苏里格低渗透气藏水平井有效产气长度的压恢试井解释研究  

Research on Pressure Restore Well Testing Interpretation for Effective Gas Production Length of Horizontal Well in Low Permeability Gas Reservoir of Sulige Gas Field

作　　者：王少飞[1] 聂仁仕[2] 付晓燕[1] 刘道天[1] 

机构地区：[1]长庆油田分公司勘探开发研究院,陕西西安710018 [2]"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：《油气井测试》2015年第3期12-14,75,共3页Well Testing

基　　金：高等学校博士学科点专项科研基金新教师类资助课题(20135121120001);四川省科技厅基础研究项目(2015JY0132);国家自然科学基金青年科学基金项目(51304164)资助

摘　　要：苏里格低渗透气藏部分井采用水平井开发,最大实钻水平井段长度达1301 m,如何评价水平井有效产气长度是现场急需解决的问题。从水平气井基本试井理论出发,分析了准确获取水平井有效产气长度参数的试井拟合原理与方法。对苏里格低渗透气藏6口实测水平井进行了有效的试井解释,求取了储层水平渗透率、垂直渗透率、水平井有效产气长度等特性参数。解释的水平井有效产气长度占实钻水平井段长度比例范围为（13.68%~65.12%）,平均35.96%。解释结果可为苏里格低渗透气藏的气藏工程分析提供基础数据。Part of the wells in Sulige low permeability gas reservoir are exploited by horizontal wells,the largest real drilled horizontal section length of which reaches to 1301 m,and how to evaluate the effective gas producing length of horizontal well is an urgent problem to be solved. From the basic testing theory about horizontal gas well,fitting principle and method of well test to accurately obtain the effective gas horizontal well length parameter are analyzed. Through effective well test interpretation to six measured horizontal wells in Sulige low permeability gas reservoir,some characteristic parameters of the reservoir horizontal permeability,vertical permeability and effective length of gas production are calculated. The ratio range of effective gas horizontal well length to real drilling of horizontal section length is( 13. 68% ~ 65. 12%),an average of which is 35. 96%. The interpreting result provides the basic data for engineering analysis of the gas reservoir in Sulige low permeability gas reservoir.

关 键 词：苏里格 低渗透气藏 水平井 压力恢复试井 

分 类 号：TE353[石油与天然气工程—油气田开发工程]