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Applied Geophysics 2020年第5期17卷 687-699,900,901页

作者： Tian Yu-Kun Zhou Hui Ma Yan-Yan Li Juan The Key Laboratory of unconventional oil and gas geology Oil and Gas resources Survey CenterChina Geological SurveyBeijing 100083China

The time-frequency domain electromagnetic(TFEM)sounding technique can directly detect oil and gas characteristics through anomalies in resistivity and *** recent years,it has made some breakthroughs in hydrocarbon *** was applied to predict the petroliferous property of the Ili *** accordance with the geological structure characteristics of the study area,a two-dimensional layered medium model was constructed and forward modeling was *** used the forward-modeling results to guide fi eld construction and ensure the quality of the fi eld data *** used the model inversion results to identify and distinguish the resolution of the geoelectric information and provide a reliable basis for data *** the basis of our results,key technologies such as 2D resistivity tomography imaging inversion and polarimetric constrained inversion were developed,and we obtained abundant geological and geophysical *** characteristics of the TFEM anomalies of the hydrocarbon reservoirs in the Ili Basin were summarized through an analysis of the electrical logging data in the study ***,the oil-gas properties of the Permian and Triassic layers were predicted,and the next favorable exploration targets were optimized.

关键词： Time–Frequency Domain Electromagnetic Hydrocarbon Detection Polarizability Anomaly Favorable Area Prediction

Volcanic Facies and Their Reservoirs Characteristics in Eastern China Basins

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Journal of Earth Science 2013年第6期24卷 935-946页

作者：金春爽潘雯丽乔德武 oil & gas Survey China Geological Survey Research Institute of Petroleum Exploration & Development PetroChina Strategic Research center of oil & gas resources Ministry of Land & Resources

In these years, with more and more volcanic oil and gas fields being discovered and de- veloped, the volcanic rocks reveal a great petroleum potential in the eastern basins of China. There are five volcanic facies identified in the study area, which include volcanic conduit facies, explosive facies, effusive facies, extrusive facies, and volcanogenic sedimentary facies. The subaerial eruption usually happened in Mesozoic and Paleocene, and subaquatic eruption in Eocene. The upper subfacies and top autoclastic brecciation of effusive facies of subaquatic volcanic rocks and pyroclastic flow subfacies of explosive facies of subaerial volcanic rocks are the most favorable volcanic reservoirs. The intermittent belt formed between two times of volcanic eruptions is most effective for reservoirs both in subaquatic and subaerial volcanic rocks. Their main porosity types are interclast porosity, interflow laminar po- rosity, vesicular and gas pipes porosity, intercrystalline sieve of moldic porosity, secondary dissolution porosity, and tectonic fracture. Developed between pre-emplacement stage and final cooling, the pri- mary porosity may lead to high porosity and permeability, and the secondary porosity usually devel- oped upon them. The porosity of volcanic rocks was less influenced by the compaction and the burial depth.

关键词： volcanic facies volcanic reservoir porosity eastern China.

Controlling Factors on Organic Matter Accumulation of Marine Shale across the Ordovician–Silurian Transition in South China: Constraints from Trace-Element Geochemistry

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Journal of Earth Science 2021年第4期32卷 887-900页

作者： Zhen Qiu Huifei Tao Bin Lu Zhenhong Chen Songtao Wu Hanlin Liu Junli Qiu Research Institute of Petroleum Exploration and Development CNPCBeijing 100083China National Energy Shale gas Research and Development(Experiment)center Langfang 065007China oil and gas Research center Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Key Laboratory of oil and gas Reservoirs CNPCBeijing 100083China National Energy Tight oil and gas R&D center Beijing 100083China Institute of oil and gas Peking UniversityBeijing 100871China

In recent years,significant progress in shale gas exploration has been achieved in the Upper Ordovician(Wufeng Formation)–Lower Silurian(Longmaxi Formation)shales in the Upper Yangtze area,South *** many studies have been carried out on the Upper Ordovician–Lower Silurian shales,the controlling factors causing organic matter accumulation of these shales remain *** study uses trace-element geochemistry and sedimentological methods to evaluate terrigenous input,redox conditions and primary productivity to explore the mechanisms of organic matter *** variation of terrigenous fraction elements(Al,Th and Sc)concentrations reflect a mixed influence of sea-level change and *** sea-level of the Upper Yangtze Sea went through two cycles of transgression to regression during the Ordovician–Silurian *** Linxiang Formation,Kuanyinchiao Bed and the upper part of Longmaxi Formation developed during the periods of regression,whereas the Wufeng Formation and the lower part of the Longmaxi Formation developed during the periods of *** paleo-productivity indexes of TOC content,ratios of Ba/Al and P/Al,and redox conditions proxies of Mo concentration,ratios of U/Th and V/Cr generally display similar variation patterns with respect to the sea-level *** TOC contents and Ba/Al and P/Al ratios indicate the paleo-productivity was high on the sea surface,as shown by relatively good positive correlations between Th ***,and Sc *** indicates that the paleo-productivity was controlled by the nutrients input through *** good positive correlations between redox conditions indexes(U/Th and V/Cr ratios)with TOC content reflects reductive preservation conditions(anoxic to euxinic),thus implying they were an important controlling factor for organic matter ***,redox conditions were closely associated with sea level change and organic matter ***,the sea-lev

