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Characteristics and evolution of strike-slip tectonics of the Liaohe Western Sag,Bohai Bay Basin

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petroleum Science 2008年第3期5卷 223-229页

作者： Tong Hengmao Yu Fusheng Geng Changbo Key State Laboratory of Oil and Gas Resources and exploration. china University of {2. Beijing 102249 China CNPC International Research Center. beijing 100083. {2.

Because of its rich oil and gas resources and the special tectonic location of the Liaohe Western Sag （the Tanlu Fault traverses the sag）, Bohai Bay Basin, a detailed study of its strike-slip tectonics is significant in revealing the sag＇s tectonic evolution, its control on hydrocarbon accumulation, and the activity history of the northern section of the Tanlu Fault in the Cenozoic. Through systematic structure analysis of 3. seismic data of the Liaohe Western Sag, combined with balanced section analysis, a variety of structural features in relation to right-lateral strike-slip faults, such as echelon normal faults, ＂comb＂ structure, ＂flower＂ structure,＂interpretable＂ and ＂buried＂ strike-slip faults have been revealed exist in the Liaohe Western Sag. According to the research in this paper, the complex structural phenomena in the Liaohe Western Sag could be reasonably interpreted as right-lateral strike-slip activity and the strike-slip activities of the Liaohe Western Sag began in the early Oligocene. The activity was weak at the beginning （E3.1-2., then strengthened gradually and reached its strongest level in the late Oligocene （E3.1）. In the Miocene, the strike-slip activity was low and then strengthened significantly once again from the Pliocene to the present. It is speculated that the entire northern section of the Tanlu Fault has had a similar evolution history since the Oligocene.

关键词： Bohai Bay Basin Western Sag Tanlu Fault strike-slip tectonics tectonic evolution

The Cretaceous tectonic event in the Qiangtang Basin and its implications for hydrocarbon accumulation

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petroleum Science 2010年第4期7卷 466-471页

作者： Li Yalin Wang Chengshan Li Yongtie Ma Chao Wang Licheng Peng Shaonan State Key Laboratory of Geological Processes and Mineral Resources Research Center for Tibetan Plateau Geology China University of Geosciences Beijing 100083 China petroleum exploration and {2. Research Institute PetroChina Beijing 100083 China

The tectonic event during Cretaceous and its relationship with hydrocarbon accumulation in the Qiangtang Basin is discussed based on zircon U-Pb dating and the study of deformation, thermochronology and hydrocarbon formation. LA-ICPMS zircon U-Pb dating indicates that the tectonic event took place during the Early-Late Cretaceous （12.-75Ma）. The event not only established the framework and the styles of structural traps in the basin, but also led to the cessation of the first hydrocarbon formation and the destruction of previous oil pools. The light crude oil in the basin was formed during the second hydrocarbon formation stage in the Cenozoic, and ancient structural traps formed during the Cretaceous event are promising targets for oil and gas exploration.

关键词： Qinghai-Tibet plateau Qiangtang Basin tectonic event Cretaceous hydrocarbon accumulation

Poly-phase salt tectonics and hydrocarbon accumulation in Tarim superimposed basin,northwest china

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Science china Earth Sciences 2004年第Z2期47卷 104-113页

作者： TANG Liangjie1,2. JIN Zhijun1’3. JIAChengzao1’4, Pl Xuejun5 & CHEN Suping1,2.1. Key Laboratory for Hydrocarbon Accumulation of Education Ministry, beijing 102.49, china 2. Basin & Reservoir Research Center, University of {2., beijing 102.49, china 3. Institute of {2. exploration and development, SINOPEC, beijing 100083, china 4. petrochina Company Limited, beijing 100011, china 5. Tarim Oilfield Company, petrochina Company Ltd., Korla 841000, china Key Laboratory for Hydrocarbon Accumulation of Education Ministry Beijing 102249 China Basin & Reservoir Research Center University of Petroleum Beijing 102249 China Key Laboratory for Hydrocarbon Accumulation of Education Ministry Beijing 102249 China Institute of petroleum exploration and {2. SINOPEC Beijing 100083 China Key Laboratory for Hydrocarbon Accumulation of Education Ministry Beijing 102249 China petrochina Company Limited Beijing 100011 China Tarim Oilfield Company PetroChina Company Ltd. Korla 841000 China

