石油与天然气地质 ›› 2022, Vol. 43 ›› Issue (3): 499-513.doi: 10.11743/ogg20220302

• 油气地质 • 上一篇    下一篇

成熟探区“勘探层单元”研究及其在渤海湾盆地东营凹陷的应用

宋明水1(), 王永诗2, 王学军2, 郝雪峰2, 李友强2, 陈冬霞3, 王福伟3, 王翘楚3, 石学斌3, 邹易3   

  1. 1.中国石化 石油工程地球物理有限公司,北京 100020
    2.中国石化 胜利油田分公司 勘探开发研究院,山东 东营 257015
    3.中国石油大学(北京) 油气资源与探测国家重点实验室,北京 102249
  • 收稿日期:2021-07-14 修回日期:2022-03-20 出版日期:2022-06-01 发布日期:2022-05-06
  • 作者简介:宋明水(1964—),男,博士、教授级高级工程师,地球物理研究和管理。E?mail: Songs.osgc@sinopec.com
  • 基金资助:
    国家科技重大专项(2016ZX05006)

Research of “synthem units of exploration” in mature exploration area and its application in the Dongying Sag, Bohai Bay Basin

Mingshui Song1(), Yongshi Wang2, Xuejun Wang2, Xuefeng Hao2, Youqiang Li2, Dongxia Chen3, Fuwei Wang3, Qiaochu Wang3, Xuebin Shi3, Yi Zou3   

  1. 1.SINOPEC Geophysics Co. ,Ltd. ,Beijing 100020,China
    2.Research Institute of Exploration and Development of Shengli Oilfield Branch Company,SINOPEC,Dongying,Shandong 257015,China
    3.State Key laboratory of Petroleum Resources and Prospecting,China University of Petroleum (Beijing),Beijing 102249,China
  • Received:2021-07-14 Revised:2022-03-20 Online:2022-06-01 Published:2022-05-06

摘要:

中国东部成熟探区已经整体达到高勘探程度阶段,选取适合于成熟探区精细勘探的评价单元,对于降低勘探风险、实现高效勘探具有重要意义。“勘探层单元”是基于当前地质规律认识与勘探精细程度的成藏-地质评价方法,主要研究内容包括层单元界定与划分、层单元剩余资源潜力评价、层单元油气成藏规律分析和成藏模式、层单元优选与分类评价以及勘探部署。“勘探层单元”继承了系统论的思想,是勘探区带研究中的相控论和带控论的延伸和发展。它提出了一个将油气系统、油气聚集区带、油气藏多个层次相统一的综合研究体系,其研究方法论体现了整体与个体的统一、系统性与差异性的统一、系统研究与精细表征的统一、预测性与实效性的统一。依据“勘探层单元”的研究思路,将渤海湾盆地东营凹陷含油气层系划分为9套勘探层系、193个勘探层单元,在综合考虑成藏过程和成藏特征的差异性及相似性的基础之上,将勘探层单元总结为20种类型,实现了地质认识与部署思路的精细化和立体化;开展基于“勘探层单元”的剩余资源精细劈分和勘探目标效益评价,明确了东营凹陷古近系沙河街组四段上亚段-东营组、新近系馆陶组-明化镇组、古生界潜山、古近系孔店组-沙四段下亚段等4大领域22个最优勘探层单元为近、中期增储和突破的重要方向,为高效勘探提供依据。

关键词: 资源潜力, 成藏模式, 勘探层单元, 成熟探区, 断陷盆地, 剩余油气资源, 东营凹陷, 渤海湾盆地

Abstract:

The explored areas in eastern China have reached high exploration maturity as a whole. Selecting evaluation units suitable for fine exploration in these areas is of great significance to reducing exploration risks and achieving efficient exploration. As a hydrocarbon accumulation-geological evaluation method suitable for current geological understanding and fine exploration, research of “synthem units of exploration” mainly includes the definition and division of synthem units of exploration, the evaluation of remaining resource potential, the analysis of oil and gas accumulation patterns and accumulation modes, the selection and classification evaluation, and related exploration deployment. The concept of synthem unit of exploration inheriting the thought of system theory, is an extension and development of sedimentary facies-control theory and structural zone-control theory in hydrocarbon play study. It puts forward a comprehensive research system integrating petroleum system, play and oil and gas reservoir, featuring research methodology embodying the unity of the whole and individual, the unity of systematization and heterogeneity, the unity of systematic research and fine characterization, and the unity of predictability and effectiveness. According to the concept, the 193 synthem units of exploration are recognized in 9 exploration target zones in Dongying Sag and classified into 20 types, comprehensively considering the differences and similarities of reservoir-forming processes and characteristics. Thereby, fine, multi-dimensional geological understanding and exploration deployment have been achieved. Fine assessment of the remaining resource potentials and benefit evaluation of exploration targets are carried out based on the concept of exploration structural-layer unit, making it clear that there are 22 optimal exploration structural-layer units in 4 domains of interest in Dongying Sag, including the upper fourth member of Shahejie Formation-Dongying Formation of the Paleogene, the Neogene Guantao Formation-Minghuazhen Formation, the Paleozoic buried hill, and the Paleogene Kongdian Formation-the lower fourth member of Shahejie Formation. These are important targets for reserve growth and exploration breakthrough in the near and medium term, serving as a basis for efficient exploration.

Key words: resource potential, hydrocarbon accumulation mode, synthem unit of exploration, mature exploration area, faulted basin, residual oil and gas resources, Dongying Sag, Bohai Bay Basin

中图分类号: