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Hydrocarbon accumulation and orderly distribution of whole petroleum system in marine carbonate rocks of Sichuan Basin,SW China 被引量:1
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作者 GUO Xusheng HUANG Renchun +3 位作者 ZHANG Dianwei LI Shuangjian SHEN Baojian LIU Tianjia 《Petroleum Exploration and Development》 SCIE 2024年第4期852-869,共18页
Based on the situation and progress of marine oil/gas exploration in the Sichuan Basin,SW China,the whole petroleum system is divided for marine carbonate rocks of the basin according to the combinations of hydrocarbo... Based on the situation and progress of marine oil/gas exploration in the Sichuan Basin,SW China,the whole petroleum system is divided for marine carbonate rocks of the basin according to the combinations of hydrocarbon accumulation elements,especially the source rock.The hydrocarbon accumulation characteristics of each whole petroleum system are analyzed,the patterns of integrated conventional and unconventional hydrocarbon accumulation are summarized,and the favorable exploration targets are proposed.Under the control of multiple extensional-convergent tectonic cycles,the marine carbonate rocks of the Sichuan Basin contain three sets of regional source rocks and three sets of regional cap rocks,and can be divided into the Cambrian,Silurian and Permian whole petroleum systems.These whole petroleum systems present mainly independent hydrocarbon accumulation,containing natural gas of affinity individually.Locally,large fault zones run through multiple whole petroleum systems,forming a fault-controlled complex whole petroleum system.The hydrocarbon accumulation sequence of continental shelf facies shale gas accumulation,marginal platform facies-controlled gas reservoirs,and intra-platform fault-and facies-controlled gas reservoirs is common in the whole petroleum system,with a stereoscopic accumulation and orderly distribution pattern.High-quality source rock is fundamental to the formation of large gas fields,and natural gas in a whole petroleum system is generally enriched near and within the source rocks.The development and maintenance of large-scale reservoirs are essential for natural gas enrichment,multiple sources,oil and gas transformation,and dynamic adjustment are the characteristics of marine petroleum accumulation,and good preservation conditions are critical to natural gas accumulation.Large-scale marginal-platform reef-bank facies zones,deep shale gas,and large-scale lithological complexes related to source-connected faults are future marine hydrocarbon exploration targets in the Sichuan Basin. 展开更多
关键词 Sichuan Basin margin oil/gas whole petroleum system carbonate hydrocarbon accumulation hydrocarbon distribution law hydrocarbon exploration target
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Whole petroleum system and hydrocarbon accumulation model in shallow and medium strata in northern Songliao Basin,NE China
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作者 ZHANG He WANG Xiaojun +6 位作者 JIA Chengzao LI Junhui MENG Qi’an JIANG Lin WANG Yongzhuo BAI Xuefeng ZHENG Qiang 《Petroleum Exploration and Development》 SCIE 2023年第4期784-797,共14页
Based on the oil and gas exploration practice in the Songliao Basin,combined with the latest exploration and development data such as seismic,well logging and geochemistry,the basic geological conditions,oil and gas t... Based on the oil and gas exploration practice in the Songliao Basin,combined with the latest exploration and development data such as seismic,well logging and geochemistry,the basic geological conditions,oil and gas types and distribution characteristics,reservoir-forming dynamics,source-reservoir relationship and hydrocarbon accumulation model of the whole petroleum system in shallow and medium strata in the northern part of Songliao Basin are systematically studied.The shallow-medium strata in northern Songliao Basin have the conditions for the formation of whole petroleum system,with sufficient oil and gas sources,diverse reservoir types and well-developed transport system,forming a whole petroleum system centered on the source rocks of the Cretaceous Qingshankou Formation.Different types of oil and gas resources in the whole petroleum system are correlated