西南石油大学学报(自然科学版) ›› 2018, Vol. 40 ›› Issue (2): 57-66.DOI: 10.11885/j.issn.1674-5086.2016.06.26.03

• 地质勘探 • 上一篇    下一篇

琼东南盆地深水区宝岛凹陷3D输导体系评价

江汝锋, 郭明刚, 朱继田, 周杰, 向远高   

  1. 中海石油(中国)有限公司湛江分公司, 广东 湛江 524057
  • 收稿日期:2016-06-26 出版日期:2018-04-01 发布日期:2018-04-01
  • 通讯作者: 江汝锋,E-mail:jiangrf2@cnooc.com.cn
  • 作者简介:江汝锋,1988年生,男,汉族,广东清远人,硕士,主要从事南海西部油气地质综合研究。E-mail:jiangrf2@cnooc.com.cn;郭明刚,1974年生,男,汉族,四川威远人,工程师,主要从事深水区油气成藏综合研究工作。E-mail:guomg@cnooc.com.cn;朱继田,1974年生,男,汉族,湖南娄底人,高级工程师,主要从事石油地质研究工作。E-mail:zhujt@cnooc.com.cn;周杰,1988年生,男,汉族,湖北钟祥人,硕士,主要从事深水油气成藏规律研究工作。E-mail:zhoujie14@cnooc.com.cn;向远高,1988年生,男,土家族,湖北巴东人,硕士,主要从事盆地构造分析与油气资源评价研究工作。E-mail:xiangyg@cnooc.com.cn
  • 基金资助:
    国家科技重大专项(2016ZX05026-002)

Evaluation of 3D Hydrocarbon Migration System in Baodao Sag in the Deep-water Area of Qiongdongnan Basin

JIANG Rufeng, GUO Minggang, ZHU Jitian, ZHOU Jie, XIANG Yuangao   

  1. Zhanjiang Branch of China National Offshore Oil Corporation(CNOOC) Limited, Zhanjiang, Guangdong 524057, China
  • Received:2016-06-26 Online:2018-04-01 Published:2018-04-01

摘要: 为查明宝岛凹陷优势运移通道和运移方向,以钻井和地震资料为基础,采用地震解释、古构造恢复、油气运聚模拟、3D地质建模等技术手段,在宝岛凹陷识别出了4级4组断裂、4套骨架砂体和4条主构造脊,建立了宝岛凹陷烃源岩-输导体系-储层-圈闭空间格架,划分了T型、阶梯型、受限网毯型3种输导体系,南部断阶带和东北断阶带为阶梯型输导体系,松南低凸起和北部斜坡带为受限网毯型输导体系。运移模拟表明南部断阶带、东北断阶带、松南低凸起前排构造带都是优势的运移方向,垂向+侧向运移为主。区带优选表明南部断阶带为最有利区带,具有"近源、断-砂-脊阶梯型输导、海底扇和扇三角洲储集、断块岩性圈闭"配置特征。

关键词: 地质建模, 输导体系, 宝岛凹陷, 深水区, 琼东南盆地, 南海西部

Abstract: The dominant migration path and migration direction of the Baodao Sag, were identified based on drilling and seismic data using seismic interpretation, paleostructure restoration, oil and gas migration and accumulation modeling, 3D geological modeling, and other technological approaches. Four faults with four levels, four sets of framework sand bodies, and four main structure ridges were identified in the Baodao Sag. The system of source rock-migration system-reservoir-trap in the Baodao Sag has been established, and the migration systems have been classified into three types:the T type, ladder type, and restricted meshwork-carpet type. The southern and northeastern step-fault zones are characterized by ladder type migration systems, while the Songnan low uplift and northern slope zones are characterized by restricted meshwork-carpet type systems. The migration simulation shows that the southern step-fault zone, northeastern step-fault zone, and Songnan low uplift front tectonic zone are the dominant migration directions, which are mainly characterized by vertical and lateral migration. The selection of favorable zones indicates that the southern step-fault zone is the most favorable zone, which has the configuration features of "near source, fault-sand-ridge ladder type migration, submarine fan and fan delta reservoir, and fault block-lithologic trap."

Key words: geological modeling, migration system, Baodao Sag, deep-water area, Qiongdongnan Basin, western South China Sea

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