A、on bottom with the full drill string in tension
B、one stand (approximately 93 feet) off bottom
C、no deeper than the shoe of the last casing set
D、as close to the surface as possible
更多“When hanging off drill pipe in emergency situations aboard a ship，the preferred location of the drill bit is（）.”相关的问题
A、to right the raft if it capsizes B、to carry the raft around on deck C、for crewmen to hang on to D、to hang the raft for drying
A、to right the raft if it capsizes B、to carry the raft around on deck C、for crewmen to hang on to D、to hang the raft for drying
A、to right the raft if it capsizes B、to carry the raft around on deck C、for crewmen to hang on to D、to hang the raft for drying
A、A.Twice the dry bulb temperature B、B.10℃ above the dry bulb temperature C、C.5℃ above the dry bulb temperature D、D.Equal to the dry bulb temperature
A、over the top of the flames B、off a bulkhead into the fire C、in front of the fire D、at the base of the fire
A、aimed at the source of the flames B、fogged above the equipment C、shot off a flat surface onto the flames D、used to shield against electrical shock
A、12 months since last dry-docking B、18 months since last dry-docking C、24 months since last dry-docking D、36 months since last dry-docking
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