【摘要】 为了研究油藏各向异性对鱼骨状分支井产能的影响,基于空间变换理论将各向异性渗透率空间转换为各向同性渗透率空间,并应用鱼骨状分支井渗流模型进行产能预测。结果表明:油藏各向异性会导致鱼骨状分支井等压线分布发生明显偏转,各向异性程度越大,偏转越明显;水平面内垂直于主井筒方向的渗透率对鱼骨状分支井产能起决定作用,水平面内平行于主井筒方向的渗透率起次要作用;当水平面内渗透率各向异性较为明确时,应选择主井筒方向与最大渗透率方向垂直;当水平面内渗透率各向异性不明确时,选择的分支角度越大,越能消除水平面内渗透率各向异性不确定性带来的影响。更多还原

【Abstract】 In order to study the influences of reservoir anisotropy on the productivity of herringbone multi-lateralwell,based on the theory of coordination conversion,anisotropic permeability space is transformed into isotropicpermeability space,and prediction is made about the productivity of herringbone multi-lateral wells with percolationmodel.It can be conclude that:Reservoir anisotropy can change the pressure distribution dramatically.The greateranisotropy is,the more obvious deflexion there is;The permeability which is perpendicular to the main bore ofherringbone multi-lateral well plays the most important role on the productivity.The permeability which parallel tothe main bore of herringbone multi-lateral well plays a secondary role on the productivity.When the anisotropy isclear,the direction of the main bore of herringbone multi-lateral well should be perpendicular to the direction of themain permeability.When the anisotropy is unknown,a big branch angle should be picked to eliminate the influencesof anisotropy.更多还原