文章摘要
液态 CO2增稠压裂液流变性能分析
Analysis on Rheological Properties of Thickened Liquid CO2 Fracturing Fluid
  
DOI:10.19346/j.cnki.1000-4092.2017.02.012
中文关键词: CO2干法压裂  液态CO2增稠压裂液  高压管路流变测试  黏度
英文关键词: CO2 waterless fracturing  thickened liquid CO2 fracturing fluid  high pressure pipeline test  viscosity
基金项目:国家科技重大专项课题 “低渗、 特低渗透油气田经济开发关键技术”(项目编号 2011ZX05013-003)
作者单位
崔伟香, 舒玉华, 崔明月, 王春鹏 中国石油勘探开发研究院 河北 廊坊 065007 
摘要点击次数: 184
全文下载次数: 
中文摘要:
      针对目前 CO2干法压裂工艺技术存在压裂液黏度低、 携砂困难等技术难题, 将氟醚羧酸盐类表面活性剂增稠剂 (FAL-16) 和络合金属离子 (铝) 有机盐增稠助剂 (FAL-31) 分别按 1%加量加入液态 CO2中制备了液态 CO2增稠压裂液, 采用高压管路流变实验模拟了液态 CO2增稠压裂液在管路内的增稠过程, 研究了液态 CO2增稠压裂液的流变性能。研究结果表明: 在液态 CO2中加入 1%的增稠剂 FAL-16 和 1%增稠助剂 FAL-31 能显著提高液态CO2压裂液的黏度, 液态CO2增稠压裂液的黏度最高可以达到20 mPa· s (压力20 MPa、 温度0℃、 剪切速率393 s-1),增黏倍数在 90~498之间, 液态 CO2增稠压裂液呈现剪切稀化特性, 黏度随着温度的增加呈指数递减; 随温度的升高, 液态 CO2增稠压裂液体系的流动指数 n增大, 稠度系数 k减小。图 9表 1参 13
英文摘要:
      At present,CO2fracturing technology faces many challenges of low viscosity and poor sand carrying capacity. The thickened liquid CO2 fracturing fluid(TLCFF)was prepared by add a new thickener FAL-16(fluorine ether carboxylate surfactant) and auxiliary additive FAL-31(complexing metal ion(aluminum)organic salt)at the dosage of 1% into the liquid CO2,and the rheological properties of the TLCFF were evaluated by a high pressure pipeline rheological experimental device. The results showed that,the viscosity of the liquid CO2 fracturing fluid could be improved significantly by adding 1% FAL-16 and 1% FAL-31,and the viscosity of the TLCFF was up to 20 mPa·s(20 MPa,0℃,393 s-1),which was 86—498 times higher than that of pure CO2. The TLCFF showed the characteristic of shear thinning,the viscosity decreased exponentially with the increase of temperature. With the increase of temperature,the flow index n of the TLCFF increased,while the consistency coefficient k of the TLCFF decreased.
查看全文   查看/发表评论  下载PDF阅读器
关闭
点击这里给我发消息

点击这里给我发消息