检索结果-南通市图书馆

genetic types and distribution of shallow-buried natural gases

Petroleum Science 2010年第3期7卷 347-354页

作者： Gao Yang Jin Qiang Zhu Guangyou College of Geo-resources and Information China University of Petroleum Dongying Shandong 257061 China Petroleum Exploration and Development Institute PetroChina Beijing 100083 China

Great volumes of shallow-buried （〈2,000 m） natural gases which are mainly composed of biogases and low-mature gases have been found in the Mesozoic-Cenozoic sedimentary basins in China. Many shallow gas reservoirs in China are characterized by coexistence of biogas and low-mature gas, so identifying the genetic types of shallow gases is important for exploration and development in sedimentary basins. In this paper, we study the gas geochemistry characteristics and distribution in different basins, and classify the shallow gas into two genetic types, biogas and low-mature gas. The biogases are subdivided further into two subtypes by their sources, the source rock-derived biogas and hydrocarbon-derived biogas. Based on the burial history of the source rocks, the source rock-derived biogases are divided into primary and secondary biogas. The former is generated from the source rocks in the primary burial stage, and the latter is from uplifted source rocks or those in a secondary burial stage. In addition, the identifying parameters of each type of shallow gas are given. Based on the analysis above, the distributions of each type of shallow gas are studied. The primary biogases generated from source rocks are mostly distributed in Quaternary basins or modem deltas. Most of them migrate in watersoluble or diffused mode, and their migration distance is short. Reservoir and caprock assemblages play an important role in primary biogas accumulation. The secondary biogases are distributed in a basin with secondary burial history. The oil-degraded biogases are distributed near heavy oil pools. The low-mature gases are widely distributed in shallow-buried reservoirs in the Meso-Cenozoic basins.

关键词： Primary biogas secondary biogas oil-degraded biogas low-mature gas genetic type gas identification gas accumulation distribution

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

Carbon isotopic composition and genetic types of natural gas in the Sichuan Basin, China

引用

Acta Geochimica 2017年第1期36卷 102-111页

作者： Jin-ning peng Dong-yan Wang Guang-xiang Liu Min Zhang Feng-li Li School of Earth Environment and Water Resources YangtzeUniversity Wuhan 430100 China Wuxi Research Institute of Petroleum Geology SINOPECWuxi 214126 Jiangsu China

The origin and genetic types of natural gas in the Sichuan Basin are still *** classify the origin and genetic types in different areas,the paper analyzes the carbon isotopic composition of gases and geologic features in the Sichuan *** results showed that the gas sourced from terrestrial layers is typically characterized by terrestrial origin and was mainly accumulated nearby to form *** carbon isotopic composition of gas showed a normal combination sequence distribution,suggesting that natural gas in continental strata is not affected by secondary alteration or that this deformation is very *** gas source is singular,and only gas from the southern and northern Sichuan Basin shows the characteristic of mixed ***,marine gas presents the characteristics of an oil-formed *** carbon isotopic composition of natural gas in the western and central part of the basin mostly distributes in a normal combination sequence,and few of them showed an inversion,indicating that the gas perhaps had not experienced secondary *** carbon isotopic composition of marine-origin gas in the southern,northern and eastern Sichuan Basin displays a completely different distribution pattern,which is probably caused by different mixing ratio of gas with multi-source and multi-period.

关键词： The Sichuan Basin Alkane Carbon isotope genetic type

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

Rock Series and genetic types of Granitoids in the Western Kunlun Orogenic Belt,China

引用

Acta Geologica Sinica(English Edition) 2001年第1期75卷 19-26页

作者： JIANG Yaohui ZHOU Xunruo RUI Xingjian GUO Kunyi HE Jurui YANG Wanzhi State Key Laboratory of Mineral Deposit Research Nanjing UniversityNanjingJiangsu 210093 Nanjing Institute of Geology and Mineral Resources Ministry of Land and ResourcesNanjingJiangsu 210016 China University of Geosciences Beijing 100083 Xinjiang Geophysical and Geochemical Exploration Team ChangjiXinjiang 831100

A systematic geological and geochemical study was conducted for the granitoids of different periods in the western Kunlun orogenic belt. The study indicates that the granitoids belong to tholeiitic, calc-alkaline, high-K calc-alkaline, alkaline and shoshonitic series, and that there are 5 genetic types, i.e., I-, S-, M-, A- and SH-type, of which SH-type is first put forward in this paper, which corresponds to shoshonitic granitoids.

