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Non-seismic geophysical analysis of potential geothermal resources in the Longgang Block,Northeast China

Earth and Planetary Physics 2022年第6期6卷 576-591页

作者： HaiYan Liu Chong Peng linfu xue WenQing Li ChunHui Xu Cremilda Samuel Jofrisse College of Earth Sciences Jilin UniversityChangchun 130061China College of Geographical Sciences Shanxi Normal UniversityTaiyuan 030031China Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China College of Geo-exploration Science and Technology Jilin UniversityChangchun 130026China School of GeoSciences University of EdinburghEdinburgh EH93JWUK College of Tourism and Geographical Sciences Jilin Normal UniversitySiping Jilin 136000China

Although geothermal energy has many clear advantages,including its sustainability and environmentally friendly nature,research into potential geothermal resources across the Longgang Block,Northeast China,has been *** we present the first analysis of the potential geothermal resources in this region that employs joint geological and non-seismic geophysical methods to identify target areas that may be economically *** acquire and analyze high-precision gravity,magnetic,and magnetotelluric sounding data,which are constrained using the petrophysical parameters of outcropping rocks across the Longgang Block,to conduct a comprehensive evaluation of the region’s deep geological structures and their geothermal resources potential,with a focus on identifying faults,rock masses,and thermal storage *** find that Archean granitic gneiss and Mesozoic rock masses in the deeper section of the Longgang Block possess weak gravity anomalies and high *** also identify thermal storage structures near these deeper geological units based on their extremely low *** data are used to infer the dip and depth of known or hidden faults,to constrain the spatial distribution of intrusive rock masses,and to determine the spatial distribution of subsurface thermal storage *** potential of the target areas for geothermal resources exploitation is divided into three grades based on contact depths between faults and thermal storage structures,and the scale of their thermal storage *** results suggest that a joint non-seismic geophysical approach can be effective in locating and evaluating geothermal resources in complex geological settings.

关键词： Longgang Block geothermal resources Anshan−Benxi area petrophysical parameters magnetotelluric sounding

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Geochronological and geochemical constraints on the granitic gneiss in the Huozhou Complex: implications for the tectonic evolution of the Trans-North China Orogen

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Acta Geochimica 2023年第1期42卷 153-181页

作者： Chong Peng Haiyan Liu Ruiying Zhang Cremilda Samuel Jofrisse linfu xue Baozhi Pan College of Geographical Sciences Shanxi Normal UniversityTaiyuan 030031China Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi’an 710069China College of Geo-Exploration Science and Technology Jilin UniversityChangchun 130026China College of Earth Sciences Jilin UniversityChangchun 130061China School of GeoSciences University of EdinburghEdinburgh EH93JWUK

The Trans-North China Orogen is a major Neoarchean Paleoproterozoic collisional orogenic belt above the North China Craton, formed due to prolonged and complex processes. Even though many NeoarcheanPaleoproterozoic magmatic and metamorphic activities have been reported, due to the Huozhou Complex’s small outcropping range, little attention has been paid to the origin of various igneous rocks of the Huozhou Complex in the center of the Trans-North China Orogen. The Huozhou Complex, located south of the Luè liang, Wutai, and Hengshan complexes, is an important window into the Early Precambrian structure and evolution of the North China Craton. Its magma and metamorphism are crucial to understanding the development of the structural evolution of the Trans-North China Orogen. The Huozhou metamorphic complex area exposes a range of Precambrian metamorphic rocks, among which the most extensively dispersed is felsic biotite plagioclase gneiss. In this study comprehensive geological field survey, micropetrology,chronology, geochemistry, and Hf isotope analysis were carried out for the Qinggangping and Anziping gneiss in the north of the Huozhou Complex. The results show that the magmatic zircon age of the Qinggangping gneiss is2196 ± 14 Ma, and its protolith is I-type granite, formed by partial melting of igneous rocks in the absence of weathering. Its source is mainly the juvenile crust from depleted mantle dating 2431–2719 Ma, with a small amount of mantle-derived material. The Anziping gneiss has a metamorphic zircon age of 1931 ± 13 Ma with an S-type granite protolith belonging to peraluminous *** Anziping gneiss is formed by recycling pre-existing crustal components at 2613–2848 Ma. A minor quantity of mantle-derived magma is also introduced to the crust simultaneously. The samples of Qinggangping gneiss and Anziping gneiss show the characteristics of obvious negative Nb, Ti, and P elements in the spider diagram of primitive mantle standardization. This implies

关键词： Zircon U–Pb dating Geochemistry Huozhou complex Trans-North China orogen Biotite plagioclase gneiss North China craton

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Tectonic evolution of the Changling fault basin and its relationship to oil and gas accumulation

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Mining Science and Technology 2011年第3期21卷 427-432页

作者： Wang Jianqiang Yang Guang xue linfu Zhang Jianwei Bai Ye Li Wenbo College of Earth Sciences Jilin University Changchun 130061 China Geo-Engineering Investigation Institute of Qingdaa Qingdao 266071 China

