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Timing and history of marine hydrocarbon accumulation in Tarim craton

Chinese Science Bulletin 2002年第S1期47卷 120-127页

作者： ZHAO Jingzhou~(1,2) & LI Qiming~3 1. Department of petroleum Geology, Xi’an petroleum institute, Xi’an 710065, china 2. research institute of petroleum exploration and development, petrochina, Beijing 100083, china 3. Tarim Oilfield Company, Kuerle, Xinjiang 841000, china Department of petroleum Geology Xi’an Petroleum Institute Xi’an China research institute of petroleum exploration and development PetroChina Beijing China Tarim Oilfield Company Kuerle Xinjiang China

Based on the analyses of hydrocarbon inclu-sions, K-Ar dating of authigenic illites and oil/gas-watercontact retrospection as well as other methods, the marineprimary reservoirs in the cratonic region of the Tarim Basinare found to have been formed in the late Caledonian toearly Hercynian, late Hercynian, and Himalayan, and oil andgas adjusted and redistributed in the Yanshanian (Jurassic toCretaceous) and Himalayan (Tertiary). The analyses alsoshow that the remaining primary oil accumulations aremostly formed in the late Hercynian, and the secondary oilreservoirs resulted from the adjustment and redistribution ofthe earlier accumulations during the Yanshanian and Hima-layan (especially late Himalayan), of which the Himalayan isalso the major stage of gas accumulation. The primary oilreservoirs formed in the late Hercynian mostly occur withinthe Paleozoic formation, whereas the secondary reservoirsformed in the Himalayan in the Mesozoic. The late adjust-ment and redistribution of reservoirs in the craton region ofthe Tarim Basin is ubiquitous because of the intensified tec-tonic movements since the Mesozoic, especially Cenozoic andintrusion of the high- to over-mature gas. Furthermore, thelower amplitude of reservoirs in the craton region also makesthem easier to be adjusted and redistributed. Therefore, theremaining paleo-uplift and palaeo-slope developed in rela-tively stable tectonic regions are the main potential areas forthe middle-large marine reservoirs in the Tarim Basin.

关键词： Tarim Basin craton geochronology of hydrocarbon accumulation history of hydrocarbon accumulation marine reservoir primary reservoir secondary reservoir.

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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 Tarim Oilfield Company PetroChina Kuerle China research institute of petroleum exploration & development PetroChina Beijing China Southwest petroleum institute Nanchong 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

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ESTABLISHMENT OF THE GEOLOGICAL MODEL OF FRACTURED RESERVOIRS

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石油勘探与开发 1995年第6期22卷 90-97页

作者： Mu Long-xin (research institute of petroleum exploration and development, CNPC)

ＥＳＴＡＢＬＩＳＨＭＥＮＴＯＦＴＨＥＧＥＯＬＯＧＩＣＡＬＭＯＤＥＬＯＦＦＲＡＣＴＵＲＥＤＲＥＳＥＲＶＯＩＲＳ￥ＭｕＬｏｎｇ－ｘｉｎ（ＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆＰｅｔｒｏｌｅｕｍＥｘｐｌｏｒａｔｉｏｎａｎｄ... 详细信息

ＥＳＴＡＢＬＩＳＨＭＥＮＴＯＦＴＨＥＧＥＯＬＯＧＩＣＡＬＭＯＤＥＬＯＦＦＲＡＣＴＵＲＥＤＲＥＳＥＲＶＯＩＲＳ￥ＭｕＬｏｎｇ－ｘｉｎ（ＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆＰｅｔｒｏｌｅｕｍＥｘｐｌｏｒａｔｉｏｎａｎｄＤｅｖｅｌｏｐｍｅｎｔ，ＣＮＰＣ）...

