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Zircon U-Pb SHRIMP Ages from the Late Paleozoic turpan-hami basin,NW China

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Journal of Earth Science 2014年第5期25卷 924-931页

作者： Xiang Mao Jianghai Li Huatian Zhang The Key Laboratory of Orogenic Belts and Crustal Evolution Ministry of Education School of Earth and Space SciencesPeking University Institute of Oil and Gas Peking University

Permian volcanic rocks are widely distributed in the turpan-hami basin, which is part of the Central Asian orogenic belt. Here we present SHRIMP zircon data for the rhyolite in Well Baocan 1, one of the deepest wells in the basin. The 283.9±2.7 Ma reported in our study provides the best precise age determination for the Yierxitu Formation, the oldest Permian layer of hami Depression, one of the three substructural units of the turpan-hami basin, and a potential hydrocarbon reservoir in this basin. Our data refines earlier imprecise 39^Ar-40^Ar ages and shows that the volcanic rocks both inside the turpan-hami basin and along its margin are almost coeval. We delineate a collisional orogenesis, and the new age of 283.9±2.7 Ma may limit the latest time of the collision orogenesis.

关键词： SHRIMP U-Pb zircon geochronology turpan-hami basin Permian Yierxitu Forma-tion Central Asian orogenic belt.

Oil accumulation related to migration of source kitchens in the Lukeqin structural belt, turpan-hami basin, China

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Petroleum Science 2010年第3期7卷 355-361页

作者： Liu Bo Huang Zhilong Tu Xiaoxian Sang Tingyi Chen Xuan State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing 102249 China PetroChina turpan-hami Oilfield Company Hami Xinjiang 839009 China

The Lukeqin structural belt is the main heavy oil accumulation zone in the turpan-hami basin. The recent discovery of light oil in the Triassic indicates that there may be multiple source kitchens contributing to the oil accumulation. According to oil geochemical analysis and oil-source correlation, the oil in deep and shallow reservoirs of the Lukeqin Oilfield presents different physical and saturated hydrocarbon mass spectrum characteristics. The Triassic heavy oil is from the northern Upper Permian lacustrine source rocks, and the light oil represented by the Yudong-9 Well is from the northwestern Lower Jurassic coal-measure source rocks. The timing of oil charging was determined by K/Ar isotope dating, reservoir fluid inclusion analysis and the evolution history of different source rocks. In summary, the accumulation process consists of two stages. From the end of Triassic to early Jurassic, the northern Permian source kitchen generated a considerable amount of oil, which was finally degraded to heavy oil, migrated to the south and then accumulated. The northwestern Jurassic coal-measure source kitchen began to generate oil at the end of Cretaceous, while the northern source kitchen could only generate a little hydrocarbon. The heavy oil and the light oil have different source rock locations, migration directions and accumulation times. The migration of hydrocarbon source kitchens affects the distribution of heavy oil and light oil reservoirs at the present time.

关键词： Source kitchen light oil oil-source correlation timing of oil charging turpan-hami basin

New progresses on geothermal history of turpan-hami basin,Xinjiang,China

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Science China Earth Sciences 2001年第2期44卷 166-176页

作者：柳益群袁明生周鼎武冯乔荐军 1. Department of Geology Northwest University 710069 Xi’an China 2. turpan-hami Oil Field 839001 Hami China

A comprehensive study on geothermal history of the turpan-hamibasin by vitrinite reflectance, fluid inclusion geothermometry, apatite fission track and 40Ar-39Ar dating displays that the main effects influencing geotemperature distribution are burial depth of the basement, heat flow, magmatic activities, as well as tectonic movement, having a rugulation to be higher in the east and north, lower in the west and south, as well as higher in the past and lower at the present. The heat of the mantle source and the Indo-China tectonic thermal event have extremely influenced matura-tion of source rocks of the upper Lower Permian and the Middle and Upper Triassic in the lndo-China epoch. While, the geothermal gradient and the weak tectonic geothermal event of the Early Yanshan Movement provided necessary heat for the maturation of source rock in coal-bearing strata of the Middle and Lower Jurassic.

关键词： turpan-hami basin geothermal history geothermal gradient tectonic thermal event vitrinite reflectance fluid inclusion geothermometry apatite fission track

A Comprehensive Appraisal on the Characteristics of Coal-Bed Methane Reservoir in turpan-hami basin

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Journal of China University of Mining and Technology 2007年第4期17卷 521-525,545页

作者： TANG Shu-heng WANG Yan-bin ZHANG Dai-sheng School of Energy Resources China University of Geosciences Beijing 100083 China School of Mineral Resources and Safety Engineering China University of Mining and Technology Beijing 100083 China

The rich coal-bed methane resources in the turpan-hami basin are mainly located in the Shisanjianfang,hami,Shanshan,Sha'erhu,Kekeya,Kerjian,Aidinghu inclines and the Dananhu coal-bed methane reservoirs. The big-ger coal-bed reservoirs are sitting at a depth of less than 1500 m. The coalbed methane generation,storage and confin-ing conditions of the turpan-hami basin can be indicated by eight key parameters. They are coal-bed thickness,coal rank,missing period,permeability,Langmuir volume,rock covering ability,structural confinement and hydrodynamic sealing environment. These parameters constitute a comprehensive appraisal index system of the coal-bed methane res-ervoir characteristics of the turpan-hami basin. In these parameters,the missing period of coal-bed methane is indi-cated by a stratum missing intensity factor. It reflects the relative exposure period of coal series. The results of a fuzzy comprehensive judgment showed that the Shisanjianfang coal-bed methane reservoir has the best prospects for exploita-tion and the Sha'erhu,Shanshan,hami coal-bed methane reservoirs are next in line.

关键词： coal-bed methane reservoir-forming characteristics key index fuzzy comprehensive judgment turpan-hami basin

Reservoir characteristics and controlling factor of tight sandstone in Shuixigou Group in Taibei depression,turpan-hami basin

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Energy Geoscience 2024年第2期5卷 70-80页

作者： Tong Lin Xuan Chen Fan Yang Hongguang Gou Mingyu Liu Runze Yang PetroChina Research Institute of Petroleum Exploration&Development Beijing100083China Research Institute of Exploration&Development PetroChina Tuha Oilfield Company HamiXinjiang839009China China University of Geosciences(Beijing) Beijing100083China

The positive structure belts surrounding the Taibei Sag,turpan-hami basin,have been the main targets for oil and gas exploration for years and are now left with remaining resources scattering in reservoirs adjacent to source rocks in the sag,where the Shuixigou Group with substantial oil and gas potential constitutes the primary focus for near-source ***,characterization of development and key controlling factors of reservoir space becomes a must for future exploration in the *** study investigates the development traits,genesis,and controlling factors of the Xishanyao and Sangonghe formations in the Shengbei and Qiudong Sub-sags of the Taibei Sag with techniques such as cast thin-section observation,porosity and permeability tests,high-pressure mercury injection,and saturation fluid NMR analysis of reservoir *** findings reveal that the Shuixigou Group in the Taibei Sag consists of lithic *** in the group are mostly poor in terms of physical properties,with undeveloped primary pores dominated by intergranular dissolved pores as a result of a strong *** analysis of key controlling factors of the Sangonghe Formation reveals significant distinctions in sandstone particle size,sand body thickness,genesis and distribution,provenance location,and source rock type between the Qiudong area and Shengbei ***,the coal seams of the Xishanyao Formation exhibit heightened development with shallower burial depth and lower maturity compared to those of the Sangonghe ***,this environment fosters the formation of organic acids,which have a stronger dissolution effect on minerals to develop secondary dissolution pores,and ultimately resulting in better reservoir physical ***,the reservoirs within the Qiudong area of the Taibei Sag demonstrate superior characteristics compared to those in the Shengbei ***,the reservoir physical properties of the Xishanyao For

关键词： Intergranular dissolved pore Organic acid dissolution Secondary dissolution pore Tight sandstone Shuixigou group turpan-hami basin

Discovery of Mass Independent Oxygen Isotopic Compositions in Superscale Nitrate Mineral Deposits from turpan-hami basin,Xinjiang,China and Its Significance

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Acta Geologica Sinica(English Edition) 2010年第6期84卷 1514-1519页

作者： LI Yanhe QIN Yan LIU Feng HOU Kejun WAN Defang Institute of Mineral Resource the Chinese Academy of Geological Sciences Beijing 100037 China Key Laboratory of Isotope Geology Ministry of Land and Resources Beijing 100037 China

The turpan-hami basin in eastern Xinjiang is one of the driest regions on Earth and a premier environment to form and preserve nitrate.A large nitrate ore field in this basin was found *** is estimated there are about 2.5 billion tons of resources of nitrate,and the amount is as much as the Atacama Desert super-scale nitrate deposit in *** is one of a few minerals with mass-independent fractionation（MIF）,and the oxygen isotope MIF is an effective method to determine the source of ***δ^（17）O,δ^（18）O of nitrate were measured by fluorination and thermal decomposition *** date indicated that this is the first time that oxygen isotope MIF has been located in inland nitrate *** results obtained by two methods are similar,⊿^（17）=δ^（17）O-0.52×δ^（18）O=12‰-17‰.The experiment and observation data proved that oxygen isotope MIF of nitrate are the result of photochemical reactions in the troposphere and ***, evidence from MIF oxygen isotopic compositions indicate that long term atmospheric deposition of nitrate aerosol particles produced by photochemical reactions is the source of the deposits.

关键词： nitrate deposit mass-independent fractionation of oxygen isotope turpan-hami basin Xinjiang

Types of Organic Fades and Source Rock Assessment of the Coal-Measure Mudstone in the turpan-hami basin

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Acta Geologica Sinica(English Edition) 1998年第2期72卷 169-179页

作者： ZHAO Changyi, DU Meili, SHAO Longyi, CHEN Jianping,CHENG Kerning and HE ZhonghuaResearch Institute of Petroleum Exploration and Development,China National Petroleum Corporation, 20 Xueyuan Rd., Beijing 100083Beijing Graduate School of China University of Mining and Technology,11 Xueyuan Rd., Beijing 100083

This paper discusses the enviromental characteristics of carbonaceous mudstone and mudstone (coal-measure mudstone in short) of the Early and Middle Jurassic in the turpan-hami basin, which were formed in swamps. Through the organic facies study of the coal-measure mudstone in this area, the authors clarify that the flowing-water swamp is the most advanced organic facies belt. Furthermore, according to the practical materials of coal-measure mudstone in the area and with the evaluation criteria of lacustrine mudstone in the past, the authors have established the integrated symbol systems from the abundance of organic matter and the type of organic matter, which can be used in the source rock evaluation of the coal-measure mudstone.

关键词： hydrocarbon from coal coal-measure mudstone organic facies source rock assessment turpan-hami basin

The Characteristics and Genesis of the Massive Nitrate Deposits in the turpan-hami basin of Xinjiang,China

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 218-219页

作者： GE Wensheng Greg MICHALSKI CAI Keqin WANG Fan LIU Yaran School of Earth Sciences and Resources China University of Geosciences Department of Earth and Atmospheric Sciences Purdue University

Massive nitrate deposits have been discovered in the turpan-hami basin in northwestern ***,large ore grade nitrate minerals were thought only to exist in the Atacama Desert in northern *** of the

关键词： Nitrate photochemical reaction oxidation of ammonium turpan-hami basin Xinjiang

POSITIVE INVERSION STRUCTURE OF THE CENTRAL STRUCTURE BELT IN turpan-hami basin

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Geotectonica et Metallogenia 2003年第1期27卷 179-190页

作者： ZHU Wenbin , MA Ruishi, GUO Lingzhi, SUN Yan, XU Mingjie and HU Dezhao(Department of Earth Sciences, Nanjing University, Nanjing, JS 210093, China) Department of Earth Sciences Nanjing University Nanjing JS 210093 China

The central structure belt in turpan-hami basin is composed of the Huoyanshan structure and Qiketai structure formed in late Triassic-early Jurassic, and is characterized by extensional tectonics. The thickness of strata in the hanging wall of the growth fault is obviously larger than that in the footwall,and a deposition center was evolved in the Taibei sag where the hanging wall of the fault is located. In late Jurassic the collision between Lhasa block and Eurasia continent resulted in the transformation of the turpan-hami basin from an extensional structure into a compressional structure, and consequently in the tectonic inversion of the central structure belt of the turpan-hami basin from the extensional normal fault in the earlier stage to the compressive thrust fault in the later stage. The Tertiary collision between the Indian plate and the Eurasian plate occurred around 55Ma, and this Himalayan orogenic event has played a profound role in shaping the Tianshan area, only the effect of the collision to this area was delayed since it culminated here approximately in late Oligocene-early Miocene. The central structure belt was strongly deformed and thrusted above the ground as a result of this tectonic event.

关键词： turpan-hami basin central structure belt growth fault positive inversion structure