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Table T5. Casing depths, drilling depths, and significant events, Expedition 348.

Event Time
(h UTC)
Date Measured
depth BRT
(m)
Measured
depth
(mbsf)
True vertical
depth
(mbsf)
Remarks
Sea level     1967.50 0.00 0.00  
36 inch casing     2021.40 53.90 53.90  
20 inch casing     2827.80 860.30 860.30  
Lithologic Unit I/II boundary     2167.50 200.00 200.00  
Lithologic Unit II/III boundary     2843.00 875.50 875.50  
Lithologic Unit III/IV boundary     2943.00 975.50 975.50  
Lithologic Unit IV/V boundary     3633.00 1665.50 1664.40  
TD Hole C0002F     3973.00 2005.50 2005.50  
Hole C0002F side track 0815 4 Nov 2013 2845.00 877.50 877.50  
Hole C0002N 0815 4 Nov 2013 2827.80 860.30 860.30  
Borehole conditioning (top) 1030 6 Nov 2013 2805.90 838.40 838.40 *1205–1221 mbsf; ~15 h
Borehole conditioning (bottom) 2245 5 Nov 2013 3186.50 1219.00 1217.90 *1205–1221 mbsf; ~15 h
WOW #1 2115 7 Nov 2013 3645.00 1677.50 1676.40 POOH to 1939.8 m BRT
WOW #1 2200 8 Nov 2013 3645.00 1677.50 1676.40 *1662–1678 mbsf; ~28.5 h
Lost signal 0815 9 Nov 2013 3823.80 1856.30 1855.20  
WOW #2 0000 10 Nov 2013 3976.00 2008.50 2007.40 POOH to surface
WOW #2 2215 11 Nov 2013 3976.00 2008.50 2007.40 *1992–2008 mbsf; ~50 h
Mud loss #1 2345 11 Nov 2013 4004.00 2036.50 2035.40 *2022–2038 mbsf; ~8.5 h
Mud loss #1 0000 12 Nov 2013 3995.50 2028.00 2026.90 *2022–2038 mbsf; ~8.5 h
Mud loss #2 1100 12 Nov 2013 4085.00 2117.50 2116.40  
Hole C0002N TD 0115 13 Nov 2013 4297.50 2330.00 2328.90 859.5–2329.3 (1962.6–2008.5 overlap zone) mbsf; logged interval
Hole C0002N 13-3/8 inch casing 0645 22 Nov 2013 3977.50 2010.00 2008.90 2013 m total length
13-3/8 inch casing TOC     3320.00 1352.50 1351.41  
Bridge plug 1745 7 Dec 2013 3916.50 1949.00 1947.90  
Top of DC fish     3928.08 1960.58 1959.50  
Window top     3904.00 1936.50 1935.40  
Window bottom     3912.63 1945.13 1944.00  
Hole C0002P sidetrack top 0000 15 Dec 2013 3904.00 1936.50 1935.40  
LOT #1 0630 15 Dec 2013 3922.00 1954.50 1953.40 1130 psi (7.79 MPa)
LOT #2 0700 15 Dec 2013 3922.00 1954.50 1953.40 1280 psi (8.83 MPa)
WOW #3   18–20, Dec 2013 4035.20 2067.70 2066.50  
Bottom of kickoff 1400 20 Dec 2013 4075.00 2107.50 2106.30  
Core prep   20–22 Dec 2013 4130.50 2163.00 2161.70  
Top RCB coring 2045 22 Dec 2013 4130.50 2163.00 2161.70  
Fault zone     4172.50 2205.00   Zone width: 2204.9–2205.8 mbsf
Bottom of RCB coring 1745 24 Dec 2013 4186.00 2218.50 2216.60  
Open hole (top) 1200 27 Dec 2013 4130.00 2162.50 2161.20 *2163–2218.5 mbsf; >66.25 h
Open hole (bottom) 1800 27 Dec 2013 4186.00 2218.50 2217.10 *2163–2218.5 mbsf; >66.25 h
TD 12-1/4 inch LWD 0700 1 Jan 2014 5026.00 3058.50 3056.60 2163.5–3058.5 mbsf; logged interval
Top of open hole 14-1/2 inch 2230 2 Jan 2014 3928.00 1960.50 1959.40  
Stuck pipe 1340 11 Jan 2014 4928.00 2960.50 2959.50 2960.5 mbsf; ~1.75 h
Stuck pipe 0400 14 Jan 2014 4932.00 2964.50 2963.50 2964.5 mbsf; ~17 h; pressure stabilized at 15.2 MPa
Hole C0002P 11-3/4 inch casing shoe 0630 18 Jan 2014 4890.00 2922.50 2920.65 1007.18 m total length
LOT #3 1945 19 Jan 2014       After diverter, before CRT; 650 psi (4.48 MPa) and 530 psi (3.65 MPa)
TD 14-1/2 inch hole     4927.50 2960.00 2958.14  

* = depth intervals with long exposure time before logging-while-drilling tools were able to log after initial drilling. TD = total depth, WOW = waiting on weather, TOC = top of casing/cement, DC = drill collar, LOT = leak-off test, RCB = rotary core barrel, LWD = logging while drilling, POOH = pull out of hole, CRT =casing running tool.

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