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Control of neotectonic movement on hydrocarbon accumulation in the Kuqa Foreland Basin,west china

Petroleum Science 2010年第1期7卷 49-58页

作者： Jiang Zhenxue Li Lianxia Song Yan Tian Fenghua Zhao Mengjun Wang Haijiang Zhao Zhenxing State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum Beijing 102249 China Basin and Reservoir research Center China University of Petroleum Beijing 102249 China exploration and development {2. institute PetroChina Beijing 100083 China Department of exploration ＆ development PetroChina CBM Limited Company Beijing 100013 China exploration Department Tarim Oilfield Company PetroChina Kuerle Xinjiang 841000 China No.8 Oil Production Plant Changqing Oilfield Company PetroChina Xi＇an Shaanxi 710018 China

Neotectonic movement refers to the tectonic movement that has happened since the Cenozoic, which is the latest movement. It has the most important influence on the basins in west china, especially on the hydrocarbon accumulation in the western foreland basins. We determined the time of neotectonic movement in the Kuqa Foreland Basin, which began from the Neogene, and analyzed the patterns of movement, which were continuous and fast subsidence in the vertical direction and intense lateral compression. The structure styles are that the faulting is weakened and the folding is strengthened gradually from north to south. We studied the control of neotectonic movement on the hydrocarbon accumulation process and model in the Kuqa Foreland Basin with basin simulation technique. The largest subsidence rate of the Kuqa Foreland Basin reached 1,2.0 m/Ma during the neotectonic movement, leading to rapid maturing of source rock within 5 Ma and a large quantity of hydrocarbon being generated and expelled. The thick neotectonic strata can form high quality reservoirs with the proved gas and oil reserves accounting for 5% and 2.% of the total reserves, respectively. 86% of the structural traps were formed in the neotectonic movement period. The faults formed during the neotectonic movement serve as important migration pathways and they exist in the region where the hydrocarbon reservoirs are distributed. Abnormally high pressure caused by the intense lateral compression, thick neotectonic strata deposition and rapid hydrocarbon generation provide driving force for hydrocarbon migration. The accumulation elements match each other well over a short period, leading to many large gas fields formed later in the Kuqa Foreland Basin.

关键词： Kuqa Foreland Basin neotectonic movement accumulation element accumulation process accumulation model

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Quantitative studies of hydrocarbon loss of the Silurian bitumen sandstone in the Tarim Basin

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Science china Earth Sciences 2008年第S2期51卷 101-107页

作者： JIANG ZhenXue1,2.PANG XiongQi1,2.LIU LuoFu1,2.WANG XianDong3,ZHANG Jun4 & LI HongYi1,2.1 Basin and Reservoir research Center,china University of Petroleum,{2. 102.49,china 2.State Key Laboratory of Petroleum Resource and Prospecting,china University of Petroleum,{2. 102.49,china 3 research institute of exploration and development,Daqing Oilfield Company Ltd,Daqing 163712.china 4 Petroleum exploration and Production institute of SINOPEC,beijing 100083,china china Univ Petr Basin & Reservoir Res Ctr Beijing 102249 Peoples R China china Univ Petr State Key Lab Petr Resource & Prospecting Beijing 102249 Peoples R China Daqing Oilfield Co Ltd Res Inst Explorat & Dev Daqing 163712 Peoples R China SINOPEC Petr Explorat & Prod Inst Beijing 100083 Peoples R China

The evolution of Tarim Basin experienced several tectonic movements,of which Caledonian movement caused a serious damage to reservoirs of Silurian. The earlier reservoirs size and the later hydrocarbon loss are two key factors to exploration prospect of Silurian. On the basis of net thickness of bituminous sandstone and recovery coefficient of crude oil converting to bitumen,the scale of the hydrocarbon loss of palaeo-accumulation in bitumen sandstone of Silurian was calculated (86.30×108t). The deter-mination of net thickness of bitumen sandstone was completed mainly by several methods,such as physical property demarcation,observing lithology,grains with oil inclusion (GOI) technology,and quantitative grains fluorescence (QGF) technology. The samples of black sandstone and white sand-stone were collected and compared by means of the methods mentioned above. The results showed that there was little hydrocarbon,or none,in the white sandstone. The recovery coefficient was ob-tained by the analyses of plentiful physical parameters of crude oil and bitumen sandstone,based on the hypothesis that nonhydrocarbon compounds and bitumen were invariable in the process of bitu-men forming. The calculated result,which is more scientific and actual,indicates the exploration pros-pect is more promising in Silurian of the Tarim Basin.

