部分支化预交联凝胶颗粒在多孔介质中的运移规律  

MIGRATION LAW OF BRANCHED-PREFORMED PARTICLE GEL IN POROUS MEDIA

作　　者：赖南君[1,2] 陈姝芳 祝仰文 徐辉[3] 唐雷[1] Lai Nanjun;Chen Shufang;Zhu Yangwen;Xu Hui;Tang Lei(School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 616500,Sichuan,China;Sichuan Provincial Key Laboratory of Applied Chemistry for Oil and Gas Fields,Chengdu 616500,Sichuan,China;Research Institute of Exploration and Development of Sinopec Shengli Oilfield Company,Dongying 257015,Shandong,China)

机构地区：[1]西南石油大学化学化工学院,四川成都616500 [2]油气田应用化学四川省重点实验室,四川成都616500 [3]中国石化胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《精细石油化工》2021年第3期28-34,共7页Speciality Petrochemicals

基　　金：国家自然科学基金51674208;四川省应用基础研究项目2018JY0515;南充市科技局市校科技战略合作专项NC17SY4017;油气田应用化学四川省重点实验室开放基金YQKF202010。

摘　　要：在考察部分支化预交联凝胶颗粒(B-PPG)增黏性、流变性以及抗剪切性的基础之上,分别研究了B-PPG溶液在单管渗流模型和双管串联渗流模型中的运移规律,并自制微观玻璃刻蚀模型进一步验证了其在多孔介质中的运移规律。结果表明:B-PPG溶液的增黏性能较好,溶液的表观黏度随剪切速率的增加而降低;溶液以储能模量为主,且具有一定的抗剪切稳定性;B-PPG溶液在多孔介质以"累积封堵→压力升高→变形运移"交替堵驱的方式运移,溶液中的黏弹性颗粒在运移时可在外力挤压下变形通过孔喉,从而实现深部运移;微观玻璃刻蚀模型实验表明B-PPG溶液具有较好的均衡驱替、扩大波及体积的能力。On the basis of studying the viscosity,rheology properties and shear resistance of the branched-preformed particle gel(B-PPG),the migration laws of the B-PPG solution in the single-pipe percolation model and the double-pipe series percolation model were studied respectively.The erosion model further verified its migration law in porous media.The results show that the B-PPG solution has good viscosity increasingproperty.The apparent viscosity of the solution decreases with the increase of the shear rate.The solution is dominated by the storage modulus and has certain shear stability.The B-PPG solution migrates in the porous media in the manner of“accumulative plugging→pressureincrease→deformation and migration”alternately.The viscoelastic particles in the solution can be deformed through the pore throat under the extrusion force during migration,so as to realize deep migration.Microscopic glass etching model experiments show that B-PPG solution has better ability to balancethe displacement and expand the swept volume.

关 键 词：部分支化预交联凝胶颗粒 流变性 调驱能力 流动特征 运移规律 

分 类 号：TE39[石油与天然气工程—油气田开发工程]