疏松砂岩油藏大孔道定量描述初步研究

Preliminary study on quantitative description of highcapacity channel in loose sandstone reservoir.

注水开发稠油疏松砂岩油藏在开发后期平面大孔道和层间窜槽是制约三次采油和改善水驱开发效果的一大矛盾 ,为了解决这个矛盾 ,运用数学及油藏工程方法 ,进行了大孔道及层间窜槽机理、大孔道参数定量描述等研究 ,并编制了大孔道描述软件 ,应用该软件对孤东油田 2 0个开发单元 16 5 0口油水井进行了计算 ,通过动态监测资料证实 ,符合率达到 80 %以上。

Highcapacity channel in plane and interzone bypass channel restricted tertiary oil recovery and the improvement of water flooding effect in later period of the development for loose sandstone reservoir with heavy oil by waterflooding. In order to solve these problems, the mechanism of highcapacity channel and interzone bypass channel, and quantitative description of highcapacity channel parameters are studied using mathematical and reservoir engineering methods, and a software for describing highcapacity channel is programmed. This software is applied to 1650 oilandwater wells in 20 development blocks of Gudong oilfield, it is proved that the eighty percent results tally with the dynamic monitoring data.