with each other in terms of depositional system,lithologic association and physical property changes,and they,to a certain extent,have created the spatial framework with orderly symbiosis of shallow-medium conventional oil reservoirs,tight oil reservoirs and shale oil reservoirs in northern Songliao Basin.Vertically,the resources are endowed as conventional oil above source,shale oil/tight oil within source,and tight oil below source.Horizontally,conventional oil,tight oil,interlayer-type shale oil,and pure shale-type shale oil are developed in an orderly way,from the margin of the basin to the center of the depression.Three hydrocarbon accumulation models are recognized for the whole petroleum system in northern Songliao Basin,namely,buoyancy-driven charging of conventional oil above source,retention of shale oil within source,and pressure differential-driven charging of tight oil below source. 展开更多
关键词 Songliao Basin super basin whole petroleum system conventional oil reservoir tight oil shale oil hydrocarbon accumulation model orderly distribution differential accumulation
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Petroleum geology features and research developments of hydrocarbon accumulation in deep petroliferous basins 被引量:34
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作者 Xiong-Qi Pang Cheng-Zao Jia Wen-Yang Wang 《Petroleum Science》 SCIE CAS CSCD 2015年第1期1-53,共53页
As petroleum exploration advances and as most of the oil-gas reservoirs in shallow layers have been explored, petroleum exploration starts to move toward deep basins, which has become an inevitable choice. In this pap... As petroleum exploration advances and as most of the oil-gas reservoirs in shallow layers have been explored, petroleum exploration starts to move toward deep basins, which has become an inevitable choice. In this paper, the petroleum geology features and research progress on oil-gas reservoirs in deep petroliferous basins across the world are characterized by using the latest results of worldwide deep petroleum exploration. Research has demonstrated that the deep petroleum shows ten major geological features. (1) While oil-gas reservoirs have been discovered in many different types of deep petroliferous basins, most have been discovered in low heat flux deep basins. (2) Many types of petroliferous traps are developed in deep basins, and tight oil-gas reservoirs in deep basin traps are arousing increasing attention. (3) Deep petroleum normally has more natural gas than liquid oil, and the natural gas ratio increases with the burial depth. (4) The residual organic matter in deep source rocks reduces but the hydrocarbon expulsion rate and efficiency increase with the burial depth. (5) There are many types of rocks in deep hydrocarbon reservoirs, and most are clastic rocks and carbonates. (6) The age of deep hydrocarbon reservoirs is widely different, but those recently discovered are pre- dominantly Paleogene and Upper Paleozoic. (7) The porosity and permeability of deep hydrocarbon reservoirs differ widely, but they vary in a regular way with lithology and burial depth. (8) The temperatures of deep oil-gas reservoirs are widely different, but they typically vary with the burial depth and basin geothermal gradient. (9) The pressures of deep oil-gas reservoirs differ significantly, but they typically vary with burial depth, genesis, and evolu- tion period. (10) Deep oil-gas reservoirs may exist with or without a cap, and those without a cap are typically of unconventional genesis. Over the past decade, six major steps have been made in the understanding of deep hydrocarbon reservoir formation. (1) Deep petroleum in petroliferous basins has multiple sources and many dif- ferent genetic mechanisms. (2) There are high-porosity, high-permeability reservoirs in deep basins, the formation of which is associated with tectonic events and subsurface fluid movement. (3) Capillary pressure differences inside and outside the target reservoir are the principal driving force of hydrocarbon enrichment in deep basins. (4) There are three dynamic boundaries for deep oil-gas reservoirs; a buoyancy-controlled threshold, hydrocarbon accumulation limits, and the upper limit of hydrocarbon generation. (5) The formation and distribution of deep hydrocarbon