【摘要】 井间干扰会对试井曲线的影响非常大。本文用数值试井方法研究了井间干扰对试井曲线的影响,采用PEB I网格技术,给出了在PEB I网格下油水两相流动控制方程的离散形式,并耦合了井筒存储和表皮系数公式,得到了压力降落数值试井问题的产量模型。对三种井部署情况经数值试井模型计算并对比发现,双对数曲线的早期段保持一致,由于干扰井的影响,中后期段变化非常明显,干扰井越多,测试井压降越快,试井曲线上抬幅度越大。更多还原

【Abstract】 Inter-well interference will greatly affect the well test curve.In this paper,a numerical well test method is presented to study the inter-well interference effect on the well test curve,which used PEBI grid and gave the discrete control equations of oil-water-phase flow.The flow model for pressure drawdown well test was derived,which takes the well-bore storage and skin effect into account.The flow models and controlling equations were coupled,finally.According to comparing and analyzing the result under three patterns of placing well show that log-log curves at early stage coincide with each other,but obviously changing at medium stage and last stage due to the effect of interference wells.And the more interference wells,the faster pressure of testing well draw down and the greater is up-warp extent of well test curves.更多还原