检索结果-南通市图书馆

chemical, carbon and sulfur isotopic compositions constrain the origin of Upper carboniferous-lower Triassic gases in eastern sichuan Basin, sW china

引用

science china Earth sciences 2024年第10期67卷 3169-3185页

作者： chunfang cai Ilya kUTUZOV Wenhua MEI Daowei WANG Bing lUO shipeng huang Bing he Alon AMRANI china University of petroleum National Key Lab Petroleum Resource&EngineeringBeijing 102249China state key laboratory of lithospheric and Environmental coevolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China institute of Earth sciences The Hebrew UniversityJerusalem 91904Israel college of Earth and Planetary sciences University of Chinese Academy of SciencesBeijing 100049China Yulin University Yulin 719000China Research institute of Exploration and Development Southwest Oil&Gas Field CompanyPetroChinaChengdu 610051China Petrochina Research Institute of Petroleum Exploration and DevelopmentBeijing 100083China

Methane dominated gas is one of the cleanest energy resources;however, there is no direct method to determine its source rock. Natural gases produced from the eastern sichuan Basin together with seismic data were studied for their sources and secondary alteration by thermochemical sulfate reduction(TsR). Our results demonstrate that Upper Permian to lower Triassic(P_(3)ch-T_(1)f) gases in the surrounding of the kaijiang-liangping area show volatile organic sulfur compounds(VOscs) δ^(34)s values close to those of the associated h_(2)s, and may have been altered by methane-dominated TsR, resulting in positive shift in methane δ^(13)c_(1)values with increasing TsR extents. Other(or group 2) gases produced from the P_(3)ch-T_(1)f reservoirs from the southern area and the Upper carboniferous to Middle Permian(c_(2)h-P_(2)q) from the eastern sichuan Basin are not significantly changed by TsR, show similar δ^(34)s values between the kerogens and some VOscs, and may have been derived from the lower silurian and Middle Permian source rocks. This study demonstrates a case for the first time showing the δ^(34)s values of VOscs can be used as a tool for direct correlation between non-TsR altered gas and source rocks. Methane-dominated gas pools can be found using gas and source rock geochemistry combined with seismic data.

关键词： sulfur isotopes Volatile organic sulfur compounds Thermochemical sulfate reduction sichuan Basin Gas-source rock correlation

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Origin of palaeo-waters in the Ordovician carbonates in Tahe oilfield,Tarim Basin:constraints from fluid inclusions and sr c and O isotopes

Origin of palaeo-waters in the Ordovician carbonates in Tahe...

引用

中国科学院地质与地球物理研究所第11届（2011年度）学术年会

作者： k.li~(1,2),c.cai~1,h.he~3.l.jiang~(1,2),l.cai~(1,2),l.xiang~(1,2),s.huang~4 and c.zhang~5 ~1key lab of petroleum resources,institute of geology and geophysics,chinese academy of sciences,beijing,china ~2Graduate University of chinese academy of sciences,beijing,china ~3institute of petroleum Exploration and Development,cENOPEc, beijing,china ~4state key lab Oil Gas Reservoir geology and Exploitation,institute of sedimentary geology,chengdu University of Technology,chengdu,china Department of Geochemistry,Yangtze University,Jingzhou,hubei,china