关键词： productivity redox sea-level change shale gas Sichuan Basin Wufeng-Longmaxi shale

The detection, extraction and parameter estimation of extreme-mass-ratio inspirals with deep learning

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 86-96页

作者： Qianyun Yun Wen-Biao Han Yi-Yang Guo He Wang Minghui Du Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Shanghai Astronomical Observatory Chinese Academy of Sciences School of Physics and Astronomy Shanghai Jiao Tong University School of Astronomy and Space Science University of Chinese Academy of Sciences Taiji Laboratory for Gravitational Wave Universe (Beijing/Hangzhou) University of Chinese Academy of Sciences lanzhou center for Theoretical Physics Key Laboratory of Theoretical Physics of Gansu Province Key Laboratory of Quantum Theory and Applications of MoE Lanzhou University Institute of Theoretical Physics & Research center of Gravitation Lanzhou University International Centre for Theoretical Physics Asia-Pacific (ICTP-AP) University of Chinese Academy of Sciences (UCAS) center for Gravitational Wave Experiment National Microgravity Laboratory Institute of Mechanics Chinese Academy of Sciences

One of the primary goals of space-borne gravitational wave detectors is to detect and analyze extreme-mass-ratio inspirals(EMRIs). This task is particularly challenging because EMRI signals are complex, lengthy, and faint. In this work, we introduce a2-layer convolutional neural network(CNN) approach to detect EMRI signals for space-borne detectors, achieving a true positive rate(TPR) of 96.9% at a 1% false positive rate(FPR) for signal-to-noise ratio(SNR) from 50 to 100. Especially, the key intrinsic parameters of EMRIs such as the mass, spin of the supermassive black hole(SMBH) and the initial eccentricity of the orbit can also be inferred directly by employing a neural network. The mass and spin of the SMBH can be determined at 99% and 92% respectively. This will greatly reduce the parameter spaces and computing cost for the following Bayesian parameter *** model also has a low dependency on the accuracy of the waveform model. This study underscores the potential of deep learning methods in EMRI data analysis, enabling the rapid detection of EMRI signals and efficient parameter estimation.

关键词： gravitational wave EMRIs deep-learing

Evaluation of the in-place adsorbed gas content of organic-rich shales using wireline logging data: a new method and its application

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Frontiers of Earth Science 2021年第2期15卷 301-309页

作者： Xin NIE Yu WAN Da GAO Chaomo ZHANG Zhansong ZHANG Key Laboratory of Exploration Technologies for oil and gas resources Yangtze UniversityWuhan 430100China Cooperative Innovation center of Unconventional oil and gas Yangtze UniversityWuhan 430100China

Adsorbed gas content is an important parameter in shale gas reservoir evaluations,and its common calculation method is based on core ***,in different areas,the correlations between the adsorbed gas content and well logging data might ***,a model developed for one specific area cannot be considered *** on previous studies,we studied the relationships between temperature,TOC,organic matter maturity and adsorbed gas content and revealed qualitative equations between these ***,the equations were combined to establish a new adsorbed gas content calculation model based on depth and total organic carbon(TOC).This model can be used to estimate the adsorbed gas content using only conventional well logging data when core experimental data are rare or even *** method was applied in the southern Sichuan Basin,and the adsorbed gas content results agree well with those calculated using the Langmuir isothermal model and core experimental *** actual data processing results show that the adsorbed gas content model is reliable.

