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Solid particle size characterization by a high-frequency collision response in pneumatic particulate flow

Particuology 2024年第3期86卷 39-54页

作者： Kai Wang Yichen Li Ziang Chang Min Qin Guangming Fu Bangtang Yin Gang Wang jiaqi Tian School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580China Key Laboratory of Unconventional oil&gas Development China University of Petroleum(East China)Ministry of EducationQingdao266580China National Engineering research center of oil&gas Drilling and Completion Technology Qingdao266580China Shock and Vibration of Engineering Materials and structures Key Lab ofSichuan Province Southwest University of Science and TechnologyMianyang621000China

A novel triaxial vibration method is developed for the real-time characterization of the solid particle size distribution(PsD)in pneumatic particulate flow,which is critical for chemical *** this work,the particle-wall collision and friction behaviours were analysed by the time-domain statistical and timefrequency joint methods to narrow the high-frequency response range by the initial experiment of free fall for a single particle,interparticle,and multiple ***,verification experiments of PSD characterization in pneumatic flow were ***,the quantitative triaxial energy response model that considers the particle size,shape,and mass factors were ***,a good agreement of the particle number identification was found between the triaxial vibration energy and mean particle size of 150-550μ***,the performance with the best accuracy was focused on a range of 42-43 kHz in the x-axis and z-axis and 36.8-38.8 kHz in the ***,the individual particle energy was inversely analysed by the triaxial vibration response within the optimized frequency bands,and the PSD was characterized in real-time by a low error rate,that is,5.2% from the XZ-axis direction of sand(42-43 kHz)and 5.6% from the XYZ-axis of glass(30.9-33.9 kHz,46.2-47.2 kHz,38.3-41.3 kHz for each axis response).Therefore,this research complements the existing approaches for PsD characterization in particulate multiphase flow.

关键词： Solid particulate flow Triaxial vibration High-frequency response Particle wall Particle size distribution

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Rheological study of methane gas hydrates in the presence of micron-sized sand particles

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Chinese Journal of Chemical Engineering 2024年第6期70卷 149-161页

作者： Bohui Shi Shangfei Song Yuchuan Chen Shunkang Fu Lihao Liu Xinyao Yang Haihao Wu Guangjin Chen Jing Gong National Engineering research center of oil and gas Pipeline Transportation Safety MOE Key Laboratory of Petroleum EngineeringBeijing Key Laboratory of Urban Oil and Gas Distribution TechnologyChina University of Petroleum-BeijingBeijing 102249China China's oil and gas Exploration and Development Company(CNODC) Beijing 100034China China National Petroleum Corporation Mozambique LDA MaputoMozambique PipeChina West East Pipeline Company Shanghai 200122China

Natural gas hydrates,intricate crystalline structures formed by water molecules and small gas molecules,have emerged as a significant and globally impactful clean energy ***,their commercial exploitation faces challenges,particularly operational disruptions caused by sand-related *** the rheological properties of hydrate slurry,especially in the presence of micron-sized sand particles,is imperative for ensuring the flow assurance of subsea hydrate *** study extensively investigates the rheological properties of sand-containing hydrate *** findings reveal that these slurries exhibit non-Newtonian fluid characteristics,including yield stress,thixotropy,and shear-thinning ***-like elastic features are observed in sand-containing hydrate slurries before yielding,transitioning to viscous behavior after *** with a minimal amount of sand,both static yield stress and yield strain experience substantial changes,correlating with the increase in sand *** research conclusively establishes the thixotropic nature of sand-hydrate slurries,where the viscosity decay rate is directly influenced by the shear *** insights aim to contribute comprehensively to the development of effective flow assurance strategies,ensuring the safe and stable operation of subsea hydrate exploitation.

