CO_2增稠剂研究述评  

Research progress in CO_2 thickeners

作　　者：肖博[1] 张士诚[1] 张健[2] 柳凯誉 马艳丽 

机构地区：[1]中国石油大学(北京)石油工程教育部重点实验室,北京102249 [2]中国华能集团清洁能源技术研究院有限公司,北京102209 [3]中国石油长城钻探井下作业公司,北京100101 [4]中国石油长庆油田勘探开发研究院,陕西西安710018

出　　处：《西安石油大学学报（自然科学版）》2014年第4期78-83,105,共7页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家科技重大专项"大型油气田及煤层气开发示范工程"(编号:2011ZX05062)

摘　　要：在液体CO2压裂和CO2驱提高采收率中,都要使用稠密的CO2。由于其黏度较低,导致压裂施工时支撑剂沉降过快、砂比较小、滤失较大;CO2驱时极易沿高渗带窜流,严重影响其波及效率。为了解决这一难题,在稠密CO2中加入增稠剂,可以提升悬砂效果,降低滤失,增大波及体积。目前国内CO2稠化研究进展缓慢。基于对国内外CO2增稠剂研究的梳理总结,对研发过程中的主要问题进行分析,并在此基础上,展望CO2增稠剂的未来研究方向,以期推动国内CO2稠化剂的研究。Dense CO2 is used both in the liquid CO2 fracturing and CO2 flooding to enhance oil recovery. But its low viscosity leads to the fast settlement of proppant,relatively low sand concentration and large leak-off volume in fracturing and CO2 channelling through high-permeability zone and the sweep efficiency induction in CO2 flooding. In order to solve these problems,thickeners are added in the dense CO2,which can enhance the proppant carrying capacity,reduce the leak off and improve the sweep efficiency. However,domestic research progress in CO2 thickening is slow. Based on comprehensive summary of the researches of CO2 thickeners at home and abroad,the main problems existing in the development of CO2 thickeners are analyzed and the future research direction is also proposed. This paper has certain reference value to the domestic study of CO2 thickeners.

关 键 词：CO2增稠剂 流度控制 悬砂能力 氟基聚合物 研究进展 

分 类 号：TE357.45[石油与天然气工程—油气田开发工程]