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地学前缘 2009年第S1期16卷 141-142页

作者： Ying Song~(1,2),Jianye Ren~3,Huaizhong Yang~2 1.Key Laboratory of Tectonics and petroleum Resources(china university of Geosciences),Ministry of Education,Wuhan 430074,china. 2.Faculty of Earth Resources,china university of Geosciences(Wuhan),Wuhan 430074,china 3.Structural research center of Oil&Gas Bearing basin,Ministry of Education,Branch center in china university of Geosciences,Wuhan 430074,china

Well-preserved Cretaceous lacustrine deposits in Songliao basin NE china provide a unique oppor- tunity both for building the terrestrial type stage of Cretaceous in china and for studying the response of Cretaceous major global geological *** basin had undergone three stages of tectonic evolution during the Late Jurassic and Cretaceous:syn-rifting phase,post-rifting thermal subsidence phase and basin inversion *** shallow strata of Yaojia Formation contain excellent Putaohua and Sartu reservoir rocks,which contribute great to the giant

关键词： Songliao basin tectonic inversion responding surface tectonic revolution

Potential recoverable natural gas resources in china

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petroleum Science 2008年第1期5卷 83-86页

作者： Liu Chenglin Zhu Jie Che Changbo Liu Guangd School of Resource and Information China University of Petroleum Beijing 102249 China Oil and Gas Resource Strategy research center of the Ministry of Land and resource Beijing China

Natural gas resources in china are abundant. The undiscovered recoverable natural gas resources in china are estimated to be 19.27 ×10^12 m^3. Natural gas is mainly distributed in the middle and west china and offshore areas of china. The Tarim basin, Sichuan basin, Ordos basin, East china Sea basin, Tsaidam basin, Yinggehai basin, and Qiongdongnan basin are the main gas-bearing basins. The natural gas resources are not distributed evenly and are under-explored in china. The deeper horizons in east china, foreland basins and craton paleo-uplifts in the middle and west china, and the offshore basins are the main exploration areas in the future.

关键词： Natural gas resources exploration area china

The Characteristics of the Bottom Boundary(T11) of Late Cretaceous Yaojia Formation in Songliao basin and Its Dynamic Background

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地学前缘 2009年第S1期16卷 173-174页

作者： Ying Song~1,Jianye Ren~2 1.Faculty of Earth Resources,china university of Geosciences,Wuhan 430074,china. 2.Structural research center of Oil & Gas Bearing basin,Ministry of Education,Branch center in china university of Geosciences,Wuhan 430074,china

Well-preserved Cretaceous lacustrine deposits in Songliao basin NE china provide a unique opportunity both for building the terrestrial type stage of Cretaceous in china and for studying the response of Cretaceous maj... 详细信息

关键词： Songliao basin T11 boundary tectonic inversion responding surface tectonic revolution

NUMERICAL SIMULATION OF GAS-WATER LEAKAGE FLOW IN A TWO LAYERED COALBED SYSTEM

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Journal of Hydrodynamics 2009年第5期21卷 692-698页

作者： ZHANG Xian-min TONG Deng-ke XUE Li-li School of petroleum Engineering China University of Petroleum Dongying 257061 China School of Mathematics and Computational Sciences China University of Petroleum Dongying 257061 China

For a two layered coalbed system in possession of the slightly permeable interlayer, a mathematical model was established to describe the methane and water flows between coal seams and the internal migration and the distribution of fluids in a slightly permeable interlayer. Meanwhile, this model has included the potential effect of matrix shrinkage associated with desorption on the coal permeability. The numerical results were obtained by the finite difference method, and then the production forecasts for the two layered coalbed system were conducted in combination with the geological data of a certain area in the Qinshui basin. Through analyzing the internal migration and distribution of fluids in the slightly permeable interlayer and its effect on the coalbed methane well production, the results indicate that the prediction of the gas production rate and the cumulative gas production will be higher if the permeability of the interlayer is neglected. Furthermore, it is also found that the matrix shrinkage could produce an effect on the coal permeability, thus affecting the production performance.

关键词： coalbed methane leakage flow two layered coalbed system numerical simulation

Application of a neural network system combined with genetic algorithm to rank coalbed methane reservoirs in the order of exploitation priority

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petroleum Science 2008年第4期5卷 334-339页

作者： Li Weichao Wu Xiaodong Shi Junfeng Key Laboratory of petroleum Engineering Ministry of Education China University of Petroleum Beijing 102249 China

A new method based on the combination of a neural network and a genetic algorithm was proposed to rank the order of exploitation priority of coalbed methane reservoirs. The neural network was used to acquire the weights of reservoir parameters through sample training and genetic algorithm was used to optimize the initial connection weights of nerve cells in case the neural network fell into a local minimum. Additionally, subordinate functions of each parameter were established to normalize the actual values of parameters of coalbed methane reservoirs in the range between zero and unity. Eventually, evaluation values of all coalbed methane reservoirs could be obtained by using the comprehensive evaluation method, which is the basis to rank the coalbed methane reservoirs in the order of exploitation priority. The greater the evaluation value, the higher the exploitation priority. The ranking method was verified in this paper by ten exploited coalbed methane reservoirs in china. The evaluation results are in agreement with the actual exploitation cases. The method can ensure the truthfulness and credibility of the weights of parameters and avoid the subjectivity caused by experts. Furthermore, the probability of falling into local minima is reduced, because genetic the algorithm is used to optimize the neural network system.

