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Organic-Inorganic Interaction Recorded by Polycyclic Aromatic Steranes in Continental Epithermal Ore Deposits

Acta Geologica Sinica(English Edition) 2023年第1期97卷 327-336页

作者： XU Huiyuan LIU Quanyou jin zhijun {2. Dongya MENG Qingqiang LI Pengpeng {2. Biqing state key {2. of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing 100083China petroleum Exploration&Production Research Institute SINOPECBeijing 100083China Institute of Energy School of Earth cand Space SciencesPeking UniversityBeijing 100871China

Continental epithermal ore deposits are commonly associated with sedimentary organic matter,oils or solid *** organics embedded in mineral deposits can convey valuable information of the ore ***,the extent to which the formation of ore minerals was recorded by organic compounds remains largely unknown,as also is how metal-rich ores interfere with the molecular proxies in the temperature regime envisaged for hydrothermal *** molecular compositional changes of various polycyclic aromatic steranes and polycyclic aromatic hydrocarbons and compounds derived from the jinding Pb/Zn deposit,SW china provide new *** regular steranes are present as *** transformation from polycyclic aromatic steranes to unsubstituted polycyclic aromatic hydrocarbons is observed to show an increased trend with increasing hydrothermal alteration levels;this is consistent with the transformation from unsubstituted polycyclic aromatic hydrocarbons to heterocyclic ***(aromatization)of polycyclic biological compounds and hydrodecyclization(dearomatization)of polycyclic aromatic compounds are two important reaction pathways in hydrothermal systems with moderate *** detailed investigation of organicinorganic interactions of two groups of polycyclic compounds with metal-rich ores provides insights into the questions on how and to what extent the formation of Pb/Zn deposits can be recorded by *** work will improve our understanding of carbon reduction,oxidation or condensation in the deep Earth and the carbon exchange between the Earth's crust and mantle,and may shed light on the processes for ultra-deep hydrocarbon exploration.

关键词： petroleum resources organic-inorganic interaction biomarker polycyclic compounds hydrothermal environment

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Process and Mechanisms of Deep Fluid Effects on Hydrocarbon Generation and Pore Space in Shale:A Case Study from the Mesoproterozoic Xiamaling Formation in the Zhaojiashan Section

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Acta Geologica Sinica(English Edition) 2022年第4期96卷 1342-1352页

作者： MENG Qingqiang PANG Qian HU Guang jin zhijun {2. Dongya LIU Jiayi ZHANG Chuanwen state key {2. of Shale Oil and Gas Enrichment Mechanisms and Effective Development SINOPECBeijing 100083China petroleum Exploration and Product Research Institute SinopecBeijing 102206China School of Geoscience and Technology Southwest Petroleum UniversityChengdu 637001China Institute of Energy Peking UniversityBeijing 100871China School of Energy Chinese University of Geosciences(Beijing)Beijing 100083China

Heat carried by deep fluid might greatly affect hydrocarbon generation and pore space in *** intrusion carrying high levels of heat may be a means by which to explore the influence of deep fluid on shale *** study evaluates hydrocarbon generation and analyzed the evolution of shale storage space in the third member of the Xiamaling Formation in the Zhaojiashan section,Hebei Province,based on experimental data such as TOC,SEM,VRo,low-temperature N_(2.adsorption and high-pressure mercury *** results show that the dyke intrusion reduced the shale TOC content drastically―by up to 77%―and also induced instantaneous hydrocarbon generation over a range about 1.4 times the thickness of the ***,the dyke intrusion might transform organic pores in surrounding shales into inorganic *** were two shale porosity peaks:one appeared when VRo=2.0%,caused by the increase of organic pores as thermal maturity increased,the other occurred when the VRo value was between 3%and 4%,caused by the increase of inorganic mineral *** can be concluded that dyke intrusion can be an effective tool with which to study how deep fluid affects instantaneous hydrocarbon generation and pore space in shale.

关键词： deep fluid hydrocarbon generation thermal effect pore Xiamaling Formation

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Using in situ REE analysis to study the origin and diagenesis of dolomite of Lower Paleozoic,Tarim Basin

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Science china Earth Sciences 2009年第5期52卷 681-693页

作者： WANG XiaoLin jin zhijun HU WenXuan ZHANG JunTao QIAN YiXiong {2. jingQuan LI Qing state key {2. for Mineral Deposits Research School of Earth Sciences and EngineeringNanjing UniversityNanjing 210093China petroleum Exploration and Development Institute of SINOPEC Beijing 100083China SINOPEC Northwest Oil Field Branch Urumqi 830011China Institute of Geology and Geophysics Chinese Academy of ScienceBeijing 100029China

