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Porosity Prediction from Well Logs Using Back Propagation Neural Network Optimized by Genetic Algorithm in One Heterogeneous Oil Reservoirs of Ordos Basin, China

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Journal of Earth Science 2021年第4期32卷 828-838页

作者： Lin Chen Weibing Lin Ping Chen Shu Jiang Lu Liu Haiyan Hu Wuhan Center China Geological SurveyWuhan 430205China Energy and Geoscience Institute University of UtahSalt Lake City 84108USA Hubei Key Laboratory of Marine Geological Resources China University of GeosciencesWuhan 430074China College of Marine Science and Technology China University of GeosciencesWuhan 430074China Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of GeosciencesWuhan 430074China Exploration and Development Institute Huabei Branch Company of SINOPECZhengzhou 450006China School of Geosciences Yangtze UniversityWuhan 430100China

A reliable and effective model for reservoir physical property prediction is a key to reservoir characterization and *** present,using well logging data to estimate reservoir physical parameters is an important means for reservoir *** on the characteristics of large quantity and complexity of estimating process,we have attempted to design a nonlinear back propagation neural network model optimized by genetic algorithm(BPNNGA)for reservoir porosity *** model is with the advantages of self-learning and self-adaption of back propagation neural network(BPNN),structural parameters optimizing and global searching optimal solution of genetic algorithm(GA).The model is applied to the Chang 8 oil group tight sandstone of Yanchang Formation in southwestern Ordos *** to the correlations between well logging data and measured core porosity data,5 well logging curves(gamma ray,deep induction,density,acoustic,and compensated neutron)are selected as the input neurons while the measured core porosity is selected as the output *** number of hidden layer neurons is defined as 20 by the method of multiple calibrating *** results demonstrate that the average relative error of the model output is 10.77%,indicating the excellent predicting effect of the *** predicting results of the model are compared with the predicting results of conventional multivariate stepwise regression algorithm,and BPNN *** average relative errors of the above models are 12.83%,12.9%,and 13.47%,*** show that the predicting results of the BPNNGA model are more accurate than that of the other two,and BPNNGA is a more applicable method to estimate the reservoir porosity parameters in the study area.

关键词： porosity prediction well logs back propagation neural network genetic algorithm Ordos Basin Yanchang Formation

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Generic synthesis and versatile applications of molecularly organic-inorganic hybrid mesoporous organosilica nanoparticles with asymmetric Janus topologies and structures

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Nano Research 2017年第11期10卷 3790-3810页

作者： Guiju Tao Zhengyuan Bai Yu Chen Heliang Yao Meiying Wu Ping Huang Luodan Yu Jiamin Zhang Chen Dai Long Zhang Key Laboratory of Materials for High Power Laser Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800 China sinopec Shanghai Research Institute of Petrochemical Technology Shanghai 201208 China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China Analysis and Testing Center for Inorganic Materials Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China Shanghai(Red Cross)Blood Center Shanghai Institute of Blood Transfusion Shanghai 200051 China Department of Ultrasound the East Hospital Affiliated to Tongji University Shanghai 200120 China

Precise control over the morphology,nanostructure,composition,and particle size of molecularly organic-inorganic hybrid mesoporous organosilica nanoparticles （MONs） still remains a major challenge,which severely restricts their broad *** this work an efficient bridged organic group-determined growth strategy has been proposed for the facile synthesis of highly dispersed and uniform MONs with multifarious Janus morphologies,nanostructures,organic-inorganic hybrid compositions,and particle sizes,which can be easily controlled simply by varying the bridged organic groups and the concentration of bis-silylated organosilica precursors used in the *** addition,the formation mechanism of Janus MONs determined by the bridged organic group has been *** on the specific structures,compositions,and asymmetric morphologies,all the synthesized Janus MONs with hollow structures （JHMONs） demonstrate excellent performances in nanomedicine as desirable drug carriers with high drug-loading efficiencies/capacities,pH-responsive drug releasing,and enhanced therapeutic efficiencies,as attractive contrastenhanced contrast agents for ultrasound imaging,and as excellent bilirubin adsorbents with noticeably high adsorption capacities and high blood *** developed versatile synthetic strategy and the obtained JHMONs are extremely important in the development and applications of MONs,particularly in the areas of nanoscience and nanotechnology.

