聚合物注入压力预测方法  

FORECASTING OF POLYMER INJECTION PRESSURE

作　　者：张志坚[1] 韩培慧[1] 陈星宏[1] 

机构地区：[1]大庆石油管理局勘探开发研究院

出　　处：《大庆石油学院学报》1995年第4期22-25,共4页Journal of Daqing Petroleum Institute

摘　　要：依据裘比公式建立了一种新的聚合物驱油井口注入压力预测方法。应用大庆油田中区西部聚合物驱油单层试验区的矿场试验结果对该预测方法进行了检验，预测结果与实际结果不仅变化趋势一致，而且数值也较接近。最大绝对偏差１．３Ｍｐａ，最大相对偏差０．２０；平均绝对偏差０．４１ＭＰａ，平均相对偏差０．０６。该预测方法给出的结果能满足工程上的要求。最后，给出了对北一区断西聚合物驱油工业性试验区的预测结果，在年注入聚合物溶液占孔隙体积为０．１５～０．１９时，采用２５０～３００ｍ的注采井距是可行的。Anew forecasting method of wellhead injection pressure for polymer flooding is estab-lished based on Dupuit formula. The method was tested by the experimental results of poly-mer flooding pilot area of one layer at the central area of western Saertu in Daqing Oilfield.The forecast result is not only in agreement with the actual one in variation tendency,butalso similar in value. Maximum absotute deviation is 1.3MPa,Maximum relative deviationis 0.20.Average absolute deviation is 0.41 MPa, average relative deviation is 0.06.It isthus clear that the results given by the forecast method can meet the needs of polymer flood-ing.Lastly,forecast results were given for the industral polymer flooding at Beiyiduanxiarea. It is feasible that the spacing between an injcction well and a production well is from250 m to 300 m at annual injection rate from 0.15 to 0.19 pore volume.

关 键 词：井口压力 裘比公式 高聚物驱油 驱油 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]