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公开(公告)号：US12129752B1
公开(公告)日：2024-10-29
申请号：US18434846
申请日：2024-02-07
发明人： Fei Tian , Wenhao Zheng , Qingyun Di , Yongyou Yang , Wenjing Cao
CPC分类号： E21B44/00 , E21B49/00 , G01V11/002 , E21B2200/20 , G06F30/28
摘要： 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.
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公开(公告)号：US12123852B1
公开(公告)日：2024-10-22
申请号：US18668177
申请日：2024-05-19
发明人： Yanzhi Hu , Xiao Li , Tianqiao Mao , Shouding Li , Jianming He , Zhaobin Zhang , Guanfang Li , Bo Zheng
IPC分类号： G01N3/12 , G01N23/046 , G01N33/24
CPC分类号： G01N3/12 , G01N33/24 , G01N23/046 , G01N2203/0003 , G01N2203/0019 , G01N2203/0048 , G01N2203/0256 , G01N2223/419
摘要： 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.
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公开(公告)号：US12105245B1
公开(公告)日：2024-10-01
申请号：US18410865
申请日：2024-01-11
发明人： Qihui Zhen , Qingyun Di , Yuliang Wang , Quanmin Yang
摘要： A ground receiving front-end compensation system for intelligent guide drilling borehole-ground electromagnetic transmission is provided, and includes a ground sensing module located below the underground wellhead, a ground system located between the underground wellhead and the measuring electrode, a measuring electrode and a compensation electrode; the ground system, the measuring electrode and the compensation electrode are located at the same side of the underground wellhead, a measuring electrode spacing (a first preset distance) is a distance from the underground wellhead to the measuring electrode; a compensation electrode spacing (a second preset distance) is a distance from the underground wellhead to the compensation electrode, the second preset distance is greater than the first preset distance; an induction signal of the ground sensing module enters the ground system, and the ground system outputs compensation current based on the induction signal, and compensates the measuring signal based on the compensation current.
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公开(公告)号：US12085540B1
公开(公告)日：2024-09-10
申请号：US18668176
申请日：2024-05-19
发明人： Zhaobin Zhang , Tianqiao Mao , Xiao Li , Shouding Li , Jianming He , Guanfang Li , Bo Zheng , Yanzhi Hu
IPC分类号： G01N3/12 , G01N3/02 , G01N23/046 , G01N33/24
CPC分类号： G01N3/12 , G01N3/02 , G01N23/046 , G01N33/24 , G01N2203/0019 , G01N2203/0256 , G01N2203/0641
摘要： A rock true-triaxial testing system based on computerized tomography (CT) scanning aims to solve problems in the prior art, that is, the rigidity of the frame in the testing system is insufficient; high-pressure lines, wires, and signal lines are entangled when rotating; and the reaction frame and loading actuators obstruct the ray. The rock true-triaxial testing system includes a true-triaxial loading system and a high-energy accelerator-based CT scanning system, where the high-energy accelerator-based CT scanning system is located inside the true-triaxial loading system, and the high-energy accelerator-based CT scanning system is configured to image an internal structure of a cubic rock sample and continuously apply a stress to the cubic rock sample through a plurality of piston extension rods in the true-triaxial loading system. The rock true-triaxial testing system reduces radiation attenuation, and ensures imaging quality and a stable and smooth loading process.
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公开(公告)号：US20240264325A1
公开(公告)日：2024-08-08
申请号：US18244562
申请日：2023-09-11
发明人： Jing OU , Jiansheng DU , Wenxiu ZHANG , Xinzhen HE , Xiaolong LI , Yuliang WANG
CPC分类号： G01V1/362 , G01V1/22 , G01V2200/16 , G01V2210/32
摘要： The present application discloses a carrier wave distortion compensation method for an MWD mud continuous wave system, comprising: in the downhole, modulating the carrier wave according to the transmission data to obtain a mud continuous wave signal to be transmitted; transmitting the mud continuous wave signal to the ground via a mud channel; denoising the received pressure signal on the ground to obtain a denoised mud continuous wave signal; performing subsequent processing on the denoised mud continuous wave signal to obtain the final transmission data; and performing downhole distortion compensation before modulating the carrier wave or performing ground distortion compensation on the denoised mud continuous wave signal before performing subsequent processing. The present application reduces the bit error rate of the MWD mud continuous wave system by performing waveform distortion compensation prior to downhole modulation or during performing signal processing on the ground.
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公开(公告)号：US12038545B1
公开(公告)日：2024-07-16
申请号：US18599172
申请日：2024-03-07
发明人： Yuan Wang , Chunlei Zhao
CPC分类号： G01V1/162 , G01V1/186 , G01V1/3835 , G01V2210/1427
摘要： A freely-combinable multifunctional ocean-bottom seismic detection device includes a cabin body having a sealed structure and is made of a titanium alloy. A hydrophone, a first power interface, and a signal transmission sealing connector are mounted on an upper flange. A digital collector, a broadband seismometer, a global positioning system (GPS), and an electronic compass are mounted in the cabin body. The broadband seismometer is mounted on a leveling mechanism. Rechargeable lithium batteries are mounted in sealed battery compartments. A settlement coupling frame is arranged below the cabin body and is detachably connected to the cabin body. An uncoupling mechanism is mounted at a top of the cabin body. The device has a synchronous arrangement function of deployment as an independent node with data stored inside the instrument, and quick integration into a seabed foundation (or a subsurface buoy) with real-time data transmission.
