河南油田高温油藏聚合物驱的驱油效率  

Oil Displacement Efficiency of High Temperature Reservoir Polymer Flooding in Henan Oilfield

作　　者：吕晓华[1] 肖磊[1] 张丽庆[1] 张伊林[1] 束华东[1] 郝明耀[1] 

机构地区：[1]中石化河南油田分公司勘探开发研究院,南阳473132

出　　处：《精细石油化工进展》2011年第2期11-13,共3页Advances in Fine Petrochemicals

摘　　要：针对河南双河油田V下区块高温(84.3℃)低渗的油藏特点,选取不同水解度的聚丙烯酰胺(1630s和ZL-I)进行驱油实验。结果表明,高浓度聚合物驱油效率明显高于低浓度聚合物,最佳聚合物浓度为1 600～2 000 mg/L。驱替实验表明,现场聚合物最佳注入量为0.4～0.5 PV。聚合物老化前后对比驱油实验表明,低水解度聚合物1630s适合V下区块油藏条件。In view of the characteristics of high temperature （ about 84.3 ℃） and low permeability in lower V reservoir block of Shuanghe Oilfield in Henan Province, polyacrylamides of different hydrolysis degree （ 1630s, ZL - I） were chosen to conduct the oil displacement experiment. The results have shown that the oil displacement efficiency of high concentration polymer is apparently higher than that of low concentration polymer and that the optimum polymer concentration is 1 600 to 2 000 mg/L. According to the displacement experiments, the optimum addition of this polymer is 0.4 to 0.5 PV in the oilfield. The results of the experi- ments for comparing the oil displacement effieiencies before and after the ageing of polymer have shown that the low hydrolysis degree polymer 1630s is suitable for the conditions in lower V reservoir block.

关 键 词：聚合物驱 聚丙烯酰胺 高温油藏 采收率 注入量 

分 类 号：TE357.4[石油与天然气工程—油气田开发工程]