不动管柱降压解堵排酸技术
Plug Removing and Acid Backflowing through Pressure Drop without Changing Pipe String
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摘要: 针对注水井近井地带地层堵塞和酸化井排酸困难等问题,利用喷射原理研究了降压解堵排酸技术。文中介绍了该技术的工艺原理、工作参数的确定、工艺特点和现场应用等情况。经过现场应用证明,降压解堵排酸技术确实能有效地排出地层中的残余酸、酸反应物以及各种堵塞杂质,减少地层污染。Abstract: Plug removing and acid backflowing technology through pressure drop is developed based on jet principles to solve the problems of formation plugging near wellbore zone ahd acid backflowing. The technological pricinples, selection of papameterstechnological characteristics and field application are discussed in this paper. Field data show that it can effctively drain off the residual acid,reaction products of acid and various foreign substances and lessen formation contamination.