In situ REE concentrations of various dolomites from Tarim Basin were obtained by LA-ICP-MS analysis,and the data were normalized to standard seawater(Seawater Normalized=SWN).Most of the samples have a ΣREE range of less than 2. *** samples show similar REESWN distributions with heavy REE depletion,and positive Ce anomaly,which indicates that they have the same dolomitization fluids(seawater).According to the origin and diagenetic process of dolomite,two types of dolomite are determined and described as follows:1) syndepositional dolomite,with the highest REE concentrations(more than 2. ppm),the cores of which are more enriched in REE compared with their cortexes,indicating that they underwent the dolomitization of calcareous sediments by hypersaline and subsequent diagenesis decreased the REE content of the cortex because of the low REE concentration of the diagenetic fluids;2. diagenetic dolomite,which can be subdivided into four groups.(1) burial dolomite which has higher REE concentrations than limestone,but lower than syndepositional *** shows that pore fluids with high salinity dolomitized the pre-existing limestone;(2. void filling dolomite which has the similar REE patterns with the matrix *** addition,the Eu anomaly is not obvious,suggesting that the dolomitization fluids originated from the diagenetic fluids;(3) recrystallized dolomite,whose REE concentration was obviously decreased,indicating that the REE concentration was decreased during the recrystallization processes;and(4) hydrothermal altered void-filling dolomite,which has the lowest REE concentration,but obvious positive Eu anomaly,reflecting its hydrothermal activity related ***,the diverse REE signatures,which were recorded in different dolomites,retain the information of their formation conditions and subsequent diagenetic *** situ REE analysis of dolomite is an effective probe into the origin and diagenetic process of dolomite.

关键词： dolomite origin diagenesis in situ REE distribution Lower Paleozoic Tarim Basin

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External Hydrogen Index: A New Factor for Hydrocarbon resource Assessment and its Calculation Method

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Acta Geologica Sinica(English Edition) 2017年第6期91卷 2336-2337页

作者： MENG Qingqiang SU Yingxian jin zhijun {2. Dongya LIU Quanyou Xu Bo state key {2. of Shale Oil and Gas Enrichment Mechanisms and Effective Development Shandong Provincial key laboratory of Depositional Mineralization and Sedimentary Mineral Shandong University of Science and Technology Sediment-Tectonic and Reservoir laboratory PEPRIS Jidong Oilfield PetroChina

Objective Traditional oil and gas theory considers that hydrocarbon generation process is a hydrodeoxygenation reaction of organic matter （OM）. Thus, the supply condition of hydrogen controls the hydrocarbon generation ability of OM. Those factors of TOC and hydrogen index （IH） are playing important roles for calculating potential petroleum resources. The factor IH mainly emphasizes the hydrogen condition of the source rock itself. However, it has been proved by simulation experiments that external hydrogen such as hydrogen-bearing rock （olivine）, water and hydrogen gas can improve the hydrocarbon productivity of source rock, and the effect of external hydrogen on hydrocarbon productivity has been poorly concerned under current resource assessment method. Therefore, this work proposed a new resource assessment factor of IEH in an effort to address this problem.

关键词： Hydrocarbon resource Assessment resource Assessment

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REE Compositions of Lower Ordovician Dolomites in Central and North Tarim Basin,NW china:A Potential REE Proxy for Ancient Seawater

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Acta Geologica Sinica(English Edition) 2008年第3期82卷 610-621页

作者： ZHANG Xuefeng HU Wenxuan jin zhijun ZHANG Juntao QIAN Yixiong {2. jingquan {2. Dongya WANG Xiaolin XIE Xiaomin state key {2. of petroleum resources and prospecting China University of Petroleum Beijing 102249 state key {2. of Mineral Deposits Research Nanjing University Nanjing 210093 petroleum Exploration and Development Institute ofSINOPEC Beijing 100083 Western Branch Institute SINOPEC Exploration and Production Research Institute Uriimqi 830011 Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029

Rare earth element compositions of Lower Ordovician dolomites in the Central and Northern Tarim Basin are studied. Most dolomite samples are more or less contaminated by clay minerals. Their rare earth element compositions have been consequently changed, showing both seawater-like and non-seawater-like features. The clay contamination should be disposed before the REE data are used. Through ICP-MS and ICP-AES analyses, the REE features are well documented. The clay contamination is quantitatively determined by microscopic investigation, trace elements and REE contents. The dolomites, at least in the Tarim Basin, are thought to be pure when their total LREE contents are less than 3×10^-6. Through comparison, the pure dolomites show similarities in REE patterns but differences in REE contents with co-existing pure limestone, which indicates that dolomitization may slightly change the REE compositions. Nevertheless, whatever the change is, the pure dolomites may act as a potential REE proxy for Ordovician seawater, which would be significant for ancient massive dolomite strata that lack limestone.