Petrographic features,isotopes,and trace elements were determined,and fluid inclusions were analyzed on frac-ture -filling,karst-filling and interparticle calcite cement from the Ordovician carbonates in Tahe oilfield,Tarim basin,NW *** aim was to assess the origin and evolution of palaeo-waters in the *** initial water was seawater diluted by meteoric water,as indicated by bright cathodoluminescence(cl) in low-tempera-ture *** palaeoseawater was further buried to temperatures from 57 to 110℃,nonluminescent calcite precipitated during the silurian to middle *** of meteoric water of late Devonian age into the carbonate rocks was recorded in the first generation of fracture- and karst-filling dull red cl calcite with temperatures from3℃,low salinities(high Mn contents and high sr/sr ratios from 0.7090 to *** the early Permian,sr-rich hydrothermal water may have entered the carbonate rocks,from which precipitated a second generation of fracture-filling and interparticle calcite and barite cements with salinities greater than 22.4 wt%,and temperatures from 120°c to 180°*** hydrothermal water may have collected isotopically light cO(possibly of TsR-origin) during upward migration,resulting in hydrothermal calcite and the present-day oilfield water havingδc values from -4.3 to -13.8‰and showing negative relationships of sr/sr ratios toδc andδO ***,higher temperatures(up to 187℃) and much lower salinities (down to 0.5 wt%) measured from some karst-filling,giant,nonluminescent calcite crystals may suggest that hydrothermal water was deeply recycled,reduced(Fe-bearing) meteoric water heated in deeper strata,or water generated from TsR during hydrothermal water *** of hydrothermal and local basinal water(or diagenetically altered connate water) with meteoric waters of late Permian age and/or later may have resulted in large variations in salinity of the present oilfield waters with

关键词： carbon isotopes carbonates fluid inclusion fracture-filling hydrothermal water strontium isotopes Tarim basin

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Biogenic spherical magnetite and coffinite from a sandstone-type uranium deposit in the Dongsheng area

Biogenic spherical magnetite and coffinite from a sandstone-...

引用

中国科学院地质与地球物理研究所2007学术年会

作者： h.li,c.cai,k.li & X.luo key lab of Mineral resources,institute of geology and geophysics,chinese academy of sciences,beijing,PR china

spherical magnetite and rod-shaped coffinite have been intergrown with pyrite and calcite cement in the Dongsheng sandstone-type uranium *** order to assess the origin of magnetite and coffinite,the host sandstone has been analyzed for fluid inclusion oil biomarkers,pyriteδs,calciteδc and observed under *** results show that fluid inclusion oils are characterized by"UcM"and significant amounts of 25-norhopanes,suggesting biodegradation of the *** in pyrite originated from bacterial sulfate reduction as indicated by lowδs values,and calcite cement has petroleum-derived *** of biogenic pyrite with calcite cement that has petroleum-derived carbon,suggests that petroleum was likely oxidized by sulfate-reducing bacteria(sRB).sRB could have depleted petroleum and reduced Fe(Ⅲ) and U(Ⅵ) to Fe(Ⅱ) and U(Ⅳ),respectively,by anaerobic respiration,resulting in magnetite and coffinite formation.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Fluid inclusion and isotopic constraints for fluid evolution in the Ordovician veins in central Tarim,NW china

Fluid inclusion and isotopic constraints for fluid evolution...

引用

中国科学院地质与地球物理研究所2007学术年会

作者： c.cai,k.li & h.li key lab of Mineral resources,institute of geology and geophysics,chinese academy of sciences, beijing,P.R.china G.Wu Tarim Oilfield company,Petrochina,kuerle,Xinjiang,P.R.china

Barite,anhydrite,fluorite,calcitc and quartz arc found filling factures in central *** brines haveδO values from -1.5 to +1.4‰,and sr/sr from 0.71026 to *** barite veins show an averageδO value of 12.0‰and precipitated at～142℃from a solution with aδO of～1.80‰and a sr/sr of～***,the solution was cooled by mixing with meteoric water,resulting in aδO of -1.60‰.Anhydrite and fluorite veins have lower homogenization temperatures and show much higher sr/sr ratios(0.70912 to 0.71036) than barite and bulk.limestone,but are closer in composition to modern brines,suggesting more radiogenic sr contribution from clastic rocks in the west to the central Tarim during *** veins were precipitated under a wide temperature range and show variable sr/sr ratios. Quartz veins were likely not in oxygen isotopic equilibrium with the mineralizing fluid.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Geochemistry and origins of hydrogen-containing natural gases in deep songliao Basin,china:Insights from continental scientific drilling

引用

petroleum science 2024年第2期21卷 741-751页

作者： shuang-Biao han chao-han xiang Xin Du lin-Feng Xie Jie huang cheng-shan Wang college of Geoscience and surveying Engineering China University of Mining and TechnologyBeijing100083China state key laboratory of Biogeology and Environmental geology China University of GeosciencesBeijing100083China

