公开(公告)号：US11970655B2

公开(公告)日：2024-04-30

申请号：US17966516

申请日：2022-10-14

Applicant: China University of Petroleum (East China)

Inventor： Jingping Liu ,  Jinsheng Sun ,  Kaihe Lv ,  Meichun Li ,  Jintang Wang ,  Jiafeng Jin ,  Yingrui Bai ,  Xianbin Huang ,  Jian Li ,  Shenglong Shi

IPC: C09K8/24 ,  C09K8/42 ,  E21B21/00

CPC classification number: C09K8/24 ,  C09K8/426 ,  E21B21/003 ,  C09K2208/10

Abstract: A high temperature and high salinity-resistant complementarily rigid-flexible plugging agent, a method for preparing the same, and a water-based drilling fluid and a use thereof.

公开(公告)号：US11953633B1

公开(公告)日：2024-04-09

申请号：US18492896

申请日：2023-10-24

Applicant: China University of Petroleum (East China)

Inventor： Qizhen Du ,  Shihao Zhou ,  Zhaoshun Liu ,  Wenhao Lyu ,  Li-Yun Fu

IPC: G01V1/00 ,  G01V1/28

CPC classification number: G01V1/008 ,  G01V1/284

Abstract: This disclosure relates to the technical field of exploration geophysics, in particular to a method, a device, and a computer device for decoupling anisotropic elastic wave. The method includes: determining a set of Thomsen parameters included in an anisotropic model based on a received to-be-decomposed wave field decomposition request; transforming the set of Thomsen parameters to obtain a set of initial elastic parameters; performing S-wave and P-wave velocities separation processing for the set of initial elastic parameters to obtain a set of target P-wave elastic parameters and a set of target S-wave elastic parameters; and substituting those into the anisotropic model to process the to-be-decomposed wave field and obtain a target P-wave matrix and a target S-wave matrix. The process of decomposing S-wave and P-wave fields is simplified and the calculation cost is reduced according to the embodiments of this disclosure.

公开(公告)号：US11940590B1

公开(公告)日：2024-03-26

申请号：US18470946

申请日：2023-09-20

Applicant: CHINA UNIVERSITY OF PETROLEUM(EAST CHINA)

Inventor： Cairui Shao ,  Miantao Yu ,  Fuming Zhang

IPC: G01V5/06 ,  E21B49/00

CPC classification number: G01V5/06 ,  E21B49/00

Abstract: Through analysis on an effective detection space of a gamma detector, a one-dimensional equivalent longitudinal contribution coefficient (varying with a distance between a formation and the detector) of a natural gamma-ray flux received by the gamma detector under the condition that the formation and a wellbore are orthogonal is obtained in the effective detection space, and then a corresponding function expression is given by fitting. An integral of a gamma-ray flux received by the detector under the condition of a deviated well is converted into a one-dimensional equivalent integral problem under the condition of a straight well, so as to achieve the fast forward of natural gamma-ray logging of the formation under the conditions of highly-deviated and horizontal wells. This simplified fast forward algorithm can replace a gamma forward method of spherical spatial-division integrals in parallel sedimentary formations, reduce a space-time complexity of algorithms, and improve a calculation efficiency.

公开(公告)号：US11934488B2

公开(公告)日：2024-03-19

申请号：US17295493

申请日：2020-09-10

Applicant: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)

Inventor： Yongfei Yang ,  Fugui Liu ,  Jun Yao ,  Huaisen Song ,  Kai Zhang ,  Lei Zhang ,  Hai Sun ,  Wenhui Song ,  Yuanbo Wang ,  Bozhao Xu

IPC: G06F18/214 ,  G06N3/045 ,  G06N3/088 ,  G06T5/00 ,  G06T7/11 ,  G06T7/62

CPC classification number: G06F18/2148 ,  G06N3/045 ,  G06N3/088 ,  G06T5/70 ,  G06T7/11 ,  G06T7/62 ,  G06T2207/20021 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/20152

Abstract: The present disclosure provides a method and system for constructing a digital rock, and relates to the technical field of digital rocks. According to the method, a three-dimensional (3D) digital rock image that can reflect real rock information is obtained using an image scanning technology, and the image is preprocessed to obtain a digital rock training image for training a generative adversarial network (GAN). The trained GAN is stored to obtain a digital rock construction model. The stored digital rock construction model can be directly used to quickly construct a target digital rock image. This not only greatly reduces computational costs, but also reduces costs and time consumption for obtaining high-resolution sample images. In addition, the constructed target digital rock image can also reflect real rock information.