res- ervoirs are controlled by free, limited, and bound fluid dynamic fields. And (6) tight conventional, tight deep, tight superimposed, and related reconstructed hydrocarbon reservoirs formed in deep-limited fluid dynamic fields have great resource potential and vast scope for exploration. Compared with middle-shallow strata, the petroleum geology and accumulation in deep basins are more complex, which overlap the feature of basin evolution in different stages. We recommend that further study should pay more attention to four aspects: (1) identification of deep petroleum sources and evaluation of their relative contributions; (2) preservation conditions and genetic mechanisms of deep high-quality reservoirs with high permeability and high porosity; (3) facies feature and transformation of deep petroleum and their potential distribution; and (4) economic feasibility evaluation of deep tight petroleum exploration and development. 展开更多
关键词 Petroliferous basin Deep petroleum geology features hydrocarbon accumulation petroleum exploration petroleum resources
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Multi-Stage Fluid Charging and Critical Period of Hydrocarbon Accumulation of the Sinian Dengying Formation in Central Sichuan Basin 被引量:2
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作者 XU Fanghao XU Guosheng +3 位作者 LIANG Jiaju YUAN Haifeng LIU Yong XU Fanggen 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第4期1549-1550,共2页
Objective The natural gas exploration of the Sinian reservoirs in the central Sichuan Basin has made a significant breakthrough in recent years, and has thus attracted much attention among geologists. The Sichuan Bas... Objective The natural gas exploration of the Sinian reservoirs in the central Sichuan Basin has made a significant breakthrough in recent years, and has thus attracted much attention among geologists. The Sichuan Basin is known to have complicated geological settings, which has experienced multiple stages of tectonic evolution, fluid charging and hydrocarbon accumulation. This research aims to determine the geochemical characteristics of each stage of fluids, the features and time interval of fluid activity in different geologic periods, and further to restore the critical period and geological age of the hydrocarbon accumulation. 展开更多
关键词 Multi-Stage Fluid Charging and Critical period of hydrocarbon accumulation of the Sinian Dengying Formation in Central Sichuan Basin
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Characteristics of Fluid Inclusions and Determination of Hydrocarbon Accumulation Period of Caofeidian 18-1/2Buried Hill Reservoirs in Bozhong Depression,Bohai Bay Basin
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作者 Xiaoping LUO Tengjiao SUN +4 位作者 Hairuo QING Zhongmin SHEN Xiaoxing GONG Zhiyao XIAN Chuan CAI 《Meteorological and Environmental Research》 CAS 2020年第2期65-67,共3页
The study area Caofeidian 18-1/2 structure is located in the Shadongnan structural belt at the southeast subduction end of the Shaleitian salient in the western Bohai Sea. The characteristics of reservoirs and fluid i... The study area Caofeidian 18-1/2 structure is located in the Shadongnan structural belt at the southeast subduction end of the Shaleitian salient in the western Bohai Sea. The characteristics of reservoirs and fluid inclusions from 13 core samples near the buried hills in the study area are studied,and regional geology and conditions for reservoir formation are analyzed to reveal the characteristics and the processes of reservoir formation. Phase I oil and gas inclusions are mainly developed,and the abundance of oil and gas inclusions in this period is high( GOI is about 15%). The homogenization temperature of the hydrocarbon-containing brine inclusions accompanying them is mainly 90-120 ℃ . The simulation results of burial history and thermal history show that the main charging period of oil and gas is the present Himalayan tectonic movement period since 8 Ma,and mainly through unconformities,faults,and drainage systems,they are migrated and accumulated into fault anticline traps of Dongying Formation mudstone( E_d). 展开更多
关键词 CHARACTERISTICS of fluid INCLUSIONS hydrocarbon accumulation period Buried HILL RESERVOIRS Caofeidian Bozhong depression
