苏里格气田压裂返排液消泡工艺现场应用  

The application of flowback liquid defoaming technology in Sulige gasfield

作　　者：陈挺 李世恒 邵泽恩 刘金松 张小均 田丹 

机构地区：[1]中国石油渤海钻探工程技术研究院压裂技术中心,天津300280 [2]中国石油渤海钻探油气合作开发分公司,天津300280 [3]中国石油大港油田分公司第六采油厂,天津300280

出　　处：《石油化工应用》2017年第7期86-89,共4页Petrochemical Industry Application

摘　　要：苏里格地区进行压裂施工时,在压裂液中加入发泡剂来减小施工后的返排时间,提高返排率。返排液在发泡剂的作用下会产生大量的泡沫,对环境造成污染,且过多的泡沫影响潜水泵的工作效率,延长返排时间。针对这一问题,采用聚醚改性聚硅氧烷作为消泡剂,在苏里格两口直井进行了消泡施工现场实验。根据现场返排液的组成,研究消泡施工工艺,施工效果良好。The foaming agent was added into fracturing fluids to minimize the flowback time and increase the flowback rate when fracturing construction was done in Sulige area. The flowback fluid can produce a large amount of foam at the time of the foaming agent, causing the enviroment polluted seriously. Besides, the overmuch bubbles affected the work efficiency of immersible pump, increasing the flowback time. In response to this problem, polyether modified silicone was selected as defoamer and two vertical wells were conducted defoaming technology field test. According to the composition of flowback fluids, the technology of defoaming construction was investigated and the construction effect was excellent.

关 键 词：压裂返排液 聚醚改性聚硅氧烷 消泡 现场应用 

分 类 号：TE377[石油与天然气工程—油气田开发工程]