关键词： Fracture Geological model Low permeability sandstone oil field

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Present geotemperature and its suggestion to natural gas generation in Xujiaweizi fault-depression of the northern Songliao Basin

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Science china Earth Sciences 2008年第S1期51卷 207-220页

作者： ZHOU QingHua 1,2 ,FENG ZiHui 3 &MEN GuangTian 3 1 research institute of petroleum exploration and development,petrochina,Beijing 100083,china 2 Geological Logging Subcompany of Daqing Oil Field Company Ltd.,Daqing 163411,china 3 research institute of petroleum exploration and development of Daqing Oil field Company Ltd.,Daqing 163732,china research institute of petroleum exploration and development PetroChina Beijing China Geological Logging Subcompany of Daqing Oil Field Company Ltd. Daqing China research institute of petroleum exploration and development of Daqing Oil field Company Ltd. Daqing China

According to stastistic of present geotemperatures at the depths of 1000,2000,3000 and 4000 m,respectively in the Xujiaweizi fault-depression of the north Songliao Basin,the result indicates that Xujiaweizi fault-depression falls in the high geotemperature area,with the higher geothermal gradient in the depression layer than that in the fault-depression *** geothermal gradient decreases with the increasing of the *** thermal conductivity of rock greatly controls the geothermal *** main factors constraining the current geotemperature include thermal configuration of the earth's crust, deep faults,distribution and abundance of *** high geotemperature is in favour of generation of deep gas.

关键词： Xujiaweizi fault-depression geotemperature geothermal gradient thermal conductivity of rock deep layer natural gas

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Formation mechanism of carbonate cemented zones adjacent to the top overpressured surface in the central Junggar Basin,NW china

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Science china Earth Sciences 2010年第4期53卷 529-540页

作者： YANG Zhi1,2,ZOU CaiNeng1,3,HE Sheng2,LI QiYan1,HE ZhiLiang3,WU HengZhi5,CAO Feng1,MENG XianLong4,WANG FuRong2 & XIAO Qilin21 State Key Laboratory of EOR,research institute of petroleum exploration & development,petrochina,Beijing 100083,china 2 Key Laboratory of Tectonics and petroleum Resources of Ministry of Education,china University of Geosciences,Wuhan 430074,china 3 State Key Laboratory of EOR,research institute of petroleum exploration & development,petrochina,Beijing 100083,china 4 research institute of petroleum exploration and Production,SINOPEC,Beijing 100083,china 5 Southwest branch Company,SINOPEC,Chengdu 610051,china State Key Laboratory of EOR Research Institute of Petroleum Exploration & Development PetroChina Beijing China Key Laboratory of Tectonics and petroleum Resources of Ministry of Education China University of Geosciences Wuhan China State Key Laboratory of EOR Research Institute of Petroleum Exploration & Development Petrochina Beijing China Southwest branch Company SINOPEC Chengdu China research institute of petroleum exploration and Production SINOPEC Beijing China

Carbonate cemented zones are normally adjacent to the top overpressured surface in the central Junggar Basin,NW *** carbon and oxygen isotopic compositions and petrological investigations of carbonate cements in the carbonate cemented zones indicate that:(1) carbonate cements are composed dominantly of ferrocalcite,ferroan dolomite,and ankerite;(2) carbonate cements are formed under a high temperature circumstance in the subsurface,and organic fluid migration has an important effect on the formation of them;and(3) carbon and oxygen ions in the carbonate cements migrate from the underlying overpressured *** suggests that the occurrence of carbonate cemented zones in this region results from multiple phases of organic fluid expulsion out of the overpressure compartment through geological *** study provides a plausible mechanism of the formation of carbonate cemented zones adjacent to the top overpressured surface in the clastic sedimentary basins,and has an important implication for understanding the internal correlation between the formation of carbonate cemented zones adjacent to top overpressured surface and geofluids expulsion out of overpressured system.

关键词： carbonate cemented zones formation mechanism stable carbon and oxygen isotopic top overpressured surface central Junggar Basin coal-bearing strata

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HK to Benefit from Imported LNG Project

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china Oil & Gas 2002年第3期9卷 53-54页

作者： Yao Jianjun(langfang branch of petroleum exploration and development research institute ) langfang branch of petroleum exploration and development research institute

Hong Kong is expected to buy one third of the mainland's US$ 10 billion worth of imported liquefied natural gas (LNG) to satisfy its growing energy demand, Mark Qiu, chief financial officer of CNOOC, said recently. He added Hong Kong will buy 1 million tons of LNG a year from the mainland's first LNG terminal in southern Guangdong Province to fuel the power plants and household consumption in the region.