关键词： Coalbed methane neural network system genetic algorithm evaluation index weight

The control of syndepositional faulting on the Eogene sedimentary basin fills of the Dongying and Zhanhua sags, Bohai Bay basin

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Science china Earth Sciences 2004年第9期47卷 769-782页

作者： LIN Changsong1, ZHENG Herong2, REN Jianye1, LIU Jingyan1 & Qiu Yigang1 1. Department of Energy Geology, china university of Geosciences, beijing 100083, china 2. petroleum Exploration and Production Institute, Sino-petroleum and Chemistry Cooperation, beijing 100083, china china Univ Geosci Dept Energy Geol Beijing 100083 Peoples R China Sino Petr & Chem Cooperat Petr Explorat & Prod Inst Beijing 100083 Peoples R China

The Dongying and Zhanhua sags are the major hydrocarbon exploration and produc- tion subbasins in the Bohai Bay basin. Integrated analysis of the sedimentary basin fills has shown that the syndepositional faults and their arrangement styles exerted an important influ- ence on the development and distribution of the Eogene depositional systems. The sedimentary filling evolution of the subbasins reflects the general control of the episodic rifting process. The major long-term active normal faults formed a series of paleogeomorphic accident or slopebreak zones that commonly delineated the subsidiary palaeostructural units and the depositional facies tracts and constrained the general distribution of sedimentary facies zones. The central sag boundary fault slopebreak zones usually determined the distribution of the depocenters of ter- restrial clastic depositional systems, particularly the lowstand fans or deltaic depositional sys- tems, and have proven to be the economically important targets for the exploration of subtle sandstone reservoirs. A variety of syndepositional fault arrangement patterns, including the par- allel, en echelon, combo-like, broom-like fault systems and the fault overlap or transfer zones, have been recognized in the subbasins. They generated distinctive geomorphic features and exerted a direct influence on sediment dispersal and sandbody distribution during the Eogene synrift stage. It is the key for the prediction of depositional systems tracts and reservoir sand- stones to investigate the activity and distribution of the fault slopebreak zones and reconstruct the structural paleogeomorphy in different basin filling stages of the basin evolution.

关键词： episodic rifting, fault slopebreak zone, depositional pattern, Bohai Bay basin.

Reconstruction of precipitation variation from tree rings in recent 1000 years in Delingha, Qinghai

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Science china Earth Sciences 2005年第7期48卷 939-949页

作者： SHAO Xuemei1, HUANG Lei1, LIU Hongbin2, LIANG Eryuan1, FANG Xiuqi3 & WANG Lili1 1. Institute of Geographic Sciences and Natural Resources research, Chinese Academy of Sciences, beijing 100101, china 2. National Climate center, beijing 100081, china 3. beijing Normal university, beijing 100875, china Institute of Geographic Sciences Natural Resources Research Chinese Academy of Sciences Beijing 100101 China National Climate center Beijing 100081 China beijing Normal university Beijing 100875 China

Using seven well-replicated Qilian juniper (Sabina przewalskii Kom.) ring-width chronologies developed at Zongwulong and Shalike Mts. in the northeastern part of the Qaidam basin annual precipitation from previous July to current June in the recent 1000 years was re- constructed for Delingha. The reconstruction can capture 63.1% of precipitation variance and the equation was stable over time. For the reconstructed precipitation, wet periods occurred in AD1520—1633 and 1933—2001, whereas dry intervals in 1429—1519 and 1634—1741. In ad- dition, the magnitude in precipitation variation was lower before 1430 with about 15 mm, but it increased to 30 mm during the period of 1430 to 1850. After 1850, the precipitation variance de- creased again. In contrast to the increase in temperature, a decrease in annual precipitation was evident since the 1990s. The agreement in low-frequency variation between the reconstruction and the glacier accumulation and particulate content in Dunde ice cores during the recent several hundred years suggested that the precipitation reconstructed in this study was rather reliable, and represented a regional signal. This 1000-year reconstruction could benefit our understanding of climatic variation in decadal to century-scale in this region, and provide basic data to climate models and to prediction of future climate in the 21st century.

关键词： northeastern part of the Qaidam basin tree-ring width series of Qilian juniper precipitation reconstruction in 1000 years.

