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 mN/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-1R,a kind of reverse phase micro-emulsion thickening agent for clean fracturing fluid,is synthesized by means of reverse-phase micro-emulsion method.BCG-1R 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-1R 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 mN·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-1R as thickening agent is used in an oil well with a temperature of 118.6℃,an excellent production enhancement effect has been achieved.

魏俊(1988-),男,工程硕士,工程师,研究方向为压裂改造,553044317@qq.com