海拉尔盆地贝尔凹陷岩性油藏成藏控制因素

doi:10.7623/syxb201503008

石油学报 ›› 2015, Vol. 36 ›› Issue (3): 337-346.DOI: 10.7623/syxb201503008

海拉尔盆地贝尔凹陷岩性油藏成藏控制因素

李文科¹, 张研¹, 方杰¹, 王君^1,2, 刘冬民³

1. 中国石油勘探开发研究院北京 100083;
2. 中国地质大学地球科学与资源学院北京 100083;
3. 中国石油集团东方地球物理勘探有限责任公司河北涿州 072751

收稿日期:2014-10-23 修回日期:2015-02-03 出版日期:2015-03-25 发布日期:2015-03-11
通讯作者: 李文科,男,1984年4月生,2007年获东北石油大学学士学位,2014年获中国石油勘探开发研究院博士学位,现为中国石油勘探开发研究院工程师,主要从事储层地震地质综合研究工作。Email:liwenke_2010@petrochina.com.cn
作者简介:李文科,男,1984年4月生,2007年获东北石油大学学士学位,2014年获中国石油勘探开发研究院博士学位,现为中国石油勘探开发研究院工程师,主要从事储层地震地质综合研究工作。Email:liwenke_2010@petrochina.com.cn
基金资助:
国家重大科技专项"岩性地层油气藏成藏规律、关键技术及目标评价"(2011ZX05001)资助

Control factors of hydrocarbon accumulation for lithologic reservoirs in Beier depression, Hailar Basin

Li Wenke¹, Zhang Yan¹, Fang Jie¹, Wang Jun^1,2, Liu Dongmin³

1. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China;
2. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;
3. CNPC Geophysical Company Limited,Hebei Zhuozhou 072751, China

Received:2014-10-23 Revised:2015-02-03 Online:2015-03-25 Published:2015-03-11

摘要/Abstract

摘要：

岩性油藏是贝尔凹陷油气勘探和增储上产的重要领域,但对其成藏规律的研究和认识程度仍然较低,极大地制约了岩性油藏的勘探进程。基于测井、地震及物性分析等资料,通过油藏解剖和成藏条件分析,系统研究了贝尔凹陷不同洼槽岩性油藏成藏控制因素及分布规律,认为岩性圈闭、储层物性以及输导通道是该区岩性油藏形成与分布的主控因素。断裂坡折带控制岩性圈闭的发育,即在垂向上,断裂坡折带类型控制砂体类型,主要发育断崖型坡折带形成的近岸水下扇,断阶型坡折带形成的浊积扇以及断坡型坡折带形成的扇三角洲砂体等岩性圈闭;在平面上,断裂坡折带的平面样式控制砂体的空间展布,主要形成断弯型、断接型、断沟型以及交叉型展布形态。砂岩储层临界物性控制岩性圈闭的成藏,只有当砂岩储层的物性高于临界物性时岩性圈闭才具备成藏条件。"断层-轴向砂体"控制岩性油藏的分布,特别是控砂断层下降盘扇三角洲砂体的轴向部位是油气的有利富集区。

关键词: 断层-轴向砂体, 储层临界物性, 断裂坡折带, 岩性油藏, 贝尔凹陷, 海拉尔盆地

Abstract:

Lithologic reservoirs are an important domain for oil and gas exploration and enhancement of reserve and production in Beier Depression. However, the reservoir-formation laws are still less studied and recognized, thus greatly restricting the exploration progress of lithologic reservoirs. In this study, based on logging, seismic and physical property analysis data, the control factors and distribution laws of lithologic reservoir formation in various sags of Beier Depression were systematically analyzed through reservoir anatomization and analysis of reservoir-formation conditions. It is believed that lithologic traps, reservoir physical properties and transporting pathways are major factors for controlling the formation and distribution of lithologic reservoirs in this area. The development of lithologic traps is controlled by the faulted slope break belts, i.e., in the vertical level, the type of sand bodies is controls by that of the faulted slope break belts, mainly developing the near-shore subaqueous fan formed by fault-scarp slope break belt, turbidite fan formed by fault-terrace slope-break belt, fan delta sand bodies formed by fault-slope slope break belt and other lithologic traps; in the horizontal level , spatial distribution of the developed sand bodies is controlled by planar pattern of the faulted slope break belt, mainly forming the fault-bend, fault-connection, fault-gully and cross-type distribution patterns. The reservoir formation of lithologic trap is controlled by critical physical properties of sandstone reservoirs. Reservoirs are formed only in lithologic traps with sandstone physical properties higher than critical physical properties. The distribution of lithologic reservoirs is controlled by fault-axial sand bodies. In particular, the axial section of fan delta sand bodies on the downthrown side of sand control fault is favorable for hydrocarbon accumulation.

Key words: fault-axial sandbody, critical physical property of reserviors, faulted slope-break belt, lithologic reservoirs, Beier depression, Hailar Basin

中图分类号:

TE122

李文科, 张研, 方杰, 王君, 刘冬民. 海拉尔盆地贝尔凹陷岩性油藏成藏控制因素[J]. 石油学报, 2015, 36(3): 337-346.

Li Wenke, Zhang Yan, Fang Jie, Wang Jun, Liu Dongmin. Control factors of hydrocarbon accumulation for lithologic reservoirs in Beier depression, Hailar Basin[J]. Acta Petrolei Sinica, 2015, 36(3): 337-346.

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海拉尔盆地贝尔凹陷岩性油藏成藏控制因素

Control factors of hydrocarbon accumulation for lithologic reservoirs in Beier depression, Hailar Basin

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