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Orderly coexistence and accumulation models of conventional and unconventional hydrocarbons in Lower Permian Fengcheng Formation,Mahu sag,Junggar Basin 被引量:7
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作者 ZHI Dongming TANG Yong +3 位作者 HE Wenjun GUO Xuguang ZHENG Menglin HUANG Liliang 《Petroleum Exploration and Development》 CSCD 2021年第1期43-59,共17页
By using the latest geological,seismic,drilling and logging data,this article studies the basic conditions for the formation of the total petroleum system and the orderly coexisting characteristics and accumulation mo... By using the latest geological,seismic,drilling and logging data,this article studies the basic conditions for the formation of the total petroleum system and the orderly coexisting characteristics and accumulation models of conventional&unconventional reservoirs in the Lower Permian Fengcheng Formation in the Junggar Basin.Controlled by thermal evolution,hydrocarbon generation and expulsion process of the high-quality source rocks in alkaline lake as well as the characteristics of multi-type reservoirs(conglomerate,sandstone,dolomite and shale),conventional structure-lithologic reservoirs and tight oil and shale oil reservoirs controlled by source-reservoir structure have been formed.On the plane,mature conventional reservoirs,medium-high mature tight oil,and medium-high mature shale oil reservoirs coexist orderly from the slope area around Mahu sag to the sag.Based on the orderly coexisting characteristics of conventional and unconventional reservoirs in the Fengcheng Formation,it is clear that oil and gas in the Fengcheng Formation accumulate continuously over a large area in three accumulation models:integrated source-reservoir,source-reservoir in close contact,and separated source-reservoir model.The three accumulation models differ in relationship between source-reservoir structure,reservoir lithology and spatial distribution,hydrocarbon migration,oil and gas type.It is pointed out that the conventional&unconventional oil and gas should be explored and developed as a whole to achieve an overall breakthrough of the total petroleum system.This study is expected to enrich the geological theory of oil and gas enrichment in continental basins and to provide an analogy for exploration and research in other hydrocarbon-rich sags. 展开更多
关键词 Junggar Basin Lower Permian Fengcheng Formation unconventional hydrocarbons orderly coexistence accumulation models shale oil total petroleum system
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Fluid inclusion evidence for petroleum accumulation in northern Qaidam Basin 被引量:5
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作者 YANG Yunfeng LI Xianqing +6 位作者 FENG Songbao WANG Kangdong KONG Longxi DONG Peng XU Feng PENG Dehua CHEN Yan 《Chinese Journal Of Geochemistry》 EI CAS 2010年第4期422-430,共9页
Based on the results of fluid inclusion study(microscopic characteristics,homogenization temperatures and grains with oil inclusions),the pool-forming time of the Nanbaxian and Mabei 1 oilfields in northern Qaidam Bas... Based on the results of fluid inclusion study(microscopic characteristics,homogenization temperatures and grains with oil inclusions),the pool-forming time of the Nanbaxian and Mabei 1 oilfields in northern Qaidam Basin was discussed in this paper.Fluid inclusions in northern Qaidam Basin are relatively abundant,including aqueous inclusions and hydrocarbon inclusions.These inclusions are small(5-10 μm),and mainly distributed in quartz fissures,overgrowths and cementations.The abundances of grains with oil inclusions(GOI) are commonly low.The GOI values of most samples are between 2.0%-10.5%,and those of about 40 percent of total samples exceed 5%.The homogenization temperatures of fluid inclusions in different samples are markedly dissimilar,indicating that these inclusions were formed in different periods.According to the measured homogenization temperatures of fluid inclusions and in combination with burial history and thermal evolution history,the Nanbaxian and Mabei 1 oilfields are deduced,which have experienced two hydrocarbon charging periods,with the former of N1-N21 and N22-N23,and the latter of N1 and N1 end-N2,respectively. 展开更多
关键词 柴达木盆地北缘 流体包裹体 油气聚集 证据 均一温度 印度政府 玛北油田 石油包裹体
