北黄海盆地东部坳陷勘探突破对我国近海残留“黑色侏罗系”油气勘探的启示

doi:10.13278/j.cnki.jjuese.20180150

吉林大学学报(地球科学版) ›› 2019, Vol. 49 ›› Issue (1): 115-130.doi: 10.13278/j.cnki.jjuese.20180150

• 海洋地质与资源 • 上一篇

北黄海盆地东部坳陷勘探突破对我国近海残留“黑色侏罗系”油气勘探的启示

肖国林^1,2, 蔡来星^1,2, 郭兴伟^1,2, 董贺平^1,2, 庞玉茂³

1. 中国地质调查局青岛海洋地质研究所, 山东青岛 266071;
2. 青岛海洋科学与技术试点国家实验室海洋矿产资源评价与探测技术功能实验室, 山东青岛 266071;
3. 山东科技大学地球科学与工程学院, 山东青岛 266590

收稿日期:2018-06-11 发布日期:2019-01-18
通讯作者: 蔡来星(1985-),男,在站博士后,主要从事油气地质学方面的研究,E-mail:qingxin717717@126.com E-mail:qingxin717717@126.com
作者简介:肖国林(1962-),男,研究员,主要从事海洋石油地质研究和国家战略性油气勘探工作,E-mail:XGL253@163.com
基金资助:
国家海洋地质专项（DD20189836，DD20160147，GZH201100202）

Exploration Enlightenment on Residual “Black Jurassic” in Chinese Offshore from Exploration Breakthrough in Eastern Sag of the North Yellow Sea Basin

Xiao Guolin^1,2, Cai Laixing^1,2, Guo Xingwei^1,2, Dong Heping^1,2, Pang Yumao³

1. Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266071, Shandong, China;
2. Laboratory for Marine Mineral Resources, Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266071, Shandong, China;
3. Nanjing Center, China Geological Survey, Nanjing 210016, China

Received:2018-06-11 Published:2019-01-18
Supported by:
Supported by National Marine Geology Special Project of China (DD20189836,DD20160147,GZH201100202)

摘要/Abstract

摘要： 最新的勘探和研究证实，北黄海盆地东部坳陷发育了中、上侏罗统2套有效烃源岩并以上侏罗统为主力烃源岩层，在其供烃范围内形成了上侏罗统-下白垩统"下生上储式"和中-上侏罗统"自生自储式"2类成藏组合，取得了我国东部海域以侏罗系为唯一源岩的含油气盆地勘探突破。为进一步探索我国近海盆地残留"黑色侏罗系"的资源潜力和勘探前景，本文采用地震-地质综合解释、烃源岩地球化学分析、盆地模拟等方法，综合分析了我国近海主要盆地残留"黑色侏罗系"的分布和地球化学特征。结果表明，我国近海残留侏罗系暗色泥岩烃源岩非均质性较强，多属"中等"级别，局部发育"中等-好"、"中等-差"级别烃源岩，侏罗系烃源岩大多存在早（J₃-K₁）、晚（E₂末-N₁）2期生、排烃高峰，生烃总量达1.4×10¹¹ t，资源前景乐观，预测可形成侏罗系"自生自储式"和侏罗系-白垩系（或新生界）"下生上储式"2类源储组合。

关键词: “黑色侏罗系”, 烃源岩评价, 油气成藏组合, 北黄海盆地东部坳陷, 中国近海

Abstract: The latest exploration and research confirm that there are two sets of effective source rocks developed in the Middle and Upper Jurassic of the eastern sag in the North Yellow Sea basin, and the Upper Jurassic exists as the main source rock for oil & gas accumulation. Within the range of hydrocarbon supply, two patterns of oil & gas reservoir-forming assemblages, i.e., "lower generation and upper accumulation" in the Upper Jurassic-Lower Cretaceous and "self-generation and self-accumulation" in the Middle-Upper Jurassic, have been formed in this area, where the exploration breakthrough of petroliferous basins has been made with Jurassic as the only source rock in the eastern sea area of China. In order to further explore the resource potential and exploration prospects of the remaining "black Jurassic" in China's offshore basins, the authors analyzed their distribution characteristics and geochemical characteristics comprehensively based on seismic-geological interpretation, geochemical analysis and basin modeling. The results show that the residual Jurassic dark mudstone source rocks in China offshore are highly heterogeneous, most of them belong to medium grade source rocks, and some are "medium-good" and some are "medium-poor". The dark Jurassic source rocks in the offshore of China had two periods of hydrocarbon generation and expulsion, Late Jurassic to Early Cretaceous and Eocene to Late Miocene, with total amount of hydrocarbon generation of 1.4×10¹¹t. This provides a sufficient material basis for the formation of source-reservoir combinations including Jurassic "self-generation and self-accumulation" and Jurassic-Cretaceous (or Cenozoic) "lower generation and upper accumulation" in eastern sea basins of China, and has important practical and scientific significance for oil and gas exploration of residual "black Jurassic" in offshore basins of China.

Key words: Black Jurassic, source rock evaluation, hydrocarbon accumulation combination, Eastern Sag of North Yellow Sea basin, Chinese offshore

中图分类号:

P618.13

肖国林, 蔡来星, 郭兴伟, 董贺平, 庞玉茂. 北黄海盆地东部坳陷勘探突破对我国近海残留“黑色侏罗系”油气勘探的启示[J]. 吉林大学学报(地球科学版), 2019, 49(1): 115-130.

Xiao Guolin, Cai Laixing, Guo Xingwei, Dong Heping, Pang Yumao. Exploration Enlightenment on Residual “Black Jurassic” in Chinese Offshore from Exploration Breakthrough in Eastern Sag of the North Yellow Sea Basin[J]. Journal of Jilin University(Earth Science Edition), 2019, 49(1): 115-130.

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北黄海盆地东部坳陷勘探突破对我国近海残留“黑色侏罗系”油气勘探的启示

Exploration Enlightenment on Residual “Black Jurassic” in Chinese Offshore from Exploration Breakthrough in Eastern Sag of the North Yellow Sea Basin

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