|
|
Depth
(mbrf) |
Depth
(mbsf) |
Depth
(msb) |
Comments
|
|
Hole SR-2A (deep) |
|
|
|
|
|
Seafloor depth
|
2670.0
|
0.0
|
–255.0
|
Approximate |
|
Basement depth
|
2925.0
|
255.0
|
0.0
|
|
|
20 inch hole
|
2935.0
|
265.0
|
10.0
|
Underream |
|
18-1/2 inch hole
|
2940.0
|
270.0
|
15.0
|
Bicenter |
|
14-3/4 inch hole
|
3025.0
|
355.0
|
100.0
|
Tricone |
|
9-7/8 inch hole/coring
|
3185.0
|
515.0
|
260.0
|
Cored interval ~100–260 msb |
|
20 inch casing shoe
|
2710.0
|
40.0
|
–215.0
|
Jet in |
|
16 inch casing shoe
|
2935.0
|
265.0
|
10.0
|
Cement across sediment/basement interface |
|
10-3/4 inch casing shoe
|
3015.0
|
345.0
|
90.0
|
Casing seal at top, run without cement retainer |
|
4-1/2 inch casing end
|
3165.0
|
495.0
|
240.0
|
|
|
Upper DS packer seat
|
3005.0
|
335.0
|
80.0
|
Packer set in casing for short-term test |
|
Lower DS packer seat
|
3165.0
|
495.0
|
240.0
|
Packer set in to-gauge open hole |
|
Upper CORK packer seat
|
3005.0
|
335.0
|
80.0
|
Packer set in casing, defines upper limit to monitoring |
|
Lower CORK packer seat
|
3165.0
|
495.0
|
240.0
|
Packer set in to-gauge open hole, defines upper limit of lower interval |
|
Hole SR-2B (shallow) |
|
|
|
|
|
Seafloor depth
|
2670.0
|
0.0
|
–255.0
|
Approximate |
|
Basement depth
|
2925.0
|
255.0
|
0.0
|
|
|
20 inch hole
|
2935.0
|
265.0
|
10.0
|
Underream |
|
18-1/2 inch hole
|
2940.0
|
270.0
|
15.0
|
Bicenter |
|
14-3/4 inch hole
|
2955.0
|
285.0
|
30.0
|
Tricone |
|
9-7/8 inch hole (no coring)
|
2995.0
|
325.0
|
70.0
|
Drilled interval ~30–70 msb (no coring) |
|
20 inch casing shoe
|
2710.0
|
40.0
|
–215.0
|
Jet in |
|
16 inch casing shoe
|
2935.0
|
265.0
|
10.0
|
Cement across sediment/basement interface |
|
10-3/4 inch casing shoe
|
2945.0
|
275.0
|
20.0
|
Casing seal at top, run without cement retainer |
|
4-1/2 inch casing end
|
2975.0
|
305.0
|
50.0
|
|
|
Casing running tool
|
2670.0
|
0.0
|
–255.0
|
Use casing running tool for 24 h pumping experiment |
|
CORK packer seat
|
2935.0
|
265.0
|
10.0
|
Packer set in casing, defines upper limit to monitoring |
|
Hole 1027C |
|
|
|
|
|
Seafloor depth
|
2667.0
|
0.0
|
–613.7
|
Approximate |
|
Basement depth
|
3280.7
|
613.7
|
0.0
|
|
|
TD, Leg 168
|
3299.7
|
632.7
|
19.0
|
|
|
Top sill
|
3242.5
|
575.5
|
–38.2
|
Drillers records, Leg 168 |
|
Bottom sill
|
3257.7
|
590.7
|
–23.0
|
Drillers records, Leg 168 |
|
14-3/4 inch hole
|
3252.1
|
585.1
|
–28.6
|
Into sill, not true basement |
|
9-7/8 inch hole (RCB)
|
3299.7
|
632.7
|
19.0
|
Leg 168 |
|
9-7/8 inch hole (RCB)
|
3339.7
|
672.7
|
59.0
|
IODP Juan de Fuca 2010 goal for open hole |
|
16 inch casing shoe
|
2704.6
|
37.6
|
–576.1
|
Jet in |
|
10-3/4 inch casing shoe
|
3245.7
|
578.7
|
–35.0
|
Casing set in sill above true basement |
|
4-1/2 inch casing end
|
3330.7
|
663.7
|
50.0
|
|
|
Upper DS packer seat
|
3235.7
|
568.7
|
–45.0
|
Packer set in casing for short-term test |
|
Lower DS packer seat
|
3287.0
|
620.0
|
6.3
|
Packer set in uppermost true basement |
|
Upper CORK packer seat
|
3257.0
|
590.0
|
–23.7
|
Packer set in sill, defines upper limit to monitoring |
|
Lower CORK packer seat
|
3287.0
|
620.0
|
6.3
|
Packer set in true basement, defines upper limit of lower interval |