简答题 翻译：The permeability of a porous medium may be determined from samples extracted from the formation or by in-place testing.

问答题翻译：An oil field may have several hundred wells with flow lines that carry crude oil from the wells to the lease tanks.

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

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.

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.

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.