压裂液防膨剂的研制与应用

Development and application of antiswelling agent used in fracturing fluid

杨帆 王琳 杨小华 姚奕明 王海波 杜涛

YANG Fan WANG Lin YANG Xiaohua YAO Yiming WANG Haibo DU Tao

中国石化石油工程技术研究院

SINOPEC Research Institute of Petroleum Engineering, Beijing100101, China

为了解决现有压裂液防膨剂用量大、配伍性差、不便于现场配液等问题，室内实验研究合成了防膨率高、配伍性好的有机阳离子型液体防膨剂，同时确定了中间产物的最优反应物配比、反应温度和反应时间，以及终产物的最优配方。经评价，防膨剂质量分数为0.3%时，减阻水压裂液的防膨率为70.5%，且不影响压裂液减阻率。中试生产的防膨剂产品与现场市售同类商品相比，防膨率提高17%~33%，在新疆、重庆等现场进行了多井段的压裂施工，表现出优良的配伍性和防膨性，能满足压裂液防膨和连续混配要求。

The antiswelling agent which is currently used in fracturing fluid is disadvantageous with large consumption, poor compatibility and inconvenient preparation on site.To solve these problems, three-step method was used to synthesize liquid antiswelling agent of organic cation type with high antiswelling rate and good compatibility.The optimal reactant proportion, reaction temperature and reaction time of intermediate product and the optimal formula of end product were determined.It is shown that when the mass fraction of antiswelling agent is 0.3%, the antiswelling rate of fracturing fluid with drag reducing solution is 70.5% and its drag reduction rate is unchanged.Compared with similar antiswelling agents available in current markets, the antiswelling agent of pilot production is 17%-33% higher in antiswelling rate.It is applied actually to multiple-hole-interval fracturing in Xinjiang and Chongqing, presenting good compatibility and antiswelling performance.It is demonstrated that this newly developed antiswelling agent can satisfy the requirements on antiswelling and continuous mixture of fracturing fluid.

10.13639/j.odpt.2017.03.017