The sand control of oil wellpump is very important for drilling-production system.
抽油泵防砂是钻采系统防砂的一个重要环节。
2
A new double action oil wellpump, which has been progressed field experiment, is discussed on its structure, principle and characteristics here.
对一种新型双作用抽油泵的结构、工作原理、技术特点进行了研制并进行了现场试验。
3
It is indicated that the precise flat Plate, hollow column and clock gauge should be selected properly to satisfy actual requirements for measuring accuracy of oil wellpump liners.