plugging a well 中文意思是什麼
plugging a well
解釋
封井-
Abstract : factors causing the failure of the rod string in a screw pump well include rod with minor od being used , defects in the rod body produced in manufacturing and service , excessive torque caused by plugging and reactive torque on the rod string , and excessive shearing stress on the rod thread
文摘:造成螺桿泵採油井抽油桿桿柱斷裂、脫扣和擼扣的主要原因有桿體外徑選擇偏小,桿體製造或使用過程中產生缺陷,堵塞扭矩過大,反扭矩大於螺紋聯接扭矩以及抽油桿螺紋牙受剪應力過大等。
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