摘要
针对煤层气泡沫压裂液表面张力高,压裂液滞留煤层造成地层伤害的问题,研制了低表面张力氟碳表面活性剂(AS-3)。实验测定AS-3溶液的表面张力、吸附量、泡沫综合值和悬浮性能,结果表明:质量分数0.3%的AS-3溶液表面张力为16.23 mN/m;在煤表面达到吸附平衡时,饱和吸附量为17.70 mg/g;AS-3水溶液对粒径超过100目的煤粉具有良好悬浮能力。AS-3溶液性能良好,配液简单,适用于煤层气等非常规储层的压裂。
In the light of the problems of the high surface tension, entrapment in the coal beds and damage caused from the above remains, the fluorocarbon anionic surfactant with low surface tension （ AS-3 } is developed. The sur- face tension, adsorbed capacity, comprehensive value of the foam and suspending performance of the surfactant so- lution are tested. The results show that the tension of the solution with 0. 3% mass fraction is 16.23 mN/m; when the adsorption on the surface of the coal reaches the state of equilibrium, the saturated adsorption capacity is 17.70 mg/g; for the braize with a particle diameter of more than 100 meshes, AS-3 water solution possesses much better suspending performance. AS-3 water solution is characterized by favorite capacity and simple to prepare the solution and moreover adaptive to the fracturing of those unconventional reservoirs with CBM and so on.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2013年第5期170-174,共5页
Petroleum Geology & Oilfield Development in Daqing
基金
"十二五"国家科技重大专项"大型油气田及煤层气开发专项氮气泡沫压裂液起泡剂研发"(2011ZX05037003-001)
教育部2012年度高等学校博士学科点专项科研基金资助课题"煤层气泡沫压裂液用高效起泡剂的合成及在煤表面聚集行为研究"(20120133110010)
关键词
起泡剂
泡沫综合值
煤层气
泡沫压裂液
表面张力
吸附量
foaming agent
comprehensive value of the foam
coal bed methane （ CBM ）
foam fracturing fluid
surface tension
adsorbed capacity
