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Characteristics of remaining oil viscosity in water-and polymer-flooding reservoirs in daqing oilfield

Science china Earth Sciences 2010年第12期53卷 72-83页

作者： XU ZhengShun,ZHANG JuHe,FENG ZiHui,FANG Wei & WANG FengLan exploration and development research {3.,daqing oilfield Company Ltd.,daqing 163712.china exploration and development research {3. Daqing Oilfield Company Ltd. Daqing China

The experimental analysis of 21 crude oil samples shows a good correlation between high molecular-weight hydrocarbon components (C 40+) and ***-four remaining oil samples extracted from oil sands of oilfield development coring wells were analyzed by high-temperature gas chromatography (HTGC),for the relative abundance of C 21-,C 21-C 40 and C 40+ *** relationship between viscosity of crude oil and C 40+ (%) hydrocarbons abundance is used to expect the viscosity of remaining *** mobility characteristics of remaining oil,the properties of remaining oil,and the next displacement methods in reservoirs either water-flooded or polymer-flooded are studied with rock permeability,oil saturation of coring wells,*** experimental results show that the hydrocarbons composition,viscosity,and mobility of remaining oil from both polymer-flooding and water-flooding reservoirs are heterogeneous,especially the *** abundance of C 21- and C 21-C 40 hydrocarbons in polymer-flooding reservoirs is lower than that of water-flooding,but with more abundance of C 40+ *** is then suggested that polymer flooding must have driven more C 40- hydrocarbons out of reservoir,which resulted in relatively enriched C 40+,more viscous oils,and poorer *** oil in water-flooding reservoirs is dominated by moderate viscosity oil with some low viscosity oil,while polymer-flooding mainly contained moderate viscosity oil with some high viscosity *** each oilfield and reservoir,displacement methods of remaining oil,viscosity,and concentration by polymer-solution can be adjusted by current viscosity of remaining oil and mobility ratio in a favorable range.A new basis and methods are suggested for the further development and enhanced oil recovery of remaining oil.

关键词： remaining oil viscosity mobility ratio water-flooding polymer-flooding heterogeneity polymer-solution viscosity

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Seismic wave propagating in Kelvin-Voigt homogeneous visco-elastic media

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Science china Earth Sciences 2006年第2期49卷 147-153页

作者： YUAN Chunfang1, PENG Suping1, ZHANG Zhongjie2 & LIU Zhenkuan3.1. china University of Mining & Technology, Beijing 100083. china 2. institute of Geophysics, Chinese Academy of Sciences, Beijing 100101, china 3. exploration and development research institute of daqing oilfield, daqing 163712. china china University of Mining & Technology Beijing China institute of Geophysics Chinese Academy of Sciences Beijing China exploration and development research {3. of daqing oilfield Daqing China

This paper studies, under a small disturbance, the responses of seismic transient wave in the visco-elastic media and the analytic solution of the corresponding third-order partial differential equation. A plane wave solution of Kelvin-Voigt homogeneous visco-elastic third-order partial differ-ential equation with a pulse source is obtained. By the principle of pulse stacking of particle vibration, the result is extended to the solution of Kelvin-Voigt homogeneous visco-elastic third-order partial differential equation with any source. The velocities of seismic wave propagating and the attenuation of seismic wave in Kelvin-Voigt homogeneous visco-elastic media are discussed. The velocities of seismic wave propagating and the coefficient of attenuation of seismic wave in Kelvin-Voigt homogeneous visco-elastic media are derived, expressed as functions of density of the media, elastic modulus and visco-elastic coefficient. These results can be applied in inversing lithology parameters in geophysical prospecting.

关键词： Kelvin-Voigt visco-elastic velocity attenuation seismic wave.