关键词： Natural gas hydrate production Sand-containing hydrate slurries Yield stress Thixotropy Shear-thinning behavior

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Imaging the western boundary of the Sichuan Craton from multiple geophysical observations

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Journal of Earth Science 2024年

作者： Qihang Yin Xi Xu Xiaodong Yang Xuhua Shi Lei Wu Andrew V.Zuza Liu Yang Hefeng Tian Yuanhai Shu Shufeng Yang Nevada Bureau of Mines and Geology， University of Nevada China Aero Geophysical Survey and Remote Sensing center for Natural Resources，China Geological Survey School of Earth Sciences， Zhejiang University research center for structures in oil and gas bearing basins， Ministry of Education Key Laboratory of Ocean and Marginal Sea Geology， South China Sea Institute of Oceanology， Innovation Academy of South China Sea Ecology and Environmental Engineering， Chinese Academy of Sciences School of Mechanical and Electrical Engineering， Hubei Open University

The boundary between the cratonic and orogenic lithospheres is one of the most significant seismogenic zones characterized by strong lithospheric deformation. As the essential tectonic block bounding the eastern Tibetan Plateau， the Sichuan Craton (SCC) resists the eastward escape of Plateau’s crustal materials， resulting in the uplift of the Songpan-Ganzi Block (SGB) and the crustal deformation of the Longmenshan tectonic belt (LMTB). To uncover the compressional structures and deformational mode of the LMTB and SCC， it is crucial to determine the precise location and geometry of the western boundary of the SCC. To address this issue， the lithospheric properties of the obduction SGB， the underthrusting SCC， and the LMTB were analyzed using a series of geophysical data， including seismic reflection profiles， magnetotellurics， aeromagnetics， gravity， and seismic tomography. The crust of the SGB is characterized by low magnetism， low seismic velocity， low resistivity and low Bouguer gravity， while that of the SCC features non-uniform high magnetism， high seismic velocity， high resistivity and high Bouguer gravity. The LMTB， as the boundary between the SGB and SCC， shows the geophysical characteristics similar to the SCC along the southern and central segments. The integration of all these geophysical observations suggests that the SCC’s western boundary follows the Yingxiu-Beichuan fault along the northern segment， without obvious underthrust. However， this boundary is located west of the Wenchuan-Maoxian fault zone along the southern and central segments， with distinct westward wedging/underthrusting. The irregular geometry of the SCC’s western boundary can further explain the variation in structural deformation along the LMTB. By comparing the differences in crustal thickness and lithospheric strength between the SGB and SCC， this study suggests that the varying crustal strength between tectonic blocks may be the controlling factor for the irregular geometry of the

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Cratonic Strike-Slip Faults in the Southwest Ordos Basin(Central China)， and Their Influence on Hydrocarbon Accumulation

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Journal of Earth Science 2024年

作者： Zhao Wang Lei Huang Chiyang Liu Faqi He Huichong Jia Fubin Wang Peng Yang Fei Yang Xiaowei Li Sixuan Wu State Key Laboratory of Continental Dynamics， Northwest University Institute of oil and gas Basin， Northwest University Xi'an Sinopec North China oil and gas Branch Geology and Geophysics Program， Missouri University of Science and Technology Exploration and Development research Institute， PetroChina Southwest oil & gasfield Company

Cratonic strike-slip fault， despite its potentially significant influence on hydrocarbon accumulation， has attracted limited attention. This study investigates the geometry and kinematics of the cratonic strike-slip faults newly identified within the southwest Ordos Basin， Central China， based on 3D seismic reflection data. We recognized three dominant sets of faults with strike-slip nature trending respectively in NW， ENE， and N–S directions in the study area. These faults exhibit a stratified style characterized by distinct trends across various strata， with ENE-trending faults in the Mesozoic strata (Area A)， N-S-trending faults in the Paleozoic strata， and vertically discontinuous structures in the Mesozoic and Paleozoic strata (NW-trending Yudu fault zone and ENE-trending Yulinzi and Zaosheng fault zones). The contrasting kinematics of strike-slip faults observed in deep and shallow layers further confirm such fault stratification， suggesting isolated fault evolution within respective layers. The quantified fault parameters obtained from seismic reflection data， including length， width and displacement， suggest that these cratonic strike-slip faults in the Ordos Basin are immature. Comparisons with strike-slip faults in other cratonic basins and active tectonic settings suggest that the strike-slip faults within the Ordos Basin are representative of cratonic strike-slip faults， characterized by low maturity and a stratified faulting style， and they have special propagation mechanism (preferentially occurring in the shallow strata of the interior of the basin). Moreover， these fault characteristics have dual impacts on petroleum accumulation in the southwest Ordos Basin. The low faulty maturity makes the fault zone a special hydrocarbon reservoir (fault-fracture volume) in tight sandstone， while the stratified faulting style vertically separates the Mesozoic and Paleozoic petroleum systems in the southwest Ordos Basin. Our findings therefore contribute significa

