元城油田元东区精细油藏描述

Fine Reservoir Description of Yuandong District of Yuancheng Oilfield

通过元城油田开发中后期的精细油藏描述研究，认为元城油田元东区延10 1油层组可进一步划分为3个小层。其沉积相为辫状河沉积，储层具有层内非均质性强、平面非均质性受控于砂体展布、隔层对底水上升起到阻挡作用特征。数值模拟分析认为，元城油田元东区的后期开发调整应以局部区域补钻水平井进行产量接替为主．在剩余油富集区部署水平井可大幅度提高单井产量。

It is considered that, through the study of fine reservoir description during mid-late development of Yuancheng oilfield, YanlOl oil reservoir group of Yuandong （Eastern） district of Yuancheng oilfield may be further divided into 3 small layers. The sedimentary facies is braided river sediments. The reservoirs have features of strong heterogeneity within them, plane heterogeneity controlled by the sand body distribution, the barrier layer playing a role of blocking on the bottom water rising up. Through the use of numerical simulation analysis, the authors think the late stage of development adjustment of the Eastern Yuancheng oilfield should be based on drilling horizontal wells in the local areas to replenish production. The deployment of horizontal wells in residual oil-rich regions can substantially increase the individual well production.