关键词： Tarim Basin Silurian bitumen sandstone hydrocarbon loss quantitative research recovery coefficient

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Stratigraphic thermohistory and its implications for regional geoevolution in the Tarim Basin,NW china

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Science china Earth Sciences 2010年第10期53卷 1495-1505页

作者： WANG TieGuan1,DAI ShiFeng2.LI MeiJun1,ZHANG WeiBiao1,3,Qiu NanSheng1 & WANG GuangLi1 1 State Key Laboratory of Petroleum Resources and Prospecting,china University of Petroleum,beijing 102.49,china 2.State Key Laboratory of Coal Resources & Safe Mining,china University of Mining & Technology,beijing 100083,china 3 exploration research Center,exploration & development institute,china Petrochemical Corporation,beijing 100083,china 1. State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum Beijing 102249 China2. State Key Laboratory of Coal Resources & Safe Mining China University of Mining & Technology Beijing 100083 China3. Exploration Research Center Exploration & Development Institute China Petrochemical Corporation Beijing 100083 China

Fourteen vitrinite reflectance profiles from the Tarim Basin,NW china,show that the vitrinite reflectance profiles of individual wells follow a faulted and dislocated dual-stage pattern in the eastern section of the Tazhong Uplift and in the Tabei *** reflectance values in these profiles change sharply at the unconformity beneath the Lower Carboniferous Bachu or Upper Devonian Donghetang Formations,where the overlying Triassic to Carboniferous strata are still in a mature phase within the "liquid oil window".However,the underlying Lower Paleozoic reached the overmature phase beyond the "liquid oil window" towards the end of the Silurian,or in the Early Devonian at the *** the vitrinite reflectance profiles are attributed to a continuous,single-stage pattern in the western section of the Tazhong Uplift,in which the Lower Paleozoic is also in an overmature phase,their overmaturity would have been achieved relatively late in geological *** stratigraphic thermohistory has the following implications to regional geoevolution:(1) The overmature Lower Ordovician to Cambrian strata in the eastern section of the Tazhong Uplift and in the Tabei Uplift,as well as in the Manjiaer Depression,could not have acted as the source kitchen for normal oil(so-called black oil);(2. The dissimilarity in vitrinite reflectance profiles between the eastern and western sections of the Tazhong Uplift reveals Early Paleozoic paleotectonic features,i.e.,lower at the east and higher at the west,whereas recent tectonic features formed since the Late Paleozoic are in reverse,i.e.,higher in the east and lower at the west;(3) Reconstruction of the denuded thickness of sediments overlying the Lower Ordovician strata suggests reconsideration on the paleotectonic features in the Tarim Basin;(4) Based on the sustained duration of the "liquid oil window" for overmature source beds,it is predicted that the Suntuoguole Lower Uplift between the Awati and Manjiaer Depressions is a

关键词： vitrinite reflectance profile faulted and dislocated dual-stage pattern paleotectonic features sustained "liquid oil window" period source kitchen

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Deliverability of wells in carbonate gas condensate reservoirs and the capillary number effect

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Petroleum Science 2009年第1期6卷 51-56页

作者： Li Yong Hu Yongle Li Baozhu Xia Jing research institute of Petroleum {2. and development PetroChina Beijing 100083 China

With the development of the Tazhong No. 1 carbonate gas condensate reservoir in china, it has become more and more important to study the characteristics of gas condensate well deliverability. A single-well radial simulator for dual-permeability reservoirs was established to study the influences of fluid properties, permeability, and pressure drawdown on well deliverability with and without the capillary number effect. The simulation shows that well deliverability basically maintains its initial value and is not affected by the capillary number when the formation pressure is higher than dew-point pressure. However, well deliverability drops rapidly when the formation pressure is lower than dew-point pressure. Even if the condensate dropout is very low, well deliverability without the capillary number effect reduces to 50 percent of its initial value when reservoir pressure declines to 95 percent of dew-point pressure, but well deliverability is significantly improved if the capillary number effect exists. The capillary number effect is most significant when reservoir pressure is just lower than dew point pressure, then the effect decreases; the reduction of well deliverability is mainly caused by the reduction of gas relative permeability of the matrix system near the wellbore.

