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1.发明授权公开(公告)号：US12085483B2
公开(公告)日：2024-09-10
申请号：US17774031
申请日：2020-09-24
申请人： CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) , PIPECHINA SOUTH CHINA COMPANY , GUANGDONG SOUTH CHINA INTELLIGENT PIPELINE RESEARCH INSTITUTE
发明人： Cuiwei Liu , Zhongshan Tian , Yuxing Li , Shaochuan Lai , Wen Yang , Gang Liu , Wubin Lin , Chen Zhang
摘要： A method of leak detection for oil and gas pipeline based on excitation response and system thereof includes: applying an active excitation signal (a pressure pulse directly input by human) or a passive excitation signal (a pressure fluctuation caused by opening and closing valves, etc.) to an oil and gas pipeline with existing leakage points, the excitation signal is reflected at the pipeline boundary and the leakage, and the reflected pressure wave continues to propagate to upstream and downstream, and finally is collected by the dynamic pressure transducer, then the existing leakage of the pipeline is detected and positioned by analyzing the transient response signal and the reflected pressure wave of leakage signal.
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公开(公告)号：US12078054B2
公开(公告)日：2024-09-03
申请号：US18599325
申请日：2024-03-08
发明人： Bangtang Yin , Chi Zhang , Baojiang Sun , Zhiyuan Wang , Xuliang Zhang , Yonghai Gao , Xiaohui Sun , Wei Zhang
IPC分类号： E21B47/10
CPC分类号： E21B47/10 , E21B2200/20
摘要： An experimental device and method for co-existence of overflow and lost circulation in a fractured formation during drilling of a deviated well are provided. An inner cavity of an outer pipe is provided with an inner pipe to form a deviated casing. An upper side of the outer pipe is provided with a mixture outlet. A middle-lower side of the outer pipe is provided with a leakage port and two overflow ports. The gap width can be changed by adjusting a bolt and a support block to be compatible with different types of fracture models. A gas injection system includes an air compressor and a gas flowmeter. An upper port of a liquid injection system is connected to a joint arranged at upper ends of the inner pipe and outer pipe through a water pump, a liquid flowmeter and a liquid regulating valve.
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公开(公告)号：US12071849B2
公开(公告)日：2024-08-27
申请号：US18620194
申请日：2024-03-28
发明人： Bangtang Yin , Tianbao Ding , Baojiang Sun , Zhiyuan Wang , Yonghai Gao , Hao Li , Xiaohui Sun , Xuerui Wang
CPC分类号： E21B49/008 , E21B41/00 , E21B2200/20 , G01V2210/64 , G06F30/20
摘要： A device for simulating gas intrusion and bullheading in a wellbore under different inclinations is provided, which includes a wellbore outer pipe with an inner pipe and an LED light source therein. An outer wall of the wellbore outer pipe is provided with one or more inlets. A bubble generator is arranged outside a lower plug, and extends through the lower plug via an air inlet needle into the inner cavity of the wellbore outer pipe. An input end of the bubble generator is connected to an air compressor. A lower outlet of the wellbore outer pipe is connected to an inlet of a formation unit through a pipeline and a back pressure valve. A simulating method using such device is also provided.
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公开(公告)号：US12043742B2
公开(公告)日：2024-07-23
申请号：US17822764
申请日：2022-08-26
发明人： Yingrui Bai , Jinsheng Sun , Kaihe Lv , Guancheng Jiang , Rongchao Cheng , Weian Huang , Jintang Wang , Jingping Liu , Xianbin Huang , Jiafeng Jin , Jian Li , Shenglong Shi
IPC分类号： C08L93/04
CPC分类号： C08L93/04 , C08L2205/03
摘要： An oil-soluble thermosensitive resin lost circulation material for protecting a reservoir includes the following raw materials in parts by weight: 40-60 parts of resin matrix, 15-40 parts of modified asphalt, 5-12 parts of viscosity modifier, 2-5 parts of cross-linking agent, 6-15 parts of softening point modifier, and 1-3 parts of dispersant; it further provides a method for preparing the resin lost circulation material; the resin lost circulation material can melt and adhere in different temperature ranges, rapid plugging is realized, and the plugging time is long; the oil-soluble thermosensitive resin lost circulation material can be dissolved by oil flow during oil well production, so that the reservoir permeability is recovered, so as to achieve the purpose of protecting the hydrocarbon reservoir.
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公开(公告)号：US20240230935A9
公开(公告)日：2024-07-11
申请号：US18492896
申请日：2023-10-24
发明人： Qizhen DU , Shihao ZHOU , Zhaoshun LIU , Wenhao LYU , Li-Yun FU
摘要： 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.
