These ultra-deep deposits must be drilled at up to three times the normal pressure for offshore oil.
开采这些超深的油矿沉积层所需的钻探压力是开采海上石油正常压力的三倍。
Crude oil that has a greater shrinkage with pressure reduction than normal crude oil.
在压力降低的情况下收缩率高于正常原油收缩率的原油。
It is not needed to punch the tubing when this sensor is used to measure the internal pressure, which guarantees the oil string with higher mechanical strength and keeps Wells in normal production.
由于该传感器不需要在油管柱上打孔取压，从而保证了油管柱有较高的机械强度，在测量时不影响油气井的正常生产。
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