探矿工程-岩土钻掘工程2016，Vol.43Issue(2)：53-56,4.
东胜气田刘家沟组井漏与堵漏措施分析
Analysis on Plugging Measures for Leakage in Liujiagou Formation of Dongsheng Gas Field
孙庆春1
作者信息
- 1. 西安石油大学石油工程学院,陕西西安710065;中石化华北石油工程有限公司五普钻井分公司,河南 新乡437000
- 折叠
摘要
Abstract
Dongsheng gas field stepped into the development period in 2013.Along with gradual increase of horizontal well construction, lost circulation accidents occur frequently, single well plugging time in drilling cycle was roughly 8%~50%, which greatly restricted the drilling efficiency.The main leakage zone was in Liujiagou formation, the permeability loss hap-pened when drilling fluid density was low with 3~5m3/h leakage velocity and crack leakage occurred when drilling fluid density was high with 20m3/h leakage velocity until annular return lost.The cracks would expand with the increase of the borehole liquid column pressure, which would cause repeated lost circulation.By the analysis on the leakage characteristics in J58P13H and plugging effect, the adaptability of the composite plugging method, plugging materials for large crack ex-pansion and expansion pipe plugging method in fractured leakage plugging were explored in order to promote these methods in Dongsheng gas field.关键词
井漏/稠浆堵漏/桥塞堵漏/化学固结堵漏/东胜气田Key words
lost circulation/dense slurry/bridging plug/chemical consolidation plugging/Dongsheng gas field分类
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孙庆春..东胜气田刘家沟组井漏与堵漏措施分析[J].探矿工程-岩土钻掘工程,2016,43(2):53-56,4.