关键词： mesoporous organosilica Janus synthetic mechanism drug carrier blood compatibility

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Swelling Behaviors and Pervaporation Properties of CA/PAN Composite Membranes for Separation of Caprolactam/Water Mixtures

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Wuhan University Journal of Natural Sciences 2010年第5期15卷 449-454页

作者： ZHANG Lei LUO Yunbai XUE Gaifeng YU Ping Research and Development Center of Wuhan Iron and Steel (group) Corp Wuhan 430080 Hubei China College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 Hubei China

The composite membranes with cellulose acetate（CA） as the separating layer material and polyacrylonitrile（PAN） as the supporting layer material were prepared for separating caprolactam（CPL） from CPL/water mixtures by pervaporation *** swelling experiments were carried out to investigate the effects of swelling time and CPL concentration on the degree of *** results showed that the CA membrane reached swelling equilibrium within 24 h,and the degree of swelling first slightly decreased then increased with the increase of CPL concentration in the feed under the experimental *** comparing flux with permeance,and separation factor with selectivity,we found out that the separation performance of the CA/PAN composite membrane is more strongly dependent on its hydrophilic/hydrophobic nature as well as on the effects of operating parameters,such as feed composition concentration and feed temperature.

关键词： composite membranes separate CPL/water mixtures pervaporation performances

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China Strengthens Energy Cooperation with Venezuela

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China Oil & Gas 2005年第3期12卷 61-61页

作者： Zhou Deliang sinopec Zhongyuan Petroleum Co.Ltd

Venezuela is the 5th biggest oil export country in the world, and a member of OPEC. With rich reserves of crude oil, its average daily oil output reached 3.1 million barrels in 2004. Venezuela＇s state oil company Petroleos de Venezuela SA （PDVSA）, the biggest oil company in South America, launched its China representative office in Beijing on 22 Aug. Ma Fucai, Vice Director of the State Energy Leading group Office, and Rafael Ramrez, Minister of the Energy and Oil Ministry of Republic of Venezuela, attended the opening ceremony. Ramrez is the president of PDVSA at the same time. He said the opening of PDVSA China Representative Office is a sign reflecting a new start-point for the energy cooperation between China and Venezuela. Cooperation between oil companies from both countries will be strengthened as well.

关键词：中国委内瑞拉能源工业能源合作油气资源

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Geometric effect promoted hydrotalcites catalysts towards aldol condensation reaction

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Chinese Journal of Catalysis 2020年第8期41卷 1279-1287页

作者： Huimin Wang Weihan Bing Chunyuan Chen Yusen Yang Ming Xu Lifang Chen Lei Zheng Xiaolin Li Xin Zhang Jianjun Yin Min Wei State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China China Tianchen Engineering Corporation Technology Research and Development Center Tianjin 300400China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China sinopec Beijing Research Institute of Chemical Industry Beijing 100013China

In solid basic catalysis field,how to achieve optimized activity and desired stability through elaborate control over basic site properties remains a *** this work,taking advantage of the structure memory effect of layered double hydroxides(LDHs),rehydrated Ca4 Al1-x Gax-LDHs and Ca4 Al1-x Inx-LDHs catalysts were prepared and applied in aldol condensation reaction that isobutyraldehyde(IBD)reacts with formaldehyde(FA)to obtain hydroxypivalaldehyde(HPA).Notably,the resulting re-Ca4 Al0.90Ga0.10-LDHs exhibits an extraordinarily-high catalytic activity(HPA yield:72%),which is to our best knowledge the highest level in this *** weak Br?nsted basic site,7-coordinated Ca-OH group,which serves as an active site,catalyzes the condensation process and promotes the product *** on structure-property correlations demonstrate that Ga as a structural promoter induces a moderate expansion of the laminate lattice,which results in a significant increase in the concentration of weak basic sites in re-Ca4Al0.90Ga0.10-LDHs,accounting for its high catalytic *** work illuminates that geometric structure of basic active sites can be tuned via introducing catalyst additive,which leads to a largely improved performance of hydrotalcite solid basic catalysts towards aldol condensation reaction.