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公开(公告)号：US20240151704A1
公开(公告)日：2024-05-09
申请号：US18053840
申请日：2022-11-09
发明人： Shitou WU , Yueheng YANG , Hao WANG , Lei XU , Chao HUANG , Liewen XIE
IPC分类号： G01N33/24 , G01N1/28 , G01N30/72 , G01N33/202
CPC分类号： G01N33/24 , G01N1/286 , G01N30/7253 , G01N33/202 , G01N2001/2873 , G01N2001/364
摘要： The present disclosure discloses an in situ U—Pb dating method for calcite, including: cutting a calcite sample to prepare an epoxy resin sample target; placing the sample in a laser ablation sample chamber, and adjusting a position of the sample in an optical axis direction; conducting line scanning ablation on the sample target, and measuring ion signal intensity data of 43Ca, 88Sr, 139La, and 238U; conducting two-dimensional (2D) element imaging to obtain a 2D element content distribution map; according to the 2D element content distribution map, determining a high-U analysis target area, conducting point ablation on the high-U target area, and measuring ion signal intensity data of 206Pb, 207Pb, and 238U; and after the element signal data is obtained, calculating 207Pb/206Pb and 238U/206Pb fractionation coefficients, correcting ratios of an unknown sample, constructing a Tera-Wasserbug diagram, and calculating age data and an initial Pb isotope (207Pb/206Pb) composition of the calcite sample.
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公开(公告)号：US11965995B2
公开(公告)日：2024-04-23
申请号：US18321746
申请日：2023-05-22
发明人： Yibo Wang , Zizhuo Ma , Yikang Zheng , Shaojiang Wu , Qingfeng Xue
CPC分类号： G01T1/2985 , G01N23/046 , G01N29/14 , G01N29/227 , A61B5/0095 , G01N21/1702 , G01N2021/1704 , G01N2223/1016 , G01N2223/108 , G01N2223/311 , G01N2223/419 , G01N2223/616
摘要： Embodiments of the present disclosure provide a multi-physical field imaging method based on PET-CT and DAS, comprising: wrapping distributed acoustic sensors on a surface of a non-metallic sample to be tested, and then placing them in a pressure device; loading triaxial pressures; preparing a tracer fluid; pumping the tracer fluid into the non-metallic sample; collecting PET images and CT images of internal structure of the non-metallic sample, meanwhile, monitoring internal acoustic emission events of the non-metallic sample in real time; combining the PET images with the CT images, to obtain PET/CT images; locating the acoustic emission events, and obtaining occurrence time and spatial location of internal structural perturbations; and analyzing a mechanism of fluid-solid coupling effect in the non-metallic sample under loaded stress. The imaging method and system of the present disclosure can accurately and reliably image the fluid-solid coupling process in the material.
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公开(公告)号：US11965839B2
公开(公告)日：2024-04-23
申请号：US17712927
申请日：2022-04-04
发明人： Beixiu Huang , Lihui Li , Xiao Li
IPC分类号： G01N23/223 , G01N33/24
CPC分类号： G01N23/223 , G01N33/24 , G01N2223/076 , G01N2223/616
摘要： The present disclosure provides a method and system for acquiring an elastic modulus of a rock containing sedimentary rhythms, including: acquiring a rock sample containing sedimentary rhythms; measuring contents of rock elements in the rock sample at test points with an X-ray fluorescence (XRF) spectrometer, the test points being provided on different rhythms of the rock sample; determining a lithology of the rock sample according to the contents of the rock elements; determining an element-mineral relation equation according to the lithology; determining mineral components of the rock sample with the lithology and the element-mineral relation equation; determining a modulus coefficient of each of minerals according to the mineral components; and determining an elastic modulus of the rock sample according to the mineral components and the modulus coefficient of each of the minerals. The present disclosure can implement nondestructive testing on mechanical properties of rock samples.
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公开(公告)号：US11933928B1
公开(公告)日：2024-03-19
申请号：US18188603
申请日：2023-03-23
发明人： Shengqiang Mu , Shoudong Huo , Guoxu Shu , Xuhui Zhou , Jiaru Zou , Liang Huang
CPC分类号： G01V1/282 , G06F17/141
摘要： An irregular seismic data collection method is based on forward modeling. The method includes: fully collecting geological information of a work area to build a geological model, determining arrangement parameters of receiver points and shot points for regular high-density collection and irregular sparse collection, performing irregular optimization design on positions of the shot points based on forward modeling, performing irregular optimization design on positions of the receiver points based on forward modeling, and outputting a preferred irregular sparse observation system. Compared with the existing technologies, an arrangement scheme of shot points and receiver points in the present invention, including the irregular sparse observation system, implements irregular optimization design of the shot points and the receiver points based on a forward modeling technology by using a greedy strategy, so that the designed irregular observation system can suppress to the greatest extent spatial aliasing caused by irregular sparse collection.
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