湖相页岩油有利甜点区优选方法及应用——以渤海湾盆地东营凹陷沙河街组为例

doi:10.11743/ogg20190618

石油与天然气地质 ›› 2019, Vol. 40 ›› Issue (6): 1339-1350.doi: 10.11743/ogg20190618

湖相页岩油有利甜点区优选方法及应用——以渤海湾盆地东营凹陷沙河街组为例

张鹏飞^1,2, 卢双舫², 李俊乾², 薛海涛², 李文镖², 张宇², 王思远², 冯文俊²

1. 山东科技大学地球科学与工程学院, 山东青岛 266590;
2. 中国石油大学(华东) 地球科学与技术学院, 山东青岛 266580

收稿日期:2018-11-29 修回日期:2019-08-02 出版日期:2019-12-28 发布日期:2019-10-15
通讯作者: 卢双舫(1962-),男,博士、教授,油气地质学、地球化学以及非常规油气地质学。E-mail:lushuangfang@.upc.edu.cn。 E-mail:lushuangfang@.upc.edu.cn
第一作者简介:张鹏飞(1990-),男,博士、讲师,非常规油气成因机理与分布预测。E-mail:zhangpengfeiupc@163.com。
基金项目:
国家自然科学基金青年基金项目（41602131，41672130）。

Identification method of sweet spot zone in lacustrine shale oil reservoir and its application: A case study of the Shahejie Formation in Dongying Sag,Bohai Bay Basin

Zhang Pengfei^1,2, Lu Shuangfang², Li Junqian², Xue Haitao², Li Wenbiao², Zhang Yu², Wang Siyuan², Feng Wenjun²

1. College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China;
2. School of Geosciences, China University of Petroleum(East China), Qingdao, Shandong 266580, China

Received:2018-11-29 Revised:2019-08-02 Online:2019-12-28 Published:2019-10-15

摘要/Abstract

摘要： 页岩油有利目标区既是页岩油资源甜点区、物性甜点区，又是工程甜点区，因此寻找表征页岩油资源甜点、物性甜点及工程甜点的主地质参数，是建立页岩油有利区优选方法的关键。建立了一种基于主地质参数的页岩油有利区优选综合定量评价方法：①以游离油量、渗透率和杨氏模量为主地质参数并作为评价指标，建立权重评价值函数；②以主地质参数权重评价值乘积构建综合权重因子，确定页岩油勘探开发有利层、低效层和无效层综合权重因子分布范围；③确定页岩油勘探开发有利层系及有利区分布。将该方法应用于渤海湾盆地东营凹陷，评价了27口井沙河街组三段下亚段和沙河街组四段上亚段页岩油层系综合权重因子，预测出页岩油勘探开发有利层系及有利区分布范围，研究结果对东营凹陷页岩油勘探开发具有一定的参考意义。

关键词: 主地质参数, 游离油量, 渗透率, 杨氏模量, 页岩油有利区, 东营凹陷, 渤海湾盆地

Abstract: The favorable target zone of shale oil reservoir is the overlapping area of resource sweet spot,physical property sweet spot and engineering sweet spot.To find out the primary geological parameters that may be applied to characterize the three kinds of sweet spots is the key to identifying favorable shale oil target zones.In the study,we propose a comprehensive quantitative method to identify favorable shale oil target zones based on major geologic parameters.First,the primary geological parameters including free oil content,permeability and Young modulus are chosen to establish a weighting evaluation function.Second,a comprehensive weighting factor is constructed by using the weighting evaluation value of primary geological parameters,to define the distribution of comprehensive weighting factors of the favorable,low-efficiency and ineffective layers in shale oil exploration.Third,the favorable target layers and zones of shale oil is thereby mapped.The method has been successfully applied to evaluate the comprehensive weighting factors of the shale oil sequence in 27 wells in the lower sub-member of the 3rd member (Es^3L) and the upper sub-member of the 4th member (Es^4U) of the Shahejie Formation,Dongying Sag,Bohai Bay Basin,and to map favorable layers and zones for shale oil exploration.The result is of certain referential meaning to the exploration and development of shale oil in the Dongying Sag.

Key words: primary geological parameter, free oil content, permeability, Young modulus, favorable target zone of shale oil, Dongying Sag, Bohai Bay Basin

中图分类号:

TE122.3

张鹏飞,卢双舫,李俊乾,等. 湖相页岩油有利甜点区优选方法及应用——以渤海湾盆地东营凹陷沙河街组为例[J]. 石油与天然气地质, 2019, 40(6): 1339-1350. doi: 10.11743/ogg20190618 Zhang Pengfei,Lu Shuangfang,Li Junqian,et al. Identification method of sweet spot zone in lacustrine shale oil reservoir and its application: A case study of the Shahejie Formation in Dongying Sag,Bohai Bay Basin[J]. Oil & Gas Geology, 2019, 40(6): 1339-1350. doi: 10.11743/ogg20190618

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湖相页岩油有利甜点区优选方法及应用——以渤海湾盆地东营凹陷沙河街组为例

Identification method of sweet spot zone in lacustrine shale oil reservoir and its application: A case study of the Shahejie Formation in Dongying Sag,Bohai Bay Basin

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