开采多层裂缝性储层井的压力反映特征

PRESSURE BEHAVIOR OF LAYERED DOUBLE POROSITY RESERVOIRS

运用数值模拟方法对开采多层双重介质储层井的压力反映特征的研究表明：开采多层储层的油气井的动态与开采其等效单层油气井的动态不相同，层间或层内非均质性会显著影响到油气井的动态；当层间有越流时，层间非均质性使得压力反映曲线可能是规则的，也可能是不规则的，这两种可能取决于越流强度、窜流系数以及储容比的相对大小。

The authors have studied the single well pressure drop when layered double porosityreservoirs are produced by numerical simulation. The study results indicate: (1)The performanceof producing a multilayer reservoir is not identical to the performance of producing an equivalentsingle-layer reservoir and the anisotropic degree between layers can influence the performance,of awell obviously, (2)If there exists crossflow,the curve of the performance of producing anisotropicmultilayer reservoir may be both regular and irregular depending on the relative magnitude of thecressflow,interflow and storage ratio. The authors have also studied the performance when one oftwo layers is produced and the other layer is sealed.