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公开(公告)号：US20240209727A1
公开(公告)日：2024-06-27
申请号：US18599325
申请日：2024-03-08
发明人： Bangtang YIN , Chi ZHANG , Baojiang SUN , Zhiyuan WANG , Xuliang ZHANG , Yonghai GAO , Xiaohui SUN , Wei ZHANG
IPC分类号： E21B47/10
CPC分类号： E21B47/10 , E21B2200/20
摘要： An experimental device and method for co-existence of overflow and lost circulation in a fractured formation during drilling of a deviated well are provided. An inner cavity of an outer pipe is provided with an inner pipe to form a deviated casing. An upper side of the outer pipe is provided with a mixture outlet. A middle-lower side of the outer pipe is provided with a leakage port and two overflow ports. The gap width can be changed by adjusting a bolt and a support block to be compatible with different types of fracture models. A gas injection system includes an air compressor and a gas flowmeter. An upper port of a liquid injection system is connected to a joint arranged at upper ends of the inner pipe and outer pipe through a water pump, a liquid flowmeter and a liquid regulating valve.
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公开(公告)号：US12019206B1
公开(公告)日：2024-06-25
申请号：US18392659
申请日：2023-12-21
发明人： Tong Li , Yongsheng Ma , Caili Dai , Guang Zhao , Qian Li , Daqian Zeng , Ning Sun
摘要： The present discloses a simulation device and simulation method for liquid sulfur-gas-water multiphase flow and use thereof in a high-temperature and high-pressure gas reservoir with high sulfur content.
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8.发明公开公开(公告)号：US20240200431A1
公开(公告)日：2024-06-20
申请号：US18418301
申请日：2024-01-21
发明人： Jian Hou , Kang Zhou , Shuai Liu , Zhibin An , Qingjun Du , Bei Wei , Yongge Liu
IPC分类号： E21B43/20 , G06F30/20 , G06F111/10
CPC分类号： E21B43/20 , G06F30/20 , G06F2111/10
摘要： A method and system for predicting water flooding recovery of fault block reservoirs considering a whole process optimization includes: determining influencing factors in water flooding recovery of fault block reservoirs; screening master parameters of the water flooding recovery of the fault block reservoirs; determining a single-factor correlation between the water flooding recovery of the fault block reservoirs and the master parameters; designing multi-factor orthogonal experimental schemes; performing a whole-process water flooding optimization for each of the experimental schemes including separate-layer injection and production, well-type conversion, and injection and production adjustment, to obtain the maximum water flooding recovery; and determining a prediction model of the water flooding recovery of the fault block reservoirs using least square method based on results of the whole process optimization of orthogonal experiments, further obtaining a prediction model of the water flooding recovery of the fault block reservoirs.
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公开(公告)号：US12000222B2
公开(公告)日：2024-06-04
申请号：US17767929
申请日：2020-09-07
申请人： CNPC BOHAI DRILING ENGINEERING COMPANY LIMITED , CHINA NATIONAL PETROLEUM CORPORATION , CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
发明人： Jinshan Ma , Baojiang Sun , Jintao Qi , Liming Wei , Fengliang Xi , Gang Liu , Zhiyuan Wang , Xing Wang , Haichao Xu , Long Ma , Jiacui Luan , Lei Chen , Guodong Chen , Yuanlin Zhao , Zisen Yang , Qiang Huang , Menglei Ma , Xiantao Meng , Hongyin Wei
CPC分类号： E21B21/08 , E21B21/01 , E21B21/106 , E21B34/16 , F15B1/02 , F15B1/021 , F15B1/027 , F15B1/04 , G05D16/16
摘要： A pressure compensation device with an accumulator group for controlled pressure drilling includes an electrical flat valve, a check valve, an accumulator group, a flanged pup joint and a support base. The electrical flat valve is connected to the check valve and is mounted on a top surface of the support base. The accumulator group mounted on the whole support base is a pre-storage pressure compensation device for controlled pressure drilling, and is located at a downstream position of the check valve. The liquid inlet end of the accumulator group is connected to the check valve, and the liquid discharge end is connected to the flanged pup joint.
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10.发明公开公开(公告)号：US20240175340A1
公开(公告)日：2024-05-30
申请号：US18226472
申请日：2023-07-26
发明人： Sen WANG , Kun WANG , Qihong FENG , Shunming LI , Yijing DU , Zheng WU , Xiang WANG , Jiyuan ZHANG , Xianmin ZHANG
CPC分类号： E21B43/162 , G01N15/0826 , G06F30/28 , G06F2113/08
摘要： The present disclosure relates to a method and system for predicting a time-varying principle of waterflooding oil reservoir formation parameters. Firstly, a T2 spectrum-pore size relation model is built according to a measured pore size distribution curve and a measured T2 spectrum. A T2 spectrum of a rock sample at different water injection amounts during a waterflooding physical simulation experiment is acquired. The acquired T2 spectrum at different water injection amounts is then converted into a pore size distribution at different water injection amounts, and a pore network model at different water injection amounts is built with the pore size distribution. Oil-water two-phase flow simulation is performed, and a corresponding oil-water two-phase relative permeability curve of the rock sample at different pore volume (PV) multiples is obtained eventually. The oil-water two-phase relative permeability curve is the formation parameters in the waterflooding oil reservoir.
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