海洋油田水平井胶囊破胶液技术  

Laboratory study on microcapsulated gel breaker fluid for horizontal wells in offshore oilfields

作　　者：岳前升[1] 刘书杰 何保生 李玉光 胡友林[1] 

机构地区：[1]长江大学化学与环境工程学院,湖北荆州434023 [2]中海石油研究中心,北京100027

出　　处：《大庆石油学院学报》2010年第4期85-88,共4页Journal of Daqing Petroleum Institute

基　　金：国家油气重大专项(2008ZX05056-002-03-04)

摘　　要：针对海洋油田水平井破胶液破胶速度快且不宜控制,使用胶囊延迟破胶技术,优选胶囊破胶剂JNJ-2.实验结果表明：胶囊破胶剂JNJ-2具有较好的延迟破胶特性,能够将海上油田水平井破胶时间由1~2 h提高至8~9 h,压力对其释放速度影响不大,破胶剂完全释放后能有效解除聚合物堵塞造成的储层损害,对海洋油田水平井钻井液及其滤饼具有良好解除效果;胶囊延迟破胶技术能够减少海洋完井作业程序,降低完井漏失风险,具有广阔应用前景.In view of the problem of gel breakers used in horizontal wells in offshore oilfields,the technique of micelle delayed gel breaking is proposed.A micelle gel breaker JNJ-2 is chosen.The experimental results show that JNJ-2 has better characteristics of delayed gel breaking and an excellent effect of offshore horizontal well drilling and for removing filter cakes.Its corrosion resisting experiment has also demonstrated that it has an obvious effect of delayed gel removal.The technique can be used to reduce the procedures of offshore well drillings and risk of completion fluid leakage,it has wide application prospects.

关 键 词：胶囊破胶剂 延迟破胶 储层保护 裸眼完井 完井液 水平井 

分 类 号：TE254.6[石油与天然气工程—油气井工程]