Traditional petroleum system theories emphasize the restoration of the accumulation process from“source”to“trap”.The main oil and gas resources in the concept are conventional oil and gas,lacking the concept and r...Traditional petroleum system theories emphasize the restoration of the accumulation process from“source”to“trap”.The main oil and gas resources in the concept are conventional oil and gas,lacking the concept and research of unconventional oil and gas enrichment mechanism.The whole petroleum system is developed from the traditional petroleum system.Combined with unconventional oil and gas exploration practices and discoveries such as shale oil and gas,the whole petroleum system adds the research content of unconventional oil and gas.Although the study of the whole petroleum system is still in three aspects:geological elements,dynamic evolution and oil and gas distribution,its research ideas and research contents are very different,including the following three aspects.(1)In terms of geological elements,the traditional petroleum system studies the characteristics of source rocks and hydrocarbon generation evolution,and the reservoir properties,traps,migration and preservation conditions of conventional oil and gas.On the basis of the above research,the whole petroleum system has increased the quantitative evaluation of retained hydrocarbons,unconventional reservoir characterization,source reservoir configuration and other research contents.(2)In terms of dynamic evolution,the petroleum system studies the matching between the evolution of conventional oil and gas source rocks and the formation period of traps,while the whole petroleum system has increased the research content of the matching of unconventional reservoir densification and oil and gas charging,and the later transformation of unconventional oil and gas reservoirs.(3)In terms of oil and gas distribution,the petroleum system takes buoyancy-drived accumulation mechanism as the core to study the migration,accumulation and distribution of conventional oil and gas.The whole petroleum system adds unconventional oil and gas self-sealing accumulation mechanism and conventional-unconventional oil and gas distribution sequence,so as to determine the oil and gas distribution characteristics of the whole petroleum system.展开更多
According to the theory of petroleum system and the characteristics of petroleum geology, the Xihu depression in the East China Sea shelf basin is divided into four petroleum systems: the Pinghu Formation as source ro...According to the theory of petroleum system and the characteristics of petroleum geology, the Xihu depression in the East China Sea shelf basin is divided into four petroleum systems: the Pinghu Formation as source rock and the Huagang Formation as reservoir rock, the Huagang Formation as source rock and reservoir rock, the Paleocene as source rock and the burial-hill as reservoir rock, and the Miocene as source rock and reservoir rock. The system with the Pinghu Formation as source rock and the Huagang Formation as reservoir rock is the most important one in the depression, which has high hydrocarbon generation and accumulation efficiency and is the most important object to hydrocarbon exploration at present.展开更多
In order to further the course of petroleum exploration and development in the Chagan （查干） depression in the Yingen（银根）-Ejinaqi （额济纳旗） basin, Northwest China, the major characteristics of the petroleum s...In order to further the course of petroleum exploration and development in the Chagan （查干） depression in the Yingen（银根）-Ejinaqi （额济纳旗） basin, Northwest China, the major characteristics of the petroleum systems were comprehensively analyzed, including the essential geological elements, processes, and oil characteristics. Petroleum system theory and quantitative simulation techniques were used. The dolomitic mudstone and shale of the Second Member of the Bayingebi （巴音戈壁） Formation are the major source rocks, with higher organic matter content and greater intensities of hydrocarbon generated and expelled. The sandstone in the First Member of the Suhongtu （苏红图） Formation is the main reservoir rock. The mudstone in the Second Member of the Suhongtu Formation is the most important seal. The crude oil discovered so far has a close relationship with the source rock in the Second Member of the Bayingebi Formation. There are three petroleum systems in the Chagan depression. The primary system is the Second Member of the Bayingebi Formation-the First Member of the Suhongtu Formation, which is the most important target for hydrocarbon exploration in the depression.展开更多
基金Supported by the Fundamental Project of China National Petroleum Corporation(2021DJ0101)。
文摘Traditional petroleum system theories emphasize the restoration of the accumulation process from“source”to“trap”.The main oil and gas resources in the concept are conventional oil and gas,lacking the concept and research of unconventional oil and gas enrichment mechanism.The whole petroleum system is developed from the traditional petroleum system.Combined with unconventional oil and gas exploration practices and discoveries such as shale oil and gas,the whole petroleum system adds the research content of unconventional oil and gas.Although the study of the whole petroleum system is still in three aspects:geological elements,dynamic evolution and oil and gas distribution,its research ideas and research contents are very different,including the following three aspects.(1)In terms of geological elements,the traditional petroleum system studies the characteristics of source rocks and hydrocarbon generation evolution,and the reservoir properties,traps,migration and preservation conditions of conventional oil and gas.On the basis of the above research,the whole petroleum system has increased the quantitative evaluation of retained hydrocarbons,unconventional reservoir characterization,source reservoir configuration and other research contents.(2)In terms of dynamic evolution,the petroleum system studies the matching between the evolution of conventional oil and gas source rocks and the formation period of traps,while the whole petroleum system has increased the research content of the matching of unconventional reservoir densification and oil and gas charging,and the later transformation of unconventional oil and gas reservoirs.(3)In terms of oil and gas distribution,the petroleum system takes buoyancy-drived accumulation mechanism as the core to study the migration,accumulation and distribution of conventional oil and gas.The whole petroleum system adds unconventional oil and gas self-sealing accumulation mechanism and conventional-unconventional oil and gas distribution sequence,so as to determine the oil and gas distribution characteristics of the whole petroleum system.
基金This paper is supported by the National Natural Science Foundation of China (No. 40172051) the Foundation for University Ke
文摘According to the theory of petroleum system and the characteristics of petroleum geology, the Xihu depression in the East China Sea shelf basin is divided into four petroleum systems: the Pinghu Formation as source rock and the Huagang Formation as reservoir rock, the Huagang Formation as source rock and reservoir rock, the Paleocene as source rock and the burial-hill as reservoir rock, and the Miocene as source rock and reservoir rock. The system with the Pinghu Formation as source rock and the Huagang Formation as reservoir rock is the most important one in the depression, which has high hydrocarbon generation and accumulation efficiency and is the most important object to hydrocarbon exploration at present.
基金This paper is supported by the National Natural Science Foundation ofChina ( No . 40172051 ) SRF for ROCS, CUG-Wuhan ( No .CUGLX0502090) .
文摘In order to further the course of petroleum exploration and development in the Chagan （查干） depression in the Yingen（银根）-Ejinaqi （额济纳旗） basin, Northwest China, the major characteristics of the petroleum systems were comprehensively analyzed, including the essential geological elements, processes, and oil characteristics. Petroleum system theory and quantitative simulation techniques were used. The dolomitic mudstone and shale of the Second Member of the Bayingebi （巴音戈壁） Formation are the major source rocks, with higher organic matter content and greater intensities of hydrocarbon generated and expelled. The sandstone in the First Member of the Suhongtu （苏红图） Formation is the main reservoir rock. The mudstone in the Second Member of the Suhongtu Formation is the most important seal. The crude oil discovered so far has a close relationship with the source rock in the Second Member of the Bayingebi Formation. There are three petroleum systems in the Chagan depression. The primary system is the Second Member of the Bayingebi Formation-the First Member of the Suhongtu Formation, which is the most important target for hydrocarbon exploration in the depression.
