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Conceptual design,data model and key techniques of“3D Assistant”

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中国有色金属学会会刊：英文版 2011年第S3期21卷 692-698页

作者： LI Qing-yuan1, ZHANG Xuan2. JIN Yang2. ZHOU Hui3, WANG Qian-jin3,WEI Zhan-yin1 1. Key laboratory of geo-Informatics, Chinese Academy of surveying and Mapping, {2. 100830, china 2. school of geo-science and surveying Engineering, china university of Mining and Technology, beijing 100083. china 3. school of geomatics, Liaoning Technical university, Fuxin 12.000, china [a] Key laboratory of geo-Informatics Chinese Academy of Surveying and Mapping Beijing 100830 China [b] school of geo-science and surveying Engineering China University of Mining and Technology Beijing 100083 China [c] school of geomatics Liaoning Technical University Fuxin 123000 China

Conceptual design, data model and key techniques of "geo-engineer 3D assistant", an underground 3D GIs oriented to geology and mine application, were discussed. In particular, the importance of high-order smoothing triangular pieces to surface's fine expression in {2. modeling was emphasized. The contour mode is the most favorite mode of the three modes about surface expression: DEM, TIN and contour. Topology in underground 3D modeling with CAGD was compared. From the view of boundary and coboundary, which is soul of Is 19107 (geographic information spatial schema), 3D underground topology was re-examined.

关键词： 3D assistant true 3D GIs fine expression of surface contour mode 3D topology

study on attribute characterization for reservoir dynamic monitoring by seismic

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science china Earth sciences 2008年第S2期51卷 218-225页

作者： CHEN XiaoHong1,3,LI JingYe2.3 & ZHAO Wei4 1 Key lab of geophysical Exploration of CNPC,{2. Petroleum university,beijing 102.49,{2. 2.Basin & Reservoir Research center,{2. Petroleum university,beijing 102.49,{2. 3.state Key laboratory of Petroleum Resource and Prospecting,{2. university of Petroleum,beijing 102.49,{2. 4 Research center of CNOOC,beijing 10002.,{2. 1. Key lab of geophysical Exploration of CNPC China Petroleum University Beijing 102249 China 3. state Key laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing 102249 China 2. Basin & Reservoir Research center China Petroleum University Beijing 102249 China 4. Research center of CNOOC Beijing 100027 China

study on characterizing reservoir parameters dynamic variations by time-lapse seismic attributes is the theoretical basis for effectively distinguishing reservoir parameters variations and conducting time-lapse seismic interpretation,and it is also a key step for time-lapse seismic application in real oil fields. Based on the rock physical model of unconsolidated sandstone,the different effects of oil saturation and effective pressure variations on seismic P-wave and s-wave velocities are calculated and analyzed. Using numerical simulation on decoupled wave equations,the responses of seismic amplitude with different offsets to reservoir oil saturation variations are analyzed,pre-stack time-lapse seismic attributes differences for oil saturation and effective pressure variations of P-P wave and P-s converted wave are calculated,and time-lapse seismic AVO (Amplitude Versus Offset) response rules of P-P wave and P-s converted wave to effective pressure and oil saturation variations are compared. The theoretical modeling study shows that it is feasible to distinguish different reservoir parameters dynamic variations by pre-stack time-lapse seismic information,including pre-stack time-lapse seismic attributes and AVO information,which has great potential in improving time-lapse seismic interpreta-tion precision. It also shows that the time-lapse seismic response mechanism study on objective oil fields is especially important in establishing effective time-lapse seismic data process and interpreta-tion scheme.