关键词： Carbonate reservoir gas condensate capillary number effect well deliverability dualporosity media

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Carbon and hydrogen isotopic characteristics of natural gases from the Luliang and Baoshan basins in Yunnan Province, china

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Science china Earth Sciences 2006年第9期49卷 938-946页

作者： XU Yongchang1, LIU Wenhui2. SHEN Ping1, WANG Wanchun1, WANG Xiaofeng1, Tenger1, YAN Yaomin3 & LIU Ruobin3 1. Lanzhou Center of Oil & Gas Resources, institute of Geology and Geophsics, Chinese Academy of Sciences, Lanzhou 730000, china 2. {2. institute of Petroleum exploration and Production, SINOPEC, beijing 100083, china 3. South Branch of Petroleum exploration and Production Company, SINOPEC, Kuming 650000, china 1. Lanzhou Center of Oil & Gas Resources Institute of Geology and Geophsics Chinese Academy of Sciences Lanzhou 730000 China 2. research institute of Petroleum {2. and Production SINOPEC Beijing 100083 China 3. South Branch of Petroleum exploration and Production Company SINOPEC Kuming 650000 China

The Luliang and Baoshan basins of Yunnan Province are two small-sizedcontinental oil/gas-bearing sedimentary basins, which were developed at the bases of theCarboniferous and Devonian systems during the Late Tertiary, covering an area of 32. km^2.and 2.4km^2. respectively. Since the 1990s, there have been discovered small-sized natural gas pools inthese two basins. The natural gases are composed mainly of hydrocarbon gases, with nonhydrocarbonsaccounting for less than 2.. Of the hydrocarbon gases, methane accounts for more than 99%, and thecomponents above C_2.account for less than 0.2.. On the basis of previous studies of geologicalbackground, the composition of natural gases and their carbon isotopic composition, it has beendefined that these two gas pools are of bacterial origin. In this work we have comprehensivelymeasured the carbon and hydrogen isotopic composition of natural gases from these two basins andhave gone into the details of the mechanism of gas generation. The δ^(13)C_1 values of naturalgases from the Luliang Basin are within the range of -72.1 per thousand - -73.3 per thousand, andthe δD_(CH_4) values, -2.2.per thousand - -2.4 per thousand, indicating that the bacterial gasgeneration is dominated by the way of CO_2.reduction. It has been evidenced that undercontinental-facies fresh water conditions there did occur the CO_2.reduction as a process ofbacterial gas generation. The δ^(13)C_1 values of natural gases from the Baoshan Basin are withinthe range of - 62.5 per thousand - -63.5 per thousand, and the δD_(CH_4) values, -2.2.per thousand- -2.0 per thousand. These isotopic characteristics are fallen into transitional phase of acetatefermentation and CO_2.reduction as defined by Whiticar et al. (1986). An important discovery in theLuliang Basin is the carbon isotopic composition of ethane of purely biogenetic origin, i.e., itsδ^(13)C_2.values are within the range of - 61.2.per thousand - - 66.0 per thousand. These carbonisotopic values have been r

关键词： bacterial gas, carbon and hydrogen isotope, CO2 reduction, acetate fermentation.