关键词： granitoid rock series genetic type western Kunlun orogenic belt

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

Geology,genetic types and Metallogeny of Gold Deposits in the Eastern Tianshan,Xinjiang

引用

Acta Geologica Sinica(English Edition) 2000年第3期74卷 559-564页

作者： FENG Jianzhong ZENG Yishan FU Shuixing Peking University Beijing 100871 Beijing Institute of Geology for Mineral Resources AndingmenwaiBeijing 100012

As a typical Palaeozoic island arc system, the eastern Tianshan area, Xinjiang, is different from eastern China but similar to the Meso-Cenozoic island arc metallogenic provinces along the coast of the Pacific Ocean in metallogenic environment, geology and geochemistry. Three types of gold deposits, ductile shear zone-hosted gold deposits (Kanggur'), magmatic hydrothermal gold deposits (Jinwozi) and volcanic- or subvolcanic-hosted gold deposits (Xitan and Mazhuangshan), have been identified in this area. Regionally, gold deposits are structurally controlled by the Kanggur Tag ductile shear zone, Shaquanzi fault, Hongliuhe fault and Yamansu fault. Generally, gold mineralization occurs in the transition zones from volcanic rocks to sedimentary rocks. The horizon bearing well-developed jasper is an important indicator for gold mineralization. Each of the three types of gold deposits has its distinctive metallogenic background and geological-geochemical characteristics.

关键词： eastern Tianshan gold metallogeny genetic type geology geochemistry

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

THE genetic typeS OF BAUXITE DEPOSITS IN CHINA

引用

Science in China,Ser.B 1988年第8期31卷 1010-1024页

作者：刘长龄 Tianjin Geological Academy Ministry of Metallurgical Industry PRC

The genetic type classification of the bauxite deposits in China was oversimplified in the past and the author tries to make a relatively detailed division based on their practical conditions. First, the occurrences of bauxite deposits are divided into platform and geosyncline terrains according to their geotectonic setting. Then, the lateritic, accumulated, sedimentary, solution precipitated diagenetitc-epigenetic, regional metamorphic categories and two metacategories are established based on their main metallogenetic processes. Finally 21 types and 9 metatypes are set up according to their formation features (including genesis, sedimentary environment or major mineral features), of which several types are newly established. The classification is quite different from that of the world’s bauxite deposits, the metacategories and metarypes refer to the deposits o only scientific significance at present.

关键词： bauxite deposit genetic type classification.

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

Research progress in studies on the coalbed gas geochemistry

引用

Progress in Natural Science:Materials International 2006年第3期16卷 215-220页

作者： TAO Mingxin (College of Resources Sciences & Technology, Beijing Normal University, Beijing 100875, China Key Laboratory of Gas Geochemistry, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000, China) College of Resources Sciences and Technology Beijing Normal University Beijing 100875 China Key Laboratory of Gas Geochemistry Institute of Geology and Geophysics Chinese Academy of Sciences Lanzhou 730000 China

The current situation of geochemical studies on coalbed gas is reviewed in this paper. Generally, coalbed gas is composi-tionally dominated by methane with δ13C1 values ranging approximately from - 80‰ to - 10‰. However, few isotopic studies have been carried out on other components of coalbed gas except for hydrogen and carbon dioxide, whose δDCH4 values available for utilization vary from - 333‰ to - 117‰, and δ13CCO2 values from - 29. 4‰ to + 18. 6‰. Two major types of coalbed gas, thermogenic gas and secondary biogenic gas, have been identified, and there are also some other classification criteria. Compared with conventional natural gases, coalbed gas has a wide distribution range of δ13C1 and δ13CCO2 values, especially possessing some extremely heavy values. Current problems that remain unsolved in the coalbed gas geochemistry include the variation mechanism, controlling factors and application of carbon and hydrogen isotopes of methane, the relation between the values of δ13C1 and Ro, the systematic classification scheme and criterion of genetic types, and the application of the coalbed gas geochemistry in evaluating target districts of the coalbed gas exploration.

关键词： coalbed gas geochemistry isotopic composition genetic type novel resource.

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

Coalbed methane genesis, occurrence and accumulation in China

引用

Petroleum Science 2012年第3期9卷 269-280页

作者： Song Yan Liu Shaobo Zhang Qun Tao Mingxin Zhao Mengjun Hong Feng Research Institute of Petroleum Exploration&Development Beijing 100083China China University of Petroleum Beijing 102249China Xi'an Research Institute of China Coal Technology&Engineering Group Corp. Shaanxi 710077China Beijing Normal University Beijing 100875China

Coalbed methane （CBM） is an important type of unconventional gas. Commercial development of CBM in America has been very successful since the 1980s. The CBM industry in Australia and Canada has developed rapidly during the last decade. Commercial development of CBM in China started in the 1990s, and has made great progress. The geological theory of CBM in China has achieved great advancement in genesis, occurrence and accumulation. On the aspect of CBM genesis, five CBM genetic types （primary biogenic gas, secondary biogenic gas, thermal degradation gas, pyrolysis gas and mixed gas） are identified by studying the geochemical characteristics of CBM, and a tracing indicator system is established. The discovery of secondary biogenic gas in medium-high rank coal reservoirs has widened the potential of CBM resources. On the aspect of CBM occurrence, the gas adsorption regulation under combined action of temperature and pressure is revealed by conducting adsorption experiments of different coal ranks under varying temperature and pressure conditions. Besides, by applying the adsorption potential theory in CBM research, the adsorption model under combined action of temperature and pressure is established. The new model can predict CBM resources accurately, and overcome the limitation of the traditional Langmuir model which uses just a single factor to describe the adsorption characteristics of deep buried coal. On the aspect of CBM accumulation, it is proposed that there are three evolutionary stages during CBM accumulation, including gas generation and adsorption, unsaturated gas adsorption, gas desorption-diffusion and preservation. Controlled by tectonic evolution, hydrodynamics and sealing conditions, CBM tends to be regionally enriched in synclines. Advances in geological theory of CBM in China can not only improve understanding of natural gas, but also provide new ideas for further exploration of CBM.

