井下的赌注 Aceinb the Hole
下井仪的间隙 tool standoff
井下经年冒烟的火 standing fire
炸碎井下落鱼的炸药包 junk shot
已定井网下的扫油路线 sweep out pattern
地面控制的井下阀 downhole surface-operated valve
地面推算的井下温度 SHT
地面控制的井下安全阀 SCSSV
井下定位的研究现状 Underground Positioning Status
当井和一个水池相接时，油通常会从井里上升，因为它与井下的水的密度不同，或者因为停留在它上方的膨胀气体的压力。
When the well reaches a pool, oil usually rises up the well because of its density difference with water beneath it or because of the pressure of expanding gas trapped above it.
智利救援人员正准备将33名从8月5日就被困井下的矿工拖出地面。
Chilean rescue workers are preparing to extract the 33 miners who have been trapped underground since Aug. 5.
在BP的例子里，井下的石油承受着很大压力，因此它非常想从井洞里逃出来。
In the BP example, the oil in the well is under pressure, and so it wants to emerge from the hole that created the well.
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