疏水缔合聚合物储层动态滞留规律及其影响因素——以渤海A油田油藏条件为例  

Dynamic Retention Law of Hydrophobically Associating Polymer in Reservoir and Its Influencing Factors:Taking Reservoir Conditions in Bohai A Oilfield as an Example

作　　者：李强[1,2] 康晓东 姜维东[3] 谢坤 卢祥国 郐婧文[4] LI Qiang;KANG Xiaodong;JIANG Weidong;XIE Kun;LU Xiangguo;KUAI Jingwen(National Key Laboratory of Efficient Development of Offshore Oil,Beijing 100028,China;Research Institute,CNOOC,Beijing 100028,China;CNOOC Limited,Beijing 100028,China;Key Laboratory of Education Ministry for Enhanced Oil Recovery,Northeast Petroleum University,Daqing 163318,Heilongjiang,China)

机构地区：[1]海洋石油高效开发国家重点实验室,北京100028 [2]中海油研究总院,北京100028 [3]中海石油有限公司,北京100028 [4]东北石油大学提高采收率重点实验室,黑龙江大庆163318

出　　处：《西安石油大学学报（自然科学版）》2018年第5期90-94,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家973课题"海底资源开采的关键力学问题研究"(2012CB724205);黑龙江省东北石油大学研究生创新科研重点项目"LD10-1油田化学驱注入工艺优化研究"(YJSCX2017-007NEPU)

摘　　要：以A油田储层特征和流体性质为研究对象,开展了疏水缔合聚合物驱油体系在储层中动态滞留规律及其影响因素研究。结果表明,疏水缔合聚合物动态滞留量与聚合物注入量、注入速度以及聚合物分子间缔合程度密切相关。随着注入速度的增加,聚合物分子取向能力增强,得以进入空间尺寸更小的岩心孔隙,疏水缔合聚合物动态滞留量增加,但受配伍性的影响,聚合物分子因捕集作用产生的滞留量占总滞留量的比例随之增加。随着疏水缔合聚合物分子间缔合作用减弱,聚合物分子聚集体尺寸与岩心孔喉尺寸间的配伍性变好,聚合物分子发生"多分子层"吸附概率也随之降低,二者综合作用造成动态滞留量降低。Taking the reservoir characteristics and fluid properties of A oilfield as the research objects,the dynamic retention law of hydrophobic association polymer flooding system in the reservoir and its influencing factors are studied.It is shown that the dynamic retention of hydrophobically associating polymer is closely related to polymer injection volume,injection rate and the association degree of polymer molecules.With the increase of the injection rate,the orientation performance of polymer molecules is enhanced,which makes the polymer molecules enter smaller core pores and increases the dynamic retention of hydrophobically associating polymer in core,the proportion of the polymer molecule retention produced by trapping in the total retention is increasing.With the weakening of the intermolecular association of hydrophobically associating polymer,the matching between the size of polymer aggregates and the size of core pore throat becomes better,and the probability of the"multi molecular layer"adsorption of polymer molecules also decreases,and the comprehensive effect of the two causes the decrease of dynamic retention.

关 键 词：疏水缔合聚合物 动态滞留 机理分析 渤海油田 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]