Ocean Drilling Program: Leg 206 Preliminary Report

Table T3. Operations conducted during Leg 206.

Hole

Activity

Time (local)

Date (2002)

Operation on hole

Time
on hole (hr)

Time
on site (hr)

Time on site
(days)

Comments

1256A
On location with GPS

1630

Nov 14

Spud at 0640 hr on 15 Nov

Clear seafloor 1256A

0645

Nov 15

14.25
14.25
0.59
Objective attained

1256B
Clear seafloor 1256A

0645

Nov 15

Spud at 0815 hr on 15 Nov

Bit at rotary table

0630

Nov 17

47.75
62.00
2.58
Basement reached

1256C
Bit at rotary table

0630

Nov 17

Spud at 1515 hr on 17 Nov

EOP at rotary table

0345

Nov 23

141.25
203.25
8.47
Depth objective attained

1256D
EOP at rotary table

0345

Nov 23
Jet-in 20-in casing

Spud reentry cone and casing

1035

Nov 24
End jetting
30.83
234.08
9.75
Reach 95 mbsf; release CADA

2015

Nov 24
Bit at rotary table
9.67
243.75
10.16
Change to bi-reamer BHA

0620

Nov 25
Reentry 1
10.08
253.83
10.58
Enter cone with bi-reamer BHA

0815

Nov 25
Begin drilling
1.92
255.75
10.66
Start 21.5-in hole at 95 mbsf

0445

Nov 27
End drilling
44.50
300.25
12.51
Stop at ~17 m into basement

1300

Nov 27
Bit at rotary table
8.25
308.50
12.85
Failed bit bearing put junk in hole

2140

Nov 27
Reentry 2
8.67
317.17
13.22
Reenter with 2X junk basket BHA

0000

Nov 28
Start cleaning
2.33
319.50
13.31
Work junk baskets

0330

Nov 28
End cleaning
3.50
323.00
13.46
Advance 1 m into basement

0505

Nov 28
Clear seafloor
1.58
324.58
13.52
Recover drill string

1140

Nov 28
Bit at rotary table
6.58
331.17
13.80
Change to bi-reamer BHA

1755

Nov 28
Reentry 3
6.25
337.42
14.06
Enter cone with bi-reamer BHA

2000

Nov 28
Begin drilling
2.08
339.50
14.15
Resume 21.5-in hole at ~17 m in basement

0030

Nov 30
Begin wiper trip
28.50
368.00
15.33
TD hole at 276.1 mbsf (26.1 m in basement)

