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The surface geochemical exploration of oil and gas in the Gangbatong-Ya'anxiang and the Dongqiao-Nam Co of the Qinghai-Tibet region

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Science china earth sciences 2009年第S1期52卷 69-76页

作者： XIONG Bo1,2,LI XianQing3,4,LI YiBin5 & TAN Qing6 1 department of Geochemistry,Yangtze university,Jingzhou 434023,china 2 Key Laboratory of Exploration Technologies for Oil and Gas resources(Yangtze university) ,Ministry of Education,Jingzhou 434023,china 3 State Key Laboratory of Coal resources and Safe mining,china university of mining and technology,beijing 100083,china 4 department of resources and earth sciences,school of resources and safety engineering,china university of mining and technology,beijing 100083,china 5 Institute of Geosciences,Yangtze university,Jingzhou 434023,china 6 Jinzhou Research Branch of New Region Exploration,Research Institute of Petroleum Exploration and Development,SINOPEC,Jingzhou 434100,china 1. department of Geochemistry Yangtze University Jingzhou 434023 China 2. Key Laboratory of Exploration Technologies for Oil and Gas resources (Yangtze university) Ministry of Education Jingzhou 434023 China 3. State Key Laboratory of Coal resources and Safe mining China University of Mining and Technology Beijing 100083 China 4. department of resources and earth sciences School of Resources and Safety Engineering China University of Mining and Technology Beijing 100083 China 5. Institute of Geosciences Yangtze University Jingzhou 434023 China 6. Jinzhou Research Branch of New Region Exploration Research Institute of Petroleum Exploration and Development SINOPEC Jingzhou 434100 China

Due to the complexity of geological background and the adverseness of natural geographical environment in the Qinghai-Tibet Plateau,it is very difficult to carry out petroleum geological study in this region. The Qinghai-Tibet Plateau is the only blank space of petroleum exploration on a large scale. The authors carried out the surface geochemical exploration of oil and gas in the Gangbatong-Ya'anxiang and Dongqiao-Nam Co of the Qinghai-Tibet region. Based on the data of actual detection and experiments in the studied area,the characteristics of concentration and profile distribution of the main geochemical exploration indicators(total adsorbed hydrocarbon,altered carbonate,thermal released mercury,etc.) were discussed. The origin of hydrocarbon was also discussed. Moreover,the oil and gas potential of different sections in the Qiangtang Basin and the Biru Basin were evaluated,which could provide references for the exploration and prediction of oil and gas in this region. The concentrations of total adsorbed hydrocarbons in the Ya'anxiang of Suoxian County-Zadong of Baqing County and the Jiecha-Dangxiong of Anduo County in the Qinghai-Tibet region are high,averaging 312.64 μL·kg-1 and 164.36 μL·kg-1. Their altered carbonate concentrations are relatively low,averaging 0.11% and 0.56%. Their concentrations of thermal released mercury are relatively high,averaging 13.09×10-9 and 1.94×10-9. Geochemical exploration results in fact reflect hydrocarbon information in the underground,which are mainly petroleum associated gas and over-matured cracking gas. The Jiecha-Charenluma and the Xiamaya'ertong-Suoba sections in the Qiangtang Basin are the most favorable ones for oil and gas and the Ekou-Zadong section is relatively favorable one,while the Nam Co and the Zigetangcuo-Dongqiao sections in the Biru Basin are the favorable ones for oil and gas,and the Jiang Co-Nading Co and the Ya'anxiang-Ya'ertong sections are relatively favorable ones.

关键词： geochemical exploration adsorbed hydrocarbon indicator hydrocarbon anomaly evaluation of oil and gas Qinghai-Tibet region

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Contrasting on Hydrocarbon Generation Modeland Characteristics of Pyrolysis of Modern Aquatic Plant(Gloeocapsa) vs MarineAnimal(Mantis Shrimp)

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Journal of earth Science 2000年第1期19卷 30-38页

作者： Liu Dameng department of Geology and Energy resources, china university of Geosciences, beijing 100083 Jin Kuili china university of mining and technology, beijing 100083

A hydrocarbon model of the modern aquatic plant Gloeocapsa and the aquatic animal mantis shrimp was found in thermal simulating experiment. The results show that the modern aquatic plant Gloeocapsa is characterized by late generation, late termination and a long duration of oil generation, while the aquatic animal mantis shrimp is characterized by early generation, early termination and a short duration of oil generation. The nalkanes from Gloeocapsa and mantis shrimp are characterized by peak carbon C 15 -C 17 . With increasing thermal simulating temperature, the peak carbon changes from C 17 to C 15 , and the odd-even predominance of nalkanes becomes less clear. The products from Gloeocapsa contain abundant phenanthrene and naphthalene compounds, and even a little retene, while those from mantis shrimp are dominated by naphthalene compounds, and are poor in phenanthrene compounds. Gloeocapsa and mantis shrimp are rich in C 27 sterane, relatively rich in tricyclic terpanes (C 19 -C 29 ) and hopanes (C 27 -C 35 ), poor in 5α,14β,17β sterane, and coprostane does not disappear until 450 ℃. The tricyclic terpanes in Gloeocapsa are characterized by peak carbon C 23 and C 23 >C 21 , and in mantis shrimp by C 21 and C 21 >C 23 . The content of pregnanes is very low at low temperature of thermal simulation, while above 360 ℃, high levels of pregnane series compounds and even degraded C 25 and C 26 steranes occur in thermal simulation products.