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EARLY PALAEOZOIC PRIMARY OIL OF KONGXI BURIED HILL IN HUANGHUA DEPRESSION, HUABEI, china

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石油勘探与开发 1997年第3期24卷 92-95页

作者： Wang Zhaoyun Cheng Keming(research institute of Petroleum {2. and development, CNPC, beijing, 100083)Yang Chiyin(Geology and development institute, Dagang Oil Field Group Ltd., Tianjin, 3002.0)

Huabei area suffered a sedimentary interruption of about 130 million years during Late Ordovicianto Devonian period. Therefore, whether the Early Palaeozoic carbonate rocks with a stable distribution and alarge thickness can secondarily generate hydrocarbon and form Primary oil and gas Pool is an important issueregarding the prospecting for Primary oil and gas Pools in the Lower Palaeozoic formations. Well Konggu 3,located in the northwestern Kongdian anticlinal structural belt, produced oil from the Primary Ordovician limestoneoil pool reserved in the Ordovician Fengfpog Formation. The crude oil Characteristics and oil-source correlationshow that oil source rock are Ordovician limestone. So it is a primary oil pool with source and reservoir rads inthe same formation. The studies on the secondsry hydrocarbon generation of source rocks and the primary oil ofWell Konggu 3 have a great significance to firmly prospect for Lower Palaeozoic primary oil and gas pools inHuabei area.

关键词： Subject heading Early Palaeozoic Primary reservoir Oil-source correlation Huanghua depression Huabei area

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Preliminary study on the origin identification of natural gas by the parameters of light hydrocarbon

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Science china Earth Sciences 2008年第S1期51卷 131-139页

作者： HU GuoYi 1,2.3 ,LI Jian 1,2.,LI Jin 1,2.,LI ZhiSheng 1,2.,LUO Xia 1,2.,SUN QingWu 1,2.&MA ChengHua 1,2.1 research institute of Petroleum {2. and development(Langfang Branch),petrochina,Langfang 065007,china 2.The Key Laboratory of Gas Formation and development,petrochina,Langfang 065007,china 3 College of Geo-Resources and Information,china University of Petroleum,beijing 102.00,china petrochina Res Inst Petr Explorat & Dev Langfang Branch Langfang 065007 Peoples R China petrochina Key Lab Gas Format & Dev Langfang 065007 Peoples R China china Univ Petr Coll Georesources & Informat Beijing 102200 Peoples R China

The light hydrocarbon composition of 2.9 natural gas samples and individual light hydrocarbon carbon isotopes of 53 natural gas samples from typical humic-sourced gas and sapropelic-sourced gas in the four basins of china have been determined and *** identification parameters for humic-sourced gas and sapropelic-sourced gas are proposed or *** differences of compound-specificδ13C value of individual light hydrocarbon between humic-sourced gas and sapropelic-sourced gas have been *** humic-sourced gas has the distribution ofδ13C benzene > -2.‰,δ13C toluene >-2.‰,δ13C cyclohexane >-2.‰andδ13C methyl cyclohexane >-2.‰,while the sapropelicsourced gas has the distribution ofδ13C benzene 2.‰,δ13C toluene 2.‰,δ13C cyclohexane 2.‰and δ13C methyl cyclohexane 2.‰.Among the components of C7 light hydrocarbon compound,such as normal heptane(nC7),methyl cyclohexane(MCH)and dimethyl cyclopentane(ΣDMCP),etc,relative contents of nC7 and MCH are influenced mainly by the source organic matter type of natural ***,it is suggested that the gas with relative content of nC7 of more than 30%and relative content of MCH of less than 70%is sapropelic-sourced gas,while gas with relative content of nC7 of less than 35%and relative content of MCH of more than 50%is humic-sourced *** components of C5-7 aliphatics, the gas with relative content of C5-7 normal alkane of more than 30%is sapropelic-sourced gas,while the gas with relative content of C5-7 normal alkane of less than 30%is humic-sourced *** paremeters have been suggested to identify humic-sourced gas and sapropelic-sourced gas.

关键词： natural gas humic-sourced gas sapropelic-sourced gas carbon isotope light hydrocarbon parameters

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Application of C5-C13 light hydrocarbons in depositional environment diagnosis

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Progress in Natural Science:Materials International 2008年第9期18卷 1129-1137页

作者： Peirong Wanga,b,, Guanjun Xu a,c, Tingrong Xiaoc, Dajiang Zhanga,c, Bin Zhanga,c a Key Laboratory of Petroleum Geochemistry, china National Petroleum Corporation, beijing 100083, china b Department of Organic Geochemistry, Yangtze University, Jingzhou 43402., china c Central Laboratory of Petroleum Geology, research institute of Petroleum exploration and development, petrochina, beijing 100083, china Key Laboratory of Petroleum Geochemistry China National Petroleum Corporation Beijing 100083 China Department of Organic Geochemistry Yangtze University Jingzhou 434023 China Central Laboratory of Petroleum Geology Research Institute of Petroleum Exploration and Development PetroChina Beijing 100083 China