关键词： China coalbed methane genetic type secondary biogenic gas adsorption model syncline enrichment

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

Research on Formation Mechanisms of Hot Dry Rock Resources in China

引用

Acta Geologica Sinica(English Edition) 2016年第4期90卷 1418-1433页

作者： WANG Guiling LIN Wenjing ZHANG Wei LU Chuan MA Feng GAN Haonan Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological Sciences

As an important geothermal resource, hot dry rock （HDR） reserves have been studied in many countries. HDR resources in China have huge capacity and have become one of the most important resources for the potential replacement of fossil fuels. However, HDR resources are difficult to develop and utilise. Technologies for use with HDR, such as high-temperature drilling, reservoir characterisation, reservoir fracturing, microseismic monitoring and high-temperature power stations, originate from the field of oil and drilling. Addressing how to take advantage of these developed technologies is a key factor in the development of HDR reserves. Based on the thermal crustal structure in China, HDR resources can be divided into four types： high radioactive heat production, sedimentary basin, modern volcano and the inner-plate active tectonic belt. The prospective regions of HDR resources are located in South Tibet, West Yunnan, the southeast coast of China, Bohai Rim, Songliao Basin and Guanzhong Basin. The related essential technologies are relatively mature, and the prospect of HDR power generation is promising. Therefore, analysing the formation mechanisms of HDR resources and promoting the transformation of technological achievements, large-scale development and the utilisation of HDR resources can be achieved in China.

关键词： HDR resources drilling technique genetic type resources distribution develop prospect

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

GEOCHEMICAL CHARACTERISTICS OF STABLE ISOTOPES FROM HYDROTHERMAL CHIMNEYS IN THE MARIANA TROUGH, WEST PACIFIC OCEAN

引用

Chinese Journal of Oceanology and Limnology 2000年第4期18卷 378-384页

作者：吴世迎张道建王揆洋陈成业白黎明 SOA First Institute of Oceanography Qingdao China Department of Geology Beijing University Beijing China

The determination of the stable isotopes, δD, δ18 and δ30, values from hydrothermal chimneys in the Mariana Trough, the West Pacific, indicated that the pure siliceous chimneys with gentle data variation were formed in low temperature environment. It reflects that the sea-floor hydrothermal activity of the Mariana Trough is primarily low-to-medium temperature hydrothermal eruption, and those chimneys with strong data variation and containing pyrite were formed in higher temperature environment. Key words Mariana Trough - stable isotope - geochemistry - hydrothermal chimney - genetic type Project 49876016 supported by NSFC.

关键词： Mariana Trough stable isotope geochemistry hydrothermal chimney genetic type

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

Discussion of gas enrichment mechanism and natural gas origin in marine sedimentary basin,China

引用

Science Bulletin 2007年第S1期 62-76页

作者： ZHU GuangYou, ZHAO WenZhi, ZHANG ShuiChang, LIANG YingBo & WANG ZhengJun Research Center of Petroleum Geology, Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China

There are abundant natural gas resources in Chinese marine sedimentary basin. The exploration hot shots of natural gas are the Palaeozoic marine strata here in recent years, and several large scale gas fields have been discovered. Chinese Palaeozoic high-post matured and coal measure hydrocarbon source rocks are mainly prone to gas generation in the present. This research considered that gas source rocks and TSR are the key cause of gas enrichment of marine strata. High-quality argillaceous and coal measure hydrocarbon rocks are distributed widely in the Palaeozoic marine strata, which have been in highly matured phase in the present. The argillaceous source rock generally contains various sulfates that could accelerate crude oil cracking to gas for TSR occurrence, and coal measure source rock mainly generates gas, so Chinese marine basin gives priority to accumulating gas. Marine strata have not founded oil reservoirs in the Sichuan Basin and Ordos Basin, and they consist mainly of dry gas. Marine natural gases are the mixed gases of oil cracking gas and coal-formed gas in a general way, oil cracking gases contain usually some H2S and CO2. Hydrocarbon carbon isotopes are very complicated, and methane and ethane isotopic values bear apparent reversal caused by thermal evolution and mixing among different genetic types of natural gas. Coal-formed gases are the main component of Chinese marine natural gas. The Upper Permian of the Sichuan Basin and the Carboniferous-Permian of the Ordos Basin coal measure hydrocarbon source rock present large hydrocarbon generation potential, which are the prospecting highlight of marine natural gas hereafter. Oil cracking gas exploration will be paid much attention to in the Tarim Basin because of the lack of coal measure hydrocarbon source rock.

关键词： marine facies Palaeozoic carbonate rock genetic type gas source carbon isotope hydrogen sulfide (H2S)

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

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：