Patents Assigned to Institute of Geology and Geophysics, Chinese Academy of Sciences
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Mapping method of landslide threat range based on equivalent friction coefficient and trend analysis
Patent number: 12216239Abstract: Disclosed is a mapping method of landslide threat range based on equivalent friction coefficient and trend analysis, which includes the following steps: obtaining physical parameters of a landslide, and obtaining a volume of the landslide according to an area in the physical parameters; selecting relevant parameters based on a rock type in the physical parameters, and obtaining the equivalent friction coefficient according to the relevant parameters and the volume; obtaining a landslide runout distance according to the equivalent friction coefficient, determining coordinate points of a hyperbola and a front edge boundary range according to the landslide runout distance, and performing a hyperbolic fitting on two side boundaries of the landslide according to the coordinate points to obtain a side boundary range; generating the landslide threat range based on the front edge boundary range and the side boundary range.Type: GrantFiled: July 4, 2024Date of Patent: February 4, 2025Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Xueliang Wang, Mengmeng Ban, Mengjie Zhang, Shengwen Qi, Lihui Li, Bowen Zheng -
Patent number: 12209966Abstract: The disclosure provides a test device and a test method for isotope measurement of noble gases in lunar soil. The testing device includes a carbon dioxide laser ultra-high vacuum sample melting system, zirconium-aluminum getters, a vacuum dry pump, a first molecular pump, a second molecular pump, a neon gas capture unit, an argon gas capture unit, an argon krypton-xenon capture unit, a dilution tank, a sputtering ion pump and a noble gas mass spectrometer which are connected through pipelines, and each pipeline and each component are connected through a specific way; in addition, control valves for controlling the opening and closing of the pipelines are installed on the connection path between each pipeline and each component, and the disclosure also provides a matching test method.Type: GrantFiled: September 10, 2024Date of Patent: January 28, 2025Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Xuhang Zhang, Fei Su, Huaiyu He
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Patent number: 12203753Abstract: The present invention discloses an automatic identification method and device for planetary seismograph azimuth angles based on a planetary sundial, comprising: obtaining geographical coordinates of a sundial needle tip and a sundial needle tip shadow relative to a planetary surface; determining a theoretical second solar ray elevation angle and a ray azimuth angle; constructing an objective function according to a first solar ray elevation angle and a ray azimuth angle corresponding to a time for obtaining the sundial needle tip shadow; and taking a minimum objective function as a target for solving a planetary seismograph azimuth angle. The present invention determines the planetary seismograph azimuth angle only by optical photos of a planetary rover or a lander without active vibration devices on supporting legs of the lander, thereby reducing system complexity and reducing weight, volume and power consumption brought by additional devices on the supporting legs of the lander.Type: GrantFiled: December 26, 2023Date of Patent: January 21, 2025Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, THE CHINESE ACADEMY OF SCIENCESInventors: Juan Wang, Jinhai Zhang, Shengquan Zhang, Shaoqing Li, Qingyu You
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Patent number: 12196907Abstract: The present disclosure belongs to the field of geological prospecting and particularly relates to an intelligent real-time updating method and system for a stratigraphic framework with geosteering-while-drilling, aiming to solve the problems of insufficient precision in position and dipping angle of a stratigraphic framework due to differences in parameters measured by different instruments for well logging and mud logging while drilling.Type: GrantFiled: August 25, 2022Date of Patent: January 14, 2025Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Fei Tian, Wenhao Zheng
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Patent number: 12173598Abstract: The present invention is in the field of geological exploration and particularly relates to a method and system for gamma ray (GR) while drilling parameter data optimization for deep-filed oil and gas precise navigation, aiming to solve the problem of insufficient measurement accuracy of the depth of a well in the existing drilling technology. The present invention comprises: eliminating outliers from the obtained GR while drilling parameter data and determining the rationality of the eliminated outlier; performing derivation on a real-time updated variance attribute while drilling curve to obtain a real-time updated formation change-point detection result; searching the formation change-point detection result of a pre-drilling predicted well curve; and correcting the drilling depth by comparing the two formation change-point detection results to obtain the accurate depth while drilling.Type: GrantFiled: January 18, 2024Date of Patent: December 24, 2024Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Fei Tian, Qingyun Di, Wenhao Zheng, Yongyou Yang, Wenjing Cao
