胜坨油田二区沙二段3砂层组分阶段油藏数值模拟

Staged numerical simulation of Layer 3 , Member 2, Shahejie Formation, in District 2 of Shengtuo Oilfield

用常规油藏数值模拟方法进行高含水期油藏剩余油分布模拟时,没有考虑油藏长期开发过程中储集层岩石和流体参数的变化,采用不变的地质模型和流体模型,导致模拟结果失真。分阶段数值模拟方法考虑了开发过程中岩石和流体参数的变化,采用分阶段地质模型和流体模型,使模拟结果更符合开发实际情况。选用Eclipse数值模拟软件中的黑油模型,应用分阶段数值模拟方法以及PEBI网格划分技术对胜坨油田二区沙二段3砂层组油藏进行高含水期精细数值模拟研究,分析剩余油分布的规律,取得了较好的效果。

In the simulation of residual oil distribution in a high water cut reservoir, the conventional numerical simulation may distort the results for it adopts invariable geology and fluid model without considering the change of reservoir rock and fluid characteristics during the reservoir development. The results of staged numerical simulation would accord with the fact of reservoir development because it adopts staged geology and fluid model considering the variation of rock and fluid properties during the development. By the method of staged numerical simulation and PEBI gridding with black oil model of Eclipse, the residual oil distribution of Layer 3, Member 2, Shahejie Formation, in District 2 of Shengtuo Oilfield was analyzed and favorable results were achieved.