0415

Nov 30
Displace hole
3.75
371.75
15.49
150 bbl sepiolite; 100 bbl barite

0700

Nov 30
Clear seafloor
2.75
374.50
15.60
Recover drill string

1330

Nov 30
Bit at rotary table
6.50
381.00
15.88
Rig-up for 16-in casing

0417

Dec 1
Casing wet at 0417 hr
14.78
395.78
16.49
End making up casing

1040

Dec 1
Detect crushed joint
6.38
402.17
16.76
Stop running casing

0004

Dec 2
Recover casing
13.40
415.57
17.32
Replace four joints and casing collar

1135

Dec 2
Casing wet at 1135 hr
11.52
427.08
17.80
End repair of casing string

2008

Dec 2
Reentry 4
8.55
435.63
18.15
Weather getting bad; heave = ~2.5 m

2315

Dec 2
Clear seafloor
3.12
438.75
18.28
POOH due to heave = ~4 m

0650

Dec 3
Reentry 5
7.58
446.33
18.60
WOW for 5.75 hr

1730

Dec 3
Land casing
10.67
457.00
19.04
Work stuck casing for 3.75 hr

1745

Dec 3
Cement casing
0.25
457.25
19.05
30 bbl cement

2115

Dec 3
Clear seafloor
3.50
460.75
19.20
Release CADA running tool

0500

Dec 4
CADA tool on surface
7.75
468.50
19.52
Detorque CADA tool

0630

Dec 4
Begin to run in hole
1.50
470.00
19.58
Make up bit 1: CC4 SN BX-020

1500

Dec 4
Reentry 6
8.50
478.50
19.94
Quick reentry

1815

Dec 4
Start to drill cement
3.25
481.75
20.07
Attempted core/dropped chisel

0955

Dec 5
Clear seafloor
15.67
497.42
20.73
Tested bottom of hole and found junk

1615

Dec 5
Bit at rotary table
6.33
503.75
20.99
Change to Bowen fishing magnet

2358

Dec 5
Reentry 7
7.72
511.47
21.31
Quick reentry

0230

Dec 6
Start fishing
2.53
514.00
21.42
Work junk baskets and magnet 1 hr

0440

Dec 6
Clear seafloor
2.17
516.17
21.51
Quick reentry

1130

Dec 6
Bit at rotary table
6.83
523.00
21.79
Clean magnet. Bit 2: CC-7 SN BP-723

2130

Dec 6
Reentry 8
10.00
533.00
22.21
1-hr search for cone

0045

Dec 7
Work junk basket
3.25
536.25
22.34
Work junk basket before coring

0100

Dec 7
Begin coring bit 2
0.25
536.50
22.35
Clean hole!

0900

Dec 10
End coring
80.00
616.50
25.69
Hr = 49.58; cored = 129.9 m (158.0 m in basement)

1203

Dec 10
Work stuck pipe
3.05
619.55
25.81
Stuck when sinker bars pulled

1435

Dec 10
Clear seafloor
2.53
622.08
25.92

2040

Dec 10
Bit at rotary table
6.08
628.17
26.17
Bit 3: CC-7 SN BP-737

0410

Dec 11
Reentry 9
7.50
635.67
26.49

0845

Dec 11
Begin coring bit 3
4.58
640.25
26.68

2145

Dec 14
End coring
85.00
725.25
30.22
Hr = 62.9; cored = 88.0 m (244.0 m in basement)

2340

Dec 14
Clear seafloor
1.92
727.17
30.30

0655

Dec 15
Bit at rotary table
7.25
734.42
30.60
Bit 4: CC-9 SN BF-857, no junk basket

1435

Dec 15
Reentry 10
7.67
742.08
30.92
Quick reentry

1800

Dec 15
Begin coring bit 4
3.42
745.50
31.06

2200

Dec 18
End coring
76.00
821.50
34.23
Hr = 57.8; cored = 77.0 m (321.0 m in basement)

2355

Dec 18
Clear seafloor
1.92
823.42
34.31

0740

Dec 19
Bit at rotary table
7.75
831.17
34.63

1550

Dec 19
Reentry 11
8.17
839.33
34.97
Bit 5: CC-9 SN BF-738

1915

Dec 19
Begin coring bit 5
3.42
842.75
35.11
3 m soft fill

2000

Dec 22
End coring
72.75
915.50
38.15
Hr = 59.4; cored = 84.0 m (405.0 m basement)

0010

Dec 23
Clear seafloor
4.17
919.67
38.32

0625

Dec 23
Bit at rotary table
6.25
925.92
38.58
Bit 6: CC-9 SN BF-740

1540

Dec 23
Reentry 12
9.25
935.17
38.97
1 hr dt piperacker

1845

Dec 23
Begin coring Bit 6
3.08
938.25
39.09

1145

Dec 27
End coring
89.00
1027.25
42.80
Hr = 64.9; cored = 97.0 m (502.0 m basement)

1515

Dec 27
Clear seafloor
3.50
1030.75
42.95

2300

Dec 27
Bit at rotary table
7.75
1038.50
43.27

0622

Dec 28
Reentry 13
7.37
1045.87
43.58
Enter cone with logging BHA

0915

Dec 28
Rig-up for logging
2.88
1048.75
43.70
Recover VIT camera

1000

Dec 28
Rig-up first log
0.75
1049.50
43.73

1930

Dec 30
End logging
57.50
1107.00
46.13
BGR magnetometer (BGRM) did not work; two runs

2030

Dec 30
Rig-down from logging
1.00
1108.00
46.17
Triple combo, FMS, BGRM, UBI, WST

