气藏压裂提高裂缝有效导流能力的技术分析  

TECHNICAL ANALYSIS OF IMPROVING EFFECTIVE FRACTURE CONDUCTIVIITY IN GAS RESERVOIR FRACTURING

作　　者：李勇明[1] 刘岩[1] 王文耀[1] 赵江玉[1] 

机构地区：[1]油气藏地质及开发工程国家重点实验室西南石油大学,四川成都610500

出　　处：《新疆石油天然气》2009年第2期56-58,共3页Xinjiang Oil & Gas

基　　金：四川省应用基础研究项目(2007JY042)

摘　　要：提高压裂裂缝有效导流能力是改善气藏压裂效果的重要方面。本文从提高裂缝初始导流能力、降低导流能力的伤害、保持裂缝长期导流能力等方面系统分析了近年来实现高导流能力的一些典型压裂工艺技术措施,包括:二次加砂压裂、端部脱砂压裂、提高支撑缝宽的超常规压裂、高砂比大粒径压裂、低伤害压裂液压裂、防支撑剂回流压裂等工艺。通过其施工工艺和技术特点的分析,为气藏压裂工艺技术措施选择提供依据。Enhancing effective fracture conductivity is one of the important aspects of improving gas reservoir postfracture response.Based on improving initial fracture conductivity,reducing the damage of conductivity and maintaining long-term fracture conductivity,this paper analyzed several typical fracturing technologies which have been used for achieving high conductivity in recent years,such as secondary sand fracturing,tip screenout fracturing,supernormal fracturing technology for increasing propped fracture width,high sand ratio and large-grained fracturing,low damage of fracture fluid fracturing and preventing proppant back flow fracturing.The analysis of construction technologies and technical characteristics provides references for gas reservoir fracturing technology.

关 键 词：压裂 导流能力 压裂液伤害 支撑剂回流 

分 类 号：TE377[石油与天然气工程—油气田开发工程]