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Formation mechanism of fault accommodation zones under combined stress in graben basin:Implications from geomechanical modeling

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Petroleum Science 2024年第1期21卷 54-76页

作者： Qi-Qiang Ren Jin-Liang Gao Rong-Tao Jiang Jin Wang Meng-Ping Li Jian-Wei Feng Institute of Sedimentary Geology Chengdu University of TechnologyChengdu 610059SichuanChina PetroChina research Institute of Petroleum Exploration and Development Beijing100083China Jianghan oilfield oil and gas Production Capacity Construction Management center Chongqing408000China Sinopec Chongqing Fuling Shale gas Exploration and Development Company Chongqing408000China College of Energy Chengdu University of TechnologyChengdu 610059SichuanChina School of Geoscience China University of Petroleum(East China)Qingdao 266580ShandongChina

A fault accommodation zone is a type of structure that is defined as regulating displacement and strain between faults *** numbers of fault accommodation zones are being identified in graben basins,indicating the potential exploration target and petroleum accumulation *** study aims to analyze the formation mechanism and development of fault accommodation zones under combined stress by a numerical simulation method considering geomechanical *** three-dimensional(3-D)seismic interpretation and fractal dimension method,exampled with the Dongxin fault zone,the fault activity and fault combination pattern were conducted to quantitatively characterize the activity difference in fault accommodation *** with mechanical experiment test,a geomehcanical model was established for fault accommodation zones in a graben *** the paleostress numerical simulations and structural physical simulation experiment,the developmental characteristics and genetic mechanism of fault accommodation zones were *** by multi movements and combined stresses,three significant tectonic evolution stages of the Dongxing Fault Zone(DXFZ)were distinguished:During the E_(s)^(3)sedimentary period,the large difference in the stress,strain,and rupture distribution in various faults were significant,and this stage was the key generation period for the prototype of the DXFZ,including the FAZ between large-scale *** the E_(s)^(2)sedimentary period,the EW-trending symmetric with opposite dipping normal faults and the NE-SW trending faults with large scale were furtherly *** junction area of two secondary normal faults were prone to be ruptured,performing significant period for inheriting and developing characteristics of fault accommodation *** the Es1 sedimentary period,the high-order faults in the DXFZ exhibited the obvious fault depressions and strike-slip activity,and the fault accommodation zones were

关键词： Fault accommodation zone Graben basin Fault activity Tectonic physical simulation experiment Finite element numerical simulation Dongxin fault zone

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Evolution of Cenozoic sedimentary architecture in Central and Southern South China Sea basins

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Journal of Palaeogeography 2024年第1期13卷 35-53页

作者： Wu Tang Xiao-Jun Xie Yi-Bo Wang Lian-Qiao Xiong Jia Guo Xin Li China National Offshore oil Corporation research Institute Beijing 100028China

The Central and Southern South China Sea(CSSCS) has a complex tectonic dynamic background and abundant oil and gas resources, which has always been a hot topic of academic and industrial ***, systematic analyses are still lacking regarding its sediment filling structure and evolution, mostly due to limited borehole penetration and poor quality of seismic reflection data for deeply buried sequences. No consensus has been reached yet on the sedimentary infilling processes, which impeded the reconstruction of the palaeogeography of Southeast Asia and the oil-and-gas exploration undertakings. Here, we illustrate the Cenozoic sedimentary evolution of the CSSCS region by synthesizing relevant data from previous literature and our own observations and displaying the evolution of depositional systems in sequential reconstructions. Besides, the controlling factors of preferred sedimentary scenarios in the CSSCS incorporate the latest interpretations of the spreading of South China Sea(SCS) as well as the demise of the hypothetical Proto-South China Sea(PSCS). The results show that there are three types of sedimentary basins in the CSSCS(foreland,strike-slip, and rift basins) with different sedimentary filling structures. The foreland basins formed a depositional pattern of ‘transition from deep water to shallow water environments', dominated by deep-water depositional systems which were formed before the Early Oligocene with submarine fans developed. Later,the foreland basins were gradually dominated by shallow-water depositional systems with deltas and shallow marine facies. The strike-slip basins showed the depositional architecture of ‘transition from lake to marine environments', i.e. the basins were dominated by lacustrine deposits during the Eocene and evolved into the marine depositional environment since Oligocene with delta developed in the western part of the basin. The depositional evolution of rift basins illustrated the characteristics of 'transiti