2100

Dec 30
Clear seafloor
0.50
1108.50
46.19

0325

Dec 31
Bit at rotary table
6.42
1114.92
46.45

0330

Dec 31
Underway to Balboa
0.08
1115.00
46.46
Beacon recovered after 45 days

Hole	Activity	Time (local)	Date (2002)	Operation on hole	Time on hole (hr)	Time on site (hr)	Time on site (days)	Comments
1256A	On location with GPS	1630	Nov 14					Spud at 0640 hr on 15 Nov
	Clear seafloor 1256A	0645	Nov 15		14.25	14.25	0.59	Objective attained
1256B	Clear seafloor 1256A	0645	Nov 15					Spud at 0815 hr on 15 Nov
	Bit at rotary table	0630	Nov 17		47.75	62.00	2.58	Basement reached
1256C	Bit at rotary table	0630	Nov 17					Spud at 1515 hr on 17 Nov
	EOP at rotary table	0345	Nov 23		141.25	203.25	8.47	Depth objective attained
1256D	EOP at rotary table	0345	Nov 23	Jet-in 20-in casing				Spud reentry cone and casing
		1035	Nov 24	End jetting	30.83	234.08	9.75	Reach 95 mbsf; release CADA
		2015	Nov 24	Bit at rotary table	9.67	243.75	10.16	Change to bi-reamer BHA
		0620	Nov 25	Reentry 1	10.08	253.83	10.58	Enter cone with bi-reamer BHA
		0815	Nov 25	Begin drilling	1.92	255.75	10.66	Start 21.5-in hole at 95 mbsf
		0445	Nov 27	End drilling	44.50	300.25	12.51	Stop at ~17 m into basement
		1300	Nov 27	Bit at rotary table	8.25	308.50	12.85	Failed bit bearing put junk in hole
		2140	Nov 27	Reentry 2	8.67	317.17	13.22	Reenter with 2X junk basket BHA
		0000	Nov 28	Start cleaning	2.33	319.50	13.31	Work junk baskets
		0330	Nov 28	End cleaning	3.50	323.00	13.46	Advance 1 m into basement
		0505	Nov 28	Clear seafloor	1.58	324.58	13.52	Recover drill string
		1140	Nov 28	Bit at rotary table	6.58	331.17	13.80	Change to bi-reamer BHA
		1755	Nov 28	Reentry 3	6.25	337.42	14.06	Enter cone with bi-reamer BHA
		2000	Nov 28	Begin drilling	2.08	339.50	14.15	Resume 21.5-in hole at ~17 m in basement
		0030	Nov 30	Begin wiper trip	28.50	368.00	15.33	TD hole at 276.1 mbsf (26.1 m in basement)
		0415	Nov 30	Displace hole	3.75	371.75	15.49	150 bbl sepiolite; 100 bbl barite
		0700	Nov 30	Clear seafloor	2.75	374.50	15.60	Recover drill string
		1330	Nov 30	Bit at rotary table	6.50	381.00	15.88	Rig-up for 16-in casing
		0417	Dec 1	Casing wet at 0417 hr	14.78	395.78	16.49	End making up casing
		1040	Dec 1	Detect crushed joint	6.38	402.17	16.76	Stop running casing
		0004	Dec 2	Recover casing	13.40	415.57	17.32	Replace four joints and casing collar
		1135	Dec 2	Casing wet at 1135 hr	11.52	427.08	17.80	End repair of casing string
		2008	Dec 2	Reentry 4	8.55	435.63	18.15	Weather getting bad; heave = ~2.5 m
		2315	Dec 2	Clear seafloor	3.12	438.75	18.28	POOH due to heave = ~4 m
		0650	Dec 3	Reentry 5	7.58	446.33	18.60	WOW for 5.75 hr
		1730	Dec 3	Land casing	10.67	457.00	19.04	Work stuck casing for 3.75 hr
		1745	Dec 3	Cement casing	0.25	457.25	19.05	30 bbl cement
		2115	Dec 3	Clear seafloor	3.50	460.75	19.20	Release CADA running tool
		0500	Dec 4	CADA tool on surface	7.75	468.50	19.52	Detorque CADA tool
		0630	Dec 4	Begin to run in hole	1.50	470.00	19.58	Make up bit 1: CC4 SN BX-020
		1500	Dec 4	Reentry 6	8.50	478.50	19.94	Quick reentry
		1815	Dec 4	Start to drill cement	3.25	481.75	20.07	Attempted core/dropped chisel