关键词： dolomite REE clay contamination Tarim Basin

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Organic-rich formation and hydrocarbon enrichment of lacustrine shale strata:A case study of Chang 7 Member

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Science china Earth Sciences 2022年第1期65卷 118-138页

作者： Quanyou LIU Peng LI zhijun jin Yuewu SUN Guang HU Dongya {2. Zhenkai HUANG Xinping LIANG Rui ZHANG Jiayi LIU state key {2. of Shale Oil and Gas Enrichment Mechanisms and Effective Development SINOPECBeijing 102206China petroleum Exploration and Production Research Institute S1NOPECBeijing 102206China Institute of Energy Peking UniversityBeijing 100871China Research Center of Palaeontology and Stratigraphy Jilin UniversityChangchun 130026China School of Geoscience and Technology Southwest Petroleum UniversityChengdu 610500China

Lacustrine shale is an important target for the exploration of unconventional oil and gas in china beyond marine shale ***,the formation environment of lacustrine shale differs from that of marine shale,resulting in a different reservoir composition,organic matter,oil and gas content,and hydrocarbon *** this study,the Chang 7 shale of the Yanchang Formation in the Ordos Basin was used to analyze the effect of volcanic activity on the paleoproductivity and preservation conditions during the formation of lacustrine *** results show that algae and bacteria were developed before the *** the eruption,the number of bacteria declined,but the increased prosperity of algae reflects that the volcanic activity enhanced ancient *** sulfate generated by volcanic activity promotes bacterial sulfate reduction,and the produced H_(2.S leads to a strong reducing environment in the waterbody,which is conducive to the preservation of organic *** geochemical analysis shows that the black shale in the shale strata has a high total organic carbon(TOC)content and strong hydrocarbon generation potential,whereas the tuff has a low TOC content and can scarcely generate hydrocarbons,indicating that the tuff deposited by volcanic activity cannot be considered as effective source *** terms of storage space,shale is mainly laminar and dispersed,and it includes organic and inorganic *** development of organic pores is affected by thermal maturity,whereas inorganic pores mainly occur between detrital particles and *** is mainly supported by heterogeneous matrix and associated with *** pores include inter-and intragranular mineral *** development of tight sandstone pores is affected by compaction,cementation,and dissolution,which mainly consist of intra-and intergranular *** Chang 7 lacustrine shale generally contains oil,but different lithologies have different oil drainage *** and

关键词： Lacustrine shale Organic-rich Volcanic activity Pore structure Oiliness

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Effects of Neo-Tethyan evolution on the petroleum system of Persian Gulf Superbasin

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petroleum Exploration and Development 2023年第1期50卷 1-13页

作者： zhu Rixiang ZHANG Shuichang WAN Bo ZHANG Wang LI Yong WANG Huajian LUO Beiwei LIU Yuke HE Zhiliang jin {2. state key {2. of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 10oo29China Research Institute of petroleum Exploration and Development PetroChinaBeijing 100083China china Petrochemical Corporation Ltd. Beijing 100728China Institute of Energy Peking UniversityBeijing 100871China

Considering the Neo-Tethyan tectonic process and the resulting environmental changes,a geodynamic model of“one-way train loading”is proposed to analyze the formation and evolution mechanism of the Persian Gulf Superbasin with the most abundant hydrocarbons in the *** Persian Gulf Superbasin has long been in a passive continental margin setting since the Late Paleozoic in the process of unidirectional subduction,forming a superior regional space of hydrocarbon *** the Jurassic-Cretaceous,the Persian Gulf Superbasin drifted slowly at low latitudes,and developed multiple superimposed source-reservoir-caprock assemblages as a combined result of several global geological events such as the Hadley Cell,the Equatorial Upwelling Current,and the Jurassic True Polar *** collision during the evolution of the foreland basin since the Cenozoic led to weak destruction,which was conducive to the preservation of oil and ***,it is be-lieved that the slow drifting and long retention in favorable climate zone of the continent are the critical factors for hydrocarbon ***,the prospects of hydrocarbon potential in other continents in the Neo-Tethyan were proposed.

关键词： Neo-Tethyan domain continental break-up and convergence one-way train loading model environment change Persian Gulf Superbasin

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Dispositional characteristics of Ordovician Wufeng Formation and Silurian Longmaxi Formation in Sichuan Basin and its adjacent areas

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petroleum Research 2017年第3期2卷 233-246页

作者： Haikuan Nie zhijun jin Xin Ma Zhongbao Liu Tuo Lin Zhenheng Yang state key {2. of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing 100083China Sinopec petroleum Exploration and Production Research Institute Beijing 100083China Sinopec key laboratory of Shale Oil/Gas Exploration&Production Beijing 100083China School of Energy resource China University of GeosciencesBeijing 100083China Oil&Gas Survey Center China Geological SurveyBeijing 100029China

