摘要
准噶尔盆地红车断裂带尽管历经60多年的油气勘探,相继发现了多种类型的油气藏,但其成藏富集条件及成藏规律仍缺乏系统研究。综合分析红车断裂带的油气地质和成藏条件,总结成藏模式并指出下一步勘探领域,可为开拓新领域、新层系以及老区挖潜提供新思路。根据区域断裂特征、断裂的组合关系及构造演化等差异,可将红车断裂带自北向南分为红山嘴断裂带、车排子断裂带和红光镇断裂带3部分。红车断裂带的储层岩性以石炭系火山岩和二叠系、三叠系、侏罗系、白垩系砂砾岩为主,储集条件良好。提出了2类成藏模式:①远源“源-储断接”油藏模式,该模式主要发育于红山嘴断裂带和车排子断裂带,因其距离沙湾凹陷烃源中心远,断裂的断距大小决定了油藏高度;红山嘴断裂带和车排子断裂带在立体勘探中均获得了较大的油气储量发现,尤其在车排子断裂带,不仅在老区新层系中获得了突破,在老层系的再挖潜中也获得了发现,是未来精细勘探的首选突破口。②近源“源-储对接”气藏成藏模式,该模式主要发育于红光镇断裂带,其距离沙湾凹陷的烃源中心近且发育多套规模储层,具备高压封存箱和规模气藏的形成条件,尽管目前尚无钻探井,但可作为风险勘探的首选领域。
Although after more than 60 years of oil-gas exploration,various types of reservoirs have been discovered in Hongche fault zone of Junggar Basin,of which thereservoir enrichment conditions and accumulation regularities are still not systematically studied.To comprehensively analyze the petroleum geology and accumulation conditions of Hongche fault zone,summarize the accumulation models,and point out the subsequent exploration fields can provide new ideas for exploring new fields and new strata as well as tapping the potential of old mining areas.According to the characteristics,assemblages,and tectonic evolution of regional faults,Hongche fault zone can be divided into three sections from north to south,i.e.,Hongshanzui fault zone,Chepaizi fault zone,and Hongguangzhen fault zone.The reservoirs in Hongche fault zone are mainly composed of Carboniferous volcanic rocks and Permian,Triassic,Jurassic,and Cretaceous glutenite,with good reservoir conditions.In this paper,two types of accumulation models are proposed.(1)Far-source“source-reservoir disconnection”reservoir mode.This mode is mainly developed in Hongshanzui fault zone and Chepaizi fault zone.Because it is far from the hydrocarbon source center of Shawan sag,the fault displacement determines the height of the reservoir;large petroleum reserves have been discovered in multilayer exploration in both Hongshanzui fault zone and Chepaizi fault zone,especially in Chepaizi fault zone.Moreover,not only breakthroughs have been made in the new strata of old mining areas,but also new discoveries have been made in potential tapping of old strata,which will become the preferred breakthrough point for future fine exploration.(2)Near-source“source-reservoir connection”gas reservoir mode.This mode is mainly developed in Hongguangzhen fault zone,which is close to the hydrocarbon source center of Shawan sag and develops multiple sets of large-scale reservoirs.It possesses the conditions for forming high-pressure compartment and large-scale gas reservoirs.Although there is no well drilling in this zone at present,it can be the preferred field for risk exploration.
作者
董雪梅
李静
潘拓
徐倩
陈亮
任军民
金科
Dong Xuemei;Li Jing;Pan Tuo;Xu Qian;Chen Liang;Ren Junmin;Jin Ke(Research Institute of Exploration and Development,PetroChina Xinjiang Oilfield Company,Xinjiang Urumqi 830013,China;Postdoctoral Workstation of PetroChina Xinjiang Oilfield Company,Xinjiang Karamay 834000,China;Research Institute of Exploration and Development,PetroChina Liaohe Oilfield Company,Liaoning Panjin 124000,China)
出处
《石油学报》
EI
CAS
CSCD
北大核心
2023年第5期748-764,共17页
Acta Petrolei Sinica
基金
中国石油天然气集团有限公司科技重大专项“准噶尔盆地油藏富集规律及勘探技术研究与应用”(2017E-0401)资助。
关键词
车排子断裂带
红光镇断裂带
源-储断接
源-储对接
精细勘探
风险勘探
Chepaizi fault zone
Hongguangzhen fault zone
source-reservoir disconnection
source-reservoir connection
fine exploration
risk exploration
