大庆油田三类油层聚合物驱的合理注采比  

The proper injection-production ratio of polymer flooding and recovery in class Ⅲ reservoirs in Daqing Oilfield

作　　者：赵国[1] 

机构地区：[1]大庆石油管理局,黑龙江大庆163453

出　　处：《大庆石油学院学报》2008年第1期108-111,共4页Journal of Daqing Petroleum Institute

摘　　要：以大庆喇嘛甸油田喇8-182井区高Ⅱ1-18油层为例,研究大庆油田三类油层聚合物驱的合理注采比.计算聚合物分子的回旋半径,经空气渗透率与孔隙半径中值关系曲线分析,认为三类油层聚合物驱具备可行性.利用启动压力梯度实验,研究油层渗透率与启动压力梯度的关系;利用数值模拟方法,研究聚合物驱注入速度对不可及孔隙体积的影响.结果表明,大庆油田三类油层合理注采比应为1.10～1.15.Taking Daqing Oilfield Lamadian 8-182 well field high II 1-18 layer as an example,reasonable injection-production ratio of polymer flooding is established in class III reservoir of Daqing Oilfield.Polymer flooding is feasible in class III reservoirs based on the calculation of polymer molecular radius of the roundabout and the curve analysis of the air permeability and the medium value of the pore radius.The relationship between permeability and the threshold pressure gradient is studied by the threshold pressure gradient experiment.The impact of injection rate of polymer flooding on the inaccessible pore volume is studied by the numerical method.The result shows that reasonable injection-production ratio should be at 1.10 to 1.15 in class III reservoir of Daqing Oilfield.

关 键 词：聚合物驱 回旋半径 启动压力 不可及孔隙体积 注采比 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]