海拉尔-塔木察格盆地中部断陷输导体系类型及其控藏作用

doi:10.11743/ogg20120310

摘要/Abstract

摘要：

通过油藏解剖和成藏条件空间配置关系的详细分析,对海拉尔-塔木察格盆地(简称海塔盆地)中部主要断陷带生储盖组合类型、油气输导体系及其对油气成藏的控制作用进行了研究。结果表明,该区发育有自生自储式、下生上储式和上生下储式3种生储盖组合类型,每种生储盖组合中油气运移输导体系及有利的油气富集部位均有所差异。在自生自储式生储盖组合中,油气运移输导体系为孔隙裂缝和梳状输导体系;孔隙裂缝输导体系沟通的洼槽和梳状输导体系沟通的反向断裂翘倾隆起和洼中隆是该类生储盖组合中岩性油气藏形成的有利区域。在下生上储式生储盖组合中,油气运移输导体系为花状输导体系,由其沟通的反转构造是该组合内油气成藏的有利区域。在上生下储生储盖组合中,油气运移输导体系为阶梯状或倒U字型输导体系,其所沟通的不整合面古隆起是油气藏形成的有利区域。

关键词: 生储盖组合, 输导体系, 油气成藏, 断陷, 海拉尔-塔木察格盆地

Abstract:

The types of source-reservoir-cap rock assemblages,migration systems and their control on hydrocarbon accumulation in the main central fault depressions in Hailar-Tamtsag Basin(Haita Basin)were investigated by analyzing spatial combinations of hydrocarbon accumulation elements and processes.Three types of source-reservoir-cap rock assemblages were recognized,including self-source and self-reservoir,up-source and down-reservoir,and down-source and up-reservoir.Different source-reservoir-cap assemblages have different hydrocarbon migration and accomulation systems.For the self-source and self-reservoir type,hydrocarbon migration pathways are pore-fracture and comb-like systems.Subsags connected by the pore-fracture system and tilting uplifts and uplifts within sag connected by the comb-like system are favorable for development of lithologic reservoirs.For the up-source and down-reservoirs type,the migration system is flower-like.The reverse structures connected by the flower-like system are favorable for hydrocarbon accumulation.For the down-source and up-reservoir type,the migration systems are step-like or inverted U-shaped.The palaeouplifts connected by unconformities are favorable for hydrocarbon accumulation.

Key words: source-reservoir-cap assemblage, migration system, hydrocarbon accumulation, fault depression, Hailar-Tamtsag Basin

中图分类号:

TE122.1

李明义,岳湘安,江青春,等. 海拉尔-塔木察格盆地中部断陷输导体系类型及其控藏作用[J]. 石油与天然气地质, 2012, 33(3): 407-416,423. doi: 10.11743/ogg20120310 Li Mingyi,Yue Xiang’an,Jiang Qingchun,et al. Migration system types and their control on hydrocarbon accumulation in central fault depressions of Hailar-Tamtsag Basin[J]. Oil & Gas Geology, 2012, 33(3): 407-416,423. doi: 10.11743/ogg20120310

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