关键词： Solid basic catalyst Geometric structure Structural promoter Aldol condensation Reconstructed hydrotalcite material

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Superoxide Dismutase Plays an Important Role in Maize Resistance to Soil CO_(2)Stress

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Acta Geologica Sinica(English Edition) 2023年第3期97卷 995-1001页

作者： XUE Lu MA Junjie HU Qian MA Jinfeng Carbon Neutral College(Yulin) Northwest UniversityXi’an 710069China College of Life Science Yulin UniversityYulinShaanxi 719000China National&Local Joint Engineering Research Center of Carbon Capture and Storage Technology Northwest UniversityXi’an 710127China Shaanxi Key Laboratory for Carbon Neutral Technology Northwest UniversityXi’an 710069China Department of Geology Northwest UniversityXi’an 710069China College of Urban and Environmental Sciences Northwest UniversityXi’an 710127China Oil Production Plant No.1 Sinopec North China Oil&Gas CompanyXianyangShaanxi 712000China

CO_(2)capture and storage(CCS)has the risk of CO_(2)leakage,and this leakage always increases soil CO_(2)concentration,and the long-term CO_(2)stress damages crop production in *** maize,the growth characteristics,such as plant height and yield,and physiological indexes(osmoregulation substances and antioxidant enzymes)were explored under different simulative CO_(2)leakage ***,the relationship between maize physiological indexes and soil CO_(2)concentration was analyzed,showing that soil CO_(2)stress inhibited maize growth to a certain extent,resulting in shorter plants,thinner stems and lower kernel *** an increase in soil CO_(2)concentration,the contents of malondialdehyde,soluble sugar and soluble protein in maize leaves increased;with continuing stress,the increase rate of malondialdehyde was greatly augmented,whereas the increase rates of soluble sugar and soluble protein *** extended CO_(2)stress,the activity of the enzyme superoxide dismutase(SOD)increased continuously,while the activities of catalase and peroxidase first increased and then *** dismutase activity was closely correlated with soil CO_(2)concentration(r=0.762),and responded quickly to the change of soil CO_(2)concentration(R~2=0.9951).Therefore,SOD plays an important role in maize resistance to soil CO_(2)*** study will help further understanding of the mechanism of maize tolerance to soil CO_(2)stress,providing a theoretical basis for agricultural production in CCS project areas.

关键词： CO_(2)capture and storage CO_(2)leakage soil CO_(2)stress antioxidant enzyme system maize

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Hydrocarbon Generation Potential and Organic Matter Enrichment Mechanism of the Cambrian Marine Shale in the Tadong Low Uplift,Tarim Basin

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Acta Geologica Sinica(English Edition) 2024年第5期98卷 1301-1321页

作者： MIAO Huan WANG Yanbin JIANG Zhenxue ZHAO Shihu SHANG Peng GONG Xun TAO Chuanqi ZHANG Yu State Key Laboratory of petroleum Resources and Engineering China University of PetroleumBeijing 102249China Unconventional Unconventional Petroleum Research Institute Research Institute China University of PetroleumBeijing 102249China College of Geoscience and Surveying Engineering China University of Mining and TechnologyBeijing 100083China Petroleum Exploration and Production Research Institute SINOPECBeijing 102206China Second Gas Production Plant PetroChina Changqing Oilfield CompanyYulinShaanxi 719000China School of Earth and Space Sciences Peking UniversityBeijing 100871China School of Civil Engineering Liaoning Petrochemical UniversityFushunLiaoning 113001China

Cambrian shales in China and elsewhere contain abundant oil and gas ***,due to its deep burial and limited outcrop,there has been relatively little research conducted on *** Cambrian shale of the Tadong low uplift in the Tarim Basin of western China,specifically the Xidashan-Xishanbulake Formation(Fm.)and overlying Moheershan *** a case study through the use of organic petrology,mineralogy,organic and elemental geochemistry,with the aim of analyzing and exploring the hydrocarbon generation potential(PG)and organic matter(OM)enrichment mechanisms within these shale *** results indicate that:(1)the Cambrian shale of the Tadong low uplift exhibits relatively dispersed OM that consists of vitrinite-like macerals and solid *** formations have a higher content of quartz and are primarily composed of silica-based lithology;(2)shale samples from the Xidashan-Xishanbulake and Moheershan formations demonstrate high total organic carbon(TOC)and low pyrolytic hydrocarbon content(S_(2))*** OM is predominantly typeⅠand typeⅡkerogens,indicating a high level of maturation in the wet gas *** shales have undergone extensive hydrocarbon generation,showing characteristics of relatively poor PG;(3)the sedimentary environments of the Xidashan-Xishanbulake and Moheershan formations in the Tadong low uplift are *** were deposited in warm and humid climatic conditions,in oxygen-deficient environments,with stable terrigenous inputs,high paleoproductivity,high paleosalinity,weak water-holding capacity,and no significant hydrothermal activity;and(4)the relationship between TOC and the paleoproductivity parameter(P/Ti)is most significant in the Lower Cambrian Xidashan-Xishanbulake Fm.,whereas correlation with other indicators is not *** suggests a productivity-driven OM enrichment model,where input of landderived material was relatively small during the Middle Cambrian,and the ancient water exhibited lower salinity.

