石油学报 ›› 2012, Vol. 33 ›› Issue (S1): 71-79.DOI: 10.7623/syxb2012S1009

• 地质勘探 • 上一篇    下一篇

冀中坳陷隐蔽型潜山油气藏主控因素与勘探实践

赵贤正 1 王 权 1 金凤鸣 1 王海潮 1 罗金洋 1 曾溅辉 2 范炳达 1   

  1. 1 中国石油华北油田公司 河北任丘 062552; 2 中国石油大学地球科学学院 北京 102249
  • 收稿日期:2011-12-26 修回日期:2012-04-10 出版日期:2012-08-25 发布日期:2012-08-30
  • 通讯作者: 赵贤正
  • 作者简介:赵贤正,男,1962年10月生, 1986年毕业于华东石油学院,1989年获石油大学(北京)硕士学位,2005年获中国石油大学(北京)博士学位,现为中国石油华北油田公司副总经理、教授级高级工程师,主要从事石油地质综合研究与勘探管理工作。
  • 基金资助:

    国家重大科技专项(2011ZX05006-005)和中国石油天然气股份有限公司科技项目(2011D-0703)资助。

Main controlling factors and exploration practice of subtle buried-hill hydrocarbon reservoir in Jizhong depression

ZHAO Xianzheng 1 WANG Quan 1 JIN Fengming 1 WANG Haichao 1 LUO Jinyang 1 ZENG Jianhui 2 FAN Bingda 1   

  • Received:2011-12-26 Revised:2012-04-10 Online:2012-08-25 Published:2012-08-30

摘要:

渤海湾盆地冀中坳陷具有形成碳酸盐岩潜山油气藏的地质条件。随着勘探程度的不断深入,勘探方向逐步转向埋藏深、识别难度大、成藏条件复杂的隐蔽型深潜山、潜山内幕等隐蔽型潜山目标。研究表明,埋藏深度大于3500 m的隐蔽型深潜山以沙河街组三段—四段为主要烃源层,油气资源比较丰富,其储集空间以孔洞、裂缝为主,物性受埋深影响小,具有较好的储集能力;潜山内幕成藏受控于潜山内幕储盖组合的有效性、潜山内幕储层物性与油气运移通道输导能力的耦合关系,具有良好封堵能力的内幕盖层、良好储集物性的内幕储层以及优势的油气运移通道是潜山内幕成藏的关键。牛东潜山带、长洋淀潜山带、肃宁潜山带等多个隐蔽型潜山油气成藏区带的发现,展现了冀中坳陷该领域良好的勘探前景。

关键词: 渤海湾盆地, 冀中坳陷, 隐蔽型潜山油气藏, 控制因素, 成藏模式, 勘探实践

Abstract:

Jizhong depression in Bohai Bay Basin has the geological conditions to form carbonate buried-hill hydrocarbon reservoir. With continuous deepening of the degree of exploration, the exploration gradually shifts to subtle deep buried-hill, buried-hill inside and other subtle buried-hill targets with large buried depth, great identification difficulty and complex accumulation conditions. Studies have shown that the subtle deep buried-hill with burial depth greater than 3500 m takes the 3rd member-4th member of Shahejie Foramtion as the major source rock with relatively rich oil and gas resources. The reservoir space is dominant by holes and cracks and presents better accumulation capacity because the reservoir physical properties are less affected by buried depth. As for buried-hill inside, the reservoir formation is controlled by the coupling relationship among the effectiveness of internal buried-hill reservoir and caprock assemblage,the physical properties of internal buried-hill reservoir and transporting capacity of oil-gas migration channel. The internal caprocks with better sealing capacity, internal reservoirs with better reservoir physical properties and preferential hydrocarbon migration channels are the key for internal buried-hill accumulation. In practice, multiple subtle buried-hill hydrocarbon accumulation belts have been discovered, such as Niudong buried-hill belt, Changyangdian buried-hill belt, Suning buried-hill belt, etc, presenting good exploration prospects in Jizhong depression.

Key words: Bohai Bay Basin, Jizhong depression, subtle buried-hill hydrocarbon reservoir, controlling factor, accumulation mode, exploration practice