井筒储存效应与井筒储存系数:在油井测试过程中,由于井筒中的流体的可压缩性,关井后地层流体继续向井内聚集,开井后地层流体不能立刻流入井筒,这种现象称为井筒储存效应。描述这种现象大小的物理量为井筒储存系数,定义为与地层相通的井筒内流体体积的改变量与井底压力改变量的比值。
建立了各种边界条件下考虑井筒储存效应和表皮效应的非线性不稳定渗流数学模型,并用数值法对其求解。
The nonlinear mathematical models with wellbore storage and skin effects under several boundary conditions were established and solved by using numerical methods.
多级变流量试井可以减少井筒储存效应,缩短测试时间,节省成本,使试井与生产的矛盾在一定程度上得以缓解。
The multi-rate variable well testing can weaken wellbore storage, shorten test time and economize the cost of test, and the contradiction between test and production is also solved to some degree.
建立了在多井条件下考虑井筒储存和表皮效应的煤层气不定常渗流模型。
A new coalbed methane transient seepage flow model with multi-wells is developed by considering the wellbore storage and skin effect.
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