中国石油勘探 ›› 2018, Vol. 23 ›› Issue (1): 54-61.DOI: 10.3969/j.issn.1672-7703.2018.01.006

• 勘探案例 • 上一篇    下一篇

南海近5年油气勘探进展与启示

张强, 吕福亮, 贺晓苏, 王彬, 孙国忠   

  1. 中国石油杭州地质研究院
  • 收稿日期:2016-11-17 修回日期:2017-11-30 出版日期:2018-01-15 发布日期:2018-01-04
  • 基金资助:
    国家科技重大专项“南海中建海域深水油气地质条件及目标评价”(2017ZX05026006)。

Progress and enlightenment of oil and gas exploration in the South China Sea in recent five years

Zhang Qiang, Lü Fuliang, He Xiaosu, Wang Bin, Sun Guozhong   

  1. Hangzhou Institute of Geology, PetroChina
  • Received:2016-11-17 Revised:2017-11-30 Online:2018-01-15 Published:2018-01-04
  • Supported by:
     

摘要: 采用统计学方法对南海最新收集数据进行系统分析,并对典型油气田进行解剖,同时结合南海油气地质背景,对南海周边国家近5年油气勘探进展与趋势进行了系统分析,研究发现:(1)南海新发现油气藏主要分布于南海北部珠江口盆地、琼东南盆地、莺歌海盆地和南海中南部湄公、万安、曾母和文莱沙巴等盆地;(2)以三角洲、扇三角洲砂岩为储层的构造油气藏发现数量最多,但以深水沉积体为储层的岩性油气藏累计储量最大;(3)油气主要富集于中中新统,其次为上新统与上中新统。研究结果表明:(1)深水区已逐渐成为南海下一步勘探主战场和新增储量接替区;以深水沉积体为储层的岩性油气藏和以生物礁为储层的岩性油气藏已成为南海新增储量的主要贡献者。(2)直接位于源上或源侧的中新统生物礁是南海中南部盆地最为现实的勘探目标,前古近系潜山油气藏是南海西北部重要的潜在勘探目标;差异压实岩性体与上倾尖灭体是陆坡深水区深水沉积体相关油气藏的主要圈闭类型。

 

关键词: 南海, 深水沉积, 生物礁, 潜山, 深水勘探, 曾母盆地, 莺歌海盆地

Abstract: Data collection and analysis, investigation to typical oil and gas fields, and the exploration progress and trends of neighboring countries in recent five years have been carried out using statistical methods and based on the geological background in the South China Sea. The results show that:(1) The newly discovered oil and gas reservoirs are mainly distributed in the Pearl River Mouth Basin, the Qiongdongnan Basin, the Yinggehai Basin in the northern South China sea and the Meigong Basin, Wan'an Basin, Zengmu Basin and Brunei-Sabah Basin in the central-southern South China Sea; (2) Structural reservoirs in delta and fan-delta sandstones account for the most, but lithologic reservoirs in deep-water sedimentary bodies contribute to the largest cumulative reserves; and (3) Oil and gas are mainly enriched in the Middle Miocene reservoirs, followed by the Upper Paleocene and Upper Miocene reservoirs. Specifically, the results show that:(1) Deepwater area has become the main exploration battlefield and reserve succeeding area; lithologic reservoirs accumulated in deep-water sedimentary bodies and those in organic reefs have become the main contributor to new reserves in the South China Sea. (2) The Miocene organic reefs directly on source or source side are the most realistic exploration target in the central-southern basins; the Pre-Paleogene buried hill reservoir is an important potential exploration target in the northwestern South China Sea; and the lithologic bodies formed by differential compaction and the updip pinchout bodies are main traps for reservoirs associated with deep-water sediments in the continental slope.

Key words: South China Sea, deep-water sediments, organic reefs, buried hills, deep-water exploration, Zengmu Basin, Yinggehai Basin

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