可变形微泡油层保护液在官23-46井的应用.pdfVIP

断块油气田 FAULT-BLOCK OIL GAS FIELD 2012 年 11 月 第 19 卷增刊 1 doi: 1O.6056/dkyqt2012z1027 可变形微泡油层保护液在官 23-46 井的应用 董军，樊松林，韩芳，周小平，辉建超，李瑞 (中国石油大港油田公司石油工程研究院，天津 3(0280) 摘 要 官 23-46 井位于大港油田采油三r .JL 店潜山构造带，是一口电泵井，该井压力系数约为 0.71 ，属于低压漏失井， 3 清水进行;中砂作业全部漏失。为了降低成本，使用由新型发泡剂、活性剂、复合稳泡剂等处理剂 2012 年 4 月该井使用 80m 配制而成的新型可交形微泡油层保护液与无面相体系，并结合段塞法迸行作业。该微泡体系具有较高的稳定性(比一般泡 沫稳定) ，结构复杂，过渡层明显，有一定抗压性，能够受挤压变形，是一种针对低压漏失井研制的新型修井液体系。作业顺 利完成，施工成本降低 20% ，而且作业后 2d 恢复产量，油层保护效果显著。 关键词 可变形微泡沫;油层保护;低密度;段塞法 中图分类号:TE358 文献标志码:A Application of deformable microfoam completion fluid in Well Guan23-46 Dong Jun, Fan Songlin, Han Fang, Zhou Xiaoping, Hui Jianchao, Li Rui (Research Institute of Petroleum Engineering, Dagang Oilfield Company, PetroChina, Tianjin 300280, China) Abstract: Well Guan2146 is located in Kongdian buried hill structural belt in No.3 Oil Production Plant of Dagang Oilfield, which is an electrical pump well. The well is an absorption well with low pressure and its pressure coefficient is only about 0.7 1. Clear water of 80 m3 fully leaks off during sand washing operation in April 2012. In order to reduce costs, a new deformable microfoam reservoir protection liquid, made up by new foaming agent, active agent, composite stable foam agent, and debris free system combined with slug method are used. The microfoam system has a good stability(more stable than general foam) , with the structure complex, depletion layer obvious and drillability being definite. It can deform when it is compressed, which is a new workove