The purpose of this paper is to discuss the poly-phase salt tectonics and its relation to the hydrocarbon accumulation of the Tarim superimposed basin. Several salt sequences are developed in the Tarim basin, they are: (1) the Mid-Early Cambrian salt sequence, mainly distributed in the west part of the north Tarim uplift and Keping uplift; (2. the Early Carboniferous salt sequence, mainly distributed in the south slope of the north Tarim uplift; (3. the Paleogene salt sequence, mainly distributed in the mid-west part of the Kuqa foreland fold belt and north Tarim uplift; and (4) the Miocene salt sequence, mainly distributed in the east part of the Kuqa foreland fold belt. The salt sequences deposited in the tectonically calm scenario, while the salt layers deformed during the period of intense tectonism. Although the salt sequences are characteristic of plastic flow, the differences of salt deformation styles exist in the different salt sequences be-cause of the different deformation mechanism. It is attractive that the distribution of the large oil-gas fields or pools has a bearing upon the salt sequences and salt structures, such as the Tahe oilfield related to the Lower Carboniferous salt sequence and laterally facies changed mudstone, the Kela No.2.gas field to the Paleogene salt structures, and the Dina gas field to the Miocene salt structures. It is indicated that the large-scale hydrocarbon accumulation is con-trolled by the poly-phase salt sequences and structures. The deep analysis of the poly-phase salt tectonics is helpful to understanding the characteristics of the structural deformation and oil-gas accumulation of the Tarim basin.

关键词： superimposed basin, salt tectonics, hydrocarbon accumulation, Tarim basin.

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华北东部盆地油气勘探潜力与发展方向

石油学报 2003年第4期24卷 7-12页

作者：王毓俊田在艺中国海洋石油勘探研究院河北高碑店074010 中国石油勘探开发研究院北京100083

华北东部盆地是典型的多旋回叠加改造型盆地 ,中上元古界、下古生界、上古生界、中生界和新生界普遍具有生烃潜力和储盖组合条件。漫长的地质演化和新生代构造断裂活动形成了上第三系至太古界多层系多类型的油气藏 ,在凹陷、凸起的各部... 详细信息

华北东部盆地是典型的多旋回叠加改造型盆地 ,中上元古界、下古生界、上古生界、中生界和新生界普遍具有生烃潜力和储盖组合条件。漫长的地质演化和新生代构造断裂活动形成了上第三系至太古界多层系多类型的油气藏 ,在凹陷、凸起的各部位 ,分布着大型油气聚集带。根据盆地历史演化、勘探程度差异性及油气发现的特点 ,对华北东部盆地油气勘探潜力进行了分析。在该地区应着重研究多勘探层系、勘探程度的差异性和地质理论的新进展 ,充分挖掘各探区内各单元的油气资源潜力 ,第三系深层、前第三系、滩海和浅海应是华北东部盆地 2

关键词：华北东部多旋回叠加盆地多层系油气藏第三系深层前第三系滩海浅海勘探潜力

Advances and problems in hydrocarbon exploration in the Tazhong area, Tarim Basin

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petroleum Science 2010年第2期7卷 164-178页

作者： Zhou Xinyuan Pang Xiongqi Li Qiming Pang Hong Xiang Caifu Jiang Zhenxne Li Sumei Liu Luofu Tarim Oilfield Company PetroChina Korla Xinjiang 841000 China Basin and Reservoir Research Center China University of Petroleum Beijing 102249 China State Key Laboratory of petroleum Resources and Prospecting Beijing 102249 China

