生屑灰岩油藏颗粒伤害与孔喉结构配伍性  

Compatibility of particle damage and pore throat structure in bioclastic limestone reservoir

作　　者：汪周华[1] 赵华臻 朱光亚[3] 李茜瑶 郭平[1] 景明强 WANG Zhouhua;ZHAO Huazhen;ZHU Guangya;LI Qianyao;GUO Ping;JING Mingqiang(State Key Laboratory for Oil&Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China;Binnan Oil Production Plant,Shengli Oilfield Company,SINOPEC,Binzhou 256600,China;Department of Middle East,Research Institute of Petroleum Exploration&Development,PetroChina,Beijing 100083,China)

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]中国石化胜利油田分公司滨南采油厂,山东滨州256600 [3]中国石油勘探开发研究院中东所,北京100083

出　　处：《断块油气田》2021年第1期124-128,共5页Fault-Block Oil & Gas Field

基　　金：国家科技重大专项课题“伊拉克大型生物碎屑灰岩油藏注水开发关键技术研究与应用”(2017ZX05030-001)。

摘　　要：中东H油田Mishrif组属于典型的孔隙型生物碎屑灰岩储层,水驱是目前主要的开发方式,但注入水中固相颗粒的质量浓度及粒径严重影响其开发效果。为了弄清注入水对储层物性的影响,并为后期注水开发的水质要求及调整方案设计提供依据,文中基于恒速压汞实验及颗粒运移实验,研究了影响H油田Mishrif组储层渗流能力的主要微观因素以及注入水中悬浮物颗粒质量浓度与粒径的上限,并且分析了悬浮物颗粒粒径与喉道的配伍性。研究结果表明,喉道半径及分布是影响储层渗流能力的主要微观因素。当注入水中悬浮物颗粒粒径为5μm时,颗粒质量浓度的上限为5 mg/L;当悬浮物颗粒质量浓度为3 mg/L时,颗粒粒径的上限为10μm,接近于渗透率贡献峰值处的喉道半径。The Mishrif Formation of H Oilfield in the Middle East is a typical porous bioclastic limestone reservoir.Water drive is the main development mode at present.However,the concentration and size of solid particles in injected water seriously affect the development effect of water drive.In order to understand the influence of injected water on reservoir physical parameters and provide basic parameters for water quality requirement and adjustment scheme design of later water-flooding development,based on the experiments of constant-rate mercury injection and suspended particles migration during water-flooding,this paper studies the main micro factors affecting the permeability of the Mishrif Formation in H Oilfield,as well as the upper limit of the concentration and size of suspended particles in the injected water.The compatibility between the particle size of suspension and throat was analyzed.The results show that the pore size and distribution of the throat are the main micro factors affecting the permeability of the formation.When the particle size of suspended solids in the injected water is 5μm,the upper limit of particle concentration is 5 mg/L.When the concentration of suspended particles in the injected water is 3 mg/L,the upper limit of particle size is 10μm,which is close to the throat radius at the peak of permeability contribution.

关 键 词：生屑灰岩 恒速压汞 悬浮物颗粒 喉道半径分布 配伍性 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]