调剖驱油技术中弱凝胶体系研究进展  

Application progress of weak gel systems in oilfield profile control technology

作　　者：许定佳[1] 郑永付 张松[1] 赵莹莹[1] 李文卓[1] 沈丁丰 

机构地区：[1]南京林业大学化学与材料系,江苏南京210037 [2]辽宁辽河油田康达实业集团有限公司,辽宁盘锦124010

出　　处：《化工进展》2015年第5期1323-1331,共9页Chemical Industry and Engineering Progress

基　　金：江苏省自然基金面上项目(BK20141471);"钻井粘土新材料的研发和以天然有机资源合成采油助剂的研究"校企合作课题

摘　　要：弱凝胶体系调驱技术是通过降低油田高渗透层渗透率、提高水驱波及系数、改善水驱开发效果来实现原油稳产的重要手段。本文综述了近年来原油开采过程中用于调驱技术的弱凝胶体系基本组成,不同交联剂对弱凝胶体系的成胶机理和成胶条件及弱凝胶体系性能的评价方法。总结了稳定剂、杀菌剂、抗盐剂、延迟剂等助剂和温度、矿化度、p H值等环境因素对弱凝胶体系性能的影响;概述了弱凝胶体系的矿场应用技术现状和现有弱凝胶体系在调剖应用中仍存在的问题。提出在传统表观方法研究弱凝胶交联机理的基础上,利用激光光散射法、原子力显微镜和计算机分子动力学模拟等技术加强对弱凝胶交联微观机理研究,为开发新型长效且廉价的调剖剂提供理论依据。Oil production can be improved by profile control technologies, including the decrease of the permeability of high permeable zone and the increase of water-flooded sweep efficiency contributions. The most important chemical systems applied in present profile control technologies are weak gel systems with many great merits in promoting oil output. In this paper, we make a summarization on following aspects： The basic component of weak gel systems used in oil exploration by profile control technologies in recent years, the mechanism and condition of the formation of weak gel systems initiated by different crosslinking agents, and the evaluation methods of the performance of weak gel systems. It is also discussed that how additives, including stabilizing agents, bactericides, salt resistances, delay agents, etc., and environmentalfactors, such astemperature, salinity, pH, etc., affect the properties of weak gel systems. Based on the current application of weak gel systems, it is pointed out that there are still some problems unsolved in the profile control processes when the weak gel systems are employed. To develop new effective and inexpensive profile control agents and make the corresponding theoretical basis to new agents, methods to investigate the gelling mechanism of weak gel systems need to be improved. The improvement is going to be a transition from traditional macroscopic research methods to microscopic research methods, such as the laser light scattering,atomic force microscope and computer molecular dynamic simulation, etc.

关 键 词：弱凝胶 调剖 成胶机理 评价方法 计算机分子动力学模拟 

分 类 号：TE35[石油与天然气工程—油气田开发工程]