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Discovery and geological knowledge of the large deep coal-formed qingyang Gas Field, Ordos Basin, NW China

Petroleum Exploration and Development 2019年第6期46卷 1111-1126页

作者： FU Jinhua WEI Xinshan LUO Shunshe ZUO Zhifeng ZHOU Hu LIU Baoxian KONG Qingfen ZHAN Sha NAN Junxiang PetroChina Changqing Oilfield Company Xi’an 710018China National Engineering Laboratory of Low Permeability Oil and Gas Field Exploration and Development Xi’an 710018China Research Institute of Exploration and Development PetroChina Changqing Oilfield CompanyXi’an 710018China Hubei Cooperative Innovation Center of Unconventional Oil and Gas(Yangtze University) Wuhan 430000China Exploration Department PetroChina Changqing Oilfield CompanyXi’an 710018China

After 50 years of oil and gas exploration in Longdong area of southwest Ordos Basin,NW China,a deep coal-formed gas field was discovered for the first time in qingyang *** observation of field outcrops and core,analysis of common,cast and cathode thin sections,Ro and other geochemistry indexes,carbon isotope,electron microscope and other supporting tests and analyses,the hydrocarbon generation,reserves formation and reservoir formation characteristics of gas reservoirs at different buried depths in Yishaan slope were examined and *** deep gas reservoir has an average buried depth of more than 4200 m,and the main gas-bearing formation is the Member 1 of Lower Permian Shanxi Formation,which is characterized by low porosity,low permeability,low pressure and low *** is believed that hydrocarbon generation in thin seam coal source rocks with high thermal evolution can form large gas fields,high-quality sandstone reservoirs with dissolved pores,intergranular pores and intercrystalline pores can still develop in late diagenetic stage under deep burial depth and high thermal evolution,and fractures improve the permeability of *** drying coefficient of natural gas and negative carbon isotope series are typical geochemical characteristics of deep coal-formed *** integrated exploration and development method has been innovated,and the economic and effective development mode of gas fields of"dissecting sand body by framework vertical wells,centralized development by horizontal wells"has been *** discovery and successful exploration of the large gas field has provided geological basis and technical support for the construction of natural gas fields of 100 billion cubic meter scale in the southwest of the basin,and has important guidance for exploration of coal-derived gas with deep buried depth and high thermal evolution widely distributed in China.

关键词： Ordos Basin Upper Paleozoic Lower Permian coal-formed gas deep formation high thermal evolution qingyang large gas field

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Cluster Analysis of the Agricultural Economic Development in the Districts and Counties of qingyang City

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Asian Agricultural Research 2014年第8期6卷 45-48页

作者： Zhongya MA Guizhou University of Engineering Science

From the perspective of economic growth,agricultural development,the development of township enterprises and farmers' income,we select 11 indicators to build the evaluation indicator system for the agricultural economic development in the districts and counties of qingyang City. Using data processing and SPSS13. 0 statistical software,we carry out the cluster analysis of the level of economic development in the districts and counties,and divide the level of agricultural economic development of these districts and counties into three economic gradients in descending order:(i) The first gradient: Xifeng;(ii) The second gradient: Qingchi and Huachi;(iii) The third gradient: Huanxian,Heshui,Zhengning,Ningxian and Zhenyuan. The study results systematically reflect the level of agricultural economic development in the districts and counties,and point out the status of the districts and counties in qingyang's agricultural economic development. Finally we put forth the corresponding recommendations.

关键词： Agricultural economy Cluster analysis qingyang

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Construction Planning of qingyang National Eco-county in Anhui Province

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Journal of Landscape Research 2013年第Z2期5卷 11-14页

作者： WANG Xiaohui WANG Fangfang HE Xiangliang Institute of Ecology Anhui Institute of Environmental Science School of Resources and Environmental Engineering Hefei University of Technology

Abstract On the basis of basic conditions of qingyang County,beneficial and restrictive factors for the construction of eco-county were analyzed,guiding concepts and planning objectives of the eco-county construction were *** construction of qingyang County dominated by eco-county,ecoagriculture,eco-industry and eco-tourism,and also the ecological implementation mode of planning were introduced,the safeguarding mechanism was given.

关键词： Eco-county Eco-construction Eco-planning qingyang

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