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Kinetics of hydrocarbon generation for Well Yingnan 2.gas reservoir,tarim Basin,china

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Science china Earth Sciences 2008年第S1期51卷 107-114页

作者： XIAO ZhongYao 1,2.,XIAO XianMing 3 ,MA DeMing 4 ,LU YuHong 2.&YANG ChaoShi 2.1 china University of Mining&Technology,Beijing 100083,china 2.{2. Institutes of exploration and development,tarim oilfield company,Petrochina,Korla 841000,china 3 Guangzhou Institutes of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,china 4 Department of Synthetic Physical-Chemical Prospecting,BGP,Zhuozhou 072.56,china china Univ Min & Technol Beijing 100083 Peoples R China Petrochina Tarim Oilfield Co Res Inst Explorat & Dev Korla 841000 Peoples R China Chinese Acad Sci Guangzhou Inst Geochem Guangzhou 510640 Peoples R China BGP Dept Synthet Phys Chem Prospecting Zhuozhou 072656 Peoples R China

Well Yingnan 2.an important exploratory well in the east of tarim Basin,yields high commercial oil and gas flow in *** gas components and carbon isotopic composition indicate that it belongs to sapropel type *** this region presents many suits of hydrocarbon source rocks,there are some controversies that natural gases were generated from kerogen gas or crude oil cracking gas at *** using the kinetics of hydrocarbon generation and carbon isotope,natural gas of Well Yingnan 2.is composed mainly of crude oil cracking gas,about 72.,it is generated from secondary kerogen gas of Cambrian-Lower Ordovician source rock and crude oil cracking gas of Mid-Upper Ordovician oil *** main oil and gas filling time is 65 Ma later in the Jurassic gas reservoir of Well Yingnan 2.so the gas reservoir belongs to late accumulation and continuous filling type.

关键词： kinetic migration and accumulation process crude oil cracking gas Well Yingnan 2 tarim Basin

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 1. china University of Mining & Technology Beijing 100083 China 2. Institute of Geophysics Chinese Academy of Sciences Beijing 100101 China 3. exploration and development {2. Institute of Daqing oilfield Daqing 163712 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.

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 2.0093,china 2.research Institute of exploration and development,Petrochina,Beijing 100083,china 3 research Institute of exploration and development,Petrochina Xinjiang oilfield {12.,Karamay 834000,china 1. State Key Laboratory for Mineral Deposit research Department of Earth Sciences Nanjing University Nanjing 210093 China 2. research Institute of exploration and {2. PetroChina Beijing 100083 China 3. research Institute of exploration and {2. PetroChina Xinjiang Oilfield Company Karamay 834000 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

Geochemical characteristics and origin of gases from the Upper,Lower Paleozoic and the Mesozoic reservoirs in the Ordos Basin,china

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Science china Earth Sciences 2008年第S1期51卷 183-194页

作者： HU AnPing 1 ,Li Jian 2.,ZHANG WenZheng 3 ,LI ZhiSheng 2.,HOU Lu 4 &LIU QuanYou 5 1 Department of Earth Sciences,Zhejiang University,Hangzhou 31002.,china 2.Langfang Branch,Reasearch Institute of Petroleum exploration and {2.,Petrochina,Langfang 065007,china 3 Institute of exploration and {2.,Petrochina Changqing oilfield company,Xi’an 71002.,china 4 University of Petroleum,Beijing102.49,china 5 Petrochina research Institute of Petroleum exploration and {2.,Beijing 100083,china 1. Department of Earth Sciences Zhejiang University Hangzhou 310027 China2. Langfang Branch Reasearch Institute of Petroleum Exploration and Development PetroChina Langfang 065007 China3. Institute of Exploration and Development PetroChina Changqing Oilfield Company Xi’an 710021 China4. University of Petroleum Beijing 102249 China5. PetroChina Research Institute of Petroleum Exploration and Development Beijing 100083 China