Based on the geological background and Gammacerane/C31H(S + R) ratios, source rock depositional environments of the studied oil samples (194) from 13 oilfields were classified into three groups according to salinity:saline-lacustrine facies, fresh to brackish lacustrine facies (including limnetic facies), and semi-saline to saline facies (including marine facies of the Tarim Basin).C5-C13 compound groups in the crude oils were separated by GC, and about 2.6 compounds were qualitatively *** geochemical application of the C6-C13 compound groups and their ratios between each group with individual carbon number was *** studies show that (1) C6-C13 compound groups and their ratios in the crude oils could serve as new reliable parameters for oil-oil correlation because the C6-C13 light fractions are the major oil component, especially in light oil or condensate, in which they account for almost 90% of the whole oil;(2. the compound groups of C7 light hydrocarbons in oils derived from difierent depositional environments with difierent salinity have difierent characteristics;(3) C6-C13 compound groups and ratios may be afiected by other factors such as maturity, but they are mainly controlled by salinity of depositional waters.

关键词： Light hydrocarbons Crude oil Depositional environment Salinity

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PETROLIFEROUS　PROVINCE　AND　RESOURCE　POTENTIAL　OF　THE　NORTHEAST　ASIA　THE　MOST　PROSPECTIVE　NEW──THE　MOST　PROSPECTIVE　NEW　PROVINCE　IN　ASIA

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石油勘探与开发 1994年第2期 110-118页

作者： Hu Jian-yi Xu Shu-bao Don Li-rong(research institute of Petroleum {2. and development, CNPC.beijing, china, 100083)

ＰＥＴＲＯＬＩＦＥＲＯＵＳＰＲＯＶＩＮＣＥＡＮＤＲＥＳＯＵＲＣＥＰＯＴＥＮＴＩＡＬＯＦＴＨＥＮＯＲＴＨＥＡＳＴＡＳＩＡＴＨＥＭＯＳＴＰＲＯＳＰＥＣＴＩＶＥＮＥＷ──ＴＨＥＭＯＳＴＰＲＯＳＰＥＣＴＩＶＥＮＥＷＰＲＯＶＩ... 详细信息

ＰＥＴＲＯＬＩＦＥＲＯＵＳＰＲＯＶＩＮＣＥＡＮＤＲＥＳＯＵＲＣＥＰＯＴＥＮＴＩＡＬＯＦＴＨＥＮＯＲＴＨＥＡＳＴＡＳＩＡＴＨＥＭＯＳＴＰＲＯＳＰＥＣＴＩＶＥＮＥＷ──ＴＨＥＭＯＳＴＰＲＯＳＰＥＣＴＩＶＥＮＥＷＰＲＯＶＩＮＣＥＩＮＡＳＩＡＨｕＪｉａｎ－ｙ...

关键词： petroliferous basin folded belt (Northeast Asia) (Siberian Plate) (Sino-Korean Plate)

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Geochemical characteristics and source rock of Ordovician gas reservoir, Changqing Gasfield

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Chinese Science Bulletin 1999年第20期44卷 1917-1920页

作者： XIA Xinyu, ZHAO Lin, ZHANG Wenzheng and LI Jianfengresearch institute of Petroleum {2. and development, beijing 100083, china Changqing Petroleum {2. Bureau, XL an 71002. , china research institute of Petroleum {2. and development Beijing China Changqing Petroleum exploration Bureau Xi’an China

Carbon isotopic composition of methane in Ordovician gas reservoir in the Changqing Gasfield can reflect the dominance of Upper Paleozoic coal-type gas despite its high mature degree. The 12.-rich ethane in the Ordovician reservoir (δ13C2.2.‰), known as a marker as oil-type gas, does not indicate the Ordovician marine carbonate as main source rock, it is be-

关键词： methane ethane carbon isotope natural gas genesis. Changqing Gasfield.

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