The different reservoirs in deep songliao Basin have non-homogeneous lithologies and include multiple layers with a high content of hydrogen *** gas composition and stable isotope characteristics vary significantly,but the origin analysis of different gas types has previously been *** on the geochemical parameters of gas samples from different depths and the analysis of geological settings,this research covers the diverse origins of natural gas in different *** gas components are mainly methane with a small amount of c_(2+),and non-hydrocarbon gases,including nitrogen(N_(2)),hydrogen(h_(2)),carbon dioxide(cO_(2)),and helium(he).At greater depth,the carbon isotope of methane becomes heavier,and the hydrogen isotope points to a lacustrine sedimentary *** increasing depth,the origins of N_(2)and cO_(2)change gradually from a mixture of organic and inorganic to *** origins of hydrogen gas are complex and include organic sources,water radiolysis,water-rock(Fe^(2+)-containing minerals)reactions,and *** shales of Denglouku and sh.hezi Formations,as source rocks,provide the premise for generation and occurrence of organic ***,the deep faults and fluid activities in Basement Formation control the generation and migration of mantle-derived *** discovery of a high content of h_(2)in study area not only reveals the organic and inorganic association of natural-gas generation,but also provides a scientific basis for the exploration of deep hydrogen-rich gas.

关键词： Gas compositions stable isotopes Gas origins hydrogen gas songliao Basin

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Application of c5-c13 light hydrocarbons in depositional environment diagnosis

引用

Progress in Natural science:Materials International 2008年第9期18卷 1129-1137页

作者： Peirong Wanga,b,, Guanjun Xu a,c, Tingrong Xiaoc, Dajiang zhanga,c, Bin zhanga,c a key laboratory of petroleum Geochemistry, china National petroleum corporation, beijing 100083, china b Department of Organic Geochemistry, Yangtze University, Jingzhou 434023, china c central laboratory of petroleum geology, Research institute of petroleum Exploration and Development, Petrochina, beijing 100083, china key laboratory of petroleum Geochemistry China National Petroleum Corporation Beijing 100083 China Department of Organic Geochemistry Yangtze University Jingzhou 434023 China central laboratory of petroleum geology Research Institute of Petroleum Exploration and Development PetroChina Beijing 100083 China

Based on the geological background and Gammacerane/c31h(s + R) ratios, source rock depositional environments of the studied oil samples (194) from 13 oilfields were classified into three groups according to salinity:saline-lacustrine facies, fresh to brackish lacustrine facies (including limnetic facies), and semi-saline to saline facies (including marine facies of the Tarim Basin).c5-c13 compound groups in the crude oils were separated by Gc, and about 286 compounds were qualitatively *** geochemical application of the c6-c13 compound groups and their ratios between each group with individual carbon number was *** studies show that (1) c6-c13 compound groups and their ratios in the crude oils could serve as new reliable parameters for oil-oil correlation because the c6-c13 light fractions are the major oil component, especially in light oil or condensate, in which they account for almost 90% of the whole oil;(2) the compound groups of c7 light hydrocarbons in oils derived from difierent depositional environments with difierent salinity have difierent characteristics;(3) c6-c13 compound groups and ratios may be afiected by other factors such as maturity, but they are mainly controlled by salinity of depositional waters.

关键词： light hydrocarbons crude oil Depositional environment salinity

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

TsR origin of sulfur in Permian and Triassic reservoir bitumen,East sichuan Basin,china

TSR origin of sulfur in Permian and Triassic reservoir bitum...