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Basic principles of the whole petroleum system
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作者 JIA Chengzao PANG Xiongqi SONG Yan 《Petroleum Exploration and Development》 SCIE 2024年第4期780-794,共15页
This paper expounds the basic principles and structures of the whole petroleum system to reveal the pattern of conventional oil/gas-tight oil/gas-shale oil/gas sequential accumulation and the hydrocarbon accumulation ... This paper expounds the basic principles and structures of the whole petroleum system to reveal the pattern of conventional oil/gas-tight oil/gas-shale oil/gas sequential accumulation and the hydrocarbon accumulation models and mechanisms of the whole petroleum system.It delineates the geological model,flow model,and production mechanism of shale and tight reservoirs,and proposes future research orientations.The main structure of the whole petroleum system includes three fluid dynamic fields,three types of oil and gas reservoirs/resources,and two types of reservoir-forming processes.Conventional oil/gas,tight oil/gas,and shale oil/gas are orderly in generation time and spatial distribution,and sequentially rational in genetic mechanism,showing the pattern of sequential accumulation.The whole petroleum system involves two categories of hydrocarbon accumulation models:hydrocarbon accumulation in the detrital basin and hydrocarbon accumulation in the carbonate basin/formation.The accumulation of unconventional oil/gas is self-containment,which is microscopically driven by the intermolecular force(van der Waals force).The unconventional oil/gas production has proved that the geological model,flow model,and production mechanism of shale and tight reservoirs represent a new and complex field that needs further study.Shale oil/gas must be the most important resource replacement for oil and gas resources of China.Future research efforts include:(1)the characteristics of the whole petroleum system in carbonate basins and the source-reservoir coupling patterns in the evolution of composite basins;(2)flow mechanisms in migration,accumulation,and production of shale oil/gas and tight oil/gas;(3)geological characteristics and enrichment of deep and ultra-deep shale oil/gas,tight oil/gas and coalbed methane;(4)resource evaluation and new generation of basin simulation technology of the whole petroleum system;(5)research on earth system-earth organic rock and fossil fuel system-whole petroleum system. 展开更多
关键词 whole petroleum system theory structure of whole petroleum system sequential accumulation pattern hydrocarbon accumulation model of the whole petroleum system self-containment hydrocarbon accumulation mechanism geological model and flow model of shale and tight oil/gas
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Exploration discovery and hydrocarbon accumulation characteristics of the Doseo strike-slip and inverted basin, Chad
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作者 DOU Lirong XIAO Kunye +4 位作者 DU Yebo WANG Li ZHANG Xinshun CHENG Dingsheng HU Ying 《Petroleum Exploration and Development》 CSCD 2022年第2期247-256,共10页
Several international oil companies had conducted petroleum exploration, but failed to make any commercially viable discoveries in the Doseo Basin for over 30 years. In this article, an integrated analysis, based on t... Several international oil companies had conducted petroleum exploration, but failed to make any commercially viable discoveries in the Doseo Basin for over 30 years. In this article, an integrated analysis, based on the latest seismic and drilling data combined with exploration practice and tectonic, sedimentary as well as petroleum-geological characteristics of the basin, has been conducted with the aim to disclose the key factors of hydrocarbon accumulation and enrichment and then to find the potential petroleum plays. The Doseo Basin in Chad is a Meso-Cenozoic lacustrine rift basin developed on the Precambrian crystalline basement in the Central African Shear Zone. It is a half graben rift controlled by the strike-slip fault at the northern boundary, and can be divided into two sub-basins, an uplift and a slope. The basin experienced two rifting periods in the Cretaceous and was strongly inverted with the erosion thickness