According to data of gas wells and typical sections of Wufeng Formation and Longmaxi Formation in Sichuan Basin,shale of various graptolite zones were analyzed to determine depositional environment,lithology and thickness characteristics of the graptolite shale interval of WF2.WF3 in the lower part of Wufeng Formation,the graptolite shale interval of WF4 in Guanyinqiao Member of Wufeng Formation and the graptolite shale interval of LM1-LM4 in the bottom of Longmaxi Formation,and characteristics of shale horizontal distribution were also *** the depositional period of the graptolite shale interval of WF2.WF3,the study area was less affected by the Guangxi movement,the depositional environment was the deep water of open sea,where black shale was mainly deposited;the sedimentation center was developed in northeast Guizhou-northeast Sichuan and south Sichuan,the maximum thickness was from 4 to 6 m in the sedimentation *** the depositional period of the graptolite shale interval of WF4,the depositional environment in the study area changed greatly due to global sea level fall and enhanced Guangxi movement;the central Sichuan paleouplift,the central Guizhou paleouplift and the Jiangnan-Xuefeng palaeouplift were further expanded,and the area of the sedimentary basin decreased;the depositional environment was mainly carbonate bioclastic shoal of shallow sea,and partially deep sea which only was distributed in the Shizhu-Fuling-Wuxi area in east and northeast Sichuan and the Gongxian-Yongchuan area in south Sichuan;sediments of shallow water were dominated by limestone and argillaceous limestone with abundant Hirnantia,sediments of deep water were dominated by calcareous mudstone and shale with *** the depositional period of the graptolite shale interval of LM1-LM4,due to rise of global sea level and Guangxi movement,the sedimentary area was larger than that in the depositional period of Guanyinqiao Member,and the sedimentary environmen

关键词： Shale Graptolite zone Depositional environment Palaeouplift Wufeng Formation and Longmaxi Formation Sichuan Basin

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中国华南三水盆地发现氢气高异常渗出点

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Science Bulletin 2024年第9期69卷 1217-1220页

作者：金之钧张盼盼刘润超黄晓伟王晓梅孟庆强刘金侠苏宇通张浩哲 Institute of Energy Peking UniversityBeijing 100871China Peking University Ordos Research Institute of Energy Ordos 017010China state key {2. of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing 100083China School of Energy and resources China University of GeosciencesBeijing 100083China Research Institute of petroleum Exploration and Development China National Petroleum CorporationBeijing 100083China Sinopec Star Company Limited Beijing 100083China

Natural hydrogen(H_(2.)is also known as gold H_(2. and is a carbonfree energy resource with potential exploitation and utilization due to its renewable,environmentally friendly,and cost-effective characteristics[1].Natural H_(2. is distributed extensively worldwide,but varies in content in different regions and under varying geological *** present,only the H_(2. wells in Mali are used for economic production[2.3].

关键词： conditions friendly cost

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Structural Evolution of the Eastern Qiulitagh Fold and Thrust Belt,Northern Tarim Basin,china

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Acta Geologica Sinica(English Edition) 2009年第2期83卷 347-358页

作者： YANG Minghui jin zhijun LU Xiuxiang SUN Dongsheng TANG Xuan PENG Gengxin LEI Ganglin state key {2. of petroleum resource and prospecting China University of Petroleum Beijing 102249 Faculty of Natural resource and Information Technology China University of Petroleum Beijing 102249 Exploration and Production Research Institute SINOPEC Beijing 100083 China School of Energy China University of Geosciences Beijing 100083 China Tarim Oilfield Company CNPC Xinjiang 841000 China

The eastern Qiulitagh fold and thrust belt （EQFTB） is part of the active Kuqa fold and thrust belts of the northern Tarim Basin. Seismic reflection profiles have been integrated with surface geologic and drill data to examine the deformation and structure style of the EQFTB, particularly the deformational history of the Dina 2.gas field. Seismic interpretations suggest that Dongqiu 8 is overall a duplex structure developed beneath a passive roof thrust, which generated from a tipline in the Miocene Jidike Formation, and the sole thrust was initiated from the same Jidike Formation evaporite zone that extends westward beneath the Kuqatawu anticline. Dongqiu 5 is a pop-up structure at the western part of the EQFTB, also developed beneath the Jidike Formation evaporite. Very gentle basement dip and steep dipping topographic slope in the EQFTB suggest that the Jidike Formation salt provides effective decoupling. The strong deformation in the EQFTB appears to have developed further south, in an area where evaporite may be lacking. Since the Pliocene, the EQFTB has moved farther south over the evaporite and reached the Yaken area. Restoring a balanced cross-section suggests that the minimum shortening across the EQFTB is more than 7800 m. Assuming that this shortening occurred during the 5.3 Ma timespan, the shortening rate is approximately 1.47 mm/year.

关键词： Qiulitagh fold and thrust belt Tarim Basin northwestern china

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