引用

中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： chunfang cai~(a,b,*),kaikai li~b,Yangming Zhu~c,lei xiang~b,lei jiang~b,Tenger~d,Xunyu cai~e,liulu cai~b a state key lab of lithospheric Evolution,institute of geology and geophysics,chinese academy of sciences,beijing 100029,china b key lab of petroleum resources Research,institute of geology and geophysics,chinese academy of sciences,beijing 100029,china cDepartment of Earth sciences,Zhejiang University,houzhou 310027,china d institute of petroleum Exploration and Development,cENOPEc,Wuxi,Jiansu Province,china e Oilfield Department,cENOPEc,beijing 100029,china

solid bitumen,hs,pyrite and anhydrite samples from the lower Triassic Feixianguan Formation and Upper Permian changxing Formation,and source rock kerogen samples from the cambrian,Ordovician, silurian and Permian in the East sichuan Basin were analyzed for their sulfur content andδs values,to determine if the measurements were consistent with a thermochemical sulfate reduction(TsR) origin of the produced hs and solid *** results show that the solid bitumen samples have sulfur contents from 2.6 to 12.5 wt.%andδs values from +13.4‰to +22.1‰.Theδs values are significantly heavier than those of potential Upper Permian source rock kerogens that average +1.3‰(n = 3),suggesting that most of the sulfur in the solid bitumen is derived from isotopically heavy hs of TsR origin (from+12.0‰to+13.7‰).Interestingly,two gases produced from gas to water transition zones during drill stem testing(DsT) show significantly lighterδs values(+3.3‰and +4.1‰) than the hs from gas-producing *** isotopically light hs may be genetically linked to fracture-filling isotopically heavy anhydrite withδs values from +38.5‰to +39.6‰,which are significantly heavier than those of coeval seawater sulfate(+11.8‰to+21.7‰) as measured for bedded *** link may have resulted from reduction of part of the dissolved sulfate by hydrocarbons under sulfate-limited conditions. source rock kerogens show a secular change inδs values relative to source rock age.A dramatic decrease and then increase inδs was found toward the Permian/Triassic boundary for the first time in the East sichuan Basin.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Phase Behaviour and Physical Properties of Alkane solvent（s）/cO2/N2/DME/Water/heavy Oil systems under Reservoir conditions

引用

油气地质与采收率 2024年第2期 175-208页

作者： YANG Daoyong li Yunlong huang Desheng Energy systems Engineering Faculty of Engineering and Applied Science University of Regina

The hybrid steam-solvent injection has been considered as a promising technique for enhancing heavy oil/bitumen recov‐ery,while its main mechanisms including the heat transferred and dissolution of solvents (e.g.,ch4,c2h6,c3h8,c4h10,cO2,N2,and DME) into heavy oil/bitumen to reduce its viscosity and swell it are closely related to the phase behaviour of the solvents/water/heavy oil *** allow the seamless integration with the existing reservoir simulators,the traditional cubic equations of state （i.e.,sRk EOs and PR EOs） have been modified and improved to accurately quantify the phase behaviour and physical prop‐erties of the aforementioned systems under equilibrium and nonequilibrium ***,a huge database has been built to de‐velop the corresponding alpha functions by minimizing the deviation between the measured and calculated vapour pressures for wa‐ter as well as non-hydrocarbon and hydrocarbon compounds available from the public *** obtained alpha functions are fur‐ther validated with enthalpy of vaporization for pure substances,and then the reduced temperature has been optimized and the ec‐centric factor has been ***,a pressure-implicit strategy has been developed to optimize the binary interaction param‐eters （BIPs） by treating heavy oil as one pseudocomponent （Pc） or multiple ***,the contributions of each solvent to the aforementioned systems have been compared and analyzed within a consistent and unified *** addition to new alpha func‐tions for hydrocarbons and water,respectively,the reduced temperature is found to have its optimum value of 0.59 for the two equa‐tions of state （EOss）,while 0.60 is recommended for practical *** improved EOss have been further employed to reproduce the experimentally measured multiphase boundaries （or pseudo-bubble-point pressures）,density,viscosity,（mutual） solubility,and preferential mass transfer for the aforementioned mixtures under equilibrium and nonequilibrium

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

A study of sr, Nd and O Isotopes of the k-rich Melanocratic Dykes in the late Mesozoic Gold Field in the Jiaodong Peninsula

