黄骅凹陷北大港油田唐家河开发区东三段储层精细描述

RESERVOIR CHARACTERIZATION OF DONG Ⅲ FORMATION, TANGJIAHE DEVELOPING AREA OF BEIDAGANG OILFIELD, HUANGHUA DEPRESSION

任宝生 芦凤明

REN Bao-sheng LU Feng-ming

中国石油, 大港油田公司, 研究中心, 天津, 300280

Research Centre, Dagang Oilfield, CNPC, Tianjin 300280, China

该文针对油田开发过程中所暴露出的主要矛盾和油田生产急待解决的地质问题,用高分辨率层序地层对比、微构造研究、细分沉积微相、流动单元研究、注水后储渗参数变化研究、数值模拟等技术对主力油组东三段储层进行了精细描述。纵向上将东三段细分为10个时间地层单元、25个单砂体,将其三角洲沉积划分为4种微相类型。通过对微观孔隙结构、渗流屏障和连通体的研究,对孔隙结构和流动单元进行了划分,并研究了储层的非均质性以及注水后储渗参数的变化。最后综合各类研究成果提出了剩余油分布规律,结合生产动态提出了有效的调整方案,经实施取得了较好的经济效益。

Aimed at the main contradictions in oilfield development and the geological problems remaining to be resolved in oilfield production, this article describes the reservoir characteristics of Dong Ⅲ formation, through high-distinguish sequence correlation, microstructure research, microfacies division, flow unit research, permeability parameter changes after water flooding, and numerical simulatlon, etc. Dong Ⅲ formation is vertically subdivided into 10 time-strata units and 25 individual sand bodies. Through the research on micropore structure, percolation screen and interconnection, pore structure and flow units are subdivided. Reservoir heterogeneity and changes of permeability parameters are also studied. Eventually, the distribution pattern of residual oil is put forward based on the research accomplishments. Effective adjusting project is made combined with production development, and has gained economic benefit in field testing.

https://doi.org/10.11781/sysydz200401058