|
8
|
1.5
|
0.05
|
3.33
|
|
|
7R
|
1 Mar
|
1650
|
8
|
9.5
|
1.5
|
0.08
|
5.33
|
|
|
8R
|
1 Mar
|
1730
|
9.5
|
11
|
1.5
|
0.3
|
20.00
|
|
|
9R
|
1 Mar
|
1830
|
11
|
12.5
|
1.5
|
0.35
|
23.33
|
Combination catcher/core lifter wrecked—possibly stopped core recovery. Revert to core spring only.
|
|
10R
|
1 Mar
|
1940
|
12.5
|
14
|
1.5
|
0.25
|
16.67
|
|
|
11R
|
1 Mar
|
2020
|
14
|
15.5
|
1.5
|
0.82
|
54.67
|
|
|
12R
|
1 Mar
|
2100
|
15.5
|
17
|
1.5
|
0.46
|
30.67
|
|
|
13R
|
1 Mar
|
2140
|
17
|
18.5
|
1.5
|
0.28
|
18.67
|
|
|
14R
|
1 Mar
|
2230
|
18.5
|
20.5
|
2
|
0.54
|
27.00
|
|
|
15R
|
1 Mar
|
2320
|
20.5
|
22
|
1.5
|
0.33
|
22.00
|
|
|
16R
|
2 Mar
|
0000
|
22
|
23.5
|
1.5
|
0.3
|
20.00
|
|
|
17R
|
2 Mar
|
0100
|
23.5
|
25
|
1.5
|
0.47
|
31.33
|
|
|
18R
|
2 Mar
|
0135
|
25
|
26.5
|
1.5
|
0.28
|
18.67
|
|
|
19R
|
2 Mar
|
0200
|
26.5
|
28
|
1.5
|
0.33
|
22.00
|
|
|
20R
|
2 Mar
|
0240
|
28
|
29.5
|
1.5
|
0.37
|
24.67
|
|
|
21R
|
2 Mar
|
0310
|
29.5
|
31
|
1.5
|
0.44
|
29.33
|
Barrel downhole—blocked with sand—use hammer sampler.
|
|
22R
|
2 Mar
|
0600
|
31
|
34
|
3
|
0
|
0.00
|
|
|
325-M0037A-
|
|
1R
|
3 Mar
|
1330
|
0
|
1.5
|
1.5
|
1.83
|
122.00
|
Fluorescent microspheres.
|
|
2R
|
3 Mar
|
1420
|
1.5
|
3
|
1.5
|
0.25
|
16.67
|
|
|
3R
|
3 Mar
|
1520
|
3
|
4.5
|
1.5
|
0
|
0.00
|
While tripping barrel, drill string sank by 0.5 m. On pulling back the hole partially collapsed—three hammer runs required to clear it.
|
|
4R
|
3 Mar
|
1630
|
4.5
|
6
|
1.5
|
0.1
|
6.67
|
|
|
5R
|
3 Mar
|
1715
|
6
|
7.5
|
1.5
|
0.26
|
17.33
|
|
|
6R
|
3 Mar
|
1750
|
7.5
|
9.5
|
2
|
0.34
|
17.00
|
Trap poly bag between the sleeve and basket to try to improve recovery.
|
|
7R
|
3 Mar
|
1845
|
9.5
|
11
|
1.5
|
0.5
|
33.33
|
Trap poly bag between the sleeve and basket to try to improve recovery.
|
|
8R
|
3 Mar
|
1930
|
11
|
12.5
|
1.5
|
0.78
|
52.00
|
Trap poly bag between the sleeve and basket to try to improve recovery.
|
|
9R
|
3 Mar
|
2030
|
12.5
|
14
|
1.5
|
0.72
|
48.00
|
Trap poly bag between the sleeve and basket to try to improve recovery.
|
|
10R
|
3 Mar
|
2120
|
14
|
15.5
|
1.5
|
1.55
|
103.33
|
Trap poly bag between the sleeve and basket to try to improve recovery.
