摘要
针对压力恢复试井测试时间较短、压力波及范围小、解释结果不能综合反映长期生产后地层的特性等问题,建立考虑有效井径双重介质油藏的产量递减模型,并对模型进行求解,绘制新型产量递减分析样版曲线。通过实例拟合解释表明:产量递减分析法拟合解释结果与压力恢复试井解释结果较为接近,其结果更能综合反映地层的生产动态特性。产量递减分析方法不需关井测压,不影响油田正常生产,是一种非常优越的解释方法。
A production decline model is established for dual-porosity reservoirs with consideration of apparent wellbore radius aiming at the problems of build-up test such as short testing time,small pressure conformance area,and that the interpretation results can't reflect reservoir properties after long-term production.The model is solved,and a new type curve of production decline analysis is constructed.A case interpretation indicates that the result of production decline analysis method is close to that of build-up test,and can better represent production performance.The method can perform pressure test without shut-in and won't affect normal production.This is a very superior interpretation method.
出处
《特种油气藏》
CAS
CSCD
2008年第5期70-73,共4页
Special Oil & Gas Reservoirs
基金
中国石油天然气集团公司重点工程攻关项目(971007110165)资助
关键词
产量递减
双重介质
重整产量
物质平衡时间
有效井径模型
production decline
dual-porosity
normalized production
material balance time
apparent wellbore radius model