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Discovery of a Late Permian Angara-Cathaysia mixed flora from Acheng of Heilongjiang,china,with discussions on the closure of the Paleoasian Ocean

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Science china Earth Sciences 2009年第12期52卷 1746-1755页

作者： DENG ShengHui1,2, WAN ChuanBiao3.& YANG JianGuo3.1 research institute of Petroleum exploration and {3., Petrochina, Beijing 100083. china 2 State Key Laboratory of Enhanced Oil Recovery, Beijing 100083.china 3.daqing institute of Petroleum exploration and {3., Petrochina, daqing 164712, china research institute of Petroleum exploration and {3. PetroChina Beijing China State Key Laboratory of Enhanced Oil Recovery Beijing China daqing institute of Petroleum exploration and {3. PetroChina Daqing China

This work documents a new flora from the Upper Permian Hongshan Formation of Acheng County, Heilongjiang Province, Northwest china. The flora consists of 20 species: Paracalamites sp., Pecopteris tangwangheensis Huang, Callipteris obese Huang, Callipteris shenshuensis Huang, C. tangwangheensis Huang, C. heilongjiangensis Huang, C. zeilleri Zalessky, C. sp., Comia yichunensis Huang, C. tenueaxis Huang, Iniopteris sibirica Zalessky, Supaia teiliensis Huang, Compsopteris tchirkovae Zalessky, C. cf. adzvensis Zalessky, Nilssonia sp. 1, Nil. sp. 2, Taeniopteris cf. densissima Halle, T. cf. nystraemii Halle, T. sp. and Noeggerathiopsis derzavinii Neub. It is dominated by Angara species but mixed with some typical Cathaysian elements. The age of the flora is assigned to late of the Late Permian according to the stratigraphic ranges of the known species and the comparisons of it with the similar floras. The new discovery indicates that the final collision between the North china Plate and Siberian Plate occurred in Late Permian along the Xar Moron River-Changchun-Yanji sutured zone, and the Paleoasian Ocean was finally closed at the end of the Permian.

关键词： Late Permian mixed Angara-Cathaysia flora Paleoasian Ocean plate collision Heilongjiang Province of china

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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 {3.,Petrochina,Beijing 100083.china 2 Geological Logging Subcompany of daqing Oil Field Company Ltd.,daqing 163.11,china 3.research institute of Petroleum exploration and {3. of daqing Oil field Company Ltd.,daqing 163.3.,china research institute of Petroleum exploration and {3. PetroChina Beijing China Geological Logging Subcompany of daqing Oil Field Company Ltd. Daqing China research institute of Petroleum exploration and {3. of daqing Oil field Company Ltd. Daqing China

According to stastistic of present geotemperatures at the depths of 1000,2000,3.00 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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A　STUDY　OF　THE　VARIATION　OF　TOTALLIQUID　PRODUCTION　OF　AN　OIL　FIELD　IN　ITS　LATER　HIGH　WATER　CUT　STAGE

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石油勘探与开发 1994年第1期 116-122页

作者： Zhou Xuemin Ren Yulin Wang Zheqin (research institute of exploration and {3., daqing Petroleum Administration,daqing City, Heilonjiang 163712. P. R. china)

Ａ　ＳＴＵＤＹ　ＯＦ　ＴＨＥ　ＶＡＲＩＡＴＩＯＮ　ＯＦ　ＴＯＴＡＬＬＩＱＵＩＤ　ＰＲＯＤＵＣＴＩＯＮ　ＯＦ　ＡＮ　ＯＩＬ　ＦＩＥＬＤ　ＩＮ　ＩＴＳ　ＬＡＴＥＲ　ＨＩＧＨ　ＷＡＴＥＲ　ＣＵＴ　ＳＴＡＧＥＡＳＴＵＤＹＯＦ... 详细信息

Ａ　ＳＴＵＤＹ　ＯＦ　ＴＨＥ　ＶＡＲＩＡＴＩＯＮ　ＯＦ　ＴＯＴＡＬＬＩＱＵＩＤ　ＰＲＯＤＵＣＴＩＯＮ　ＯＦ　ＡＮ　ＯＩＬ　ＦＩＥＬＤ　ＩＮ　ＩＴＳ　ＬＡＴＥＲ　ＨＩＧＨ　ＷＡＴＥＲ　ＣＵＴ　ＳＴＡＧＥＡＳＴＵＤＹＯＦＴＨＥＶＡＲＩＡＴＩＯＮＯＦＴＯＴ...

