岩性油气藏 ›› 2015, Vol. 27 ›› Issue (2): 26–30.doi: 10.3969/j.issn.1673-8926.2015.02.005

• 油气地质 • 上一篇    下一篇

冀中坳陷潜山油气藏输导体系及成藏模式

高长海1,查 明1,赵贤正2,彭 浦3   

  1.  1. 中国石油大学(华东) 地球科学与技术学院,山东 青岛 266580 ; 2. 中国石油华北油田分公司,河北 任丘 062552 ; 3. 中国石化胜利油田分公司 河口采油厂,山东 东营 257200
  • 出版日期:2015-03-03 发布日期:2015-03-03
  • 作者简介:高长海( 1977- ),男,博士,讲师,主要从事油气成藏机理与分布规律方面的教学与科研工作。 地址:( 266580 )山东省青岛市黄岛区长江西路 66 号地学院。 E-mail : gch260725@163.com
  • 基金资助:

    国家重大科技专项“重点盆地地层油气藏成藏机理与分布规律”(编号: 2011ZX05001-001-006) 、山东省自然科学基金项目“基于大中型不整合结构体的油气分布规律研究”(编号: ZR2013DM016 )和中央高校基本科研业务费专项资金项目“基于碎屑岩不整合结构体的次生成岩特征研究”(编号: 14CX02034A )联合资助

Migration systems and hydrocarbon accumulation models of buried hill reservoirs in Jizhong Depression

GAO Changhai1, ZHA Ming1, ZHAO Xianzheng2, PENG Pu3   

  1. 1. School of Geosciences , China University of Petroleum , Qingdao 266580 , Shandong , China ; 2. PetroChina Huabei Oilfield Company , Renqiu 062552 , Hebei , China ; 3. Hekou Oil Production Plant , Shengli Oilfield Company ,Sinopec , Dongying 257200 , Shandong , China
  • Online:2015-03-03 Published:2015-03-03

摘要:

冀中坳陷潜山具有多期构造运动和储层非均质性强等特征,油气输导体系一直是该类油气藏研究的难点,成为制约潜山勘探的主要因素之一。 通过分析中元古代以来的构造格架、沉积充填和油藏特征等,认为冀中坳陷潜山主要发育断层、不整合以及碳酸盐岩储集层等 3 种油气输导类型,其中断层和不整合共同构成了潜山油气藏的主要输导体系,并与碳酸盐岩储集层一起控制了潜山的油气运移与成藏。 依据断层和不整合对油气输导作用的大小,将冀中坳陷潜山油气藏输导体系组合划分为断层主导型、不整合主导型及断层-不整合复合型这 3 种类型,结合潜山区带分布及构造特征的差异性,建立了断阶带、斜坡带和中央隆起带 3 种潜山油气成藏模式,其中断阶带和斜坡带将是今后潜山勘探的重点区带。

关键词: 水溶气脱溶, 关键时期, 沙溪庙组, 成都凹陷

Abstract:

 The buried hills in Jizhong Depression are abundant in hydrocarbon which is characterized by multi-stage tectonic movements and complex reservoir heterogeneity. The exploration results in recent years indicate that the hydrocarbon migration system in buried hills has become the key factor restricting the exploration. Based on the analysis of structural framework, depositional filling and reservoir characteristics since Mesoproterozoic, it is determined that the hydrocarbon migration pathways of buried hills include fault, unconformity and carbonate reservoir. Among them, faults and unconformities serve as the main migration pathways and control simultaneously the hydrocarbon migration and accumulation with carbonate reservoirs. The assemblage types of hydrocarbon migration system are divided into fault-dominated, unconformity-dominated and fault-unconformity composite according to their functions. On this basis, the hydrocarbon accumulation models can be concluded into three types in combination with differences of zone distribution and structural features, including central uplift belt, fault step belt and ramp belt. The future exploration zones should be focused on the fault step belt and the ramp belt.

Key words:  water-soluble gas degasification, crucial period, Shaximiao Formation, Chengdu Depression

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