公开(公告)号：US20240076961A1

公开(公告)日：2024-03-07

申请号：US17985860

申请日：2022-11-13

Applicant: CHINA UNIVERSITY OF PETROLEUM-BEIJING

Inventor： Rukuan CHAI ,  Yuetian LIU ,  Wenkuan ZHENG ,  Jingpeng LI ,  Liang XUE ,  Jingru WANG ,  Yuting HE

IPC: E21B41/00 ,  B01D53/62 ,  B01D53/90 ,  B01J23/825 ,  B01J23/835 ,  E21B43/114 ,  E21B43/16 ,  E21B43/38

CPC classification number: E21B41/0064 ,  B01D53/62 ,  B01D53/90 ,  B01J23/825 ,  B01J23/835 ,  E21B43/114 ,  E21B43/164 ,  E21B43/38 ,  B01D2221/04 ,  B01D2257/504 ,  B01J2523/17

Abstract: The present invention provides a mixed injection fluid and a corresponding method for enhancing CO2 sequestration and oil recovery, which is a method of the geothermal driven CO2 catalytic reduction for enhancing CO2 sequestration and oil recovery. In the present invention, a technical solution of the liquid nitrogen fracturing, an injection fluid injection, and the catalysis transportation and storage were adopted, which makes full use of the thermal energy of deep geothermal reservoir in combination with nano-Cu-based catalysts to activate the hydrothermal cracking reaction of crude oil and CO2 thermal reduction reaction, so to simultaneously enhance crude oil recovery and CO2 sequestration, fundamentally solving the existing problems of CO2-EOR technologies. Moreover, CO2 thermal catalytic reduction products can also work as a surfactant to accelerate the desorption crude oil from the rock surface and decrease the interfacial tension, and finally EOR.

公开(公告)号：US20240046120A1

公开(公告)日：2024-02-08

申请号：US18355700

申请日：2023-07-20

Applicant: China University of Petroleum-Beijing

Inventor： Leilei YANG ,  Keyu LIU ,  Wei YANG ,  Hui WANG ,  Wenhao YANG ,  Zijie ZHOU ,  Ke XU ,  Yinglin CAO ,  Xiaowei LI ,  Yi LIU ,  Dawei WANG ,  Shu XU ,  Ziyang SONG

IPC: G06N5/022

CPC classification number: G06N5/022

Abstract: The present disclosure provides a training method and a prediction method for a diagenetic parameter prediction model based on an artificial intelligence algorithm, which includes: obtaining a plurality of diagenesis samples each including diagenetic condition parameters and an actual diagenetic parameter evolved therefrom; constructing an initial diagenetic parameter prediction model based on the diagenesis samples and a total dimension of the diagenetic condition parameters; and training the initial diagenetic parameter prediction model with the diagenesis samples so as to obtain a trained diagenetic parameter prediction model. The present disclosure can obtain a diagenetic parameter prediction model by training with the existing diagenesis samples, thereby solving problems of large amount of calculation, high uncertainty and large deviations in the prediction of the diagenetic parameters, which leads to a low evaluation accuracy of reservoirs and limits the oil and gas exploration.

公开(公告)号：US20240019399A1

公开(公告)日：2024-01-18

申请号：US18025188

申请日：2022-06-28

Applicant: CHINA UNIVERSITY OF PETROLEUM

Inventor： Xin'an YUAN ,  Wei LI ,  Guoming CHEN ,  Xiaokang YIN ,  Xiao LI ,  Jianming ZHAO ,  Jianchao ZHAO

IPC: G01N27/82

CPC classification number: G01N27/82

Abstract: The present disclosure discloses a visual monitoring system of crack propagation of an underwater structure based on an alternating current field, and an alternating current field crack visual monitoring and evaluation method. The method includes that: a coil is used to design and manufacture an alternating current field monitoring sensor array, n alternating current field monitoring sensor component is formed by packaging, a power amplifier component is designed to provide an excitation signal for the alternating current field monitoring sensor component, a differential amplifier component is designed to amplify a weak sensing signal, a multiplexing component is designed to realize time-sharing multiplexing of multiple sensing signals, a signal amplification and filtering component is designed to further amplify and filter the signal, a wave detection component is designed to convert an AC signal into a DC signal, and excitation signal generation, multiplexing control signal output and signal acquisition are realized.