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Publication number: 20240401467Abstract: The present disclosure discloses a solving method and system for an Euler angle attitude. The solving method includes: acquiring a rough rotation angle ?T of a tool surface of a drilling tool in a search interval; performing calculation according to the rough rotation angle ?T to obtain a variation range RangeT of the tool surface; disposing a plurality of particles within the variation range RangeT, corresponding position coordinates of the particles to an Euler angle value, randomly generating initial speeds of the particles, calculating a fitness function of each particle, and selecting the particle with the minimum fitness function as an optimal particle; updating a speed and a position of each particle, and gradually moving the particles closer to an optimal position by adopting an iteration method; and after performing n iterations until the precision of the fitness function of the optimal particle reaches a threshold.Type: ApplicationFiled: July 19, 2023Publication date: December 5, 2024Applicant: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Yongyou YANG, Kanggui WEI
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Patent number: 12158558Abstract: The present invention belongs to the field of geologic survey, and particularly relates to a real-time calibration method and system of acoustic logging data while drilling for precise navigation of deep oil and gas, aiming to solve a problem of inability to automatically identify stratum boundaries to adapt to geology at various different depths in an existing drilling process. The method of the present invention includes: acquiring standardized acoustic parameter data while drilling; acquiring time-depth relationship of historical acoustic curve data of drilled wells, and current actual drilling time-depth relationship; performing interpolation based on the current actual drilling time-depth relationship, to acquire interpolated current actual drilling time-depth relationship; correcting the interpolated current actual drilling time-depth relationship; and completing current precise depth correction based on the current actual drilling acoustic curve.Type: GrantFiled: March 18, 2024Date of Patent: December 3, 2024Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Fei Tian, Qingyun Di, Wenhao Zheng, Yongyou Yang, Wenjing Cao
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Patent number: 12158554Abstract: The present invention belongs to the field of deep navigation, and in particular to a high-precision modeling method and system of three-dimensional velocity field for precise navigation of deep oil and gas. The present invention includes: extracting wave impedance characteristics based on standardized well logging data to obtain a wave impedance curve; acquiring a velocity vector of each location at current depth, to obtain a one-dimensional velocity curve; based on the one-dimensional velocity curve, training a velocity value prediction model based on wave impedance at the current depth; performing wave impedance inversion based on the wave impedance curve at the current depth to obtain a wave impedance inversion data volume; and based on the wave impedance inversion data volume, through the velocity value prediction model based on wave impedance at the current depth, acquiring a three-dimensional high-accuracy velocity volume.Type: GrantFiled: March 15, 2024Date of Patent: December 3, 2024Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Fei Tian, Qingyun Di, Wenhao Zheng, Yongyou Yang, Wenjing Cao
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Patent number: 12153186Abstract: A signal acquisition method of an azimuthal electromagnetic wave resistivity instrument includes receiving, by a receiving antenna, a magnetic induction signal after formation attenuation, and converting the received magnetic induction signal into an electrical signal; amplifying, by a preamplifier circuit, a fixed gain of a received signal with nV level amplitude induced on the receiving antenna; controlling a filtering circuit to filter the amplified signal; amplifying the filtered signal using a programmable amplifier circuit to generate a target signal; and conducting digital conversion for the target signal that meets the requirements of low-frequency acquisition.Type: GrantFiled: August 22, 2023Date of Patent: November 26, 2024Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Yali Zhang, Wenxiu Zhang, Wenxuan Chen
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Patent number: 12153038Abstract: A test system and a test method for replacing natural gas hydrate with carbon dioxide are disclosed, relating to the technical field of exploitation of natural gas hydrates. The test system comprises a sample reaction vessel, a sample boundary condition loading device, a methane gas supply device, a carbon dioxide gas supply device, an output article collection and measurement device, and a data acquisition control device. A sample-sealing rubber sleeve and an upper sample-sealing plate are arranged in an inner cavity of the vessel, the sample-sealing rubber sleeve, a lower tray and the upper sample-sealing plate form a sample-sealing space. An axial pressure loading plate is arranged on the upper sample-sealing plate, and an upper cover plate is provided with an axial pressure loading injection hole. A side shrouding is provided with a confining pressure loading injection hole and a product discharge hole.Type: GrantFiled: November 7, 2022Date of Patent: November 26, 2024Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Jianming He, Shouding Li, Xiao Li, Zhaobin Zhang
