石油学报 ›› 2010, Vol. 31 ›› Issue (5): 723-728.DOI: 10.7623/syxb201005004

• 地质勘探 • 上一篇    下一篇

前陆盆地勘探领域三个潜在的油气接替区

郑  民 1  贾承造 2  冯志强 3  李小地 1  瞿  辉 1  梁英波 1   

  1. 1 中国石油勘探开发研究院  北京  100083; 2中国石油学会  北京  100724;  3 中国石油大庆油田有限责任公司  黑龙江大庆  163712
  • 收稿日期:2010-01-06 修回日期:2010-03-08 出版日期:2010-09-25 发布日期:2010-11-30
  • 通讯作者: 郑 民
  • 作者简介:郑 民,男,1979年8月生,2008年获中国科学院兰州地质研究所博士学位,现在中国石油勘探开发研究院油气资源规划所工作,主要从事含油气盆地构造解析与石油地质综合研究工作。
  • 基金资助:

    国家科技重大专项(2008ZX05043)“中国大型油气田及煤层气勘探开发技术发展战略”和中国博士后特别资助基金(200902115)部分成果。

Potential replacement regions of hydrocarbon reserves in exploration domain of foreland basins

ZHENG Min 1  JIA Chengzao 2  FENG Zhiqiang 3  LI Xiaodi 1  QU Hui 1  LIANG Yingbo 1   

  • Received:2010-01-06 Revised:2010-03-08 Online:2010-09-25 Published:2010-11-30

摘要:

中国中西部地区前陆盆地油气资源丰富,加强前陆盆地新勘探领域的研究具有重要意义。前陆盆地油气勘探多集中在挤压背斜构造、岩性圈闭、生物礁、披覆背斜、地层圈闭和断块圈闭6类勘探区,其中以挤压背斜构造为主,但其勘探难度越来越大。参考近年来全球前陆盆地领域油气勘探重大成果的实践经验,结合中国前陆盆地领域油气勘探新突破的趋势,提出了造山带变质岩推覆体之下的“隐伏层序”、前陆冲断构造的“下盘冲断夹片构造”、前陆坳陷部位深层等三个潜在油气接替区,并预测此三个接替区与前陆坳陷层序具有相同的油气地质条件,有着较大的油气勘探潜力。造山带变质岩推覆体之下的“隐伏层序”发育有成盆期沉积层序;前陆冲断带“下盘冲断夹片构造”上覆地层封盖性能好、断层涂抹系数高,具有良好的储盖条件;前陆坳陷深层领域提供了优质的储集层、有利烃源岩以及晚期发育的膏岩层或致密泥岩封盖层。勘探实践证实此三个接替区具有广阔的勘探前景。

关键词: 前陆盆地, 勘探领域, 造山带变质岩, 隐伏层序, 冲断夹片构造, 油气接替区

Abstract:

The foreland basins of the central and western region of China are rich in oil and gas resources, so strengthen the research on the new exploration regions of foreland basin is important. Oil and gas exploration in foreland basins is more concentrated in six districts of the extrusion anticline structure, lithologic traps, reef, drape anticline, stratigraphic traps and fault traps. The extrusion anticline structure is the major style, but its exploration is more and more difficult. Reference to the important great discoveries in global exploration and combined with the new trend of exploration breakthrough in foreland basins domain of China, this paper brings forward three potential replacement regions of hydrocarbon reserves, which is “the concealed sequences” under the metamorphic rock thrust nappe of orogenic belt, “the footwall thrust clamping piece structures” of the foreland thrust belts, the deep formation of the foreland depression. The three potential replacement regions of hydrocarbon reserves have biggish hydrocarbon exploration potential and have the same petroleum geological conditions to the foreland depression sequences. “The concealed sequences” under the metamorphic rock thrust nappe of orogenic belt developed the basin-forming period sedimentary sequence. “The footwall thrust clamping piece structures” of the foreland thrust belts have favorable reservoir and seal condition. The deep formation of the foreland depression provided high quality source rock and reservoir. Exploration practices approved that these three potential replacement regions of hydrocarbon reserves have widely exploration prospect.

Key words: foreland basin, exploration domain, metamorphic rock of orogenic belt, concealed sequence, thrust clamping piece structure, hydrocarbon reserves replacement regions