Advances and problems in hydrocarbon exploration in the Tazhong area, Tarim basin

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petroleum Science 2010年第2期7卷 164-178页

作者： Zhou Xinyuan Pang Xiongqi Li Qiming Pang Hong Xiang Caifu Jiang Zhenxne Li Sumei Liu Luofu Tarim Oilfield Company PetroChina Korla Xinjiang 841000 China basin and reservoir research center China University of Petroleum Beijing 102249 China State Key Laboratory of petroleum Resources and Prospecting Beijing 102249 China

Located in the middle of the Tarim basin, Tazhong is a typical area of compound reservoirs rich in oil and gas found in the Carboniferous, Silurian and Ordovician strata. The proved, probable and possible reserves （3P reserves） in the area amount to 5×108 tons, so it is of great significance to study the advances and problems in hydrocarbon exploration in the Tazhong area. On the basis of exploration history and analysis of scientific problems, we outline eight achievements： distribution characteristics of reservoirs, stages of reservoir formation, different sources of oil and gas and their respective contributions, the effective regional caprock and reservoir-caprock combinations dominating the vertical distribution of hydrocarbon reservoirs, the control of the Tazhong Palaeo-uplift on reservoir formation and establishing geologic models, structure balance belts influencing the reconstruction and residual potential of reservoirs after accumulation, the rules and mechanisms of fractures controlling oil and gas, and the types of favorable reservoirs and their characteristics of controlling oil and gas distribution. We further point out the main problems about the oil and gas exploration in the Tazhong area and put forward some relevant proposals.

关键词： Tarim basin petroleum geology and exploration controlling factors of hydrocarbon accumulation rules of hydrocarbon accumulation

^(137)Cs tracing of lacustrine sediments in the Dalian Lake,Qinghai Province,china

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Chinese Science Bulletin 2001年第S1期46卷 83-87页

作者： VAN Ping, DONG Guangrong & DONG Zhibaochina Certer of Desert research at beijing Normal university, beijing100875, china:Key Laboratory of Environmental Change and Natural Disaster, the Ministry of Education of china, beijing Normal university, beijing 100875, china Cold and Arid Regions Environmental and Engineering research Institute, Chinese Academy of Sciences, Lanzhou 730000, china 1. china Certer of Desert research at beijing Normal university 100875 Beijing China 2. Key Laboratory of Environmental Change and Natural Disaster The Ministry of Education of China Beijing Normal University 100875 Beijing China 3. Cold and Arid Regions Environmental and Engineering research Institute Chinese Academy of Sciences 730000 Lanzhou China

Based upon the analysis of Cs and grain-size parameters, the total amounts of 137Cs deposition by wind and water in the Dalian Lake of Gonghe basin, Qinghai Province are defined. The vertical profile of 137Cs in the lacustrine sediments exhibits three 137Cs activity maxima and one minimum. The major maximum corresponds to the global I37Cs fallout in 1963; the two secondary maxima correspond to the leakage of the Chernobyl reactor in 1986 and complete desiccation of the lake in 1994, respectively. The minimum corresponds to aeolian deposition caused by extensive reclamation in the late 1980s and early 1990s. The 137Cs data set was used to evaluate average sedimentation rate of the Dalian Lake since 1963. The deposition was stable in 1963-1986 and 1994-1998, and it was rapid during 1986?994. This preliminary study reveals that l37Cs has the same potential to trace environmental changes introduce by human interference in arid/semiarid regions as in humid regions.

关键词： 137Cs technique Dalian Lake sedimentation rate.

Characteristics,genesis and accumulation history of natural gas in Hetianhe gasfield,Tarim basin,china

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Science china Earth Sciences 2008年第S1期51卷 84-95页

作者： WANG ZhaoMing 1 ,WANG QingHua 1 ,ZHAO MengJun 2 ,LI Yong 1 &XU ZhiMing 3 1 Tarim Oilfield Company,Petrochina,Kuerle 841000,china 2 research Institute of petroleum Exploration&Development,Petrochina,beijing 100083,china 3 Southwest petroleum Institute,Nanchong 637001,china Petrochina Res Inst Petr Explorat & Dev Beijing 100083 Peoples R China Petrochina Tarim Oilfield Co Kuerle 841000 Peoples R China SW Petr Inst Nanchong 637001 Peoples R China

Hetianhe gasfield in Bachu region of the Tarim basin is mainly composed of three reservoir-caprock assembly,namely regional caprock of upper mudstone,middle mudstone and lower mudstone of the Carboniferous and reservoir of Bachu bioclastic limestone,glutenite and the Ordovician carbonate buried *** gas in Hetianhe gasfield sourced from the Cambrian source *** is thought that gases in Ma4 well block in the east of Hetianhe gasfield are mainly crude-oil cracked gases,while those in Ma3 and Ma8 well blocks in the west are the mixture gases of kerogen cracked gases and crude-oil cracked *** gas is rich in H2S and accumulated in multiply stages as the result of *** accumulation history is divided into three stages,namely accumulation and breakage in the late Caledonian-early Hercynian,migration and dissipation in the late Hercynian and accumulation in Himalayan. The main accumulation of reformed gas reservoir is in Himalayan.

关键词： gas characteristics gas genesis accumulation history Hetianhe gasfield Tarim basin