关键词： time-lapse seismic dynamic monitoring rock physical model pre-stack attribute Amplitude Versus Offset (AVO)

Dehydration melting of solid amphibolite at 2.0 GPa: Effects of time and temperature

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science china Earth sciences 2005年第8期48卷 1120-1133页

作者： ZHOU Wenge1, XIE Hongsen1, LIU Yonggang1, ZHENG Xiaogang1, ZHAO Zhidan2.& ZHOU Hui3 1. laboratory of Material in the Earth’s Interior, Institute of geochemistry, Chinese Academy of sciences, Guiyang 550002. {2. 2. Department of geology, {2. university of geosciences, beijing 100083. china 3. Department of geology, Peking university, beijing 100871, {2. 1. laboratory of Material in the Earth’s Interior Institute of Geochemistry Chinese Academy of Sciences 550002 Guiyang China 2. Department of geology China University of Geosciences 100083 Beijing China 3. Department of geology Peking University 100871 Beijing China

Two sets of dehydration-melting with a natural solid amphibolite, collected from North Himalayan structure zone, Tibet, have been carried out in multi-anvil apparatus at 2.0 GPa and 800―1000℃, for 12.2.0 h. One is keeping the pressure at 2.0 GPa and the annealing time of 12.h, changing the temperature (800―1000℃). The other is keeping the pressure at 2.0 GPa and temperature at 850℃, varying the annealing time (12.2.0 h). The products are inspected with microscope and electron probe. The results indicate that at 2.0 GPa, annealing time of 12.h, garnets, melts and clinopyroxenes occur in amphibolite gradually with increasing temperature and the chemical compositions of melt vary from tonalite to granodiorite, and then to tonalite. However, at 2.0 GPa and 850℃, with the annealing time increasing, the garnets, melts and cli-nopyroxenes also occur in amphibolite gradually and the chemical compositions of melt vary from tonalite to granodiorite. In both cases, melts interconnect with each other when the contents of melt are over the 5 vol.%. the viscosities of the melt produced in amphibolite at temperature higher than 850℃ are on a level with 104 Pa·s. The interconnected melt with such a viscosity may segregate from the source rock and form the magma over reasonable geological time. Therefore, it is believed that at the lower part of the overthickened crust, the tonlitic and grano-dioritic magma may be generated through the dehydration melting of amphibolite.

关键词： solid amphibolite, high pressure, high temperature, time, partial melting.

spatio-temporal carbon isotope variation during the Ediacaran period in south china and its impact on bio-evolution

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science china Earth sciences 2009年第10期52卷 1520-1528页

作者： WANG XinQiang1 & sHI XiaoYing1,2.1 school of Earth science and Mineral Resources, china university of {2.sciences, beijing 100083. china 2.state Key laboratory of geological Processes and Mineral Resources, beijing 100083. china school of Earth science and Mineral Resources China University of Geosciences Beijing 100083 China state Key laboratory of geological Processes and Mineral Resources Beijing 100083 China

The Ediacaran period is characterized by the extremely negative carbon isotope anomalies and great biotic evolution in Earth history. At least four negative carbon isotope anomalies have been reported from this interval in south china so far. It is traditionally argued that the isotope variations can be used as a useful tool for global correlation of Ediacaran succession; however, more and more researches argued against this idea. We reviewed the previously published carbon isotope data in south china, and distributed the mean values of a certain time to the paleo{2.graphic maps. The results show that the carbon isotope values (δ13C) vary greatly in different environments, but a clear tendency of becoming lighter from shallow platform to deep basin, with a maximum variation up to 1‰ Moreover, the important changes in Ediacaran biota, marked by the introducing of new taxa or ecologic groups, seemed to always postdate the negative anomalies but coincide with the positive shift. If the negative excursions represented the oxidation of a large dissolved organic carbon (DOC) reservoir in the ocean, the diverse Ediacaran organisms and the carbon isotope anomalies may suggest totally different environments: oxic and anoxic/euxinic. We also suggest that the elimination of euxinic state through precipitation of pyrites is one of the important environment factors in prompting the Ediacaran bio-evolution.

