石油学报 ›› 2006, Vol. 27 ›› Issue (3): 42-46.DOI: 10.7623/syxb200603009

• 地质勘探 • 上一篇    下一篇

东营凹陷东辛油田沙河街组一段成藏条件

李勇1,2, 钟建华1,3, 王海侨3, 温志峰3   

  1. 1. 中国科学院广州地球化学研究所 广东 广州 510640;
    2. 中国科学院研究生院 北京 100039;
    3. 中国石油大学地球资源与信息学院 山东 东营 257061
  • 收稿日期:2005-04-26 修回日期:2005-10-19 出版日期:2006-05-25 发布日期:2010-05-21
  • 作者简介:李勇,男,1977年2月生,2001年毕业于石油大学,现为中国科学院广州地球化学研究所博士研究生,主要从事石油地质研究.E-mail:jiliu1977@163.com
  • 基金资助:

    国家自然科学基金(No.49972037);中国石油天然气集团公司创新基金(2002F70108)联合资助.

Conditions of reservoir forming in the first member of Shahejie Formation in Dongxin Oilfield of Dingying Depression

Li Yong1,2, Zhong Jianhua1,3, Wang Haiqiao3, Wen Zhifeng3   

  1. 1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;
    2. Graduate School, Chinese Academy of Sciences, Beijing 100039, China;
    3. Faculty of Geo-Resources and Information, China University of Petroleum, Dongying 257061, China
  • Received:2005-04-26 Revised:2005-10-19 Online:2006-05-25 Published:2010-05-21

摘要:

近年来相继发现的高产井揭示了东辛油田沙一段具有良好的生、储、盖等成藏条件及类型多样的圈闭类型。在成藏条件上,该区三面临洼及下伏的沙三、沙四段优质烃源岩为成藏提供了充足的油气,生物灰岩、鲕粒灰岩等湖相碳酸盐岩发育的粒间孔隙、溶孔等可作为储集空间,长期继承性发育的断裂系统作为油气的疏导体系,使油气藏沿断层形成纵向上数百米的叠瓦式分布格局。在圈闭类型上,断层的广泛发育使沙一段油气藏以断层圈闭为主,良好的断层封闭性决定了油气藏的保存程度。

关键词: 东营凹陷, 东辛油田, 沙河街组, 油气成藏, 储层, 断层, 圈闭, 成藏条件

Abstract:

The first member of Shahejie Formation is just located in the key position of oil-gas migration and accumulation in Dongxin Oilfield. High-yielding wells were continually found, which indicates that this area developed favorable reservoir-forming conditions such as source rock, reservoir rock, cover and all kinds of traps. The third and forth member of Shahejie Formation surrounded by low-lying and underlying in the area provide ample oil and gas. The intergranular pore and solution void developed in biolithite, oolite limestone served as reservoir spaces, and the framework of fault with long inheritance served as a conveyance system of oil and gas, which formed the pattern of vertical overlap along the faults with a length of several hundred meters. The widely-developed faults made the fault trap being dominant in the oil-gas reservoirs of the first member of Shahejie Formation. The fault closure decided the extent of hydrocarbon preservation.

Key words: Dongying Depression, Dongxin Oilfield, Shahejie Formation, hydrocarbon accumulation, reservoir, fault, entrapment, reservoir-forming condition