注采井间压力计算模型及应用  

CALCULATING MODEL AND ITS APPLICATION FOR THE PRESSURES BETWEEN THE INJECTOR AND PRODUCERS

作　　者：包志晶[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2016年第1期58-61,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项课题"特低渗油藏有效开发技术"(2011ZX05013-006)

摘　　要：目前地层压力是指油田在开发过程中某一阶段的地层压力,对评价油田开发效果具有重要意义。根据渗流理论,依据势的定义及叠加原理,建立了不等产量一注多采井组压力计算模型。根据生产动态资料,可在不关井情况下,计算注采井间的地层压力。在此基础上应用VB语言编制相应程序,经平面耦合,绘制断块内地层压力分布,取各注采井间供油半径处压力的平均值作为断块的平均地层压力。计算实例表明,在距油水井10 m范围内压力下降较快,占总压降的60%以上;计算模型计算的平均地层压力与实际测试值对比,计算精度较高,能够满足油田实际需要。The present formation pressure is the formation pressure in a certain period of an oilfield development ; it possesses important significance for the evaluation of the oilfield development. According to the percolation theory, the pressure calculating model for the unequal production and one injector ＆ multi-producers is established on the base of the potential of the definition and the principle of superposition. On the basis of the dynamic production da- ta, the formation pressures between the injector and producers can be calculated without the well shut-in. And fur- thermore with the help of the corresponding compiled program by VB language, the pressure distribution in the fault blocks is plotted by the plane coupling, the average present formation pressure of the fault blocks is resulted from the average pressure value at the oil supply radii between the injector and producers. The calculated case history shows that the pressure drops quickly in the range of 10 m of these wells, the total pressure drop is over 60%, and moreover the calculation accuracy of the average formation pressure by the model is pretty higher than the actually tested value, so the actual requirements of the oilfield can be well met.

关 键 词：地层压力 注采井组 压力预测 水驱油藏 

分 类 号：TE121.1[石油与天然气工程—油气勘探]