摘要
水驱油田开发过程中，由于储层在流体长期冲刷作用下，岩石润湿性逐渐发生变化，并对原油生产产生一定影响。目前水驱油藏模拟器中没有考虑岩石润湿性的变化。为了提高模拟精度，在黑油渗流模型的基础上，建立了能够考虑储层润湿性随注水开发变化的新模型，开发了新的数值模拟器，并在该模拟器上模拟了润湿性变化对生产动态的影响。研究结果表明，水驱开发过程中由于润湿性的变化，使含水上升速度加快、采出程度降低。油田实例对比验证了该模型的正确性。
In the course of the oilfield development by water flooding, due to long-term washing action by the reservoir fluids, the rock wettabilities gradually change and thus produce a certain impacts on oil production. At present, the changes of the rock wettability have not been considered in water flooding simulator. In order to increase the simulation precision, on the basis of black oil flow simulator, the new model concerning the above changes has been established and moreover the new simulator is developed as well. And furthermore, the influences of wettabili- ty changes on production performance have been displayed on the new simulator. The study results show that just because of the wettability changes in the course of water flooding development, water cut rises faster and faster, the produced degree reduces lower and lower. The contrast of the oilfield case history has verified the accuracy of the new model.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2011年第4期89-92,共4页
Petroleum Geology & Oilfield Development in Daqing
关键词
岩石润湿性
油藏数值模拟
水驱
采出程度
rock wettability
numerical simulation for oil reservoir
water flooding
produced degree
