中高渗油藏水驱开发储层特征变化——以南堡凹陷H油田为例  

Reservoir characteristics changes during water flooding development in medium-high permeability reservoirs——by taking H Oilfield in Nanbao Sag as an example

作　　者：冯晗 曲丽丽[2] 张旭光[1] 吴章宇 李彦泽 FENG Han;QU Lili;ZHANG Xuguang;WU Zhangyu;LI Yanze(Exploration&Development Department of Jidong Oilfield Company,PetroChina,Tangshan 063000,Hebei,China;Nanpu Oilfield Operation Area of Jidong Oilfield Company,PetroChina,Tanghai 063200,Hebei,China)

机构地区：[1]中国石油冀东油田公司勘探开发部,河北唐山063000 [2]中国石油冀东油田公司南堡作业区,河北唐山063200

出　　处：《石油地质与工程》2023年第5期59-64,共6页Petroleum Geology and Engineering

摘　　要：为得到中高渗油藏长期水驱后储层特征变化规律,同时了解水驱效率变化原因,综合利用岩心实验资料和解释数据,对南堡凹陷H油田储层物性、孔隙结构、黏土矿物含量、储层润湿性及相渗变化进行对比分析,探讨储层参数变化机理。结果表明:南堡凹陷H油田黏土矿物以高岭石为主,经过水驱开发后,高岭石相对含量减少,伊蒙混层相对含量增多;储层孔隙结构趋于复杂,最大孔喉半径和平均孔喉半径均增大,喉道分选程度降低;储层物性整体变好,但呈“两极分化”趋势,孔渗高低两端占比增大;受储层高渗条带影响,长期水驱开发导致吸水厚度下降,水驱波及体积降低。研究成果可为油田注水开发、扩大水驱波及系数、优化开发调整方案提供借鉴。To get change rules of reservoir characteristics after long-term water flooding in medium-high permeability reservoirs and understand the reasons for water flooding efficiency changes,by use of core experimental and interpretation data,physical properties,pore structure,clay mineral content,reservoir wettability and relative permeability changes of H Oilfield in Nanpu sag are compared and analyzed,and the mechanism of reservoir parameter changes is discussed.The results show that the clay mineral of H Oilfield is mainly of Kaolinite.After water flooding development,the relative content of Kaolinite decreases and the relative content of Yimeng mixed layer increases.The pore structure tends to be complex,with both the maximum and average pore throat radius increasing,and the degree of throat sorting decreasing.The physical properties become better,but show a trend of"polarization".Affected by high permeability zones,long-term water flooding development has led to a decrease in water absorption thickness and a decrease in water flooding swept volume.The results can provide a good reference for water injection development,with expanded waterflooding sweep efficiency and optimized development adjustment plans.

关 键 词：南堡凹陷 中高渗油藏 水淹变化机理 水驱开发 物性参数 

分 类 号：TE341[石油与天然气工程—油气田开发工程]