摘要
随着不断的深入开发,国内大部分油田已进入特高含水后期开发阶段,剩余油分布零散复杂,储层构型已经成为控制剩余油分布的主要地质因素。为了进一步提高开发效率,掌控剩余油分布规律,对储层构型进行精细解剖,明确储层构型对剩余油分布的影响关系尤为重要。本文以储层地质学、沉积学及储层层次分析理论为指导,综合利用钻井岩芯、测井及开发动态资料,以河南双河油田437区块核三段Ⅱ油组1、2层为例,对扇三角洲前缘储层内部构型及对剩余油分布的影响进行了精细研究。结果表明:目的层段扇三角洲前缘构型可划分为7级,并且复合砂体存在4种平面组合方式;基于3种砂体边界识别方法,得出单一辫状河道砂体在垂向上的3种叠置方式,即叠加式、切叠式和独立式。在此基础上,本文探讨了储层构型对剩余油分布规律的影响,分析可知复合砂体平面组合样式和单一砂体内部韵律性以及单一砂体之间垂向叠置样式是造成剩余油富集的主要因素,为指导研究区部署剩余油挖潜方案,以及类似沉积环境下构型解剖提供参考。
With the continuous in-depth development,most of the oilfields in China have entered the later development stage of ultra-high water cut.The distribution of remaining oil is scattered and complex.Reservoir architecture has become the main geological factor controlling the distribution of remaining oil.In order to further improve the development efficiency,control the distribution law of remaining oil,conduct fine anatomy of the reservoir architecture,and clarify the relationship between the reservoir architecture and the distribution of remaining oil is particularly important.This article guided by the theory of reservoir geology,sedimentology and reservoir layer analysis,and comprehensively using the drilling core,logging and development dynamic data,the internal reservoir architecture of fan-delta front and its influence on the distribution of remaining oil were studied by taking the Hetaoyuan formation threeⅡoil group 1,2 layer in block 437 of Shuanghe oilfield,Henan Province as an example.The results show that the configuration of the fan delta front can be divided into seven levels,and the composite sand body has four planar assemblages.Based on three methods of sand body boundary identification,three vertical stacking modes of single braided channel sand body are obtained,namely stacking,cutting and stacking and independent.And based on this,this paper discusses reservoir conformation influence on residual oil distribution law.It can be seen from the analysis that compound sand body surface combination style and the single sand body between internal rhythms and single sand body vertical superimposed style is the main factor of enrichment of remaining oil,to guide the deployment of remaining oil potential in solution in the study area,and provide reference for similar sedimentary environment configuration anatomy.
作者
郑淑平
李娇娜
闫文琦
杨磊
孙明明
ZHENG Shuping;LI Jiaona;YAN Wenqi;YANG Lei;SUN Mingming(Northeast Petroleum University,Daqing 163000,Heilongjiang,China;Henan Oilfield Company No.1 Oil Production Plant,Nanyang 474780,Henan,China)
出处
《矿产勘查》
2022年第5期623-634,共12页
Mineral Exploration
关键词
扇三角洲前缘
储层构型
砂体叠置
剩余油
地质调查工程
fan delta front
reservoir configuration
superimposed sand body
residual oil
geological survey engineering
作者简介
第一作者:郑淑平,女,1998年生,在读硕士,主要研究方向为油气地球化学,E-mail:865263173@qq.com。