公开(公告)号：US11872505B2

公开(公告)日：2024-01-16

申请号：US17542403

申请日：2021-12-04

Applicant: China University of Petroleum (East China)

Inventor： Chunhua Liu ,  Ji Chen ,  Zhongxian Hao ,  Xinfu Liu ,  Feng Liu ,  Yongjun Shi ,  Wenhao Sha ,  Hui Cheng ,  Junling Tao

IPC: B01D46/00 ,  B01D19/00 ,  B01F25/452 ,  B01F23/20 ,  B01F35/221 ,  B01F25/431 ,  B01F35/21 ,  E21B43/34

CPC classification number: B01D19/0057 ,  B01D19/0063 ,  B01F23/29 ,  B01F25/43171 ,  B01F25/45221 ,  B01F35/2113 ,  B01F35/21112 ,  B01F35/2211 ,  B01F35/2213 ,  E21B43/34

Abstract: A separation device with two-stage gas-liquid mixture and conical spiral fields is provided. A first-stage uniform mixer performs first-stage gas-liquid crushing and uniform mixing process by an outer micropore ceramic pipe, a middle micropore ceramic pipe and an inner micropore ceramic pipe and crushes large bubbles in the gas-liquid two-phase flow into small bubbles. A second-stage uniform mixer performs second-stage gas-liquid crushing and uniform mixing process. A whirlpool-making gas collector adjusts the gas-liquid uniform mixing flow obtained after two-stage gas-liquid uniform mixing into hollow-core type high-speed two-phase spiral flow. A conical degasser performs gas-liquid efficient separation operation in a high-speed conical spiral field. A two-stage uniform mixing control system and a gas-liquid separation control system automatically regulate and control the flow and the flow pressure of the gas-liquid two-phase flow, the gas-liquid uniform mixing flow and degassed gas flow and degassed liquid flow.

公开(公告)号：US20240010944A1

公开(公告)日：2024-01-11

申请号：US18036192

申请日：2022-01-10

Applicant: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)

Inventor： Bin LIU ,  Yongming CHAI ,  Chenguang LIU ,  Yuan PAN ,  Yichuan LI ,  Kongyuan ZHANG ,  Yunqi LIU

IPC: C10M175/00 ,  B01J31/02 ,  B01J37/04 ,  B01J37/20 ,  C10G67/14

CPC classification number: C10M175/0016 ,  C10M175/0058 ,  B01J31/0239 ,  B01J37/04 ,  B01J37/20 ,  C10G67/14 ,  C10N2060/02

Abstract: A method for hydrotreating and recycling waste lubricating oil, the method comprising the two steps of slurry bed pre-hydrotreatment and deep hydrotreatment, specifically as follows: mechanical impurities are removed from waste lubricating oil, and then the oil is subjected to flash distillation to separate free water and a portion of light hydrocarbons; a bottom product of the flash distillation column is mixed with hydrogen and a self-sulfurizing oil-soluble transition metal catalyst, and then enters a slurry bed reactor for pre-hydrotreatment; a liquid product obtained by performing separation on a reaction effluent is subjected to hydrocyclone separation and solvent washing to remove solid residue, and then a pre-treated lubricating oil component is obtained; said component is mixed with hydrogen and then enters a hydrofining reactor, an isomerization-dewaxing reactor, and a supplementary refining reactor, connected in series, for hydrotreatment; and the reaction products are separated to obtain high-quality naphtha, diesel oil and a lubricating base oil. The method of the present invention has such advantages as simple processing procedures, a high oil liquid yield, good lubricating oil base oil quality, and can implement full-fraction resource utilization of waste lubricating oil. In addition, the oil-soluble catalyst features simple dispersion, no need for vulcanization, a small catalyst adding amount, high low-temperature hydrogenation activity, is capable of effectively preventing the coking that could occur during a process of preheating the waste lubricating oil, and ensures long-term stable operation of the device.

公开(公告)号：US20230408368A1

公开(公告)日：2023-12-21

申请号：US18242684

申请日：2023-09-06

Applicant: CHINA UNIVERSITY OF PETROLEUM

Inventor： Weiliang Wang ,  Yanfeng Geng ,  Li Sheng ,  Jinming Tian ,  Minglei Li

IPC: G01M7/02 ,  G01M7/04

CPC classification number: G01M7/025 ,  G01M7/045 ,  G01M7/022 ,  E21B7/04

Abstract: The present invention belongs to the technical field of oil field drilling, and relates to a ground testing device for a stabilized platform of a rotary steerable drilling tool. The ground testing device includes: a first supporting member and a second supporting member that are oppositely arranged, where the second supporting member is provided with a first mounting hole; a drill collar and a drill collar motor mounted outside the first supporting member, where a motor shaft of the drill collar motor penetrates the first supporting member and is connected to the drill collar, and a stabilized platform mounting assembly is arranged inside the drill collar; and a first vibration member connected to the drill collar and a second vibration member arranged in the first mounting hole in a sleeved manner, where an elastic member is arranged between the second vibration member and the second supporting member, and the elastic member is arranged on the second vibration member in a sleeving manner. An end portion of the first vibration member is provided with first vibration teeth, an end portion of the second vibration member is provided with second vibration teeth matching the first vibration teeth, and the second vibration member is provided with a first stop member which matches a second stop member arranged in the first mounting hole. According to the present invention, vibration, interference loading, and high-temperature simulation can be performed, and ground tests of different types of mechanical stabilized platforms are achieved.