of 800–1000 m during the Eocene, and then entered the depression and extinction period. Structurally, a large number of normal faults and strike-slip faults are identified in the basin, and the boundary faults are inverted faults with normal at first. The main structural styles include inverted anticlines, fault noses, complex fault-blocks and flower structures. The Lower Cretaceous is the main sedimentary strata, which are divided into the Mangara Group, Kedeni, Doba and Koumra Formations from bottom to up. Two transgressive-regressive cycles developed in the Lower Cretaceous indicates with mainly lacustrine, fluvial, delta, braided-delta, fan-delta sandstone and mudstone. The effective source rock in the basin is the deep-lacustrine mudstone of the Lower Cretaceous containing the type Ⅰ and type Ⅱ;organic matters. Furthermore, Inverted anticlines and fault-complicated blocks comprise the main trap types and the Kedeni Uplift is the most favorable play, followed by the Northern Steep Slope and Southern Gentle Slope. Lateral sealing capacity of faults controls the hydrocarbon abundance. 展开更多
关键词 Doseo Basin rift basin STRIKE-SLIP inverted structure petroleum system hydrocarbon accumulation characteristics exploration discovery
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Characteristics and hydrocarbon accumulation model of Paleogene whole petroleum system in western depression of Qaidam Basin,NW China
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作者 LIU Guoyong WU Songtao +6 位作者 WU Kunyu SHEN Yue LEI Gang ZHANG Bin XING Haoting ZHANG Qinghui LI Guoxin 《Petroleum Exploration and Development》 SCIE 2024年第5期1097-1108,共12页
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
关键词 whole petroleum system shale oil Yingxiongling sag ultra-thick mountain-style continuous hydrocarbon accumulation Paleogene western depression of Qaidam Basin
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Hydrocarbon Charging and Accumulation Process of the Large Bozhong19-6 Condensate Gas Reservoirs in the Southwestern Bozhong Sub-Basin,Bohai Bay Basin,China
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作者 Quanyun Miao Changgui Xu +4 位作者 Fang Hao Minjunshi Xie Qi Wang Jie Yin Huayao Zou 《Journal of Earth Science》 SCIE CAS CSCD 2024年第2期613-630,共18页
The Bozhong19-6(BZ19-6)condensate gas reservoirs,located in the southwestern Bozhong sub-basin,Bohai Bay Basin,China,were paleo-oil reservoirs in the geological past and have undergone at least three successive hydroc... The Bozhong19-6(BZ19-6)condensate gas reservoirs,located in the southwestern Bozhong sub-basin,Bohai Bay Basin,China,were paleo-oil reservoirs in the geological past and have undergone at least three successive hydrocarbon charging events.The hydrocarbon migration and accumulation process of“early oil and late gas”has occurred in the current reservoirs.At the end of the sedimentation of the Guantao Formation(N_(1)g,∼12 Ma),the reservoirs began to fill with first stage low-moderate mature crude oil.At the late stage of the Lower Minghuazhen Formation(N_(1)ml)(∼6.7 Ma),the reservoirs were largely charged with second stage high mature crude oil.Since the deposition of the upper Minghuazhen Formation(N_(2)m^(u),∼5.1 Ma),the paleo-oil reservoirs were transformed into shallow Neogene reservoirs due to the reactivation of basement faults.From the late stage of the N_(2)m^(u)to the present day(∼2.8–0 Ma),the reservoirs were rapidly filled by natural gas within a short period.In addition,analysis of the formation of the reservoir bitumen and the conspicuous loss of the lower molecular weight n-alkanes in the crude oil reveal that the injection of a large amount of gas in the late stage caused gas flushing of the early charged oil. 展开更多
关键词 Bohai Bay Basin BZ19-6 condensate gas reservoirs fluid inclusions hydrocarbon charging and accumulation petroleum geology
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Main Controlling Factors and Accumulation Model of Chang 9 Reservoir in Northwest Ordos Basin, China
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作者 Zhang Weigang Chen Gang 《China Oil & Gas》 CAS 2019年第6期39-44,共6页
