Table T4. Bottom-hole assemblies (BHAs) used during Expedition 348.
| Hole | Drilling type | Water depth (mbsl) | Top hole depth (mbsf) | Top hole depth (mBRT) |
TD (mbsf) |
TD (mBRT) |
Bit size (inch) |
BHA |
|---|---|---|---|---|---|---|---|---|
| C000M | SD-RCB | 1937.5 | 0.0 | 1967.5 | 512.5 | 2480.0 | 8-1/2 |
Bit × near-bit sub (w/float and inner tube stabilizer) × DC sub (w/landing ring) × landing sub × head sub (w/ latch sleeve) × 7 inch coring DC (11) × XO × 5.68 inch HWDP (12) × XO × 5 inch DP S-140 (21 stands) × 5-1/2 inch DP S-140 (21 stands) × XO × 5-1/2 inch DP S-150 |
| C000F | LWD/MWD | 1939.0 | 0.0 | 1967.5 | 2005.5 | 3973.0 | 12-1/4 | Bit × GVR × ARC8 × TeleScope × 12-1/8 inch ILS × sonicVISION × 12-1/8 inch stab × 8-1/2 inch DC (1) × CST × Anderreamer × F/S × 9-1/2 inch DC (2) × 17 inch stab × 9-1/2 inch DC (1) × XO × 8-1/2 inch DC (3) × 7-3/4 inch Jar × 8-1/2 inch DC (3) × XO × 5.68 inch HWDP (12) × XO × 5 inch DP S-140 (46 stands) × 5-1/2 inch DP S-150 |
| C000N | Sidetrack | 1939.0 | 860.0 | 2827.5 | 2330.0 | 4297.5 | 17 |
Bit × sleeve stab × Geopilot9600 w/near-bit stab × flex collar × 16-7/8 inch ILS × 8 inch DGR × 8 inch EWR × 8 inch PWD × 8 inch HCIM × HOC × MWD down screen × float sub (w/float) × 8-1/2 inch DC (12) × 8 inch hydraulic Jar × 8-1/2 inch DC (2) × XO × 5.68 inch HWDP (12) × XO × 5 inch DP S-140 (53 stands) × XO × 5-1/2 inch DP S-150 |
| C000N | Casing run | 1939.0 | NA | NA | 2009.0 | 3976.5 | NA | 13-3/8 inch casing PADPRT × XO × 5-1/2 inch DP S-150 (6 m) × XO × XO × 5-7/8 inch DP NK-155 (3) × 5-7/8 inch DP NK-155 (18 stands) × XO × 6-5/8 inch DP UD-165 (1 stand) × 6-5/8 inch DP (6 m) × 6-5/8 inch DP (31 stands) × CMT stand |
| C000N | Fishing | 1939.0 | NA | NA | 1886.4 | 3853.9 | NA | Screw-in sub (5¾ inch DSTJ pin) × XO × 5.68 inch HWDP (2) × XO × drilling jar × 8-1/2 inch DC (2) × XO × 5.68 inch HWDP (12) × 5-1/2 inch DP S-150 (21 stands) × XO × XO × 5-7/8 inch DP NK-155 (19 stands) × XO × 6-5/8 inch DP Z-140 (25 stands) × XO × 6-5/8 inch DP UD-165 |
| C000N | WBRRT | 1939.0 | NA | NA | NA | NA | NA | Jetting sub × XO × 5-1/2 inch DP S-140 (1stand) × XO × 8-1/2 inch DC (1) × 12-1/4 inch stab × 8-1/2 inch DC (5) × XO × 5-1/2 inch DP S-140 (1 stand) × XO × WBRRT × XO × 5-1/2 inch DP pup (6 m) × 5 inch DP S-140 (44 stands) × 6-5/8 inch DP Z-140 |
| C000P | Window milling | 1939.0 | 1935.5 | 3903.0 | 1954.5 | 3922.0 | 12-1/4 | Lead mill × 8-1/2 inch DC (1) × 12-1/4 inch stab × secondary mill × flex mandrel × steering mill × 8-1/2 inch DC (9) × XO × 8-1/2 inch coring DC (12) × XO × 5.68 inch HWDP (12) × XO × 5 inch DP S-140 (26 stands) × 5-1/2 inch DP S-140 (21 stands) × XO × 5-1/2 inch DP S-150 (25 stands) × XO × 6-5/8 inch DP Z-140 |
| C000P | Kick-off | 1939.0 | 1936.5 | 3904.0 | 2162.5 | 4130.0 | 12-1/4 | Bit × motor × 12 inch stab × HOC × DH screen × float sub (w/float) × 8-1/2 inch DC (12) × drilling jar × 8-1/2 inch DC (2) × XO × 5.68 inch HWDP (12) × XO × 5 inch DP S-140 (44 stands) × 5-1/2 inch DP S-140 (21 stands) × XO × 5-1/2 inch DP S-150 (25 stands) × XO × 6-5/8 inch DP Z-140 |