The Ordos Basin,the second largest sedimentary basin in china,contains the broad distribution of natural gas *** far,several giant gas fields have been discovered in the Upper and Lower Paleozoic in this basin,each having over 1000×10 8 m 3 of proven gas reserves,and several gas pools have also been discovered in the *** paper collected the data of natural gases and elucidated the geochemical characteristics of gases from different reservoirs,and then discussed their *** hydrocarbons preserved in the Upper Paleozoic,the elevatedδ13C values of methane,ethane and propane indicate that the gases would be mainly coal-formed gases;the singular reversal in the stable carbon isotopes of gaseous alkanes suggests the mixed gases from humic sources with different *** the Lower Paleozoic,theδ13C 1 values are mostly similar with those in the Upper Paleozoic,but theδ13C 2.andδ13C 3 values are slightly lighter,suggesting that the gases would be mixing of coal-type gases as a main member and oil-type *** are multiple reversals in carbon isotopes for gaseous alkanes,especially abnormal reversal for methane and ethane(i.e.δ13C 1 >δ13C 2.),inferring that gases would be mixed between high-mature coal-formed gases and oil-type *** the Mesozoic,the δ13Cvalues for gaseous alkanes are enriched in 12.,indicating that the gases are mainly derived from sapropelic sources;the carbon isotopic reversal for propane and butane in the Mesozoic is caused by microbial oxidation and mixing of gases from sapropelic sources with different *** contrast to the Upper Paleozoic gases,the Mesozoic gases are characterized by heavier carbon isotopes of iso-butane than normal butane,which may be caused by gases generated from different kerogen types. Finally,according toδ13C 1 -Ro relationship and extremely low total organic carbon contents,the Low Paleozoic gases would not be generated from the Ordovician source as a main gas source,bycontrast, the Upper Pale

关键词： Ordos Basin natural gas chemical composition carbon isotope genesis

Complex petroleum accumulating process and accumulation series in the buried-hill trend in the rift basin:An example of Xinglongtai structure trend,Liaohe subbasin

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Science china Earth Sciences 2008年第S2期51卷 108-116页

作者： GAO XianZhi1,PANG XiongQi1,LI XiaoGuang2.CHEN ZhenYan2.SHAN JunFeng2.LIU Feng1,ZOU ZhiWen1 & Li WeiLian1 1 Faculty of Resources and Information Technology,china University of Petroleum,Beijing 102.49,china 2.{2. and development Institute of Liaohe oilfield,Petrochina Liaohe Oil company,Panjin 12.010,china china Univ Petr Fac Resources & Informat Technol Beijing 102249 Peoples R China Petrochina Liaohe Oil Co Explorat & Dev Inst Liaohe Oilfield Panjin 124010 Peoples R China

The buried-hill trend is a typical style of the petroliferous structure in the faulted basin of eastern china. The Xinglongtai structure trend in the Liaohe subbasin,Bohai Bay Basin is a buried faulted-hill trend resulting from the periodic faulting of the Tai’an-Dawa faults. The structure was cut by various faults,which are interlinked and constitute the conduits for petroleum migration. Petroleum accumulated in the Tertiary sandstones and pre-Tertiary basement of metamorphosed rocks through the migration pathways of the fault system. Petroleum in the structure was derived from different hydrocarbon kitchens to form a hybrid field complex. Petroleum charged the structure from different directions and accumulated in various reservoirs through different pathways in different times. The accumulations in the buried hill trend of Xingongtai are composed of two types of traps in the two stratigraphic systems: traps in the Tertiary sandstones were formed by the fault blocks and by the pinchout of the sandstone,and traps in the pre-Tertiary basement of metamorphosed rocks were formed by fissures in the inner part of the buried hills and by the unconformity near the surface of the buried hills.

关键词： faulted basin petroleum migration and accumulation petroleum occurrence buried hills Achaean basement Liaohe subbasin Bohai Bay basin

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 {2.,Petrochina,Beijing 100083,china 2.Geological Logging Subcompany of Daqing Oil Field company Ltd.,Daqing 163411,china 3 research Institute of Petroleum exploration and {2. of Daqing Oil field company Ltd.,Daqing 163732.china Petrochina Res Inst Petr Explorat & Dev Beijing 100083 Peoples R China Daqing Oil Field Co Ltd Geol Logging Subco Daqing 163411 Peoples R China Daqing Oil field Co Ltd Res Inst Petr Explorat & Dev Dacling 163732 Peoples R China

According to stastistic of present geotemperatures at the depths of 1000,2.00,3000 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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Science china Earth Sciences 2004年第10期47卷 886-895页

