永宁油田侏罗系延8差薄油层成因分析与测井识别
Genesis Analysis and Logging Identification of Jurassic Yan 8 Poor Thin Oil Layer in Yongning Oilfield
郭梦炎 1张创 1王凤琴 2薛刚 1汪立1
作者信息
- 1. 延长油田股份有限公司志丹采油厂,陕西 延安 717500
- 2. 西安石油大学 地球科学与工程学院,陕西 西安 710065;陕西省油气成藏地质学重点实验室,陕西 西安 710065
- 折叠
摘要
为了明确永宁油田侏罗系延 8 差薄油层成因,论文综合钻井、测井、试油试采、分析化验等资料开展了延 8 差薄油层成因分析研究.结果表明,永宁油田侏罗系延 8 差薄油层成因主要是在沉积微相控制基础上,受构造及"储运保"条件等复合因素控制形成的有利储集差薄油层.具体表现为延 8 差薄油层以河道砂体夹层发育区、构造高部位及上覆地层良好的盖层区域聚集成藏为主.同时针对研究区差薄油层特征,确定了通过测井二次解释进行上下油层复合因素对比识别法,并建立了延 8 差薄油层识别图版,其识别结果与试油结果符合率在 95%以上.
Abstract
In order to determine the genesis of Jurassic Yan 8 poor thin oil layer in Yongning oilfield,based on the data of drilling,logging,oil test and production,analysis and laboratory analysis,this paper has carried out a genetic analysis of the thin oil layer with a delay of Yan 8 difference.The results show that the formation of Jurassic Yan8 differential thin oil layer in Yongning oilfield is mainly a favorable reservoir poor thin oil layer controlled by the combination of factors such as the sedimentary microfacies and the conditions of storage and transportation.Specifically,the Yan 8 poor thin oil layer is mainly concentrated in the development area of riverway sand-body interlayer,the high part of structure and the good cover layer area of overlying strata.At the same time,according to the characteristics of the poor thin reservoir in the study area,a method to identify the combination factors of upper and lower oil reservoirs by logging secondary interpretation is established,and the identification plate of the thin oil reservoir with a delay of Yan 8 poor is established.The identification results are in good agreement with the oil test results.
关键词
永宁油田/延8/差薄油层/成因/识别方法Key words
Yongning oilfield/Yan 8/poor thin reservoir/the cause of formation/identification method引用本文复制引用
基金项目
延长石油科研项目(ycsy2021ky-B-15-2-1)
出版年
2024
国家科技期刊平台
NSTL
万方数据