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Patent number: 12153181Abstract: A noise reduction measurement method of acoustic while drilling data based on signal synchronization is provided. The method performs pre-sampling before effective excitation of a low-frequency pulser, then extracts center frequency and phase information of noise of the low-frequency pulser by fast Fourier transform, and adjusts the excitation and sampling time of the acoustic signal according to the center frequency and phase information of the noise of the low-frequency pulser. Accordingly, the coincidence of the acoustic signal excited by the acoustic instrument and the acoustic signal generated by operation excitation of the pulser can be actively avoided, and the signal-to-noise ratio of the received signal of the acoustic instrument can be effectively improved.Type: GrantFiled: January 31, 2024Date of Patent: November 26, 2024Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Fuqiang Wei, Yuntao Sun, Wenxiu Zhang, Jian Zheng
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Publication number: 20240377344Abstract: A method for accurately correcting the age of columbite-tantalite by using double-reference-material includes: using at least two kinds of columbite-tantalite with known ages as reference materials; determining the positive correlation between the lead-uranium ion ratio and the uranium ion ratio of the columbite-tantalite based on test results of a lead-uranium ion ratio ( 206 Pb + 238 U 16 ? O + ) Cstd ? 1 and a uranium ion ratio ( 238 U 16 ? O 2 + 238 U 16 ? O + ) Cstd ? 1 of the reference material 1, correcting the correlation by reference material 2; calculating the lead-uranium mass ratio ( 206 Pb 238 U ) un of the columbite-tantalite sample to be tested by using the corrected correlation; finally, determining the uranium-lead age UPbtun of the columbite-tantalite sample to be tested based on the lead-uranium mass ratio ( 206 Pb 238 U ) un .Type: ApplicationFiled: April 23, 2024Publication date: November 14, 2024Applicant: INSTITUTE OF GEOLOGY AND GEOPHYSICS CHINESE ACADEMY OF SCIENCESInventors: Xiaoxiao LING, Yu LIU, Xianhua LI, Hongxia MA
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Patent number: 12135401Abstract: The application provides an estimation method of detecting elevation by a semi-airborne electromagnetic method, including the following steps: S1, judging original elevation data to obtain wrong point data and normal data; S2, filtering the wrong point data by an improved Kalman filtering method, and filtering the normal data by a conventional Kalman filtering method; S3, fusing a filtering result of the wrong point data and a filtering result of the normal data, and taking a fused result as a measured value sequence used in a next working process; and S4, repeating the S1-S3 until the fused result meets preset requirements.Type: GrantFiled: January 12, 2024Date of Patent: November 5, 2024Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCESInventors: Xin Wu, Guoqiang Xue, Yanbo Wang
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Patent number: 12129752Abstract: A precise deep oil and gas navigation system based on structural evaluation of a sand/shale formation, and a device are provided. The precise deep oil and gas navigation system is implemented by: acquiring basic data of a target well location as well as basic data and an acoustic LWD curve of an adjacent well; dividing a basic data group; retaining extremely strongly correlated data and strongly correlated data of the basic data group, and performing dimensionality reduction; constructing a three-dimensional fusion feature data volume based on a dimensionality-reduced fusion feature parameter and a time-frequency spectrum; predicting a missing curve according to the three-dimensional fusion feature data volume; and correcting a stratigraphic structure model based on the missing curve to guide the design of a drilling trajectory.Type: GrantFiled: February 7, 2024Date of Patent: October 29, 2024Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCESInventors: Fei Tian, Wenhao Zheng, Qingyun Di, Yongyou Yang, Wenjing Cao
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Patent number: 12130397Abstract: The present disclosure belongs to the field of geological exploration, and particularly relates to a seismic acquisition system based on a frequency domain expansion MEMS sensor, aiming at solving the problem that vibration frequencies exceed the frequency range of the MEMS sensor due to strong vibrations and cross coupling of multi-frequency signals usually occurring in well logging while drilling. When the MEMS sensor suffers strong vibrations or the MEMS sensor that can be selected cannot ensure that the frequency requirement of a measurement signal is stably met, the frequency domain expander of the present disclosure expands the frequency domain of a detection signal, so that the MEMS sensor can measure strong vibrations and out-of-band frequencies to a certain extent, the application range of the seismic acquisition system is extended, and the anti-mutation capability of the seismic acquisition system is improved.Type: GrantFiled: November 23, 2022Date of Patent: October 29, 2024Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Jing Liu, Zongwei Li, Yongjian Zhou, Kedu Han, Changchun Yang