关键词： LNG Project

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Identification of marine natural gases with different origin sources

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Science china Earth Sciences 2008年第S1期51卷 148-164页

作者： WANG YunPeng 1 ,ZHAO ChangYi 2 ,WANG ZhaoYun 2 ,WANG HongJun 2 ,TIAN Jin 1 ,ZOU YanRong 1 &LIU JinZhong1 1State Key Laboratory of Organic Geochemistry,Guangzhou institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,china 2institute of Geology,research institute of petroleum exploration and development,petrochina,Beijing 100083,china State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China institute of Geology Research Institute of Petroleum Exploration and Development PetroChina Beijing China

Kinetic experiments of gas generation for typical samples of marine gas precursors including low-maturity kerogen,residual kerogen and oil as well as dispersed liquid hydrocarbon(DLH)in source rocks were performed by closed system,and the evolution trends of molecular and isotopic compositions of natural gases from different precursors against the maturity(R0%)at laboratory conditions were *** diagrams of gas origin were calibrated by using the experimental data.A diagram based on the ratio of normal and isomerous butane and pentane(i/nC4-i/nC5)was proposed and used to identify the origins of the typical marine natural gases in the Sichuan Basin and the Tarim Basin, *** the maturities of natural gases were estimated by using the statistical relationships between the gaseous molecular carbon isotopic data and maturities(δ13C-R 0 %)with different *** results indicate that the molecular and isotopic compositions of simulated gases from different precursors are different from each *** example,the dryness index of the oil-cracking gas is the lowest;the dryness indices of gases from DLH and kerogen in closed system are almost the same;and the dryness index of gases from residual kerogen is extremely high,indicating that the kerogen gases are very dry;the contents of non-hydrocarbon gases in kerogen-cracking gases are far higher than those in oil-cracking and DLH-cracking *** molecular carbon isotopes of oil-cracking gases are the lightest,those of kerogen in closed system and GLH-cracking gases are the second lightest,and those of cracking gases from residual kerogen are the *** calibration results indicate that the diagrams of ln(C1/C2)-ln(C2/C3)andδ13C2-δ13C3-ln(C2/C3)can discriminate primary and secondary cracking gases,but cannot be used to identify gas origin sources,while the diagram of i/nC4-i/nC5 can differentiate the gases from different *** application results of these diagrams show that gas mixtures ext

关键词： marine organic matter gas origin sources kerogen oil-cracking gas origin identification carbon isotope

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An analysis of seismic attenuation in random porous media

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Science china(Physics,Mechanics & Astronomy) 2010年第4期53卷 628-637页

作者： LIU Jiong1, BA Jing2, MA JianWei1 & YANG HuiZhu1 1 institute of Seismic exploration, School of Aerospace, Tsinghua University, Beijing 100084, china 2 research institute of petroleum exploration & development, petrochina, Beijing 100083, china institute of Seismic exploration School of Aerospace Tsinghua University Beijing China research institute of petroleum exploration & development PetroChina Beijing China

The attenuation of seismic wave in rocks has been one of the interesting research topics, but till now no poroelasticity models can thoroughly explain the strong attenuation of wave in rocks. In this paper, a random porous medium model is designed to study the law of wave propagation in complex rocks based on the theory of Biot poroelasticity and the general theory of stochastic process. This model sets the density of grain, porosity, permeability and modulus of frame as random parameters in space, and only one fluid infiltrates in rocks for the sake of better simulation effect in line with real rocks in earth strata. Numerical simulations are implemented. Two different inverse quality factors of fast P-wave are obtained by different methods to assess attenuation through records of virtual detectors in wave field (One is amplitude decay method in time domain and the other is spectral ratio method in frequency domain). Comparing the attenuation results of random porous medium with those of homogeneous porous medium, we conclude that the attenuation of seismic wave of homogeneous porous medium is far weaker than that of random porous medium. In random porous media, the higher heterogeneous level is, the stronger the attenuation becomes, and when heterogeneity σ = 0.15 in simulation, the attenuation result is consistent with that by actual observation. Since the central frequency (50 Hz) of source in numerical simulation is in earthquake band, the numerical results prove that heterogeneous porous structure is one of the important factors causing strong attenuation in real stratum at intermediate and low frequency.

