油田深度调剖化学剂驱油效率与机理  

Research on Efficiency and Mechanism of Oil Recovery Using Chemical Agents for Deep Profile Control in Oil Fields

作　　者：王金月 WANG Jinyue(No.3 Oil Production Plant of Qinghai Oilfield Company,Mangya Qinghai 816499,China)

机构地区：[1]青海油田分公司采油三厂,青海茫崖816499

出　　处：《当代化工》2024年第7期1545-1549,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金青年科学基金项目(项目编号:52304036)。

摘　　要：随着石油资源的日益紧张,提高油田开采效率成了石油行业面临的主要挑战。选用3种不同的化学剂(PAM、SDBS、PAA)并通过测定岩心渗透率和油水界面张力进行驱油效率实验。实验结果显示,PAA在提高岩石渗透率方面表现最为突出,从130.14 m D增加到212.43 m D,增幅为63.2%,而SDBS则在降低油水界面张力方面表现最佳,从38.92 m N·m^(-1)降至21.00 m N·m^(-1),降低了46.2%。此外,在中温(40℃)和中压(20 MPa)以及适中的注入流量(100 L·min^(-1))下,驱油效率达到最优。化学剂在改变岩石孔隙结构及降低油水界面张力方面的作用,共同促进了油水流动性的提升,从而显著增强了整体的驱油效果。研究结果对于指导实际油田作业中化学剂的选择和应用具有重要的参考价值,为油田开发提供了新的视角和方法。As oil resources become increasingly scarce,improving oilfield extraction efficiency has become a major challenge facing the oil industry.In this article,three different chemical agents (PAM,SDBS,PAA) were used to conduct oil displacement efficiency experiments by measuring core permeability and oil-water interfacial tension.Experimental results showed that PAA performed best in increasing rock permeability,increasing from 130.14 m D to 212.43 m D,an increase of 63.2%,while SDBS performed best in reducing oil-water interfacial tension,decreasing from 38.92 m N·m^(-1)21.00 m N·m^(-1),reduced by 46.2%.In addition,the oil displacement efficiency reached its optimum under medium temperature (40℃) and medium pressure (20 MPa) conditions,as well as moderate injection flow rate (100 L·min^(-1)).The role of chemical agents in changing the rock pore structure and reducing the oil-water interfacial tension jointly promoted the improvement of oil-water fluidity,thereby significantly enhancing the overall oil displacement effect.The findings of this study have important reference value in guiding the selection and application of chemical agents in actual oilfield operations,and provide new perspectives and methods for oilfield development.

关 键 词：化学剂 深度调剖 渗透率 油水界面张力 驱油效率 

分 类 号：TQ047[化学工程] TG172[金属学及工艺—金属表面处理]