关键词： Central and Southern South China Sea Sedimentary filling Main controlling factors Proto-South China Sea South China Sea

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The Exhumation History of North Qaidam Thrust Belt Constrained by Apatite Fission Track Thermochronology:Implication for the Evolution of the Tibetan Plateau

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Acta Geologica Sinica(English Edition) 2016年第3期90卷 870-883页

作者： CHENG Xiaogan LIN Xiubin WU Lei CHEN Hanlin XIAO Ancheng GONG Junfeng ZHANG Fengqi YANG Shufeng School of Earth Sciences Zhejiang UniversityHangzhou 310027ZhejiangChina research center for structures in oil-and gas-bearing basins Ministry of EducationHangzhou 310027ZhejiangChina

Determining the spatio-temporal distribution of the deformation tied to the India-Eurasian convergence and the impact of pre-existing weaknesses on the Cenozoic crustal deformation is significant for understanding how the convergence between India and Eurasia contributed to the development of the Tibetan Plateau. The exhumation history of the northeastern Tibetan Plateau was addressed in this research using a new apatite fission track （AFT） study in the North Qaidam thrust belt （NQTB）. Three granite samples collected from the Qaidam Shan pluton in the north tied to the Qaidam Shan thrust, with AFT ages clustering in the Eocene to Miocene. The other thirteen samples obtained from the Luliang Shan and Yuka plutons in the south related to the Luliang Shan thrust and they have showed predominantly the Cretaceous AFT ages. Related thermal history modeling based on grain ages and track lengths indicates rapid cooling events during the Eocene-early Oligocene and since late Miocene within the Qaidam Shan, in contrast to those in the Cretaceous and since the Oligocene-Miocene in the Luliang Shan and Yuka region. The results, combined with published the Cretaceous thermochronological ages in the Qaidam Shan region, suggest that the NQTB had undergo rapid exhumation during the accretions along the southern Asian Andean-type margin prior to the India-Eurasian collision. The Cenozoic deformation initially took place in the North Qaidam thrust belt by the Eocene, which is consistent with the recent claim that the deformation of the northeastern Tibetan Plateau initiated in the Eocene as a response to continental collision between India and Eurasia. The immediate deformation responding to the collision is tentatively attributed to the preexisting weaknesses of the lithosphere, and therefore the deformation of the northeastern Tibetan Plateau should be regarded as a boundary-condition-dependent process.

关键词： apatite fission track Qaidam Shan Luliang Shan North Qaidam thrust belt Tibetan plateau

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Structural features in the mid-southern section of the Kyushu–Palau Ridge based on satellite altimetry gravity anomaly

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Acta Oceanologica Sinica 2024年第4期43卷 50-60页

作者： Feifei Zhang Dingding Wang Xiaolin Ji Fanghui Hou Yuan Yang Wanyin Wang School of Geological Engineering and Geomatics Chang’an UniversityXi’an 710054China Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China Information and Navigation College Air Force Engineering UniversityXi’an 710077China National Engineering research center of Offshore oil and gas Exploration Beijing 100028China Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China

The Kyushu–Palau Ridge(KPR),an anti-S-shaped submarine highland at the center of the Philippine Sea Plate(PSP),is considered the residual arc of the Izu–Bonin–Mariana Island Arc,which retains key information about the cessation of the Western Philippine Basin(WPB)expansion and the Parece Vela Basin(PVB)***,using the new generation of satellite altimetry gravity data,high-precision seafloor topography data,and newly acquired ship-borne gravity data,the topographic and gravity characteristics of the KPR mid-southern section and adjacent region are *** distribution characteristics of the faults were delineated using the normalized vertical derivative–total horizontal derivative method(NVDR-THDR)and the minimum curvature potential field separation *** Moho depth and crustal thickness were inverted using the rapid inversion method for a double-interface model with depth *** on these results,the crust structure features in the KPR mid-southern section,and the“triangular”structure geological significance where the KPR and Central Basin Rift(CBR)of the WPB intersect are *** KPR crustal thickness is approximately 6–16 km,with a distinct discontinuity that is slightly thicker than the normal oceanic *** KPR mid-southern section crust structure was divided into four segments(S1–S4)from north to south,formed by the CBR eastward extension joint action and clockwise rotation of the PVB expansion axis and the Mindanao fault zone blocking effect.