| C000P | RCB | 1939.0 | 2162.5 | 4130.0 | 2118.0 | 4085.5 | 10-5/8 |
Bit × bit sub w/stab × RCB core barrel × top sub × head sub × 10-5/8 inch stab × 8-1/2- inch coring DC (12) × coring jar × 8-1/2 inch coring DC (3) × XO × 5.68 inch HWDP(12) × XO × 5 inch DP S-140 (44 stands) × 5-1/2 inch DP S-140 (21 stands) × 5-1/2 inch DP S-150 (25 stands) × XO × 6-5/8 inch DP Z-140 |
| C000P | LWD/MWD | 1939.0 | 2100.0 | 4067.5 | 3058.5 | 5026.0 | 12-1/4 | Bit × PDM × float sub (non-ported) × 12-1/4 inch stab × AFR × M5 (AGR + EWR + PWD + HCIM) × X-BAT × HOC × 8-1/2 inch DC (12) × drilling jar × XO × 5.68 inch HWDP (12) × XO × 5 inch DP S-140 (65 stands) × 5-1/2 inch DP S-140 (21stands) × XO × 5-1/2 inch DP S-150 (15 stands) × XO × 6-5/8 inch DP Z-140 |
| C000P | Underreamer | 1939.0 | 1936.5 | 3904.0 | 2960.5 | 4928.0 | 12-1/4, 14-1/2 | Bit × bit sub × 14-1/2 inch Anderreamer × float sub (w/flapper-type float) × 8-1/2 inch DC (1) × 12-3/16 inch × 8-1/2 inch DC (11) × drilling jar × XO × 5.68 inch HWDP (12) × XO × 5 inch DP S-140 (67 stands) × 5-1/2 inch DP S-140 (21 stands) × XO × 5-1/2 inch DP S-150 (8 stands) × XO × 6-5/8 inch DP X-140 |
| C000P | Underreamer | 1939.0 | 1936.5 | 3904.0 | 2960.5 | 4928.0 | 12-1/4, 14-1/2 | Bit × bit sub × 14-1/2 inch Anderreamer × float sub (w/flapper-type float) × 8-1/2 inch DC (1) × 12-3/16 inch stab × 8-1/2 inch DC (11) × drilling jar × 8-1/2 inch DC (2) × XO × 5.68 inch HWDP (12) × XO × 5 inch DP S-140 (67 stands) × 5-1/2 inch DP S-140 (21 stands) × XO × 5-1/2 inch DP S-150 (25 stands) × XO × 6-5/8 inch DP Z-140 |
| C000P | Underreamer | 1939.0 | 1936.5 | 3904.0 | 2964.5 | 4932.0 | 12-1/4, 14-1/2 | Bit × bit sub × 14-1/2 inch Anderreamer × float sub (w/flapper-type float) × 8-1/2 inch DC (1) × 12-3/16 inch stab × 8-1/2 inch DC (11) × drilling jar × 8-1/2 inch DC (2) × XO × 5.68 inch HWDP (12) × XO × 5 inch DP S-140 (67 stands) × 5-1/2 inch DP S-140 (21 stands) × XO × 5-1/2 inch DP S-150 (13 stands) × XO × 6-5/8 inch DP Z-140 |
| C000P | Casing run | 1939.0 | NA | NA | 2922.0 | 4889.5 | NA | 11¾ inch casing (G/S × 1 × F/C × 9 × L/C × 30 × 41, total 82 joints) × liner hanger × 5 inch DP (5 stands) × 5-1/2 inch DP S-140 (21 stands) × XO × 5-1/2 inch DP S-150 (25 stands) × XO × XO × 5-7/8 inch DP NK-155 (19 stands) |
NA = not applicable. SD-RCB = small-diameter rotary core barrel system, LWD/MWD = logging while drilling/measurement while drilling, WBRRT = wear bushing running/retrieving tool. Stab = stabilizer, DC = drill collar, XO = cross-over sub, HWDP = heavy-wall drill pipe, DP = drill pipe, CST = concentric string tool, DGR = dual gamma ray tool, EWR = electromagnetic wave resistivity tool, PADPRT = pressure-assisted drill pipe running tool, CMT = drill stand, PDM = positive-displacement motor. GVR = geoVISION resistivity tool, ARC8 = arcVISION array resistivity compensated tool, AFR = azimuthal focused resistivity tool, AGR = azimuthal gamma ray tool, DGR = dual gamma ray tool, EWR = electromagnetic wave resistivity tool, PWD = pressure while drilling tool, X-BAT = azimuthal sonic/ultrasonic tool.
Previous | Close | Next | Top of page