Located in the middle of the Tarim Basin, Tazhong is a typical area of compound reservoirs rich in oil and gas found in the Carboniferous, Silurian and Ordovician strata. The proved, probable and possible reserves （3. reserves） in the area amount to 5×108 tons, so it is of great significance to study the advances and problems in hydrocarbon exploration in the Tazhong area. On the basis of exploration history and analysis of scientific problems, we outline eight achievements： distribution characteristics of reservoirs, stages of reservoir formation, different sources of oil and gas and their respective contributions, the effective regional caprock and reservoir-caprock combinations dominating the vertical distribution of hydrocarbon reservoirs, the control of the Tazhong Palaeo-uplift on reservoir formation and establishing geologic models, structure balance belts influencing the reconstruction and residual potential of reservoirs after accumulation, the rules and mechanisms of fractures controlling oil and gas, and the types of favorable reservoirs and their characteristics of controlling oil and gas distribution. We further point out the main problems about the oil and gas exploration in the Tazhong area and put forward some relevant proposals.

关键词： Tarim Basin petroleum geology and exploration controlling factors of hydrocarbon accumulation rules of hydrocarbon accumulation

Reservoir differences and formation mechanisms in the Ke-Bai overthrust belt,northwestern margin of the Junggar Basin,china

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petroleum Science 2010年第1期7卷 40-48页

作者： Zhu Xiaomin Zhu Shifa Xian Benzhong Chen Shuping Kuang Lichun Xue Xinke Xue Jingjing You Xincai State Key Laboratory of petroleum Resources and Prospecting China University of Petroleum Beijing 102249 China Faculty of Geoscience China University of Petroleum Beijing 102249 China Research Institute of petroleum exploration and {2. Xinjiang Oilfield Company CNPC Karamay Xinjiang 834000 China

There are some differences in reservoir quality of clastic rock between the hanging wall and the foot wall of the Ke-Bai overthrust belt, northwestern margin of the Junggar Basin, western china, which affect the efficient petroleum {2. in this highly mature {2. area. Based on a large number of thin-sections, cast thin-sections, and physical property analysis of cores, we systematically discuss the Permian-Jurassic reservoir differences between the hanging wall and the foot wall of the Ke- Bai overthrust fault from the aspects of structural evolution, time-space distribution of the depositional system, diagenesis characteristics, and reservoir quality and analyzed the reasons for the differences in reservoir properties. The overthrusting of the Ke-Bai fault directly results in different burial histories, diagenesis evolution, and porosity evolution between the hanging wall and the foot wall. The diflbrences of reservoir characteristics are mainly embodied in buried depth, grain size, sedimentary facies, diagenetic stage, and reservoir quality. The analysis results showed that burial history and depositional characteristics controlled by overthrusting are direct influencing factors of reservoir differences. Because of shallow burial depth of the hanging wall, the reservoir compaction is weak and primary pores are preserved well. The porosity of reservoir on the hanging wall is generally 10%-2.%. The strata on the foot wall are deeply buried, and there are mainly mixed pores with the average porosity of 5%-2.%. The favorable reservoir on the foot wall is generally developed near faults or in the channel sand bodies, which are usually dissolution development areas.

关键词： Junggar Basin overthrust belt reservoir differences formation mechanism

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 exploration and {2. 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

A comparative study of boron isotopes and trace elements of the marine foraminifers during the last glacial maximum and Holocene

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Science china Earth Sciences 2010年第12期53卷 91-100页

作者： NI YunYan 1,2.1 Research Institute of petroleum exploration and {2.,petrochina,beijing 100083.china 2.Bristol Isotope Group,Department of Earth Sciences,Bristol University,Wills Memorial Building,Queens Road,Bristol BS8 1RJ,United Kingdom 1. Research Institute of petroleum exploration and {2. PetroChina Beijing 100083 China2. Bristol Isotope Group Department of Earth Sciences Bristol University Wills Memorial Building Queens Road Bristol BS8 1RJ UK