关键词： Conventional resources hydrocarbon generation potential geochemistry sedimentary environment enrichment mechanism organic matter Cambrian Tadong low uplift

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Late Mesozoic rifting and its deep dynamic mechanisms in the central Sulu orogenic belt: Records from Lingshan Island

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Science China Earth Sciences 2022年第9期65卷 1751-1771页

作者： Tengfei ZHOU Yaoqi ZHOU Nina SФAGER Paul Martin HOLM Zhenkai ZHANG Jun WANG Zhao LIANG Hongyu MU Yanjun CHENG Feifei LIU Miao WANG Yue ZHANG Hui ZHANG Yangjian GU Shihui DONG Hanjie ZHAO Manjie LI Yang CHEN Yanzi LIU School of Geosciences China University of Petroleum(East China)Qingdao 266580China Department of Geosciences and Natural Resource Management University of CopenhagenCopenhagen-K 1350Denmark Shandong Provincial Key Laboratory of Deep Oil&Gas China University of Petroleum(East China)Qingdao 266580China Shaanxi Center of Mineral Geological Survey Shaanxi Institute of Geological SurveyXi'an 710068China School of Earth Sciences Yunnan UniversityKunming 650500China Department of Science and Technology Hebei GEO UniversityShijiazhuang 050031China College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China School of Architectural Engineering Binzhou UniversityBinzhou 256500China Research Institute of Petroleum Exploration and Development Shengli Oilfield CompanySINOPECDongying 257015China Key Laboratory of Geological Safety of Coastal Urban Underground Space Ministry of Natural ResourcesQingdao Geo-Engineering Surveying InstituteQingdao 266101China

The Lingshan Island scientific drill confirms that two episodes(Laiyang period and Qingshan period) of rifting developed in the central Sulu orogenic belt(SOB) in Late Mesozoic. With a set of methods including fieldwork, drilling, core logging, zircon U-Pb dating and whole rock geochemistry applied, the age, the depositional sequence and the deep dynamic mechanisms of rift evolution were unraveled. The stratigraphic sequence of the Laiyang-Qingshan groups on Lingshan Island was composed of two different rifting sequences:(1) Laiyang group(147–125 Ma), which consists of deep-water gravity flow deposits with interlayers of intermediate volcanic rocks;and(2) Lower Qingshan group(125–119 Ma), which unconformably overlies the former sequence and contains subaerial volcanic deposits and terrestrial deposits. The tectonic environment changed during the evolution of these two episodes of rifting: the rift was in a NNW-SSE extensional environment in the Laiyang period and showed the typical passive rifting character that “lithospheric extension and rifting preceded volcanism”. The passive rifting period was ended by a short WNW-ESE compression at about 125 Ma. After that, the tectonic environment transferred to a strong NW-SE extensional environment and the rifting evolved into a volcanic arc basin in the Qingshan period. The igneous rocks are shoshonitic to high-K calc-alkaline trachyandesites to trachytes with a few intercalated lamprophyres and a *** geochemical characteristics of the igneous rocks indicate that they are mantle-derived melts with a metasomatized mantle source and/or crustal contamination. In addition, an increased thinning of the lithosphere happened during the rifting *** low-angle subduction of the Paleo-Pacific plate in the Jurassic weakened the thickened SOB lithospheric mantle. The rollback of the subducting plate started in late Jurassic to early Cretaceous, and the SOB lithospheric mantle was delaminated synchronously because of t

关键词： Sulu orogenic belt Lingshan Island Late Mesozoic Rifting Slab subduction Basin dynamics

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sinopec Encouraged for Oil and Gas Exploration

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China Oil & Gas 2003年第4期10卷 25-25页

作者： Li Qiuju, Xianhe Oil Production Plant of Shengli Petroleum group Corperation Ltd. Xianhe Oil Production Plant of Shengli Petroleum group Corperation Ltd.

A total of 27 wells have been so far drilled in Zhuanghai area of sinopecShengli Oil Field with the proven oil in place accumulated to 45.46 million tons. It is hopeful toprove another 50 million tons of oil in place ... 详细信息

关键词： sinopec 油气勘探胜利油田中国

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