摘要
徐深气田水平气井采用了裸眼分段压裂完井工艺,目前出现支撑剂严重回流问题,给试气和生产带来极大安全隐患。针对水平井裸眼压裂完井支撑剂回流问题,借鉴国内其他气田压裂支撑剂回流研究方法,结合气田支撑剂回流井和未回流井压裂、试气施工参数与特征,通过支撑剂力学分析、压裂施工异常情况分析和完井工艺特性分析,找出了支撑剂回流的3个主要原因:井口产量偏大、压裂施工异常和裸眼完井工艺局限。研究成果对于指导下步水平气井压裂设计和施工有着重要意义,为研究防止支撑剂回流技术提供了依据。
Openhole staged fracturing completion technolog)-ha?been applied in horizonta)gas wells in Xushen Gas Field.However jhe phenomenon of sever proppant backflow brings great security risk for ga$and production?In view of this problem,three main reason,i.e」huger wellhead production?abnor-mal fracturing operation and openhoie completion technology limitations,were found out on the basis of other oilfields proppant flowback studies domestically,referring to fracturing,gatesting operation parameters and features of all gas wells using proppant in Xvshen Gas Fidd,and proppant mechanical analysis abnormal fracturing operation analysis and cornplelion technology analysis?The results were of significant importance to guiding fraclunng design and operation of horizonial gas wells t and provided a basis for pmppanl backflow prevention study in the future.
出处
《采油工程》
2015年第1期29-32,76,共5页
Oil Production Engineering
关键词
水平气井
裸眼完井
分段压裂
支撑剂回流
原因分析
horizontal gas well
openhole completion
staged fracturing
proppant backflow
cause analysis
