Based on the oil and gas exploration in western depression of the Qaidam Basin,NW China,combined with the geochemical,seismic,logging and drilling data,the basic geological conditions,oil and gas distribution characte...Based on the oil and gas exploration in western depression of the Qaidam Basin,NW China,combined with the geochemical,seismic,logging and drilling data,the basic geological conditions,oil and gas distribution characteristics,reservoir-forming dynamics,and hydrocarbon accumulation model of the Paleogene whole petroleum system(WPS)in the western depression of the Qaidam Basin are systematically studied.A globally unique ultra-thick mountain-style WPS is found in the western depression of the Qaidam Basin.Around the source rocks of the upper member of the Paleogene Lower Ganchaigou Formation,the structural reservoir,lithological reservoir,shale oil and shale gas are laterally distributed in an orderly manner and vertically overlapped from the edge to the central part of the lake basin.The Paleogene WPS in the western depression of the Qaidam Basin is believed unique in three aspects.First,the source rocks with low organic matter abundance are characterized by low carbon and rich hydrogen,showing a strong hydrocarbon generating capacity per unit mass of organic carbon.Second,the saline lake basinal deposits are ultra-thick,with mixed deposits dominating the center of the depression,and strong vertical and lateral heterogeneity of lithofacies and storage spaces.Third,the strong transformation induced by strike-slip compression during the Himalayan resulted in the heterogeneous enrichment of oil and gas in the mountain-style WPS.As a result of the coordinated evolution of source-reservoir-caprock assemblage and conducting system,the Paleogene WPS has the characteristics of“whole process”hydrocarbon generation of source rocks which are low-carbon and hydrogen-rich,“whole depression”ultra-thick reservoir sedimentation,“all direction”hydrocarbon adjustment by strike-slip compressional fault,and“whole succession”distribution of conventional and unconventional oil and gas.Due to the severe Himalayan tectonic movement,the western depression of the Qaidam Basin evolved from depression to uplift.Shale oil is widely distributed in the central lacustrine basin.In the sedimentary system thicker than 2000 m,oil and gas are continuous in the laminated limy-dolomites within the source rocks and the alga limestones neighboring the source kitchen,with intercrystalline pores,lamina fractures in dolomites and fault-dissolution bodies serving as the effective storage space.All these findings are helpful to supplement and expand the WPS theory in the continental lake basins in China,and provide theoretical guidance and technical support for oil and gas exploration in the Qaidam Basin.展开更多
等离子体控制系统(PCS,Plasma Control System)是托卡马克装置运行的关键系统,控制等离子体放电全过程并提供装置安全的第一级保护。基于开源的实时日志管理平台ELKB,并引入消息中间件Kafka,为中国聚变工程实验堆(CFETR,China Fusion En...等离子体控制系统(PCS,Plasma Control System)是托卡马克装置运行的关键系统,控制等离子体放电全过程并提供装置安全的第一级保护。基于开源的实时日志管理平台ELKB,并引入消息中间件Kafka,为中国聚变工程实验堆(CFETR,China Fusion Engineering Test Reactor)的PCS设计了日志管理系统,解决了现有的PCS日志系统对于日志信息的查看很不方便,并且信息冗杂,也无数据归档的问题,实现对PCS日志的关键出错信息的查看、相关错误发生时间的查询、自定义检索过滤条件、按照日期查看操作记录,以及持久化存储等功能。目前该系统已实现在东方超环(EAST,Experimental Advanced Superconducting Tokamak)上的部署并成功应用。展开更多
基金Supported by the PetroChina Science and Technology Special Project(2021DQ0405,2023ZZ15)National Natural Science Foundation of China(42090025)。
文摘Based on the oil and gas exploration in western depression of the Qaidam Basin,NW China,combined with the geochemical,seismic,logging and drilling data,the basic geological conditions,oil and gas distribution characteristics,reservoir-forming dynamics,and hydrocarbon accumulation model of the Paleogene whole petroleum system(WPS)in the western depression of the Qaidam Basin are systematically studied.A globally unique ultra-thick mountain-style WPS is found in the western depression of the Qaidam Basin.Around the source rocks of the upper member of the Paleogene Lower Ganchaigou Formation,the structural reservoir,lithological reservoir,shale oil and shale gas are laterally distributed in an orderly manner and vertically overlapped from the edge to the central part of the lake basin.The Paleogene WPS in the western depression of the Qaidam Basin is believed unique in three aspects.First,the source rocks with low organic matter abundance are characterized by low carbon and rich hydrogen,showing a strong hydrocarbon generating capacity per unit mass of organic carbon.Second,the saline lake basinal deposits are ultra-thick,with mixed deposits dominating the center of the depression,and strong vertical and lateral heterogeneity of lithofacies and storage spaces.Third,the strong transformation induced by strike-slip compression during the Himalayan resulted in the heterogeneous enrichment of oil and gas in the mountain-style WPS.As a result of the coordinated evolution of source-reservoir-caprock assemblage and conducting system,the Paleogene WPS has the characteristics of“whole process”hydrocarbon generation of source rocks which are low-carbon and hydrogen-rich,“whole depression”ultra-thick reservoir sedimentation,“all direction”hydrocarbon adjustment by strike-slip compressional fault,and“whole succession”distribution of conventional and unconventional oil and gas.Due to the severe Himalayan tectonic movement,the western depression of the Qaidam Basin evolved from depression to uplift.Shale oil is widely distributed in the central lacustrine basin.In the sedimentary system thicker than 2000 m,oil and gas are continuous in the laminated limy-dolomites within the source rocks and the alga limestones neighboring the source kitchen,with intercrystalline pores,lamina fractures in dolomites and fault-dissolution bodies serving as the effective storage space.All these findings are helpful to supplement and expand the WPS theory in the continental lake basins in China,and provide theoretical guidance and technical support for oil and gas exploration in the Qaidam Basin.
文摘等离子体控制系统(PCS,Plasma Control System)是托卡马克装置运行的关键系统,控制等离子体放电全过程并提供装置安全的第一级保护。基于开源的实时日志管理平台ELKB,并引入消息中间件Kafka,为中国聚变工程实验堆(CFETR,China Fusion Engineering Test Reactor)的PCS设计了日志管理系统,解决了现有的PCS日志系统对于日志信息的查看很不方便,并且信息冗杂,也无数据归档的问题,实现对PCS日志的关键出错信息的查看、相关错误发生时间的查询、自定义检索过滤条件、按照日期查看操作记录,以及持久化存储等功能。目前该系统已实现在东方超环(EAST,Experimental Advanced Superconducting Tokamak)上的部署并成功应用。