In northwestern Ordos Basin, the Triassic reservoir Chang 9 has favorable reservoir forming conditions, extensive reservoir development, and huge potential for oil exploration and exploitation. Studying the main contr... In northwestern Ordos Basin, the Triassic reservoir Chang 9 has favorable reservoir forming conditions, extensive reservoir development, and huge potential for oil exploration and exploitation. Studying the main controlling factors and accumulation model of Chang 9 reservoir in this area can provide a basis for the production targets, and assist in formulating reasonable development technology policy. In this paper, to explore and summarize the hydrocarbon accumulation model, the Chang 9 reservoir were analyzed from the aspects of oil source, fracture, oil migration, structure, lithology and reservoir physical properties for the main controlling factors in this area. Organic geochemical and geological comprehensive analysis that the oil-source of the Chang 9 reservoir in the northwest of Ordos Basin is derived from Chang 7 hydrocarbon source rocks. The fractures provide a sound channel for the "vertical multi-point filling" of the oil source from Chang 7 to Chang 9. The crude oil migrates vertically from Chang 7 to Chang 9, then expands horizontally to form a reservoir. Structures play an important role in controlling the distribution of reservoirs, the control by sand in small layer and physical property is also obvious. This paper creatively establishes the reservoir accumulation model of Chang 9 in northwest of Ordos Basin, which is characterized by Vertical multi-point filling, horizontal expansion becomes oil pool. It reveals the genetic mechanism of the development of Chang 9 multi-reservoir in the study area, which provides guidance for exploration and evaluation deployment. 展开更多
关键词 Ordos Basin Chang 9 reservoir petroleum accumulation main control factors hydrocarbon pooling patterns
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中国含油气盆地不同构造样式及其油气地质意义
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作者 郭齐军 邓铭哲 +3 位作者 张晨雨 单帅强 倪春华 王斌 《石油与天然气地质》 EI CAS CSCD 北大核心 2024年第3期609-621,共13页
多类型构造样式的控油气作用是油气勘探面临的重要科学问题。基于前人研究认识成果、勘探经验的总结,对中国含油气盆地内不同构造样式的演化及成因模式进行了系统梳理,解析了不同构造样式对油气成藏的控制作用。研究认为:①中国含油气... 多类型构造样式的控油气作用是油气勘探面临的重要科学问题。基于前人研究认识成果、勘探经验的总结,对中国含油气盆地内不同构造样式的演化及成因模式进行了系统梳理,解析了不同构造样式对油气成藏的控制作用。研究认为:①中国含油气盆地主要发育伸展构造、收缩构造、走滑构造和叠加构造4种构造样式。伸展构造主要控制盆地建造过程,收缩构造、走滑构造主要控制盆地改造过程。②不同构造类型的控油气作用差异明显,伸展构造主要控制盆地烃源岩、有利储集体和盖层等油气聚集成藏要素的发育,收缩构造、走滑构造和叠加构造主要控制油气运移与圈闭条件的演化。③在构造与其他要素复合作用下,断裂自身也可以作为一类储集体,成为油气聚集的空间,这一类断裂油气藏是当前油气勘探的新领域。 展开更多
关键词 控油气作用 伸展构造 收缩构造 走滑构造 叠加构造 构造样式 石油勘探 含油气盆地
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杭锦旗地区二叠系储层油气成藏期次及流体势特征 被引量:1
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作者 李晓光 倪智勇 +4 位作者 宋到福 张旋 韩子敬 张威 安川 《吉林大学学报(地球科学版)》 CAS CSCD 北大核心 2024年第4期1110-1123,共14页
杭锦旗地区是鄂尔多斯盆地北部重要的含油气区,油气成藏期次及流体势研究有利于探究油气充注的世代以及流体势的分布特征,并进一步判定成藏期油气的运移方向。本文以什股壕区块和十里加汗区块5口井的二叠系下石盒子组盒一段储层砂岩为... 杭锦旗地区是鄂尔多斯盆地北部重要的含油气区,油气成藏期次及流体势研究有利于探究油气充注的世代以及流体势的分布特征,并进一步判定成藏期油气的运移方向。本文以什股壕区块和十里加汗区块5口井的二叠系下石盒子组盒一段储层砂岩为研究对象,基于流体包裹体分析厘定油气成藏期次,并结合流体势理论计算研究区关键成藏期的流体势并揭示油气的运移方向。研究结果显示:什股壕区块盒一段储层油气的成藏时间为132~102 Ma;十里加汗区块盒一段储层油气的成藏时间为132~101 Ma。杭锦旗北部的什股壕盒一段储层油气的流体势为18 128~22 872 J/kg;杭锦旗南部的十里加汗区块盒一段储层油气的流体势为22 975~27 153 J/kg。本文认为研究区二叠系盒一段储层油气成藏时间在早白垩世,十里加汗区块整体的流体势要高于什股壕区块,油气具备由南部向北部运移的趋势。 展开更多
关键词 流体包裹体 成藏期 流体势 油气运移 储层 杭锦旗地区 鄂尔多斯盆地
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四川盆地海相碳酸盐岩全油气系统成藏特征与有序分布规律 被引量:1
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作者 郭旭升 黄仁春 +3 位作者 张殿伟 李双建 申宝剑 刘天甲 《石油勘探与开发》 EI CAS CSCD 北大核心 2024年第4期743-758,共16页
基于四川盆地海相油气勘探现状和进展,以主力烃源岩为核心,依据成藏要素组合关系划分四川盆地海相碳酸盐岩全油气系统,并分析各个含油气系统的成藏特征,总结常规-非常规一体化成藏规律,指明未来有利勘探方向。研究认为:(1)受多期伸展-... 基于四川盆地海相油气勘探现状和进展,以主力烃源岩为核心,依据成藏要素组合关系划分四川盆地海相碳酸盐岩全油气系统,并分析各个含油气系统的成藏特征,总结常规-非常规一体化成藏规律,指明未来有利勘探方向。研究认为:(1)受多期伸展-聚敛构造旋回的控制,四川盆地海相发育3套区域性烃源岩和3套区域性盖层,可划分出寒武系、志留系和二叠系3个全油气系统。3个全油气系统以独立成藏为主,单一系统内天然气具有亲缘性。同时,局部地区大型断裂带贯穿多套全油气系统,形成断控复式全油气系统。(2)全油气系统内普遍发育“陆棚相页岩气聚集—台缘相控气藏—台内断-相共控型气藏”的成藏序列,具有立体成藏、有序分布的规律。(3)优质烃源岩是大气田形成的基础,全油气系统内天然气具有近源和源内富集的规律,规模性储层的发育与保持是天然气富集的保障,“多元生烃、油气转化、动态调整”是海相油气成藏的特色,良好的保存条件是天然气成藏的关键。(4)大型台缘带礁滩相带、深层页岩气与通源断裂相关的大型岩性复合体是未来四川盆地海相油气勘探的主要方向。 展开更多
关键词 四川盆地 海相油气 全油气系统 碳酸盐岩油气成藏特征 油气分布规律 油气勘探方向
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全油气系统理论基本原理
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作者 贾承造 庞雄奇 宋岩 《石油勘探与开发》 EI CAS CSCD 北大核心 2024年第4期679-691,共13页