关键词： shale reservoir adsorbed gas well logging temperature pressure TOC depth

A surface engineering strategy for the stabilization of zinc metal anodes with montmorillonite layers toward long-life rechargeable aqueous zinc ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 94-105页

作者： Wenbo Wang Ruifeng Xu Xu Zhang Peiyu Wang Bao Yang Bingjun Yang Juan Yang Kailimai Su Pengjun Ma Yanan Deng Xianfeng Fan Wanjun Chen Key Laboratory for Electronic Materials College of Electrical Engineering Northwest Minzu University Resource Chemistry and Energy Materials Research center State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Materials and Processes School of Engineering University of Edinburgh

Rechargeable aqueous zinc-ion batteries （AZIBs） exhibit appreciable potential in the domain of electrochemical energy ***,there are serious challenges for AZIBs,for instance zinc dendrite growth,hydrogen evolution reaction （HER）,and corrosion side ***,we propose a surface engineering modification strategy for coating the montmorillonite （MMT） layer onto the surface of the Zn anode to tackle these issues,thereby achieving high cycling stability for rechargeable *** results reveal that the MMT layer on the surface of the Zn anode is able to provide ordered zincophilic channels for zinc ions migration,facilitating the reaction kinetics of zinc *** functional theory（DFT） calculations and water contact angle （CA） tests prove that MMT@Zn anode exhibits superior adsorption capacity for Zn2+and better hydrophobicity than the bare Zn anode,thereby achieving excellent cycling ***,the MMT@Zn||MMT@Zn symmetric cell holds the stable cycling over 5600 h at 0.5 mA cm-2and 0.125 m A h cm-2,even exceeding 1800 h long cycling under harsh conditions of 5 m A cm-2and 1.25 m A h *** MMT@Zn||V2O5full cell reaches over 3000 cycles at 2 A g-1with excellent rate ***,this surface engineering modification strategy for enhancing the electrochemical performance of AZIBs represents a promising application.

关键词： Surface engineering strategy Montmorillonite layer Protection mechanism of Zn anode Cycling stability Aqueous zinc ion batteries

Application of Stable Strontium Isotope Geochemistry and Fluid Inclusion Microthermometry to Studies of Dolomitization of the Deeply Buried Cambrian Carbonate Successions in West-Central Tarim Basin, NW China

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Journal of Earth Science 2019年第1期30卷 176-193页

作者： Ngong Roger Ngia Mingyi Hu Da Gao Zhonggui Hu Chun-Yan Sun Sedimentary Basin Research center Yangtze University Hubei Cooperative Innovation center for Unconventional oil and gas Key Laboratory of Exploration Technologies for oil and gas resources of the Ministry of Education Yangtze University Department of Geology University of Buea

Detailed petrographic,geochemical(O-C-Sr isotopes)and fluid inclusion studies of the deeply buried Cambrian carbonates in the West-central Tarim Basin revealed three types of crystalline dolomites(fine-crystalline,nonplanar-a(s),dolomite(RD1),fine-to medium-crystalline,planar-e(s)dolomite(RD2),and medium-to coarse-crystalline,nonplanar-a dolomite(RD3)),medium-to coarsecrystalline,nonplanar-a saddle dolomite cement(CD)and early and later-stage calcite *** occurrence of RD1 along low-amplitude stylolites points to link with pressure dissolution by which minor Mg ions were likely released for replacive dolomitization during early-to intermediate-burial seawater *** increasing crystal sizes of RD2 and RD3 with irregular overgrowth rims suggests intense recrystallization and replacement upon the RD1 or remaining precursor limestones by dolomitizing fluids during late intermediate burial *** overlap ofδ^(18)O,δ^(13)C and ^(87)Sr/^(86)Sr values of RD1-RD3 and CD dolomite with coeval seawater values,suggests that the principal dolomitizing fluids that precipitated these dolomites was connate(Cambrian)seawater preserved in the host limestones/*** high ^(87)Sr/^(86)Sr ratios suggest influx of radiogenic strontium into the Cambrian *** regimes of fluid flow are recognized in the study area:firstly,influx of magnesium-rich higher-temperature basinal brines along deep-seated faults/fractures,resulting in cementation by CD ***,the incursion of meteoric waters,mixing with ascending highertemperature basinal brines,and an increase in Ca^(2+)/Mg^(2+)ratio in the fluids probably results in the precipitation of calcite cement in vugs and fractures.

关键词： Cambrian dolomites C-O-Sr isotopes burial dolomitization West-central Tarim Basin fluid flow regimes

A Singular Perturbation Method for Parametric Investigation on J-lay Installation of Deepwater Pipelines

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China Ocean Engineering 2013年第6期27卷 751-766页

作者：王琴段梦兰李海明张庆元 Offshore oil/gas Research center China University of Petroleum China National Offshore oil Corporation

The maximum bending moment or curvature in the neighborhood of the touch down point （TDP） and the maximum tension at the top are two key parameters to be controlled during deepwater J-lay installation in order to ensure the safety of the pipe-laying operation and the normal operation of the pipelines. In this paper, the non-linear governing differential equation for getting the two parameters during J-lay installation is proposed and solved by use of singular perturbation technique, from which the asymptotic expression of stiffened catenary is obtained and the theoretical expression of its static geometric configuration as well as axial tension and bending moment is derived. Finite element results are applied to verify this method. Parametric investigation is conducted to analyze the influences of the seabed slope, unit weight, flexural stiffness, water depth, and the pipe-laying tower angle on the maximum tension and moment of pipeline by this method, and the results show how to control the installation process by changing individual parameters.

