中国石油勘探 ›› 2017, Vol. 22 ›› Issue (2): 13-23.DOI: 10.3969/j.issn.1672-7703.2017.02.002

• 勘探管理 • 上一篇    下一篇

断陷湖盆斜坡区油气富集理论与勘探实践——以黄骅坳陷古近系为例

赵贤正1, 周立宏1, 蒲秀刚1, 肖敦清1, 姜文亚1, 韩文中1,2, 陈长伟1, 邹磊落1, 郭淑文1   

  1. 1. 中国石油大港油田公司;
    2. 中国石油大学(华东)
  • 收稿日期:2016-11-29 修回日期:2017-02-17 出版日期:2017-03-10 发布日期:2017-03-10
  • 作者简介:赵贤正(1962-),男,浙江义乌人,博士,2005 年毕业于中国石油大学(北京),教授级高级工程师,李四光地质科学奖、孙越崎能源大奖获得者,现任中国石油大港油田公司总经理,主要从事油气勘探与开发综合研究和管理工作。地址:天津市滨海新区大港油田三号院,邮政编码:300280。E-mail:xzzhao@petrochina.com.cn
  • 基金资助:
    国家科技重大专项“大型油气田及煤层气开发”(2016ZX05006);中国石油天然气股份有限公司重大科技专项“大港油区大油气田勘探开发关键技术研究” (2014E-06-01)。

Hydrocarbon enrichment theory and exploration practice in the slope of fault lake basin-a case study of Paleogene in Huanghua depression

Zhao Xianzheng1, Zhou Lihong1, Pu Xiugang1, Xiao Dunqing1, Jiang Wenya1, Han Wenzhong1,2, Chen Changwei1, Zou Leiluo1, Guo Shuwen1   

  1. 1. PetroChina Dagang Oilfeld Company;
    2. China University of Petroleum (East China)
  • Received:2016-11-29 Revised:2017-02-17 Online:2017-03-10 Published:2017-03-10
  • Contact: 10.3969/j.issn.1672-7703.2017.02.002

摘要: 斜坡区是中国东部断陷湖盆的主要构造单元,是渤海湾盆地重要的油气规模增储区带。在斜坡区多年综合研究和勘探实践的基础上,提出了斜坡区(大型缓坡带)具有高、中、低分异性的新认识,即高、中、低斜坡在沉降速率、沉积相序、储层物性、生烃演化、地层压力、流体性质、油气藏类型等七方面的地质差异性,形成了断陷湖盆斜坡区优势相油气富集理论,其理论内涵为:高斜坡沟槽控砂,优势运移汇聚相富集;中斜坡坡折控砂,优势构造岩性相富集;低斜坡远扇控砂,优势源储耦合相富集。以此理论为指导,开展斜坡区精细勘探与钻探部署,斜坡区地层岩性油气藏勘探取得重要勘探成果,近5年来新增三级石油地质储量超过3×108t,发现了4个千万吨级效益建产区块和3个亿吨级规模增储区,证实了斜坡区优势相油气富集理论在规模效益增储及高效建产区块中的重要指导意义。

关键词: 断陷湖盆, 缓坡带, 高-中-低分异, 优势相富集, 勘探实践

Abstract: Slope is a major structural unit of fault lake basin in eastern China, and also an important zone in the Bohai Bay Basin for increasing oil and gas reserves. Through years of comprehensive studies and exploration practices in slopes, it is newly proposed that the slopes (or large gentle slopes) show a high-moderate-low differentiation. To be specifc, the geologic differentiation of high, moderate and low slopes in subsidence rate, sedimentary sequence, reservoir physical property, hydrocarbon generation and evolution, formation pressure, fluid property and reservoir type results in the theory of hydrocarbon enrichment in dominant facies belts in slope of fault lake basin. Essentially, in high slope, channel/trough controls sand, and oil and gas enrich in dominant migration and preservation facies. In moderate slope, slope break controls sand, and oil and gas enrich in dominant structural-lithologic facies. In low slope, distal fan controls sand, and oil and gas enrich in dominant source-reservoir coupling facies. According to this theory, fne exploration and drilling operations have been carried out in the slopes. As a result, remarkable achievements were made in stratigraphic-lithologic reservoirs in the slope zone. During the past fve years, additional 3P oil reserves exceeded 3×108t, and four 10 million-ton class proftable productivity construction blocks and three 100 million-ton class blocks with the potential of signifcant reserves increased. Thus, it is demonstrated that the theory of hydrocarbon enrichment in dominant facies belts in slope plays an important role in directing the large-scale proftable reserves increase and high effcient productivity construction.

Key words: fault lake basin, gentle slope, high-moderate-low differentiation, dominant facies enrichment, exploration practice

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