RP120可回收压裂液体系研究与现场试验  

DEVELOPMENT OF RP120 RECYCLABLE FRACUTRING FLUID SYSTEM AND ITS FIELD TEST

作　　者：王所良 闵琦[3] 董时政[3] 许伟星 李志航 张小纪 许飞[3] 何先君[3] 

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 [2]低渗透油气田勘探开发国家工程实验室 [3]长庆油田分公司工程技术管理部 [4]长庆油田分公司第三采气厂

出　　处：《钻采工艺》2017年第5期95-97,114,共4页Drilling & Production Technology

摘　　要：针对油田作业现场压裂返排液处理难题,室内开发了一种可由破胶液重复配制压裂液的稠化剂PM,并形成RP120可回收压裂液体系。该稠化剂在水中溶解迅速,可以实现连续混配施工,利用该稠化剂与清水及该破胶液配制的压裂液在105℃、170 s^(-1)下剪切60 min后的黏度均高于80 mPa·s,破胶剂用量为0.003%~0.005%,残渣含量12.5 mg/L,黏土防膨率72.5%,破胶液表面张力22.3 mN/m。现场收集使用的返排液占施工总液量的15.4%,达到了RP120可回收压裂液返排液重复利用的预期试验效果,减轻了返排液处理的环保压力,为"清洁化生产"提供了技术支持。In order to solve the challenges of flowback fluid treatment onsite,a thickening additive PM was developed which could use gel-breaking fluid to repeatedly prepare the fracturing fluid,and then a new RP120 recyclable farcturing fluid sytem was developed. The thickener can be dissolved in water very fast and can be prepared on line. The viscocity of the fracturing fluid system mixed with the thickener,fresh water and the gel-breaking fluid is above 80 mPa·s after continuous 60-minute shearing at 170s^(-1) at 105℃,the gel breaker concentration is 0. 003%-0. 005%,residue content 12. 5 mg/L,clay stabilization rate72. 5%,surface tension of the gel-breaking fluid 22. 3 mN/m,the recycled flowback fluid accounts for 15. 4% of the total frac-turing fluid. The flowback of RP120 recyclable farcturing fluid sytem can meet the recycling requirements,relieving the environmental burden of flowback fluid treatment and providing a magnificent technical support for clean production at oil fields.

关 键 词：聚合物 可回收 压裂液 返排液 清洁化生产 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]