关键词： Gloeocapsa mantis shrimp hydrocarbon generation thermal simulation molecular geochemistry.

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resources of Kaolinite Rocks in china Coal Measures

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Journal of earth Science 2000年第2期19卷 62-65页

作者： Liu Qinfu department of resources engineering, china university of mining and technology, beijing 100083 Xu Hongliang Material department, Zhengzhou university of technology, Henan 450002

The proved reserve of kaolinite rocks in china coal measures is about 1.673 billion tons. The types of kaolinite rocks contain tonstein, flintclay and soft kaolin. Their origin modes include alteration of volcanic ash, terrigenous clay deposit and weathering of coal and adjacent rocks. The organic matter and organic acid play an important role in the formation of kaolinite rocks of coal measures. The difference in properties between kaolinite rock and traditional kaolin requires different processing technologies.

关键词： coal measures kaolinite rocks reserve origin.

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High-Resolution Sequence Stratigraphy and Coal Accumulating Models of the Permo-Carboniferous Coal Measures in Southwestern Shanxi

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地学前缘 2009年第S1期16卷 143-144页

作者： Zhenghui Xiao~(1,2),Longyi Shao~2,Hao Wang~2,Jing Lu~2 1.Hunan university of Science and technology,Xiangtan 411201,china. 2.department of resources and earth sciences,china university of mining and technology(beijing),beijing 100083,china

The Qinshui Basin in southeastern Shanxi Province is an important base for coalbed methane exploration and production in *** methane reservoirs in this area are the Carboniferous and Permian coals and their thickness are strongly controlled by the depositional environments and the sequence stratigraphic *** paper analyzes the high-resolution sequence stratigraphy of the Permo-Carbo-

关键词： sequence stratigraphic framework coal-accumulating model Permo-Carboniferous Qinshui Basin

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Sedimentary Facies and Coal Accumulation of the Northern Type Longtan Formation in Central Hunan,Southern china

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地学前缘 2009年第S1期16卷 155-156页

作者： Congwei Ji~1,Zhineng Li~2,Zhengqi Peng~2,Chao Zhang~1,Longyi Shao~1 1.department of resources and earth sciences,china university of mining and technology(beijing),beijing 100083,china. 2.Hunan Administration of Coalfield Geology,Changsha 411114,china

The northern type Longtan Formation of the Late Permian in central Hunan is dominated by an assemblage of greyish black mudstone,siltstone, sandy mudstone,fine sandstone and coals,and contains a variety of sedimentary... 详细信息

关键词： central Hunan sedimentary facies coal accumulation Longtan Formation

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Coal-Forming Model in the Context of Non-marine Sequence Stratigraphy:A Case Study of Jurassic Coal Measures in Northern Qaidam Basin,Northwestern china

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地学前缘 2009年第S1期16卷 128-129页

作者： Jing Lu~1,Longyi Shao~1,Taijin Liu~2,Qi Ju~2,Huaijun Wen~2,Hao Wang~1 1.department of resources and earth sciences,china university of mining and technology(beijing),beijing 100083,china. 2.Qinghai Administration of Coal Geology,Xining 810000,china

Previous studies of coal sequence stratigraphy have concentrated on coals associated with paralic depositional *** attention has been paid to their counterparts in non-marine intra-mountain coal *** northern Qaidam Basin of northwestern china has been extensively developed with abundant oil and gas as well as coal resources in its Jurassic non-marine successions.A total of six sedimentary systems of the Early and Middle Jurassic

关键词： northern Qaidam Basin Jurassic depositional environment sequence stratigraphy coal accumulation

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Edge Effect Correction in the S-A Method for Geochemical Anomaly Separation

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Journal of china university of Geosciences 2004年第4期15卷 379-387页

作者： Ge Yong department of earth and Atmospheric Science, York university, Toronto, ON, M3J 1P3, Canada State Key Laboratory of resources and Environmental Information System, Institute of Geographic sciences & Natural resources Research, Chinese Academy of sciences, beijing 100101, china Cheng Qiuming department of earth and Atmospheric Science, York university, Toronto, ON, M3J 1P3, Canada earth Systems and Mineral Resource engineering Lab, china university of Geosciences, Wuhan 430074, china Zhang Shenyuan department of earth and Atmospheric Science, York university, Toronto, ON, M3J 1P3, Canada department of Resource and earth Science, china university of mining & technology, beijing 100083, china department of earth and Atmospheric Science York University Toronto ON M3J 1P3 Canada State Key Laboratory of resources and Environmental Information System Institute of Geographic Sciences & Natural Resources Research Chinese Academy of SciencesBeijing 100101China department of earth and Atmospheric Science York University Toronto ON M3J 1P3 Canada earth Systems and Mineral Resource engineering Lab China University of Geosciences Wuhan 430074 China department of earth and Atmospheric Science York University Toronto ON M3J 1P3 Canada department of Resource and earth Science China University of Mining & Technology Beijing 100083 China