|
|
11R
|
3 Mar
|
2210
|
15.5
|
17
|
1.5
|
0.43
|
28.67
|
|
|
12R
|
3 Mar
|
2250
|
17
|
18
|
1
|
0.12
|
12.00
|
Trap poly bag between the sleeve and basket to try to improve recovery.
|
|
13R
|
3 Mar
|
2345
|
18
|
19.5
|
1.5
|
0.51
|
34.00
|
|
|
14R
|
4 Mar
|
0050
|
19.5
|
21
|
1.5
|
0.13
|
8.67
|
|
|
325-M0038A-
|
|
1R
|
4 Mar
|
1545
|
0
|
1.5
|
1.5
|
0.18
|
12.00
|
Fluorescent microspheres. Drill string fell quickly. On recovery bit found to be destroyed. Decision to bump over 2 m to avoid broken drill fragments.
|
|
325-M0039A-
|
|
1R
|
4 Mar
|
1700
|
0
|
1.5
|
1.5
|
0.65
|
43.33
|
|
|
2R
|
4 Mar
|
1750
|
1.5
|
3
|
1.5
|
0.34
|
22.67
|
|
|
3R
|
4 Mar
|
1850
|
3
|
4.5
|
1.5
|
0.56
|
37.33
|
|
|
4R
|
4 Mar
|
1940
|
4.5
|
6
|
1.5
|
0.62
|
41.33
|
|
|
5R
|
4 Mar
|
2020
|
6
|
7.5
|
1.5
|
0.45
|
30.00
|
|
|
6R
|
4 Mar
|
2110
|
7.5
|
9
|
1.5
|
0.46
|
30.67
|
|
|
7R
|
4 Mar
|
2150
|
9
|
10
|
1
|
0.57
|
57.00
|
|
|
8R
|
4 Mar
|
2230
|
10
|
11.5
|
1.5
|
0.93
|
62.00
|
|
|
9R
|
4 Mar
|
2340
|
11.5
|
13
|
1.5
|
0.66
|
44.00
|
After this run, next three attempts to core failed with no advance made. High pressure caused recovery without drilling—latch head assembly and inner barrel plunger blocked with sediment on all occasions.
|
|
10R
|
5 Mar
|
0400
|
13
|
14
|
1
|
0.99
|
99.00
|
|
|
11R
|
5 Mar
|
0545
|
14
|
15.1
|
1.1
|
0.32
|
29.09
|
Core lifter twisted out of shoe and into core causing blockage.
|
|
12R
|
5 Mar
|
0720
|
15.1
|
15.6
|
0.5
|
0.66
|
132.00
|
|
|
13R
|
5 Mar
|
0810
|
15.6
|
17.1
|
1.5
|
0.29
|
19.33
|
|
|
14R
|
5 Mar
|
0845
|
17.1
|
18.6
|
1.5
|
0.73
|
48.67
|
|
|
15R
|
5 Mar
|
0920
|
18.6
|
19.4
|
0.8
|
0.44
|
55.00
|
|
|
16R
|
5 Mar
|
1005
|
19.4
|
20.9
|
1.5
|
0.63
|
42.00
|
|
|
17R
|
5 Mar
|
1045
|
20.9
|
22.4
|
1.5
|
0.26
|
17.33
|
Baked disk of core at leading edge of shoe.
|
|
18R
|
5 Mar
|
1125
|
22.4
|
23.9
|
1.5
|
0.08
|
5.33
|
Barrel was initially stuck for 10 min. On recovery, it is believed the core slipped out.
|
|
19R
|
5 Mar
|
1240
|
23.9
|
25.4
|
1.5
|
0
|
0.00
|
Bit blocked—possibly due to slipped core from previous run.
|
|
20R
|
5 Mar
|
1320
|
25.4
|
26.9
|
1.5
|
0.38
|
25.33
|
|
|
21R
|
5 Mar
|
1355
|
26.9
|
28.4
|
1.5
|
0.37
|
24.67
|
|
Note: UTC = Universal Time Coordinated, ALN = alien corer (standard rotary corer), API = American Petroleum Institute, BHA = bottom-hole assembly.