单家寺油田蒸汽驱先导试验驱油机理研究

Study on oil displacement mechanism of pilot test of steam flood in Shanjiasi oil field.

单家寺油田是一个埋藏较深的具有活跃过、底水的稠油油田。蒸汽吞吐曾获得很好的开采效果，但由于边、底水的侵入，最终蒸汽吞吐采收率较低。为了探索利用蒸汽驱方式提高采收率的新途径，在该油田开辟了蒸汽驱先导试验区。在分析蒸汽驱和热水驱驱油机理的基础上，结合该油田现场及实验室实际资料和蒸汽驱跟踪数值模拟结果，对单家专油田蒸汽驱驱油条件和驱油机理进行分析判断，为评价该油藏蒸汽驱效果提供了依据。

Shanjiasi oil field is a deep buried heavy oil field with active edge and bottom water. Good recovery result had once been achieved by steam flood,however,because of invasion of edge and bottom water,the ultimate recovery factor of steam soaking is low. In order to seek out a new way to enhance recovery factor by steam flood,a pilot test area of steam flood has been set up in this oil field. Based on analysis of the mechanism of steam and hot water flood,combining with field and laboratory data of this oil field and tracing result of numerical modeling of steam flood,this paper analyzes the oil displacement condition and mechanism of steam flood in Shanjiasi oil field,thus provides basis for evaluating steam flood result of these reservoirs.