反相微乳液型聚合物压裂液的研究及应用  

Study on a reverse phase micro-emulsion polymer fracturing fluid and its application

作　　者：魏俊[1,2] 戴秀兰 陈腾飞 刘通义 王锰[1] WEI Jun;DAI Xiu-lan;CHEN Teng-fei;LIU Tong-yi;WANG Meng(College of Chemistry&Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China;Baichun Petroleum Technology Co.,Ltd.,Chengdu 610500,China;Xi'an Changqing Chemical Industry Group Co.,Ltd.,PetroChina Changqing Oilfield Company,Xi'an 710018,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]成都佰椿石油科技有限公司,四川成都610500 [3]中国石油长庆油田分公司西安长庆化工集团有限公司,陕西西安710018

出　　处：《现代化工》2020年第1期111-114,119,共5页Modern Chemical Industry

摘　　要：利用反相微乳液法合成了一种清洁压裂液用反相微乳液型稠化剂BCG-1R。BCG-1R在水中起黏时间短,配制时不会出现结团和"鱼眼"现象,得到的压裂液均匀。由该稠化剂和配套添加剂配制而成的压裂液的抗温能力可达160℃,具有良好的耐温耐剪切性能和悬砂性能。压裂液完全破胶后呈半透明状,表面张力低至25.86 m N/m,几乎无残渣(4 mg/L以下)。破胶液与实验室的原油样品4 h内破乳率可达100%。针对某实测温度为118.6℃的油井,采用连续混配法并以BCG-1R为稠化剂配制的压裂液进行压裂施工,施工后增产效果良好。BCG-1 R,a kind of reverse phase micro-emulsion thickening agent for clean fracturing fluid,is synthesized by means of reverse-phase micro-emulsion method.BCG-1 R can be dissolved in water for a short time.When it is used to prepare fracturing fluid,there will be no agglomeration and"fisheye"phenomena.The obtained fracturing fluid from BCG-1 R and matching additives is uniform,has a good temperature resistance as high as 160℃and shows good temperature-tolerate and shear-tolerate properties as well as good sand suspension ability.It also has low friction resistance.After the fracturing fluid is broken,gel breaking liquid is translucent with a surface tension as low as 25.86 m N·m-1 and has hardly residue(less than 4 mg·Lm-1).The gel breaking liquid’s demulsification rate to crude oil from Yanchang Oilfield can reach 100%within 4 h.The fracturing fluid that is prepared by continuous blending method with BCG-1 R as thickening agent is used in an oil well with a temperature of 118.6℃,an excellent production enhancement effect has been achieved.

关 键 词：反相微乳液聚合 清洁压裂液 耐温耐剪切 低残渣 连续混配 

分 类 号：O357.54[理学—流体力学]