自悬浮支撑剂研究进展及应用现状

Research progress and application status of self-suspension proppant

阐述了膨胀型自悬浮支撑剂、黏弹型自悬浮支撑剂、气悬浮支撑剂的研究现状;从常规物理性能、导流能力、悬浮性能、包覆层溶液性能等方面探讨了自悬浮支撑剂性能评价现状;详细分析了自悬浮支撑剂的国内外应用情况。综合分析认为,自悬浮支撑剂作为一种新型支撑剂,将支撑剂与压裂液合二为一,不借助常规压裂液体系就能长时间悬浮,可实现清水压裂,在低渗、易受损储层及页岩气等非常规气藏具有显著的技术优势。国内自悬浮支撑剂的抗温能力还需进一步提高,同时应加强其配套工艺研究。

This paper describes the research status of expansive self-suspension proppant,viscoelastic self-suspension proppant and gas-suspension proppant;In addition,this paper also discusses the evaluation status of the performance of self-suspended proppant from the aspects of conventional physical properties,conductivity,suspension properties and coating solution properties,and analyzes the application of self-suspended proppant at home and abroad in details.Comprehensive analysis shows that as a new type of proppant,self-suspension proppant combines proppant and fracturing fluid,which can be suspended for a long time without the help of conventional fracturing fluid system and can realize clean water fracturing.It has significant technical advantages in low permeability,easily damaged reservoirs,and unconventional gas reservoirs such as shale gas reservoir.The temperature resistance of domestic self-suspension proppant needs to be further improved,and its supporting process research should be strengthened.