The Changling fault depression passed through three stages of evolution: a period of faulting, a period of subsidence, and an inversion period. The fault lifted the whole area and the formation was eroded during the late Yingcheng formation, the late Nenjiang formation, and the late Mingshui formation. The denudation quantity of eight wells located in the study area is estimated by the interval transit time method and by the formation trend extension method using seismic and drilling data. Inversion back stripping technology with de-compaction correction was used to restore the original sedimentary thickness step by step and to recover the burial history at a single well. Two profiles were selected for the recovery and study of the tectonic evolution. The study confirmed that the primary major gas bearing structure formed due to thermal shrinkage lifting during the late Yingcheng formation. Successive development in a pattern during the late Mingshui formation led to the formation of the primary gas pool. Vertical differential uplift during the late Nenjiang formation formed the Fulongquan structure during the late Paleogene. At this same time a secondary gas pool formed. A large scale reverse developed late in the Mingshui formation that provided the impetus for formation of a secondary gas pool. It is thought that the migration and accumulation of oil and gas was controlled by lithologic character, fracture, and structure. The local uplift in the vicinity of the hydrocarbon recession is most conducive to the collection of hydrocarbon gas.

关键词： Changling fault depressionDenudation quantityTectonic evolutionOil and gas accumulation

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Deep Processes of Basin Evolution:A Case Study of the Southern Songliao Basin and Adjacent Area,NE China in Mesozoic-Cenozoic

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Global Geology 2003年第1期8卷 41-48页

作者： Rihui Cheng Dongpo Wang linfu xue College of Earth Sciences of Jilin University College of Earth Sciences of Jilin UniversityCollege of Earth Sciences of Jilin University Changchun130061 ChinaChangchun130061 ChinaChangchun130061 China

In south of the Songliao Basin and adjacent area of NE China, there are several high conductive layers in crust and upper mantle. Those layers are interpreted as detachment and rheology, which represent some features of lithosphere, asthenosphere and Moho, and related to the crust-mantle structure of the continent in the study area. The differences of the crust-mantle structures in different places in the study area reflect the differences in the movement and evolution of asthenosphere, lithosphere and crust. The differences can be summarized as follows. (1) Along the south profile of MT, the buried depth of the surface of Moho is 31 ～34 km beneath the Liaohe Basin and 35～37 km beneath the west Liaoning area. Along the north profile of MT, the buried depth of Moho is 32～33 km beneath Changtu area and 36～37 km beneath Kailu area in southern Songliao Basin. The buried depth beneath the central of the Songliao Basin is 29 km.(2) The difference of thickness of lithosphere exists in the south area and the north area of Chifeng-Kaiyuan fault. The thickness of lithosphere is about 65～120 km in the south of the fault, thickening from east to west. The top surface of asthenosphere is highly uplifted in the Liaohe Basin and the highest point is about 65 km in buried depth. The thickness of lithosphere in the north of the fault is about 60～65 km, thinner about 25 km than that in the south of the fault (West Liaoning). Deep processes such as upwelling of mantle thermal flow, extension of lithosphere, underplating, and thinning and subsidence of crust, evidenced from the crust-mantle structures were the direct forces of the basin formation in the study area during the Mesozoic-Cenozoic.

关键词： high conductive layer, crust-mantle structure, deep process, basin evolution

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A Method for Determining Sedimentary Micro-Facies Belts Automatically

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Global Geology 2003年第1期8卷 26-33页

作者： linfu xue Qitai Mei Quan Sun College of Earth Sciences Jilin UniversityThe 7th Oil Factory of Daqing Oilfield CompanyThe 7th Oil Factory of Daqing Oilfield Company Changchun130026 ChinaDaqing163517 ChinaDaqing163517 China

It is important to understand the distribution of sedimentary facies, especially the distribution of sand body that is the key for oil production and exploration. The secondary oil recovery requires analyzing a great deal of data acc-umulated within decades of oil field development. At many cases sedimentary micro-facies maps need to be reconstru-cted and redrawn frequently, which is time-consuming and heavy. This paper presents an integrated approach for determi-ning the distribution of sedimentary micro-facies, tracing the micro-facies boundary, and drawing the map of sedimentary micro-facies belts automatically by computer technique. The approach is based on the division and correlation of strata of multiple wells as well as analysis of sedimentary facies. The approach includes transform, gridding, interpolation, sup-erposing, searching boundary and drawing the map of sedimentary facies belts, and employs the spatial interpolation me-thod and "worm"interpolation method to determine the distribution of sedimentary micro-facies including sand ribbon and/or sand blanket. The computer software developed on the basis of the above principle provides a tool for quick visu-alization and understanding the distribution of sedimentary micro-facies and reservoir. Satisfied results have been achieve-ed by applying the technique to the Putaohua Oil Field in Songliao Basin, China.

