石油学报 ›› 2007, Vol. 28 ›› Issue (2): 35-39.DOI: 10.7623/syxb200206006

• 地质勘探 • 上一篇    下一篇

歧口凹陷岩性地层油气藏特征及勘探潜力

蒲秀刚1,2, 吴永平3, 周建生3, 杨池银3, 廖前进3, 周立宏3, 肖敦清3, 查明2, 柳飒3   

  1. 1. 中国石油大港油田博士后工作站, 天津, 300280;
    2. 中国石油大学博士后流动站, 山东东营, 257061;
    3. 中国石油大港油田公司, 天津, 300280
  • 收稿日期:2006-03-27 修回日期:2006-05-22 出版日期:2007-03-25 发布日期:2010-05-21
  • 作者简介:蒲秀刚,男,1968年12月生,2004年获中国矿业大学(北京)博士学位,高级工程师,主要从事石油地质勘探领域的综合研究工作,现为中国石油大学博士后流动站--大港油田博士后工作站在站博士后.E-mail:puxg@163.com
  • 基金资助:
    中国石油大港油田公司博士后科研基金(2004-ktbh-1)资助.

Characteristics and exploration potential of lithologic-stratigraphic hydrocarbon reservoirs in Q ikou Sag of Dagang Oilfield

Pu Xiugang1,2, Wu Yongping3, Zhou Jiansheng3, Yang Chiyin3, Liao Qianjin3, Zhou Lihong3, Xiao Dunqing3, Zha Ming2, Liu Sa3   

  1. 1. Working Station for Postdoctoral Scientific Research, Petro China Dagang Oilfield Company, Tianjin 300280, China;
    2. Working Station for Postdoctoral Scientific Research, China University of Petroleum, Dongying 257061, China;
    3. Petro China Dagang Oilfield Company, Tianjin 300280, China
  • Received:2006-03-27 Revised:2006-05-22 Online:2007-03-25 Published:2010-05-21

摘要: 渤海湾盆地黄骅坳陷歧口凹陷(大港探区)岩性地层油气藏分布广、类型多。形成规模储量的主要为储集层上倾尖灭和构造-岩性复合地层两大类油气藏。决定其圈闭分布的主要因素是古构造背景与沉积物源体系的匹配,成藏机理为“三元耦合控藏”。该工区有5个领域值得重视:①古隆起围斜、倾没端、构造坡折带之反向碎屑物源区;②沉积频繁相变区;③古隆起缓坡带;④(半)封闭湖湾区;⑤湖盆陡坡坡折带及凹陷之中卸载区。根据“宏观岩性地层油气藏”勘探原理,将构造带当作岩性变化带,在复式油气藏勘探方法基础上,采用以岩性油气藏勘探与精细勘探相结合的勘探方法。同构造油气藏相比,该工区岩性地层油气藏分布空间范围广,体系域全,压力场宽,储量也占优势,是油气勘探的重点目标之一。

关键词: 渤海湾盆地, 黄骅坳陷, 歧口凹陷, 岩性地层油气藏, 油气勘探领域, 勘探潜力

Abstract: There are various and abundant lithologic-stratigraphic hydrocarbon reservoirs in Dagang prospecting area of Qikou Sag in Huanghua Depression of Bohai Bay Basin. The primary reservoirs in reserves are the updip pinch out reservoir and structural-lithologic composite reservoir. Those non-structural traps rely on matching between palaeostructure background and sedimentary system. According to palaeostructure cosmetics of Qikou Sag in Dagang prospecting area and distribution characteristics of sedimentary system, there are five important domains for petroleum exploration, including ① enclosed slope of palaeohigh, pitching end, and reversal clastic source area of slope break; ② frequent facies change area; ③ break in gentle slope of palaeohigh; ④ semi-close lacustrine bay area; ⑤ break in abrupt slope and low-lying offloading areas in depression. According to the exploration principle of "macroscopic lithologic-stratigraphic hydrocarbon reservoirs", a special exploration strategy was adopted in Dagang Oilfield. The sedimentary system superposition research method was combined with palaeostructure background. The structural zone was emphasized as the lithologic change zone, and the exploration of lithologic-stratigraphic hydrocarbon reservoirs was combined with subtle techniques and procedures. Comparing with the structural reservoir, the lithologic-stratigraphic reservoirs in Dagang prospecting area have more abundant types, more wide distribution areas and more reserves, as well as all system tracts and whole pressure fields. So, these reservoirs are the most important exploration targets.

Key words: Bohai Bay Basin, Huanghua Depression, Qikou Sag, lithologic stratigraphic hydrocarbon reservoirs, petroleum exploration domains, exploration potential

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