引用

Acta Geologica sinica(English Edition) 2001年第4期75卷 432-444页

作者： sUN Jinggui, hU shouxi, liU Jianmin, sheN kun and liNG hongfei Earth science institute, Jilin University, changchun 130062 state key laboratory of Research on Metallogenesis of Endogenic Ore Deposits,Nanjing University, Nanjing 210093 institute of geology and geophysics, chinese academy of sciences, beijing 100101 shandong institute and laboratory of Geological sciences, Jinan 250013 Jilin Univ Inst Earth Sci Changchun 130062 Peoples R China Nanjing Univ State Key Lab Res Metallogenesis Endogen Ore Depo Nanjing 210093 Peoples R China chinese Acad sci Inst Geol & Geophys Beijing 100101 Peoples R China shandong Inst Jinan 250013 Peoples R China lab Geol sci Jinan 250013 Peoples R China

Geologic, petrographic and petrochemical studies of the late Mesozoic k-rich melanocratic dykes, including lamprophyres, andesite porphyrites and dacite-porphyry in the gold field system in the Jiaodong Peninsula, china, have shown that these dykes are characterized by rich potassium and alk.li but poor titanium. They belong to an ultra-high potassic, shoshonitic and high potassic calc-alk.line rock series. The parental magma has relatively high initial strontium ratios ((87sr/86sr),=0.70895-0.71140) and low (143Nd/144Nd)1 ratios (varying from 0.51135 to 0.51231); and its δ18Osmow, whole rock values vary from +5.8%c to +10.6%c with a mean of +7.1%c. These features suggest that the source region of the magma is an enriched mantle wedge transformed from a continental lithosphere mantle which has experienced metasomatism by mantle-derived fluids with h2O-dominated fluids that were provided during the underthrusting of an ocean crust. The initial magma was generated by low-degree partial melting of the enriched mantle in its mature stage in the back-arc spreading environment. The evolution of magmas is associated with two trends, i.e., fractional crystallization and mixing with or intensive contamination by palaeo-crust materials or metamorphic rocks. The former process is evident in the gold field system of quartz-vein type, whereas the latter is dominated in the gold field system of the altered-rock type. This conclusion is very important for more detailed study of petrogenesis and mineralization through the crust-mantle interaction (exchange) in the Mesozoic in this region.

关键词： late Mesozoic k-rich melanocratic dykes sr Nd and O isotope geochemistry gold field system in the Jiaodong Peninsula

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Mechanism of catalytic hydropyrolysis of sedimentary organic matter with Mos_2

引用

petroleum science 2011年第2期8卷 134-142页

作者： he kun zhang shuichang Mi Jingkui chen Jianping cheng lei petroleum geology Research and central laboratory Research Institute of Petroleum Exploration and Development （RIPED） PetroChina Beijing 100083 China cNPc key laboratories for petroleum Geochemistry Beijing 100083 China

Mos2 was used as an efficient catalyst for hydropyrolysis （hypy） of three samples of sedimentary organic matter with different maturities. Through comparison with soxhlet extraction （sE）, it was found that Mos2 catalytic hypy can remarkably promote the yields of total chloroform extracts, saturates, aromatics, hopanes and steranes. In addition, the difference of biomarker parameters indicated that isomerization of covalently-bound biomarkers is much more difficult than their free counterparts. Meanwhile, the high conversion of total organic carbon （TOc） in Mos2 catalytic hypy of organic matter proved that the presence of dispersed molybdenum sulfide accelerated the breaking of c-c bonds and the release of hydrocarbons. To address the catalytic mechanism, a series of control experiments based on free hypy and catalytic hypy were conducted. The results showed that the calculated atomic ratio of carbon conversion/hydrogen conversion for catalytic hypy was much larger than the presumed value of 1/2, indicating that intensive hydrogenation took place and significantly influenced the distribution of liquid products. Analysis of stable hydrogen isotope data, infrared spectra and m/z 83 ion chromatograph of the saturate fraction further confirmed this hypothesis. The difference of s content changing （As） between catalyst-free hypy and catalytic hypy, and the thermal characteristics of the catalyst, indicated that active h2s was definitely generated and it probably initiated free radical reactions in the early stage of hydropyrolysis of organic matter.

关键词： catalytic hydropyrolysis molybdenum disulfide kerogen coal soxhlet extraction,biomarkers

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：