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| 1 | Petroleum geological characteristics of Kela-2 gas field显示文摘The Kela-2 gas field is located in the center ofKelasu structural belt in Kuqa Depression. This trap is oneof a series of traps in the folded belts which are distributed ina string of pearls in the dual structure. The primary gas-bearing layers are sandstone of Lower Cretaceous K1bswhile the secondary layers are dolomite member and gluten-ite member of Lower Tertiary E1-2km and sandstone ofLower Cretaceous K1b. The main component of natural gasis methane whose content is higher than 97%. It is charac-terized by dry gas whose source rock is Jurassic coal meas-ure. The Kela-2 structural trap was formed during the Xiyuperiod and then became a reservoir in the late time. The res-ervoir formed late and the thick seal rock of Lower Tertiarygipsmantle are the avail reason why the giant Kela-2 gasfield has been well kept. The abnormal high pressure of theKela-2 gas field results from the strong structural compres-sion in the northern part during the Xiyu period. | JIA Chengzao ZHOU Xinyuan WANG Zhaoming LI Qiming PI Xuejun CAI Zhenzhong HU Xiaoyong | 2002 | Chinese Science Bulletin2002，47，S1： | 4 |
| 2 | Mechanisms of abnormal overpressure generation in Kuqa foreland thrust belt and their impacts on oil and gas reservoir formation显示文摘Based on overview for mechanism of abnormaloverpressure generation in sedimentary basins, an insightdiscussion is made by the authors for the distribution, fea-tures and generation mechanisms of abnormal overpressurein the Kuqa foreland thrust belt. The abnormal overpressurein the Kelasu structure zone west to the Kuqa forelandthrust belt was primarily distributed in Eogene to lowerCretaceous formations; structural compression and struc-tural emplacement as well as the containment of Eogenegyps-salt formation constituted the main mechanisms for thegeneration of abnormal overpressure. The abnormal over-pressure zone in the eastern Yiqikelike structure zone wasdistributed primarily in lower Jurassic Ahe Group, resultingfrom hydrocarbon generation as well as structural stressother than from under-compaction. Various distributionsand generating mechanisms have different impacts upon theformation of oil and gas reservoirs. K-E reservoir in the Ke-lasu zone is an allochthonous abnormal overpressure system.One of the conditions for reservoir accumulation is the mi-gration of hydrocarbon (T-J hydrocarbon source rock) alongthe fault up to K-E reservoir and accumulated into reservoir.And this migration process was controlled by the abnormaloverpressure system in K-E reservoir. The confined abnor-mal overpressure system in the Yiqikelike structure zoneconstituted the main cause for the poor developing of dis-solved porosity in T-J reservoir, resulting in poor physicalproperty of reservoir. The poor physical property of T-J res-ervoir of Yinan 2 structure was the main cause for the ab-sence of oil accumulation, but the presence of natural gasreservoir in the structure. | PI Xuejun XIE Huiwen ZHANG Cun TIAN Zuoji | 2002 | Chinese Science Bulletin2002，47，S1： | 3 |
| 3 | Principle of Variation of Active Oxygen Radical Metabolism of Chicks Artificial-Infected with vMDV显示文摘1IntroductionTheactiveoxygenradical(AOR)inabroadsenseincludeO2-,·OH,O1/2andH2O2.AORmaydamagetheorganismextensively,andtheDNAd... | Li Qingzhang, Hao Yanhong, Chi Yujie, Zhong Pi, Gao Xuejun, Wei Ping, Yu Hongxiang, Xu Baorong, Ge Ming, Qu Qihuan (Department of Animal Physiology and Biochemistry, Northeast Agricultural University, Harbin 150030, PRC) | 1998 | Journal of Northeast Agricultural University(English Edition)1998，5，2： | 0 |
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