新型缔合压裂液黏弹性控制滤失的特性研究  

Study on the Property of Controlling Filtration by Viscoelasticity of a New Associated Fracturing Fluid

作　　者：林波 刘通义[1,2] 谭浩波[3] 魏俊 

机构地区：[1]成都佰椿石油科技有限公司,四川成都610500 [2]西南石油大学化学化工学院,四川成都610500 [3]中海油能源发展股份有限公司工程技术分公司,天津塘沽300451

出　　处：《西南石油大学学报（自然科学版）》2014年第3期151-156,共6页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：研究的新型缔合压裂液(GRF压裂液)无造壁性,因此,设计了一种适合此类压裂液滤失量测定的简易装置并制定了其滤失测定方法,评价结果表明其滤失性能较好。利用RS6000流变仪及岩芯驱替装置研究了GRF压裂液的黏弹性对其在多孔介质中渗流阻力的影响,结果表明:GRF由于具有优良的黏弹性,能在岩芯孔隙中建立有效的渗流阻抗R0,并且黏弹性越强、岩芯渗透率越低,R0就越大,压裂液渗流越困难;而液体表观黏度和黏弹性对滤失的影响实验结果进一步表明,液体黏弹性是压裂液滤失控制的最主要因素,因此提出了GRF压裂液黏弹性控制滤失的理论。A new associated fracturing fluid（GRF）with non-building capacity was studied in this paper. Because it has no wall building capacity,a simple device for filtration measurement suitable for this kind of fracturing fluid was designed, and the methods for filtration measurement were also developed. The evaluation results show that the filtration property of GRF is better than before. The influence of the viscoelasticity on filtrational resistance in the porous medium was studied with RS6000 flowage meter and the core displacement device. The results show that GRF fracturing fluid can establish effective filtrational impedance（R0）in core pore owing to its excellent viscoelasticity;the stronger the viscoelasticity is and the lower the core permeability is,the larger R0 is,and the more difficult the fracturing fluid filtrates;the test results further indicate that the viscoelasticity of the liquid is the most important factor to filtration controlling,and the influence of apparent viscosity and viscoelasticity on the fluid loss was studied in the paper. Therefore we conclude that viscoelasticity of GRF fracturing fluid can control its filtration.

关 键 词：缔合压裂液 黏弹性 松弛时间 渗流阻抗 滤失 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]