关键词： ITS LATER FIELD HIGH OIL WATER AN CUT

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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,Beijing 102249,china 2 State Key Laboratory of Petroleum Resource and Prospecting,china University of Petroleum,Beijing 102249,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 Basin and Reservoir research Center China University of Petroleum Beijing China State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing China research institute of exploration and {3. Daqing Oilfield Company Ltd Daqing China Petroleum exploration and Production institute of SINOPEC Beijing 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 (86.3.×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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Timing and history of marine hydrocarbon accumulation in Tarim craton

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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 {3. 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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Detection of water in petroleum inclusions and its implications

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Science Bulletin 2006年第12期51卷 1501-1507页

作者： CAO Jian1, YAO Suping1, HU Wenxuan1, ZHANG Yijie2, WANG Xulong3. ZHANG Yueqian3.& TANG Yong3.1. State Key Laboratory for Mineral Deposit research, Department of Earth Sciences, Nanjing University, Nanjing 210093. china 2. research {3. of exploration and development, Petrochina, Bei- jing 100083. china 3. research {3. of exploration and development, Xinjiang oilfield Company, Petrochina, Karamay 83.000, china State Key Laboratory for Mineral Deposit research Department of Earth Sciences Nanjing University Nanjing China research institute of exploration and {3. PetroChina Beijing China research institute of exploration and {3. Xinjiang Oilfield Company PetroChina Karamay China

FTIR spectra of inclusions sampled from fault-zone reservoirs of the northwestern Junggar Basin show that water, with different abundances, does exist in petroleum inclusions. It is thus implied that petroleum inclusions can seldom form without water. Different inclusions hosted in one single grain, and formed in one oil charging phase, have a largely varied ratio of water to oil and slightly changed CH3.CH2 ratio. This likely provides evidence for fault-related episodic migration and accumulation of hydrocarbons.

关键词： water in petroleum inclusions forming mechanism of inclusions episodic migration and accumulation of hydrocarbons FTIR microspectroscopy Junggar 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 {3. of exploration and development,Petrochina,Beijing 100083.china 3.research {3. of exploration and development,Petrochina Xinjiang {13. Company,Karamay 83.000,china State Key Laboratory for Mineral Deposit research Department of Earth Sciences Nanjing University Nanjing China research institute of exploration and {3. PetroChina Beijing China research institute of exploration and {3. 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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中国东北地区CO_2气藏成因及聚集规律分析

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石油学报 2003年第6期24卷 13-17,23页

作者：张晓东大庆油田有限责任公司勘探开发研究院黑龙江大庆163712

对东北地区区域构造进行了研究,分析了对该区有控制作用的各个深而大的断裂的特征,进而研究了各构造地质单元的演化规律、岩浆作用及其对盆地形成、演化的控制作用.在此基础上,阐述了CO2气的形成环境.CO2的碳同位素资料、3.e 4He比值及... 详细信息

对东北地区区域构造进行了研究,分析了对该区有控制作用的各个深而大的断裂的特征,进而研究了各构造地质单元的演化规律、岩浆作用及其对盆地形成、演化的控制作用.在此基础上,阐述了CO2气的形成环境.CO2的碳同位素资料、3.e 4He比值及甲烷、乙烷、丙烷同位素的倒序证明了该区的气藏属于无机幔源气.基于CO2与深大断裂和岩浆岩、火山岩的关系,论述了盆地中CO2的成因机制和分布范围以及CO2气藏的类型、聚集规律、流体性质等.

关键词：区域构造断裂带二氧化碳气藏成因聚集规律碳同位素中国东北地区油气勘探

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