关键词： Ediacaran south china carbon isotope spatio-temporal variations bio-evolution

Zhang-Xuan thermal uplift and its genesis

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Progress in Natural science:Materials International 2005年第8期15卷 725-732页

作者： sHAO Ji'an1*, NIU shuyin2. ZHANG Lüqiao3 and LI Hongyang2.1. school of Earth and space sciences, Peking university, beijing 100871, {2. 2. shijiazhuang university of Economics, shijiazhuang 050031, {2. 3. geological Bureau of Inner Mongolia, Huhhot 01002., {2.) school of Earth and space sciences Peking University Beijing 100871 China. shijiazhuang university of Economics Shijiazhuang 050031 China. geological Bureau of Inner Mongolia Huhhot 010020 China

Based on the researches of the Mesozoic thermal evolution history, the deformed structures, and fission track analysis of the Zhangjiakou-Xuanhua area, we obtained the following knowledge: the area experienced in 140 Ma an underplating which is marked by emplacement of mantle derived magma; during 130—110 Ma a series of eruptions and intrusions happened, and during 80—10 Ma a rising process occurred which is synchronous with the adjacent Taihang and Yanshan Mountains and was accompanied by a series of structures down slipping from the just formed Zhang-Xuan uplift toward its periphery. Combining the Zhang-Xuan thermal lift with the large detachment structure in Baoding depression of the North china Basin in the Late Mesozoic confirms that an even larger extensional tectonic background existed in North china during this period.

关键词： Zhang-Xuan area underplating thermal uplift fission track extensional structure.

On three-dimensional geological modeling and visualization

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science china Earth sciences 2004年第8期47卷 739-748页

作者： WU Qiang1 & XU Hua2.1. Department of Resource Exploitation Engineering, china university of Mining and Technology,{2. 2. beijing Institute of Petrochemical Technology, beijing 102.17, china 1. Department of Resource Exploitation Engineering China University of Mining and Technology 100083 Beijing China 2. beijing Institute of Petrochemical Technology 102617 Beijing China

The technology of 3D geological modeling will bring about great changes in the methods of geological data acquiring, storing, processing and displaying. However, no perfect or convenient software systems have been developed up to now since the {2.logic data which re-flect geological entities bear the feature of diversity, uncertainty and complexity. some supervoxel models, mathematical models of fault and {2.metrical models of fold have been contrived so as to show the space {2.metric configuration of the complicated {2.logic structures. The application-oriented system architecture for 3D geological modeling is established; and a novel design concept based on spatial data processing is also proposed with the technology of solid modeling as its core and the application of models as its objective. Theories and methods for 3D geological modeling will hopefully be enriched and developed. In the light of these theories and methods, a feature-based navigation visualization technique is also put forward in the paper. By integrating {2.-database, graphics libraries and KBs with 3D dynamic simulation systems, {2.logists will be able to capture the partial characteristics and whole structure embodied in the geological data in a direct-viewing, figurative and accurate manner.

关键词： 3D geological modeling,geometrical model,system architecture,visualization

A New sHRIMP Age of the Xiamaling Formation in the North china Plate and Its geological significance

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Acta geologica sinica(English Edition) 2007年第6期81卷 1103-1109页

作者： GAO Linzhi~(1,*)ZHANG Chuanheng~2.sHI Xiaoying~2.ZHOU Hongrui~2.WANG Ziqiang~2.sONG Biao~(1,3) 1 Institute of geology,Chinese Academy of geological sciences,{2. 100037,china 2.china university of geosciences({2.),{2. 100083.china 3 {2. sHRIMP Central,100037 {2.,china Institute of geology Chinese Academy of Geological Sciences Beijing 100037 China

setting up the hypostratotype of late Precambrian is the main aim of the research on the Meso-and Neoproterozoic in North *** chronostratigraphic position is the key in this study. However,many key horizons have not been calibrated with the high-quality isotopic *** the reported new U-Pb age with the sensitive High-Resolution Ion Microprobe（sHRIMPⅡ）,a zircon U- Pb age was obtained of the ash bed in the Xiamaling Formation in North china Plate,yielding a weighted mean;Pb/;U age of 1368±12.*** is the first sHRIMP U-Pb age from the Xiamaling Formation in the North china Plate,and represents the depositing time of the middle part of the Xiamaling *** zircon age plays an important role to understanding {2. evolution of the North china Plate during Meso-and Neoproterozoic.

