|
Location
|
Depth
|
Comments
|
|
mbrf
|
mbsf
|
msb
|
|
Seafloor depth
|
2672.0 |
0.0 |
–236.0 |
|
|
Basement depth
|
2908.0 |
236.0 |
0.0 |
Hard drilling, basalt chips recovered |
|
21-1/2 inch hole
|
2908.0 |
235.7 |
0.0 |
Underreamer stopped at top of basement |
|
18-1/2 inch hole
|
2914.0 |
242.0 |
6.0 |
Pilot bit below underreamer |
|
14-3/4 inch hole
|
3018.0 |
346.0 |
110.0 |
Tricone bit |
|
9-7/8 inch hole
|
3200.0 |
528.0 |
292.0 |
Tricone bits (coring, drilling) |
|
20 inch casing shoe
|
2725.0 |
53.0 |
–183.0 |
|
|
16 inch casing shoe
|
2902.0 |
230.0 |
–6.0 |
|
|
10-3/4 inch casing shoe
|
2980.5 |
308.5 |
72.5 |
Shortened casing after initial attempt |
|
CORK BHA (4-1/2 inch casing)
|
3141.7 |
469.7 |
233.7 |
End of bullnose below perforated collars |
|
Base of cement below 10-3/4 inch casing
|
2981.0 |
309.0 |
73.0 |
Broke through when drilling out cement |
|
Fill tagged in base of hole
|
3191.0 |
519.0 |
283.0 |
Just before packer experiments |
|
Upper CORK packer seat top
|
2969.5 |
297.5 |
61.5 |
Element top, shallow swellable packer set |
|
Upper CORK packer seat base
|
2979.3 |
307.3 |
71.3 |
Element base, shallow inflatable packer |
|
Lower CORK packer seat top
|
3091.3 |
419.3 |
183.3 |
Element top, deep swellable packer set |
|
Lower CORK packer seat base
|
3101.2 |
429.2 |
193.2 |
Element base, deep inflatable packer |