关键词： the theory of stochastic process the theory of Biot poroelasticity the attenuation of seismic wave inverse quality factor

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High-Resolution Transgressive-Regressive Sequence Stratigraphy of Chang 8 Member of Yanchang Formation in Southwestern Ordos Basin,Northern china

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Journal of Earth Science 2010年第4期21卷 423-438页

作者：吕明胜陈开远薛良清衣丽萍朱红涛 research institute of petroleum exploration & development PetroChina School of Energy Resources China University of Geosciences china National Oil and Gas exploration and development Corporation Faculty of Earth Resources China University of Geosciences

The reservoirs within the Chang 8 Member of Yanchang(延长) Formation in the southwestern Ordos basin are characterized by low *** is significant to build a high-resolution sequence stratigraphic framework for the exploration and development of these *** on an integrated investigation of well logs,seismic data,cores and outcrops,the Chang 8 Member is interpreted as a 3rd-order transgressive-regressive(T-R) sequence,which consists of six 4th-order T-R sequences,namely,K1,K2,K3,K4,K5 and K6,respectively,from base to *** 4th-order sequence comprises a transgressive systems tract overlain by a regressive systems *** K1 to transgressive systems tract of K4,it is characterized by the landward shifts of facies and overall retrogradational sequence stacking pattern due to accommodation increase more than sediment supply during the 3rd-order base-level *** distributary channels are mainly deposited in the transgressive systems tracts,and the interdistributary bays,sheet sands,and small-scale mouth bars are primarily developed in the regressive systems tracts in response to the 4th-order base-level *** the regressive systems tracts of K4 to K6,it is characterized by the basinward shifts of facies and overall progradational sequence stacking pattern because of accommodation increase less than sediment supply during a fall in 3rd-order base *** distributary channels are mainly accumulated in the transgressive systems tracts,and distributary channels and mouth bars are deposited in the regressive systems tracts as a result of the 4th-order base-level *** stratigraphic and sedimentological analyses indicate that sequences K1,K2,K5 and K6,as well as the basin edge of K3 and K4,remain potential for exploration and development due to their high reservoir quality in response to the low accommodation and more sediment supply.

关键词： transgressive-regressive sequence base level sediment supply sequence stratigraphic framework Ordos basin.

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Mn content of reservoir calcite cement: A novel inorganic geotracer of secondary petroleum migration in the tectonically complex Junggar Basin (NW china)

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Science china Earth Sciences 2007年第12期50卷 1796-1809页

作者： CAO Jian1,HU WenXuan1,YAO SuPing1,ZHANG YiJie2,WANG XuLong3,ZHANG YueQian3,TANG Yong3 & SHI XinPu3 1 State Key Laboratory for Mineral Deposit research,Department of Earth Sciences,Nanjing University,Nanjing 210093,china 2 research institute of exploration and development,petrochina,Beijing 100083,china 3 research institute of exploration and development,petrochina Xinjiang Oilfield Company,Karamay 834000,china State Key Laboratory for Mineral Deposit research Department of Earth Sciences Nanjing University Nanjing China research institute of exploration and development PetroChina Beijing China research institute of exploration and development PetroChina Xinjiang Oilfield Company Karamay China

Electronic probe microanalysis(EPMA) results of reservoir calcite cement from fourteen core samples in the Junggar Basin show that Mn-content varies largely between different samples from below the detect limitation to 4.14%,while it displays a generally good correlation with oil-gas ***,therefore,likely indicates that concentration of the Mn-content of the calcite cement has a close rela-tion to the intensity of petroleum fluid charging during hydrocarbon secondary *** order to assess this hypothesis,oxygen and strontium isotopic measurements on sixteen calcite veins host in source sequences were carried out to investigate the feature of the oil-source petroleum *** results imply that during hydrocarbon generation and migration,deep hot fluid has dissolved volcanic minerals interlined between mudstone source *** Mn is a kind of typical trace element enriched in volcanic rocks,it is reasonable to conclude that the petroleum fluid formed in the source sequences would be ***,calcite cements precipitated from such Mn-rich petroleum fluid would be Mn-rich *** to the geologic chromatographic effect during migration along reservoir rocks,the decreasing of the Mn-content of the reservoir calcite cements indicates the migration ***,this novel geotracer was further successfully applied in the study of hydrocarbon migration in the Junggar Basin in combination with organic geochemical analyses during the hydrocarbon *** Mn content of the reservoir calcite cement appears promising as a novel inorganic geotracer for the petroleum *** paper represents a search for novel indicators of secondary petroleum migration in tectonically complex basins based on fundamentals of the reservoir fluid-rock interactions.

关键词： petroleum migration, inorganic geochemistry, water-rock interaction, reservoir calcite cement, the Junggar Basin

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