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Patent number: 12123852Abstract: A multifunctional and visual rock triaxial testing system is provided. The multifunctional and visual rock triaxial testing system includes an axial loading system, a high-energy accelerator computerized tomography (CT) scanning system, a turntable system, a triaxial pressure cell, a fluid fracturing pump, a temperature pump, a confining pressure loading pump, a power oil source, and an integrated control console, where the turntable system is configured to drive the high-energy accelerator CT scanning system to rotate, so as to scan an internal structure of a rock sample; and the triaxial pressure cell and the fluid fracturing pump are configured to conduct compression and fracturing tests on the rock sample, respectively.Type: GrantFiled: May 19, 2024Date of Patent: October 22, 2024Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCESInventors: Yanzhi Hu, Xiao Li, Tianqiao Mao, Shouding Li, Jianming He, Zhaobin Zhang, Guanfang Li, Bo Zheng
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Patent number: 12123291Abstract: The present disclosure relates to a method and a system for updating a three-dimensional lithology model for precision navigation of deep oil and gas in real time, aiming to solve the problem that an existing while drilling model is difficult to adapt to a real-time update of the model in a strong heterogeneous reservoir, which leads to a decrease in accuracy of an established prediction model and a lack of a drilling ratio. The present disclosure includes: dividing pre-processed seismic data into three pieces of single-frequency seismic waveform data by a wavelet frequency division method; selecting an optimal single-frequency combination according to a correlation coefficient between gamma ray prediction curves and measured curves at different depths; and computing a single-frequency gamma ray prediction model while drilling, updated with drilling, and a full-band gamma ray distribution model while drilling, updated with drilling, by means of the optimal single-frequency combination.Type: GrantFiled: January 9, 2024Date of Patent: October 22, 2024Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Fei Tian, Qingyun Di, Wenhao Zheng, Yongyou Yang, Wenjing Cao
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Publication number: 20240344453Abstract: The present disclosure relates to the technical field of acoustic detection while drilling, in particular to a method and a device for identifying near-bit lithology based on intelligent voiceprint identification, including acquiring rock sound data; pre-processing the acquired rock sound data; extracting voiceprint features of pretreated rock sounds; establishing a rock voiceprint feature database; training the intelligent voiceprint identification algorithms according to the lithology labels and voiceprint feature data in the rock voiceprint feature database; intelligently identifying or predicting the rock voiceprint features using the intelligent voiceprint identification algorithms and outputting the lithology identification results. The present disclosure can greatly enhance the real-time availability and accuracy of obtaining near-bit stratum lithology data in-site, which can effectively improve the reservoir drilling rate and timely avoid drilling risks.Type: ApplicationFiled: June 24, 2023Publication date: October 17, 2024Applicant: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Muming XIA, Canyun WANG, Changchun YANG, Wenxiu ZHANG, Fei TIAN, Zongwei LI, Jing LIU
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Patent number: 12117370Abstract: A physical simulation test system for studying a tunnel structure under active fault movements includes: a simulation box, a loading frame, a first loading mechanism, a second loading mechanism and a third loading mechanism. The simulation box is a hollow and open box structure including a first box and a second box that can slide relative to each other. The loading frame includes a crossbeam, a first bracket, a second bracket, and a third bracket. The simulation box is located below the crossbeam, between the first bracket and the second bracket, and in front of the third bracket. The first loading mechanism is disposed on the first bracket, the second loading mechanism is located below the first box, and the third loading mechanism is disposed on the third bracket. The three loading mechanisms are configured to provide loading forces in three different directions to the first box.Type: GrantFiled: June 11, 2024Date of Patent: October 15, 2024Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Yu Zou, Chunling Liu, Guangming Luo, Shengwen Qi, Songfeng Guo, Bowen Zheng, Yongchao Li
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Patent number: 12117583Abstract: Provided are a method and a device for mobile rapid exploration of mineral resources. The device includes a main magnetic sensor, a slave magnetic sensor and a ground vertical magnetic field sensor arranged in a ground reference station. During exploration, on the one hand, a semi-airborne artificial source exploration method is used to collect signals with the main magnetic sensor and the slave magnetic sensor, in which the slave magnetic sensor collects low-frequency motion noise, and the main magnetic sensor collects low-frequency motion noise and vertical magnetic field signals synchronously. On the other hand, vertical magnetic field signals in a same survey area are collected by the ground vertical magnetic field sensor, and then the low-frequency motion noise collected by the main magnetic sensor is estimated twice through two correlation mappings, so as to obtain a final vertical magnetic field measurement signal.Type: GrantFiled: May 30, 2024Date of Patent: October 15, 2024Assignee: Institute of Geology and Geophysics, Chinese Academy of SciencesInventors: Lili Kang, Zhongxing Wang, Zhiyao Liu, Tianxin Zhang, Zihang Li