Boron isotopic compositions in marine planktonic foraminifers can record changes in seawater pH and hence provide a new tool to reconstruct the changes of paleo-atmospheric *** a comparative study was done on boron isotopes and trace element abundances of planktonic foraminifers,Globigerinoides sacculifer and Globigerinoides ruber from three tropical ODP sites,Site 806B,Site 664C and Site *** is demonstrated here that *** is a better species to be used for downcore boron isotope analyses on glacial-interglacial scales,particularly since *** is prone to dissolution causing unexpectedly light boron isotopes during glacial *** has been shown that the trace elements composition of foraminifers (i.e.,Mg/Ca,U/Ca,B/Ca,and Li/Ca) can reflect the variations of seawater temperature and/or [CO3.2.].However,all of these systems are highly species de-pendent and affected by other vital effects,and it is therefore important to perform necessary calibrations when applying them to the downcore analyses.

关键词： foraminifers boron isotope trace element last glacial maximum atmospheric PCO2

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Tectonic stress field and its effect on hydrocarbon migration and accumulation in Mesozoic and Cenozoic in Kuqa depression, Tarim basin

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Science china Earth Sciences 2004年第Z2期47卷 114-124页

作者： ZENG Lianbo1, TAN Chengxuan2.& ZHANG Mingli3.1. Key Laboratory for Hydrocarbon Accumulation in petroleum University, Ministry of Education, beijing 102.49, {2. 2. Institute of Geomechanics, Chinese Academy of Geological Sciences, beijing 100081, {2. 3. Institute of exploration and development, {2. petroleum and Chemical Corporation, beijing {13., {2. Key Laboratory for Hydrocarbon Accumulation in petroleum University Ministry of Education Beijing 102249 China Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China Institute of exploration and development China Petroleum and Chemical Corporation Beijing 100083 China

Through rock acoustic emission experiments and structural deformation analysis, the tectonic stages in Meso-Cenozoic in the Kuqa depression of the Tarim basin are firstly divided. Then, combining with rock magnetic fabric analysis and memory information, the distribution characteristics of tectonic stress field of every tectonic stage are quantificationally resumed. At the same time, according to the distribution relation of tectonic stress field of hydrocarbon for-mation stage by the finite element numerical simulation method and the known hydrocarbon reservoirs, the effects of tectonic stress field on hydrocarbon migration and accumulation are further analyzed. The Kuqa depression has mainly experienced six tectonic movements since Mesozoic. Except that the tectonic stress field of the Early Yanshan stage (2.8—13. Ma) showed northeast-southwest extensional stress field where the orientation of the maximum prin-cipal compressive stress (s 1) was northwest-southeast, the others were compressive stress field where the orientations of the maximum principal compressive stress (s 1) were near north-south. Along with the closure of the paleo-Tethys ocean, the Kuqa depression in the Indosinian stage (2.0—2.8 Ma) was in strong compressive circumstance with apparently big maximum principal stress (s 1) magnitude. Due to the equilibrium adjustment of interior Eurasia, the Kuqa depression in the Early Yanshan stage (2.8—13. Ma) was in weak extensional circumstance with appar-ently small maximum principal stress (s 1) magnitude. From the Late Yanshan stage (13.—65 Ma) on, with a series of collision events occurring at the south edge of Eurasia, the Kuqa depression was in compressive circumstance again in which the maximum principal stress (s 1) magnitude was from small to big in turn. The Late Himalayan stage (2.6—0.7 Ma) was the main tectonic deformation stage with the biggest principal compressive stress (s 1) magnitude. Tectonic stress field plays a dominant role in hydroca

关键词： tectonic stress field, Meso-Cenozoic, hydrocarbon formation, Kuqa depression, Tarim basin.