Anomaly separation using geochemical data often involves operations in the frequency domain, such as filtering and reducing noise/signal ratios. Unfortunately, the abrupt edge truncation of an image along edges and holes (with missing data) often causes frequency distribution distortion in the frequency domain. For example, bright strips are commonly seen in frequency distribution when using a Fourier transform. Such edge effect distortion may affect information extraction results; sometimes severely, depending on the edge abruptness of the image. Traditionally, edge effects are reduced by smoothing the image boundary prior to applying a Fourier transform. Zero-padding is one of the most commonly used smoothing methods. This simple method can reduce the edge effect to some degree but still distorts the image in some cases. Moreover, due to the complexity of geoscience images, which can include irregular shapes and holes with missing data, zero-padding does not always give satisfactory results. This paper proposes the use of decay functions to handle edge effects when extracting information from geoscience images. As an application, this method has been used in a newly developed multifractal method (S-A) for separating geochemical anomalies from background patterns. A geochemical dataset chosen from a mineral district in Nova Scotia, Canada was used to validate the method.

关键词： edge effect correction fractal modeling spatial information extraction zero-padding decay functions.

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Combination of drainage, water supply and environmental protection as well as rational distribution of water resource in Zhengzhou mining district

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Science china earth sciences 2005年第10期48卷 1768-1779页

作者： WU Qiang1, LI Duo1,2, DI Zhiqiang3, MIAO Ying3, ZHAO Suqi4 & GUO Qiwen5 1. Resource Exploitation engineering College, CUMT, beijing 100083, china 2. Shijiazhuang engineering College, university of Economics, Shijiazhuang 050031, china 3. Shenyang Institute of Geology and Mineral resources, Shenyang 110032, china 4. State Adminstration of Coal Mine safety, beijing 100013, china 5. Zhengzhou Coal Mine Company (Group), Zhengzhou 452371, china Resource Exploitation engineering College CUMT Beijing China Shijiazhuang engineering College university of Economics Shijiazhuang china Shenyang Institute of Geology and Mineral resources Shenyang china State Adminstration of Coal Mine safety beijing china Zhengzhou Coal Mine Company (Group) Zhengzhou china

The geological condition of coalfield is much complex in china. With increasing in mining depth and drainage amount, the contradiction of drainage, water supply and environ-mental protection is becoming more and more serious. However, the contradiction can be solved by the scientific management of optimizing combination of drainage, water supply and environ-mental protection. The Philip multiple objectives simplex method used in this article has searched for a possible solution at the first step, and then it goes on searching to find out whether there is a weight number that can lead the solution to the biggest. It can reduce the randomness and diffi-culty of traditional weight method which determine the weight number artificially. Some beneficial coefficients are vague and the number is larger in the model of water resource dispatch. So the vague layer analysis method can consider these vague factors fully, combining the qualitative and quantitative analysis together. Especially, this method can quantify the experiential judge-ment of policy decider, and it will turn to be more suitable if the structure of objective factors is complex or the necessary data are absent. In the paper, the two methods above are used to solve the plans of drainage, water supply and optimizing distribution of water resource in the Zhengzhou mining district.

关键词： combination of drainage, water supply and environmental protection, Philip multiple objective simplex method, vague layer analysis method, distribution of water resource.

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Sequence Stratigraphy and Paleogeography of the Early and Early Middle Jurassic Coal Measures in the Turpan-Hami Basin,Northwestern china

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地学前缘 2009年第S1期16卷 156-156页

作者： Di Gao,Longyi Shao,Zhong Luo department of resources and earth sciences,china university of mining and technology(beijing),beijing 100083,china.

This paper analyses the sequence stratigraphy and palaeogeography of the Early and early Middle Jurassic coal measures in the Turpan-Hami Basin, northwestern *** controls of the palaeogeography and sequence stratigraphy on the coal accumulation in this basin have been *** results show that the coal measures were formed in a fluvial-delta-lacustrine sedimentary system,and a total of 4 third-order sequences were developed,

关键词： lithofacies palaeogeography coal accumulation sequence stratigraphy Jurassic Turpan-Hami Basin

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Mineralogy and Possible Sources of Dust Particles During One Asian Dust Episode

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地学前缘 2009年第S1期16卷 108-108页

作者： Longyi Shao,Weijun Li State Key Laboratory of Coal resources and Safe mining,department of resources and earth sciences,china university of mining and technology(beijing),beijing 100083,china.

A severe Asian Dust Storm(ADS)event occurred on April 16-17th,2006 in northem *** components of dust samples were analyzed using X-ray diffraction(XRD).The result indicates that dust particles were dominated by quartz(37.4%)and clay (32.9%),followed by plagioclase(13.7%),with small amounts of calcite,K-feldspar,dolomite,homblende, and gypsum(all<10%).The clay fractions with diameter less than 2μm were separated from the

关键词： Asian Dust Storm(ADS) mineralogy X-ray diffraction(XRD) clay minerals dust aerosol mineral ratios

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