outer tubing string 外油管柱
high-angle tubing string 大斜度井油管柱
heat insulated tubing string 隔热管柱
parallel tubing string 平行油管柱
The casing and tubing string are filled with a working fluid.
套管和管柱充满工作液。
It can be extensively applied to tubing string for oil production technology.
可广泛应用于油水井增产增注工艺管柱上。
Special packers are used for sealing between the multi -plunger and tubing string.
多节柱塞一油管副间的密封能力由特殊结构的柱塞密封元件——封隔器保证。
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