作者： TANG Liangjie1,2. JIA Chengzao3, PI Xuejun4, CHEN Suping1,2. WANG Zhiyu5, XIE Huiwen4 1. Key Laboratory for Hydrocarbon Accumulation of Education Ministry, Beijing 102.49, china 2. Basin & Reservoir research Center, University of Petroleum, Beijing 102.49, china 3. Petrochina company Limited, Beijing 100011, china 4. tarim oilfield company, Petrochina company Ltd., kurle 841000, china 5. Department of Geology, University of Petroleum, Beijing 102.49, china 1. Key Laboratory for Hydrocarbon Accumulation of Education Ministry 102249 Beijing China 2. Basin & Reservoir research Center University of Petroleum 102249 Beijing China 3. Petrochina company Limited 100011 Beijing China 4. tarim oilfield {2. PetroChina Company Ltd. 841000 Kurle China 5. Department of Geology University of Petroleum 102249 Beijing China

The salt beds of Lower Tertiary developed in the mid-segment of kuqa foreland fold belt, northern tarim basin. They considerably controlled structural deformation of the belt. Ac- cording to the field observation, seismic profile interpretation and drilling data, three different structural styles of supra-salt, intra-salt and sub-salt occurred in the kuqa foreland fold belt. Su- pra-salt structural styles mainly include thrust faults and fault-related sags. Intra-slat structural styles essentially are salt-pillows, intra-salt faults and folds, and salt weld structures. Sub-salt structural styles mainly consist of imbricated thrust faults, duplex structures, pop-up and fault-related folds. It is indicated that great differences exist among supra-salt, intra-salt and sub-salt structures of kuqa foreland fold belt. The salt-related structures were formed in the same structural stress field. The dynamic mechanism of the salt-related structures is mainly associated with gravitation, compression and plastic flow of salt beds.

关键词： salt-related structural style, supra-salt structure, intra-salt structure, sub-salt structure, kuga foreland fold belt.

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 102.49,china 2.State Key Laboratory of Petroleum Resource and Prospecting,china University of Petroleum,Beijing 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

Controls on reservoir quality in the paleogene Kalatar Formation of the southwestern region of the tarim Basin,china

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Petroleum Science 2011年第3期8卷 302-315页

作者： Yang Haijun Shen Jian-Wei Wang Xu Zhang Lijuan Li Meng Key Laboratory of Marginal Sea Geology of CAS South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China exploration and development {2. Institute Tarim Oilfield Company Petroleum Company Limited Korla 841000 China Graduate School of the Chinese Academy of Sciences Beijing 100049 China

The Paleogene Kalatar Formation is a main target for petroleum ex12. ploration in the southwestern region of the tarim Basin （SWRTB） and a systematical summary of controls on reservoirs of high quality has important implications for this area. According to outcrop analysis, as well as core, and laboratory experiments based on theories of sedimentology, it can be inferred that the main pore types in the Kalatar Formation are moldic, vuggy, intercrystalline and interparticle pores, fractures, and mudstone microporosity, respectively. The foreshore in the shore-shelf depositional model is the most favorable target, wherein grainstone and dolomitized grainstone are characterized by high quality in a middle ramp subfacies of the carbonate ramp model. Diagenetic factors, such as micritization, cementation, compaction, neomorphism, silicification, and pyritization, are detrimental for reservoirs. At the same time, leaching and dolomitization can improve the quality of reservoirs. Permeability of reservoirs can be greatly improved by fractures, through which quality of reservoirs can be effectively enhanced. Concentration of CO2. temperature, and humidity are affected by changes in climate, which can have an influence on depositional setting, composition and diagenesis of sediments, and eventually the properties of reservoirs. The hot and arid climate of the Paleogene was harmful to development of reservoirs, which is demonstrated in the contemporaneous diagenetic and epigenetic stages. Shallow and deep-burial diagenesis are closely related to the formation and the connate water, however these are rarely affected by paleo-climatic variation. There is possible erosion that mainly resulted from organic acid in relative well intervals according to indications of hydrocarbons in the early diagenetic stage. Fracture systems can be established when acidic fluids are ernplaced during periods of uplift, by which pores can be effectively enlarged during the late diagenetic stages.

关键词： Kalatar Formation sedimentary facies diagenesis dolomitization fractures climaticconditions Tarirn Basin