		0955	Dec 5	Clear seafloor	15.67	497.42	20.73	Tested bottom of hole and found junk
		1615	Dec 5	Bit at rotary table	6.33	503.75	20.99	Change to Bowen fishing magnet
		2358	Dec 5	Reentry 7	7.72	511.47	21.31	Quick reentry
		0230	Dec 6	Start fishing	2.53	514.00	21.42	Work junk baskets and magnet 1 hr
		0440	Dec 6	Clear seafloor	2.17	516.17	21.51	Quick reentry
		1130	Dec 6	Bit at rotary table	6.83	523.00	21.79	Clean magnet. Bit 2: CC-7 SN BP-723
		2130	Dec 6	Reentry 8	10.00	533.00	22.21	1-hr search for cone
		0045	Dec 7	Work junk basket	3.25	536.25	22.34	Work junk basket before coring
		0100	Dec 7	Begin coring bit 2	0.25	536.50	22.35	Clean hole!
		0900	Dec 10	End coring	80.00	616.50	25.69	Hr = 49.58; cored = 129.9 m (158.0 m in basement)
		1203	Dec 10	Work stuck pipe	3.05	619.55	25.81	Stuck when sinker bars pulled
		1435	Dec 10	Clear seafloor	2.53	622.08	25.92
		2040	Dec 10	Bit at rotary table	6.08	628.17	26.17	Bit 3: CC-7 SN BP-737
		0410	Dec 11	Reentry 9	7.50	635.67	26.49
		0845	Dec 11	Begin coring bit 3	4.58	640.25	26.68
		2145	Dec 14	End coring	85.00	725.25	30.22	Hr = 62.9; cored = 88.0 m (244.0 m in basement)
		2340	Dec 14	Clear seafloor	1.92	727.17	30.30
		0655	Dec 15	Bit at rotary table	7.25	734.42	30.60	Bit 4: CC-9 SN BF-857, no junk basket
		1435	Dec 15	Reentry 10	7.67	742.08	30.92	Quick reentry
		1800	Dec 15	Begin coring bit 4	3.42	745.50	31.06
		2200	Dec 18	End coring	76.00	821.50	34.23	Hr = 57.8; cored = 77.0 m (321.0 m in basement)
		2355	Dec 18	Clear seafloor	1.92	823.42	34.31
		0740	Dec 19	Bit at rotary table	7.75	831.17	34.63
		1550	Dec 19	Reentry 11	8.17	839.33	34.97	Bit 5: CC-9 SN BF-738
		1915	Dec 19	Begin coring bit 5	3.42	842.75	35.11	3 m soft fill
		2000	Dec 22	End coring	72.75	915.50	38.15	Hr = 59.4; cored = 84.0 m (405.0 m basement)
		0010	Dec 23	Clear seafloor	4.17	919.67	38.32
		0625	Dec 23	Bit at rotary table	6.25	925.92	38.58	Bit 6: CC-9 SN BF-740
		1540	Dec 23	Reentry 12	9.25	935.17	38.97	1 hr dt piperacker
		1845	Dec 23	Begin coring Bit 6	3.08	938.25	39.09
		1145	Dec 27	End coring	89.00	1027.25	42.80	Hr = 64.9; cored = 97.0 m (502.0 m basement)
		1515	Dec 27	Clear seafloor	3.50	1030.75	42.95
		2300	Dec 27	Bit at rotary table	7.75	1038.50	43.27
		0622	Dec 28	Reentry 13	7.37	1045.87	43.58	Enter cone with logging BHA
		0915	Dec 28	Rig-up for logging	2.88	1048.75	43.70	Recover VIT camera
		1000	Dec 28	Rig-up first log	0.75	1049.50	43.73
		1930	Dec 30	End logging	57.50	1107.00	46.13	BGR magnetometer (BGRM) did not work; two runs
		2030	Dec 30	Rig-down from logging	1.00	1108.00	46.17	Triple combo, FMS, BGRM, UBI, WST
		2100	Dec 30	Clear seafloor	0.50	1108.50	46.19
		0325	Dec 31	Bit at rotary table	6.42	1114.92	46.45
		0330	Dec 31	Underway to Balboa	0.08	1115.00	46.46	Beacon recovered after 45 days

Notes: GPS = Global Positioning System. EOP = end of pipe. BHA = bottom-hole assembly. TD = total depth. POOH = pull out of hole. WOW = waiting on weather. VIT = vibration isolated television. FMS = Formation MicroScanner, UBI = ultrasonic borehole imager, WST = well seismic tool.

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