关键词： sHRIMP U-Pb Dating Mesoproterozoic Xiamaling Formation North china Plate

Propagation characteristics of converted refracted wave and its application in static correction of converted wave

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science china Earth sciences 2008年第S2期51卷 226-232页

作者： LIU Yang1,2.& WEI XiuCheng3 1 state Key laboratory of Petroleum Resource and Prospecting,china {2. of Petroleum,beijing 102.49,china 2.CNPC geophysical Exploration Key laboratory,china {2. of Petroleum,beijing 102.49,china 3 Exploration and Production Research Institute,sINOPEC,beijing {12.china china Univ Petr State Key Lab Petr Resource & Prospecting Beijing 102249 Peoples R China china Univ Petr CNPC Geophys Explorat Key Lab Beijing 102249 Peoples R China sINOPEC Explorat & Prod Res Inst Beijing 100083 Peoples R China

Three-component seismic exploration through P-wave source and three-component geophone is an effective technique used in complicated reservoir exploration. In three-component seismic exploration data processing,one of the difficulties is static correction of converted wave. This paper analyzes propagation characteristics of non-converted and converted refracted waves,and discovers a favor-able condition for the formation of converted refracted wave,i.e. the velocity of overlaying medium s wave is much lower than that of underlying medium s wave. In addition,the paper proposes the static correction method of converted wave based on PPs converted refracted wave,and processes the real three-component seismic data with better results of static correction of converted wave.

关键词： PPs converted refracted wave converted wave static correction

southeastern extension of the Red River fault zone (RRFZ) and its tectonic evolution significance in western south china sea

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science china Earth sciences 2006年第8期49卷 839-850页

作者： LIU Baoming1,2.3, XIA Bin1, LI Xuxuan1,3, ZHANG Minqiang1,3, NIU Binhua2. ZHONG Lifeng1, JIN Qinghuan1,4 & JI shaocheng1,5 1. Key laboratory of Marginal sea geology and Resources, Chinese Academy of sciences,Guangzhou 510640, {2. 2. {2. university of geosciences (beijing), beijing 100083. china 3. Research center of science & Technology Department, CNOOC, beijing 10002., {2. 4. Guangzhou Marine geological survey, Ministry of Land & Resources, Guangzhou 510075, {2. 5. Ecole Polytechnique Montreal, H3C3A7, Canada 1. Key laboratory of Marginal sea geology and Resources Chinese Academy of Sciences Guangzhou 510640 China 2. china university of {2.sciences (beijing) Beijing 100083 China 3. Research center of science & Technology Department CNOOC Beijing 100027 China 4. Guangzhou Marine geological survey Ministry of Land & Resources Guangzhou 510075 China 5. Ecole Polytechnique Montreal H3C3A7 Canada

Recent geophysical surveys and basin modeling suggest that the No.1 fault in the Ying- gehai basin (YGHB) is the seaward elongation of the Red River fault zone (RRFZ) in the south china sea (sCs). The RRFZ, which separates the south china and Indochina block, extends first along the Yuedong fault, offshore of Vietnam, and then continues southward and breaks off into two branches: the Lupar fault and the Tinjia fault. The southern extension of the Lupar fault dies out beneath the NW Borneo while the Tinjia fault extends southeast and reaches the Brunei-sabah area. According to the gravity and geomagnetic data, and the tectonic evolution of the basins, there are different evolution histories between the Wan’an basin (WAB) and the basins in the Nansha block. The Tinjia fault may be the boundary between the Balingian block and the Nansha block. Hence, the line linking the Yue- dong fault and the Tinjia fault, which both are continental margin faults and strike-slip ones in the geological evolution histories, constitute the boundary between the Indochina and Nansha block. The Lupar fault, in contrast, is an intraplate fault within the Indochina block. The results provide new hints for reconstructing the tectonic evolution history of the RRFZ and the opening of the sCs, and also a framework for hydrocarbon prospecting in the region.

关键词： Red River fault zone, tectonic evolution, fault, extension, western south china sea.