西南石油大学学报(自然科学版)

• 油气化学工程 • 上一篇    下一篇

新型缔合压裂液黏弹性控制滤失的特性研究

林波1,刘通义1,2,谭浩波3,魏俊1   

  1. 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
  • 出版日期:2014-06-01 发布日期:2014-06-01

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

Lin Bo1, Liu Tongyi1,2, Tan Haobo3, Wei Jun1   

  1. 1. Chengdu BaiChun Petroleum Technology Co. Ltd.,Chengdu,Sichuan 610500,China
    2. College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    3. EnerTech–Drilling & Production Co.,CNOOC,Tanggu,Tianjin 300451,China
  • Online:2014-06-01 Published:2014-06-01

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。

关键词: 缔合压裂液, 黏弹性, 松弛时间, 渗流阻抗, 滤失

Abstract:

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.

Key words: associated fracturing fluid, viscoelasticity, relaxation time, filtrational impedance, filtration