关键词： deepwater touch down point singular perturbation technique non-linear governing differential equation J-lay of pipeline geometric nonlinearity stiffened catenary

Deciphering the role of ultra-low-loaded rhodium in NiFe-MIL-53 for superior oxygen evolution reaction

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Journal of Energy Chemistry 2025年第1期100卷 77-86页

作者： Jinzhi Jia Jinhua Zhang Kailu Guo Lanyue Zhang Gening Du Hao You Junfeng Huang Mudong Tu Hua Li Yong Peng Wei Dou Cailing Xu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering School of Materials and Energy Lanzhou University College of Chemistry and Chemical Engineering Luoyang Normal University

Designing highly active and stable electrocatalysts of oxygen evolution reaction （OER） is one of the crucial *** this study,a novel OER electrocatalyst,NiFe-MIL-53 modified with ultra-low rhodium（Rh@NiFe-MIL-53）,is successfully prepared via the hydrothermal ***-situ Raman spectroscopy and electrochemical impedance spectroscopy reveal that the doped Rh accelerates the phase transformation of NiFe-MIL-53 and the in-situ formed Rh@NiFeOOH is the actual active *** importantly,the enhanced reversibility of electrochemical reconstruction between NiFeOOH and NiFe（OH）2after doping Rh is beneficial for improving the electrochemical stability of the catalyst.X-ray photoelectron spectroscopy spectra show the strong electronic interaction between single-atom Rh and Ni/Fe in Rh@***,theoretical calculations confirm that the integration of single-atom Rh into the NiFeOOH successfully reduces the band gap,regulates the d-band center （εd）,accelerates the charge transfer,and optimizes the adsorption behavior of oxygen-containing intermediates,thereby lowering the energy barrier of rate-determining ***,the optimized Rh@NiFe-MIL-53 exhibits excellent OER activity （240 mV） with a small Tafel slope of 48.2 mV dec-1and long-term durability (over1270 h at 10 m A cm-2and 110 h at 200 mA cm-2).This work presents a new perspective on designing highly efficient OER electrocatalysts.

关键词： NiFe-MIL-53 Rh Electrochemical reconstruction Catalytic mechanism Oxygen evolution reaction

Quantitative Analysis Model and Application of the Hydrocarbon Distribution Threshold

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Acta Geologica Sinica(English Edition) 2013年第1期87卷 232-242页

作者： JIANG Fujie PANG Xiongqi GUO Jigang State Key Laboratory of oil & gas resources and Prospecting China University of Petroleum Basin and Reservoir Research center China University of Petroleum

Hydrocarbon source rock obviously controls the formation and distribution of hydrocarbon reservoirs. Based on the geological concept of ＂source control theory＂, the concept of a hydrocarbon distribution threshold was put forward. This means the maximum range for hydrocarbon controlled by the source rock conditions to migrate in the hydrocarbon basins. Three quantitative analysis models are proposed on this basis, namely the hydrocarbon accumulation probability, maximum hydrocarbon scale threshold and reserve distribution probability, which respectively refer to the probability of forming a hydrocarbon reservoir, the possible maximum scale of the hydrocarbon reservoir and the percentage of reserve distribution in a certain area within the hydrocarbon distribution threshold. Statistical analysis on 539 hydrocarbon reservoirs discovered in 28 hydrocarbon source kitchens from seven sedimentary basins and sags of eastern China shows the maximum reservoir scale possibly formed in the hydrocarbon basin, hydrocarbon accumulation probability and oil and gas reserve distribution probability are all controlled by the characteristics of the hydrocarbon source rock. Generally, as the distances from the hydrocarbon source rock center and hydrocarbon discharge boundary get longer and the hydrocarbon discharge intensity of hydrocarbon source rock center gets smaller, there will be lower probability of hydrocarbon accumulation. Corresponding quantitative models are established based on single factor statistics and multivariate analysis. Practical application in the Jiyang Depression shows that the prediction from the quantitative analysis model for the hydrocarbon distribution threshold agree well with the actual exploration results, indicating that the quantitative analysis model is likely to be a feasible tool.

关键词： source control theory scale threshold distribution threshold Jiyang Depression,hydrocarbon discharge threshold probability