摘要
生产油井压裂后,在单井试油试采过程中,测压恢复关井的时间不同,其中有些井压力恢复曲线不能出现边界反映段,渗流不能反映地层中真实流动特征。针对这种情况,对于长庆绥靖油田塞39井区长2低渗油藏进行了研究。结果表明,当油井的流动时间达到3倍的地层径向流开始时间后,利用此时的压力数据,解释地层参数和地层压力,其结果的误差就会比较小,同时能较准确地判断边界类型。这类问题的解决具有实际意义,能够直接指导生产。
After oil wells were fractured, some build-up pressure curves can not appear boundary reflected part for different closing time at oil testing and recovery in single well and percolation flow can not show the true flow feature. To these situations, study on Chang2 low permeable oilfield of Sai39 well district in Suijing oilfield has been conducted and the results show that when flowing time reaches three times of the starting time of radial flow, error of interpreting formation parameters and formation pressure is less by using these pressure data, and can show the boundary type accurately. The method has actual interesting that can guide producing operation directly.
出处
《油气井测试》
2007年第1期17-19,共3页
Well Testing
基金
中石油中青年科技创新基金(04E7023)
关键词
安塞油田
油井
不稳定试井
径向流
边界类型
Ansai oilfield, oil well, destabilization well testing, radial flow, boundary types
