CQ-GNS压裂用稠化剂孪联非离子表面活性剂  

CQ-GNS Twin Nonionic Surfactant for Fracturing Fluid Thickener

作　　者：马托[1] 王忍峰[1] 徐洋[1] 柴巧玲[1] 李文彬[1] 

机构地区：[1]中国石油集团川庆钻探工程有限公司钻采工程技术研究院低渗透油气田勘探开发国家工程实验室

出　　处：《石油科技论坛》2015年第B10期147-150,共4页PETROLEUM SCIENCE AND TECHNOLOGY FORUM

基　　金：中国石油天然气集团公司工程技术分公司成果转化与推广应用项目"可回收低阻表面活性剂压裂液技术现场推广应用"(编号:2014T-004-004)

摘　　要：酸随着长庆致密油田开发的深入,水平井大规模分段压裂成为油田开发的主导技术,但伴随着压裂改造规模的扩大,压裂用水及返排液的处理成为制约水平井改造的主要因素。针对这一困难,开发了配套的CQ-GNS压裂用稠化剂孪联非离子表面活性剂,是可回收低阻表面活性剂压裂液体系的核心成分。压裂液体系具有无残渣、低伤害、低摩阻、直接混配,尤其是返排液可直接回收后,添加相同稠化剂可循环重复利用的特点,适合水平井及丛式井提速提效、节能环保和大规模工厂化作业需求。2012—2014年在长庆油田规模化推广145口油井及水平井(1392段),累计配制压裂液量超过62.9×10~4m^3,实际用水量29.8×10~4m^3,节约用水33.1×10~4m^3,返排液回收利用率达97.4%,最高循环利用21次,平均节水率达52.6%,节水效果明显。Large-scale staged fracturing horizontal well has become the dominant development technology at Changqing Oilfield thanks to continual tight oil development at the oilfield. However, treatment of fracturing water and flow-back fluid is the main factor to impair renovation of horizontal well as the scale of fracturing is expanded. To solve this bottleneck, CQ-GNS twin nonionic surfactant for fracturing fluid thickener is developed to be used as core component of recoverable low-resistivity surfactant fracturing fluid system. This fracturing fluid system has a number of characteristics, such as free of residues, low damage, low resistivity, direct mixture and able to be directly recovered after flow-back and recycled when added with the same thickener. It is suitable for horizontal wells and cluster wells increasing speed and efficiency, saving energy and protecting the environment, large-scale factory-like operation. It was used for 145 oil wells and horizontal wells in Changqing Oilfield between 2012 and 2014, with the formulated fracturing fluid accumulated to 62.9×10^4m^3. The actual water consumption was 29.89×10^4m^3, saving 33.1×10^4m^3 of water. The recycling and utilization rate of flow-back fluid reached 97.4 percent and was recycled for 21 times at maximum. The average water-saving rate was apparently improved by reaching 52.6 percent.

关 键 词：可回收 压裂液 表面活性剂 返排液 水平井 分段压裂 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程] TQ423.2[化学工程]