新型预交联凝胶颗粒合成及非连续相溶液性能研究  

Synthesis of novel pre-crosslinked gel particles and study on the performance of discontinuous phase solution

作　　者：王立辉 夏惠芬[1] 韩培慧[2] 曹瑞波[2] 许天寒 李文卓 张思琪 WANG Li-hui;XIA Hui-fen;HAN Pei-hui;CAO Rui-bo;XU Tian-han;LI Wen-zhuo;ZHANG Si-qi(School of Petroleum Engineering,Northeast Petroleum University,Daqing 163318,China;Research Institute of Exploration and Development of Daqing Oilfield Company Ltd.,Daqing 163712,China)

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《应用化工》2020年第S02期133-139,共7页Applied Chemical Industry

基　　金：中国石油天然气股份有限公司重大科技专项“化学驱后提高采收率技术研究与试验”(2016E-0207)。

摘　　要：针对常规调驱体系在非均质性较强的油藏中调驱效果差的难题,合成了一种新型预交联凝胶颗粒,与三元复合体系复配成非连续相溶液,采用渗流实验与仪器测试相结合,对预交联凝胶颗粒和非连续相溶液的性能进行评价。结果表明:凝胶颗粒抗压强度高,不易破碎,且形变恢复能力较好,恢复率达到70%以上,在温度较高的条件下具有较好的热稳定性;与岩心配伍性较好,可以根据不同渗透率储层选择颗粒目数;非连续相溶液可以在碱和表面活性剂浓度较低的情况下达到超低界面张力,非连续相可在聚驱后显著提高低渗层分流能力,高、低渗层综合分流率接近50%。Aiming at the problem of the poor performance of conventional profile control and flooding systems in reservoirs with strong heterogeneity,a new type of pre-crosslinked gel particles was synthesized.We compound this gel particle with the ASP system into a discontinuous phase solution,then use the combination of seepage experiment and instrument test to evaluate its performance.The results show that the gel particles have the characteristics of high compressive strength,not easy to break,and good deformation recovery ability.The recovery rate is more than 70%.It also has good thermal stability under high-temperature conditions.It has good compatibility with the core,and the particle size can be selected according to different permeability reservoirs.The discontinuous phase solution can achieve ultra-low interfacial tension when the concentration of alkali and surfactant is low.The discontinuous phase can significantly improve the fractional flow ability of the low-permeability layer after polymer flooding.The comprehensive fractional flow rate of the high and low-permeability layers is close to 50%.

关 键 词：预交联凝胶颗粒 合成 制备 非连续相 性能评价 

分 类 号：TE357[石油与天然气工程—油气田开发工程]