摘要
为了给出确定关井前生产时间的依据,针对不同油藏条件,进行了不同关井前生产时间对地层压力结果的影响程度分析,认为不同关井前生产时间对求取渗透率、井筒储存系数、表皮系数等参数基本没有影响,但是对平均地层压力存在较大影响,特别是对Ⅰ类油藏和Ⅲ类油藏当选择复合油藏模型时影响最大,并且找到了影响变化不大的关井前生产时间区间,由此来指导试井解释时的数据输入。
In order to determine appropriate flowing duration before shutting-in a well for buildup test,a study on influence degree of different flowing durations before shutting-in to reservoir pressure under different reservoir conditions is done.The result showed that flowing duration before shutting-in has nothing to do with the values of effective permeability,wellbore storage and skin factor etc.,but has something to do with average reservoir pressure obtained from well test interpretation,especially in the cases of reservoir type I and type III when composite reservoir model is selected in interpretation;and the range of appropriate flowing duration before shutting-in,which means that the calculated average reservoir pressure will not influenced seriously,is found out.The study can be a guide for well test interpretation.
出处
《油气井测试》
2010年第3期18-20,共3页
Well Testing
关键词
试井
平均地层压力
关井前生产时间
关井压力恢复
影响
well test,average reservoir pressure,flowing duration before shutting-in a well,pressure buildup,influence
