简答题 翻译：The separation between the various reservoirs is demonstrated in each case by different oil/water and gas/oil contacts in most reservoirs.

翻译：Traps of this type were formed after the deposition ...

问答题翻译：Traps of this type were formed after the deposition of the reservoir rock by erosion and/or alteration of a portion of the reservoir rock through solution or chemical replacement.

翻译：The casing and tubing used to bring crude oil to the...

问答题翻译：The casing and tubing used to bring crude oil to the surface is suspended underneath a wellhead or Christmas tree.

翻译：Other instruments used in gravity work are the torsi...

问答题翻译：Other instruments used in gravity work are the torsion balance and the pendulum.These instruments, however, have been practically replaced by the gravimeter.