而随着油田的不断开采，低产井越来越多，油井空抽现象越来越严重。
With the constant exploitation of the oil fields, low-yielding well is increasing.
在抽油井的抽油过程中和关井期间测量环空内液面高度的一种声波测井方法。
A sonic tool used in a pumping well to determine the distance to the top of the fluid in an annulus during pumping and shut in.
在抽油井的抽油过程中和关井期间测量环空内液面高度的一种声波测井方法。
A sonic tool used in a pumping well to determine the distance to the top of the fluid in an annulus during pumping and shut in.
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