某海上断块油藏地质模型的建立

Establishment of Geological Model for an Offshore Fault Block Reservoir

海上油田断块油藏的三维地质建模一直是研究的重点和难点。本文针对某海上油田断块油藏的地质情况建立断层模型、构造模型,明确断块油藏目的层段的三维空间展布、断层的组合配置关系以及地层的变化规律,然后利用序贯指示模拟方法建立岩相模型,并在相控的地质约束条件下,建立孔隙度属性模型和渗透率属性模型,对某海上油田断块油藏的勘探开发具有十分重要的意义。

3D geological modeling for fault block oil reservoirs in offshore oil fields has been a research focus and difficulty. In this paper, according to the geological situation of a fault block reservoir in offshore oil field, fault model and structure model were established, 3D space distribution and change rule and combined configuration relationship of a objective interval formation were determined, then facies model was established by using sequential indicator simulation method. Under phased geological constraints, the sequential gauss simulation method was used to establish the models of porosity and permeability property.