关键词： method, sedimentary micro-facies, Putaohua Oil Field, computer software

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Spatial data mining system for ore-forming prediction

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Global Geology 2007年第1期10卷 100-104页

作者： Man WANG linfu xue Yingwei WANG College of Earth Sciences Jilin University Changchun 130061 China Digital Geology Lab Jilin University Changchun 130061 China

The authors designed the spatial data mining system for ore-forming prediction based on the theory and methods of data mining as well as the technique of spatial database,in combination with the characteristics of geological information *** system consists of data management,data mining and knowledge discovery,knowledge *** can syncretize multi-source geosciences data effectively,such as geology,geochemistry,geophysics,*** system digitized geological information data as data layer files which consist of the two numerical values,to store these files in the system *** to the combination of the characters of geological information,metallogenic prognosis was realized,as an example from some area in Heilongjiang *** prospect area of hydrothermal copper deposit was determined.

关键词： ore-forming prediction spatial data mining multi-source geoscience data

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Interpretation of remote sensing of geological structures and prediction of gold mineralization in Mohe area and its adjacent region

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Global Geology 2007年第1期10卷 88-94页

作者： Ruiqing QIE linfu xue Shixiang LIU Yunliang YU College of Earth Sciences Jilin University Changchun 130026 China College of Management Jilin Agricultural University Changchun 130118 China

The authors took the ETM+ multi-spectra data as the data information and correlation coefficient for each band and carried out their information volume *** to certain criteria,the authors also determined the optimum band-combined *** image clarity is improved by various enhancements and fusions *** on remote sensing geological interpretation in detail,the relationship between remote sensing geological characters and gold mine were analyzed *** all kinds of remote sensing structure information,combining other research data,the authors determined mainly ore-controlling ore *** prospective areas of gold ores were determined and furthermore significant finding mine target areas was confirmed.

关键词： TM image linear structure ring structure gold deposit Mohe area

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Division of high resolution sequence stratigraphy units with wavelet transform of logs in Dagang Oilfield

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Global Geology 2007年第1期10卷 69-73页

作者： Ying ZHANG Baozhi PAN Buzhou HUANG linfu xue College of Geoexploration Science and Technology Jilin University Changchun 130026 China College of Earth Sciences Jilin University Changchurz 130026 China

Division of high resolution sequence stratigraphy units based on wavelet transform of logging data is found to be good at identifying subtle cycles of geological process in Kongnan area of Dagang Oilfield. The anal- ysis of multi-scales gyre of formation with 1-D continuous Dmey wavelet transform of log curve （GR） and I-D discrete Daubechies wavelet transform of log curve （Rt） all make the division of sequence interfaces more objec- tive and precise, which avoids the artificial influence with core analysis and the uncertainty with seismic data and core analysis.

关键词： high resolution sequence stratigraphy units logging data wavelet transform

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Design and implementation of web fast sharing platform of massive geological map

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Global Geology 2012年第2期15卷 114-119页

作者： YAN Yan xue linfu ZHANG Wei LI Wenqing College of Earth Sciences Jilin University Changchun 130026 China

It is still a laborious work to consult massive multidisciplinary geological maps which are scattered in different geological departments,and hard to give full play to the potential application value of geological map. Along with the network,the development of communication and computer technology,especially with the Web2.0 technology arisen,provides opportunities to the web for sharing of geological maps. Web fast sharing platform of massive geological maps( WSPGM) is based on the Flex technology development,using B/S architecture,with map navigation,search,display,security and other functions of the software system. Through the map pretreatment and asynchronous communication the system can display any size of geological map,and through the range limits,rights management,sharing system and watermark logo to take effective security on geological map. On the basis of this system,with the Jilin University web sharing system of geological map,the system can greatly improve the efficiency of using geological map. for research.

关键词： geological map sharing platform WSPGM

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Numerical simulation of oil shale in-situ mining using fluid-thermo-solid coupling

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Global Geology 2020年第4期23卷 247-254页

作者： ZHANG Tiantong LIU Zeyu XIE Zhixian LI Yubo xue linfu College of Earth Sciences Jilin UniversityChangchun 130061China

For the in-situ gas-injection mining technology of oil shale by process,a numerical simulation method with flow-thermo-solid coupling is proposed in this *** method adopts separate simulations and step-by-step coupling simulation ideas combined with the advantages of the finite element method and the finite volume *** numerical simulation of flow-thermo-solid coupling is decomposed into two parts:flow-solid coupling and thermo-solid *** the Fuyu oil shale in-situ production test area in Songliao Basin as an example,it is concluded that the oil shale has undergone four heating stages:a rapid temperature rise,a steady temperature rise,a slow temperature rise,and heat *** takes about 10 years for the stress-strain state of the oil shale layer to reach a steady-state through the thermo-solid *** main strain zones of the oil shale layer are distributed near the fracturing fractures connected to the gas injection well and at the edge of the fracturing *** areas with the plastic deformation in the oil shale layer predominantly appear near the gas injection wells,production wells,and fracturing *** areas with the largest fracture strength are mostly distributed near the edge of the fracturing fractures with low flow velocity and low temperature.

关键词： oil shale in-situ mining numerical simulation fluid-thermo-solid coupling stress-strain relationship

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