The movement of plunger piston,the compressibility of the liquid and the leakage in the clearance between the plunger piston and pump barrel were comprehensively considered,and a new continuous flow equation of the fluid in the pump cylinder was setup.
综合考虑柱塞的运动规律、泵筒内流体的可压缩性、柱塞与泵筒之间的间隙漏失量,建立了泵筒内流体流动的连续流方程。
By the analysis of the situation of sealant rubber ring application to the worksites of Xiaowa Oilfield, the main reasons re- sulting in the frequent leakage of sealant rubber rings are found out, thus providing the reference for the spot management of the same oilfields with viscous crude.
针对小洼油田生产现场的密封胶圈使用情况进行分析,找出了造成密封胶圈频繁漏失的主要原因,为同类稠油油田现场管理提供参考。
The Block Su-25 in Changqing Oilfield has heaving formations into which mud losses frequently take place and from which water production is high.
针对长庆地区苏25断块地层易塌、易漏、大量出水、目的层低压异常、漏失严重等复杂情况,采用正注反挤的固井方法与适宜的水泥浆技术(分段封固、梯度凝结),防漏失、防失重,压稳气层;在有效减少井底液柱压力防漏的基础上,使用不同堵漏材料,复合堵漏,防漏与堵漏结合,彻底控制住漏失;在调整水泥浆密度、抑制地层出水的基础上,改善水泥石内部结构,增加地层出水阻力,防洛河水腐蚀。
Leak resisting toughening agent F27A solves lost circulation in fractured formation.;
使用防漏增韧剂F27A解决裂缝性地层漏失问题
In Qianfoya Group and Xujiahe Group, there are very low formation fracture pressure layers or faults existed, which leads to lost circulation during drilling and cementing operations.
川东地区平均井深在6000m以上,地质构造复杂,压力层系多,特别是千佛崖组、须家河组地层破裂压力低,存在低压易漏、甚至裂缝性的漏失层,在钻井及固井施工时极易发生漏失,固井质量难以保证。
Inverse transient analysis-based numerical simulation of leakage in water distribution systems;
基于瞬变反问题分析的给水管网漏失数值模拟
Judging leakage in well testing string has become a noticeable problem.
地层测试管柱中的漏失判别已成为不容忽视的问题。