关键词： structural features satellite altimetry gravity data Kyushu-Palau Ridge Central Basin Rift faults Moho depth

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The Ductile Deformation Characteristics of Caledonian Intracontinental Orogeny in the Northeastern Jiangshan-Shaoxing Tectonic Zone:Insights from Magnetic Fabric Study and Its Geodynamic Implication

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Acta Geologica Sinica(English Edition) 2016年第1期90卷 75-87页

作者： GONG Genhui CHEN Hanlin WANG Fang LIN Xiubin MENG Lifeng Departement of Earth Sciences Zhejiang University research center of structures in oil and gas bearing Basin Ministry of Education

The Jiangshan-Shaoxing tectonic zone was the northeastern boundary between the Yangtze Block and the Cathaysia Block during the Neoproterozoic and was an intracontinental orogenic belt during late of the early Paleozoic. In this tectonic zone, there develops a lot of mylonite underwent strong ductile deformation and schist, gneiss, and amphibolite with medium and high grade metamorphism which was formed during the late of early Paleozoic. The research of geometry and kinematic of ductile deformation in Jiangshan-Shaoxing tectonic zone is very important to reveal the tectonic process of intracontinental orogeny. This paper uses the anisotropy of magnetic susceptibility （AMS） to determine the ductile deformation geometry and kinematic of Jiangshan-Shaoxing tectonic zone combing with the field survey. In this study, 190 specimens of 19 locations and 221 specimens of 23 locations from Wangjiazhai section and Lipu-Sizhai section were analyzed. The magnetic foliation over magnetic lineation in both Wangjiazhai and Lipu-Sizhai sections together with the field observations indicated a compressional deformation pattern. 3 and 4 strong ductile deformation zones can be established in the Wangjiazhai section and the Lipu-Sizhai section, respectively. According to the magnetic fabric and petro-fabric studies, the Northeastern Jiangshan-Shaoxing tectonic zone suffered two kinds of deformation patterns during the late early Paleozoic, i.e., the thrusting deformation followed by sinistral shear deformation.

关键词： magnetic fabric ductile deformation deformation intensity deformation pattern Jiangshan-Shaoxing tectonic zone

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3D Seismic Attributes for Structural Analysis in Compressional Context: A Case Study from Western Sichuan Basin

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Journal of Earth Science 2014年第6期25卷 985-990页

作者： Bo Xu Ancheng Xiao Lei Wu Liguang Mao Youpu Dong Lijun Zhou Department of Earth Sciences Zhejiang University research center for structures in oil & gas bearing basins Ministry of Education Geophysical and Geochemical Exploration Institute of Zhejiang Department of Earth Science Kunming University of Science and Technology

Compressional region usually forms complex thrust faults system, which is difficult to identify using traditional migration profiles. The successful application of three-dimensional（3D） seismic attributes analysis greatly reduces the difficulty, and improves the accuracy and efficiency of seismic interpretation and structural analysis. In this paper, we took Qiongxi area in the compressional region of western Sichuan as an example, using two 3D seismic attributes, coherence and instantaneous phase, to identify fault assemblages and variations both vertically and laterally. The results show that the study area mainly consists of NS-, NE- and NEE-trending faults. The NS-trending faults are the largest and have a component of sinistral slip controlling the formation of NEE-trending faults, while the NE-trending faults are intermediate in scale, formed earlier and were cut by the NS-trending faults. Our results demonstrate that using seismic attributes for structural analysis have the following advantages：（1） more details of major fault zones,（2） highlighting minor faults which are hardly traced in seismic migration cube, and（3） easier acquisition of accurate fault systems. The application of seismic attributes provides a new idea for deciphering fine and complicated structures, and will significantly contribute to the development of objective and precise geological interpretation in the future.

关键词： structural analysis 3D seismic attribute compressional geological setting western Sichuan Basin Qiongxi

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