准噶尔盆地车排子凸起石炭系油气成藏主控因素及成藏模式

doi:10.12108/yxyqc.20250111

岩性油气藏 ›› 2025, Vol. 37 ›› Issue (1): 126–136.doi: 10.12108/yxyqc.20250111

准噶尔盆地车排子凸起石炭系油气成藏主控因素及成藏模式

桂诗琦^1,2, 罗群^1,2, 贺小标^1,2, 王千军³, 王仕琛^1,2, 汪亮^1,2

1. 中国石油大学(北京)油气资源与探测国家重点实验室, 北京 102249;
2. 中国石油大学(北京)非常规油气科学技术研究院, 北京 102249;
3. 中国石化胜利油田分公司勘探开发研究院, 山东东营 257000

收稿日期:2024-09-21 修回日期:2024-10-22 出版日期:2025-01-01 发布日期:2025-01-04
第一作者:桂诗琦（2000—），男，中国石油大学在读硕士研究生，研究方向为地质资源与地质工程。地址：（104299）北京市昌平区府学路18号。Email：1473441680@qq.com。
通信作者: 罗群（1963—），男，教授，主要从事常规与非常规油气成藏与地质评价研究工作。Email:luoqun2002@263.net。
基金资助:
胜利油田技术项目“车排子地区石炭系断裂控藏作用研究”（编号：30200018-22-ZC0613-0123）资助。

Main controlling factors and hydrocarbon accumulation model of Carboniferous reservoir in Chepaizi Uplift，Junggar Basin

GUI Shiqi^1,2, LUO Qun^1,2, HE Xiaobiao^1,2, WANG Qianjun³, WANG Shichen^1,2, WANG Liang^1,2

1. State Key Laboratory of Petroleum Resources and Prospecting, Beijing 102249, China;
2. Institute of Unconventional Oil and Gas Science and Technology, China University of Petroleum, Beijing 102249, China;
3. Research Institute of Exploration and Development, SINOPEC Shengli Oilfield Company, Dongying 257000, Shandong, China

Received:2024-09-21 Revised:2024-10-22 Online:2025-01-01 Published:2025-01-04

摘要/Abstract

摘要： 利用地震、测井、试油、岩心的铸体薄片和物性分析资料及物理模拟实验，探讨了准噶尔盆地车排子凸起石炭系油气成藏要素的配置关系、富集规律以及油气成藏主控因素，总结了成藏模式。研究结果表明：①准噶尔盆地车排子凸起石炭系储层岩性主要为凝灰岩、安山岩及角砾岩，储集空间主要为次生孔隙与裂缝，孔隙度多小于8%，渗透率多为0.1～10.0 mD，属于特低孔、超低渗储层。②研究区油藏富集运聚为“断-储-壳”3要素联合控制，深大断裂是油气垂向运移通道；风化淋滤作用改善了储层物性，为油气富集提供了有效储集空间；石炭系及其上覆泥岩均较致密，与裂缝发育的火山岩储层形成了良好的储盖组合；走滑断裂与盖层的配置关系对油气垂向与横向运移具有重要控制作用。③研究区油藏整体上具有“双源供烃、多体系输导、多类型盖层、多层系含油、多种油藏类型、复式含油气区”的特征。不同区域、不同深度的油藏具有明显的差异，横向上，近源为“断毯输导、侧向充注、近源风化壳成藏模式”，远源为“双源供烃、多种输导类型、硬壳封盖、远源断壳体成藏模式”；纵向上，浅部为“双源供烃、多种输导类型、硬壳封盖、浅部风化壳成藏模式”，深部为“双源供烃、断裂输导、致密岩层封盖、深部断缝体成藏模式”。

关键词: 火山岩油藏, 物理模拟, 深大断裂, 风化淋滤作用, 双源供烃, 石炭系, 车排子凸起, 准噶尔盆地

Abstract: Using seismic，logging，oil test，core，casting thin，physical property analysis and physical simulation experiments，the configuration relationship of hydrocarbon accumulation elements，enrichment law research and main controlling factors of hydrocarbon accumulation of Carboniferous reservoir in Chepaizi Uplift of Junggar Basin were discussed. The results show that：（1）The reservoir lithology in the study area is mainly tuff，andesite and breccia，and the reservoir space is mainly secondary pores and fractures. The porosity mostly less than 8%， and the permeability is concentrated in 0.1-10.0 mD，which belongs to ultra-low porosity and ultra-low permeability reservoir.（2）The enrichment，migration and accumulation elements of the reservoir are controlled by the union of three elements of“fault-reservoir-shell”：Deep and large faults are the channel of vertical migration of oil and gas；Weathering and leaching can improve reservoir physical properties and provide effective storage space for oil and gas enrichment；The Carboniferous itself and its overlying mudstone are generally relatively tight，form a good reservoir-cap combination with the fracture volcanic reservoirs；The configuration relationship between strike-slip faults and cap rocks plays an important role in controlling the vertical and lateral migration of oil and gas.（3）It is concluded that the reservoirs in the study area as a whole have the characteristics of “dual source hydrocarbon supply，multi-system transport，multi-type caprock，multi-layer oil-bearing，multireservoir type，and compound oil-bearing area”. There are significant differences in reservoir accumulation models in different regions and different depths. Horizontally，the near source is“fault blanket transport，lateral filling， near source weathering crust accumulation model”，and the far source is“dual source hydrocarbon supply， multiple transport types，hard shell sealing，far source fault shell accumulation model”. Vertically，the shallow part is“dual-source hydrocarbon supply，multiple transport types，hard shell sealing，shallow weathering crust accumulation mode”，and the deep part is“dual-source hydrocarbon supply，fault transport，tight rock sealing， deep fault body accumulation mode”.

Key words: volcanic reservoir, physical simulation, deep and large faults, weathering and leaching, dual source hydrocarbon supply, Carboniferous, Chepaizi Uplift, Junggar Basin

中图分类号:

TE122.1

桂诗琦, 罗群, 贺小标, 王千军, 王仕琛, 汪亮. 准噶尔盆地车排子凸起石炭系油气成藏主控因素及成藏模式[J]. 岩性油气藏, 2025, 37(1): 126–136.

GUI Shiqi, LUO Qun, HE Xiaobiao, WANG Qianjun, WANG Shichen, WANG Liang. Main controlling factors and hydrocarbon accumulation model of Carboniferous reservoir in Chepaizi Uplift，Junggar Basin[J]. Lithologic Reservoirs, 2025, 37(1): 126–136.

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准噶尔盆地车排子凸起石炭系油气成藏主控因素及成藏模式

Main controlling factors and hydrocarbon accumulation model of Carboniferous reservoir in Chepaizi Uplift，Junggar Basin

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