通过阐释全油气系统基本原理,并阐明全油气系统的结构,进而揭示常规油气—致密油气—页岩油气序列成藏规律以及全油气系统成藏模式与成藏机理;此外,阐述了页岩油气-致密油气储层地质模型、流动模型与开发生产机理,并给出了进一步的研究... 通过阐释全油气系统基本原理,并阐明全油气系统的结构,进而揭示常规油气—致密油气—页岩油气序列成藏规律以及全油气系统成藏模式与成藏机理;此外,阐述了页岩油气-致密油气储层地质模型、流动模型与开发生产机理,并给出了进一步的研究方向。研究表明:(1)全油气系统的主要结构包括3类流体动力场、3种油气藏与油气资源,以及两种成藏作用。常规油气—致密油气—页岩油气具有形成时间和空间分布的有序性、基于成因机理的序列合理性,表现出“序列成藏”的地质规律。(2)全油气系统成藏模式可以分为“碎屑岩盆地成藏模式”与“碳酸盐岩盆地(层系)成藏模式”两类。非常规油气的聚集成藏是一种“自封闭成藏”,油气自封闭作用的微观来源是分子间作用力(范德华力)。(3)非常规油气生产实践证实,页岩油气-致密油气储层地质模型、流动模型与开发生产机理是一个全新的领域,极为复杂,有待进一步研究。页岩油气一定是中国油气资源中最重要的资源接替。(4)进一步研究方向包括:碳酸盐岩盆地全油气系统特征及复合盆地演化源储耦合规律;页岩油气与致密油气运移、成藏与开发生产的流动机理;深层超深层页岩油气、致密油气和煤层气油气地质特征与富集规律;全油气系统油气资源评价与新一代盆地模拟技术;地球系统—地球有机岩与化石能源系统—全油气系统研究。 展开更多
关键词 全油气系统理论 全油气系统结构 序列成藏规律 全油气系统成藏模式 自封闭成藏机理 页岩油气-致密油气地质模型与流动模型
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库车坳陷阿瓦特地区巴西改组构造变形与油气成藏特征
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作者 王莹莹 桂丽黎 +4 位作者 鲁雪松 刘汇川 莫涛 周慧 姜林 《新疆石油地质》 CAS CSCD 北大核心 2024年第6期631-641,共11页
库车坳陷前陆冲断带构造变形主要发生在喜马拉雅运动中—晚期,前人确定了盐上浅层褶皱构造变形的启动时间,但对盐下冲断构造变形与油气成藏时间的研究缺少绝对定年的约束。以库车坳陷阿瓦特地区为例,利用岩相学观察、方解石U-Pb定年、... 库车坳陷前陆冲断带构造变形主要发生在喜马拉雅运动中—晚期,前人确定了盐上浅层褶皱构造变形的启动时间,但对盐下冲断构造变形与油气成藏时间的研究缺少绝对定年的约束。以库车坳陷阿瓦特地区为例,利用岩相学观察、方解石U-Pb定年、流体包裹体分析等资料,分析阿瓦特地区下白垩统巴西改组储集层成岩作用、方解石脉体形成时间及油气成藏过程,确定了阿瓦特地区巴西改组构造变形和油气成藏时间。结果表明:阿瓦特地区巴西改组储集层发育2期方解石,早期方解石胶结物形成年龄为(98.0±14.0)Ma,晚期方解石脉体形成年龄为(3.7±1.0)Ma,代表了盐下冲断构造变形时间;方解石脉体中发育1期油包裹体和1期气包裹体,通过流体包裹体均一温度、埋藏史和热史,推断油充注时间为4.0—3.0 Ma,天然气充注时间为3.0—1.0 Ma,早期油藏经历了上新世晚期气洗改造,形成现今的凝析气藏。 展开更多
关键词 塔里木盆地 库车坳陷 阿瓦特地区 构造变形 流体包裹体 油气成藏期次 成藏模式
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柴达木盆地西部坳陷古近系全油气系统特征与油气成藏模式
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作者 刘国勇 吴松涛 +6 位作者 伍坤宇 沈月 雷刚 张斌 邢浩婷 张庆辉 李国欣 《石油勘探与开发》 EI CAS CSCD 北大核心 2024年第5期951-961,共11页
基于柴达木盆地西部坳陷油气勘探实践,结合地震、钻井、测井及地球化学等资料,对柴西坳陷古近系全油气系统基本地质条件、油气分布特征、成藏运聚动力与成藏模式开展研究。研究表明:柴西坳陷发育全球独具特色的“巨厚山地式”全油气系统... 基于柴达木盆地西部坳陷油气勘探实践,结合地震、钻井、测井及地球化学等资料,对柴西坳陷古近系全油气系统基本地质条件、油气分布特征、成藏运聚动力与成藏模式开展研究。研究表明:柴西坳陷发育全球独具特色的“巨厚山地式”全油气系统,围绕古近系下干柴沟组上段烃源岩层系,从盆缘向湖盆中心,平面上构造油气藏、岩性油气藏、页岩油与页岩气有序分布、纵向上叠置连片。柴西坳陷古近系全油气系统具有3方面独特性:(1)低有机质丰度烃源岩“低碳富氢”,单位有机碳生烃能力强;(2)咸化湖盆沉积巨厚,坳陷中心沉积以混源为主,岩相与储集空间纵横向变化快;(3)喜马拉雅期走滑挤压强改造,山地式全油气系统油气差异富集。柴西坳陷古近系全油气系统是源储盖与输导体系协调演化的结果,具有低碳富氢烃源岩全过程生烃、巨厚储集体全坳陷沉积、挤压走滑断裂体促进油气全方位调整、常规-非常规油气全系列分布的特征。受控于喜马拉雅期强构造运动影响,柴西坳陷经历了先拗后隆的演化过程,在湖盆中心发育广义页岩油,在超过2 000 m厚度的沉积体系中,油气连续分布于烃源岩层系内的薄层状灰云岩与紧邻生烃灶的藻灰岩中,白云石晶间孔、纹层缝与断溶体是有效储集空间。相关认识可进一步丰富和发展中国陆相湖盆全油气系统理论,并为柴达木盆地油气综合勘探提供理论指导与技术支持。 展开更多
关键词 全油气系统 页岩油 英雄岭凹陷 巨厚山地式 连续型油气聚集 古近系 柴西坳陷
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柴达木盆地柴西坳陷古近系-新近系石油地质特征与油气环带状分布模式
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作者 刘国勇 薛建勤 +6 位作者 吴松涛 伍坤宇 张博策 邢浩婷 张娜 庞鹏 朱超 《石油与天然气地质》 EI CAS CSCD 北大核心 2024年第4期1007-1017,共11页
柴达木盆地柴西坳陷古近系-新近系石油资源丰富,常规石油与页岩油分别占全盆地常规石油资源的82.4%和非常规页岩油资源的100%。通过研究沉积储层与石油地质特征,剖析柴西坳陷古近系-新近系沉积相和油气成藏特征,提出了油气环带状分布模... 柴达木盆地柴西坳陷古近系-新近系石油资源丰富,常规石油与页岩油分别占全盆地常规石油资源的82.4%和非常规页岩油资源的100%。通过研究沉积储层与石油地质特征,剖析柴西坳陷古近系-新近系沉积相和油气成藏特征,提出了油气环带状分布模式。研究认为:①柴西坳陷古近系-新近系沉积相带呈“环带状”分布。外环带为三角洲与滩坝相,以碎屑岩沉积为主,碳酸盐岩沉积较少,发育砾岩、含砾粗砂岩和中-粗砂岩储层。中环带以滨浅湖灰云坪、灰泥坪相沉积为主,发育细砂岩、粉砂岩、灰云岩及藻灰岩,藻灰岩是中环带最具特色且孔隙度最高的岩相类型。内环带以半深湖-深湖相细粒混积岩沉积为主,发育深灰、暗灰色细粒沉积岩,是古近系-新近系最主要的烃源岩发育区。②不同沉积相环带内油藏类型不同。外环带距离生烃灶较远,油气经断层输导在砾岩、粗砂岩等碎屑岩中聚集,形成构造油气藏。中环带紧邻主力生烃灶,油气经断层输导在藻灰岩等碳酸盐岩储层中储集,形成构造-岩性油气藏。内环带油气短距离运移或原位滞留在细粒混积岩中源-储一体,形成页岩油。柴西坳陷从源外到源内,构造-岩性油气藏与页岩油纵向上相互叠置,平面上构造油气藏、构造-岩性油气藏与页岩油呈环带状分布。 展开更多
关键词 有序聚集 环带状分布 全油气系统 英雄岭页岩油 柴西坳陷 柴达木盆地 青藏高原
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鄂尔多斯盆地东南部大宁—吉县区块上古生界盒8段流体包裹体特征及成藏意义
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作者 张佳琦 赵靖舟 +1 位作者 李军 杨晓 《西安石油大学学报(自然科学版)》 CAS 北大核心 2024年第3期34-41,142,共9页
鄂尔多斯盆地东南部大宁—吉县区块相较于盆地内部,其构造活动强烈,地层抬升幅度大,有机质成熟度高,导致研究区与盆地内部天然气成藏存在差异。利用单偏光显微镜、激光拉曼光谱仪及冷热台等实验仪器,对研究区盒8段13块流体包裹体样品开... 鄂尔多斯盆地东南部大宁—吉县区块相较于盆地内部,其构造活动强烈,地层抬升幅度大,有机质成熟度高,导致研究区与盆地内部天然气成藏存在差异。利用单偏光显微镜、激光拉曼光谱仪及冷热台等实验仪器,对研究区盒8段13块流体包裹体样品开展了岩相学显微观察、测温测盐和古压力恢复,并结合地层埋藏史—热史厘定了大宁—吉县区块盒8段天然气成藏期次及成藏过程。结果表明,烃类包裹体类型有CH_(4)+CO_(2)包裹体、CH_(4)包裹体及含碳质沥青包裹体。前两类烃类包裹体对应的共生盐水包裹体均一温度介于90~160℃,具有双峰分布特征,第3类包裹体形成时期温度较高,成岩作用阶段已达到晚期,几乎不发育与其伴生的盐水包裹体,通过计算得出含碳质沥青反射率介于2.79%~3.32%,处于高成熟阶段,为原油裂解形成。综合分析表明研究区天然气存在三期充注成藏过程:第Ⅰ期共生盐水包裹体均一温度分布区间为90~120℃,天然气充注期距今175~155 Ma,古压力系数达到1.43,对应于早侏罗世晚期-晚侏罗世早期;第Ⅱ期共生盐水包裹体均一温度区间为130~160℃,天然气充注期距今145~110 Ma,为主成藏期,充注完成时古压力系数达1.57,对应于早白垩世;第Ш期为裂解期,烃类包裹体为含碳质沥青包裹体,形成时的地层温度高于200℃,其成因为原油在早白垩世末裂解形成,古压力系数增加到2.0,距今110~100 Ma。 展开更多
关键词 鄂尔多斯盆地 大宁—吉县 盒8段 流体包裹体 压力演化 成藏期次 成藏过程
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