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公开(公告)号：US20250156612A1
公开(公告)日：2025-05-15
申请号：US18949193
申请日：2024-11-15
Applicant: China University of Petroleum (East China)
Inventor： Jianchun XU , Caojie LI , Shuxia LI , Shuyang LIU , Xiaopu WANG
Abstract: Provided is a simulation method and system of joint exploitation of natural gas hydrate, shallow gas and deep-seated gas. The method includes: constructing a simulation model of joint exploitation of a shallow gas layer and a hydrate layer, including setting and meshing the shallow gas layer and the hydrate layer, constructing the simulation model of joint exploitation by setting a formation parameter and a production parameter, and solving the model to acquire productivity data; constructing a simulation model of joint exploitation of the shallow gas layer, the deep-seated gas layer and the hydrate layer, including setting and meshing the shallow gas layer, the deep-seated gas layer and the hydrate layer, constructing a simulation model of joint exploitation of the shallow gas layer, the deep-seated gas layer and the hydrate layer by setting the formation parameter and the production parameter, and solving the model to acquire productivity data.
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公开(公告)号：US12276191B2
公开(公告)日：2025-04-15
申请号：US18741708
申请日：2024-06-12
Applicant: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) , Qingdao Zhongshi Intelligent Drilling Techology Co. LTD
Inventor： Hualin Liao , Yuhang He , Wenlong Niu , Jilei Niu , Huajian Wang , Yuntao Liao , Yucai Shi , Jinkai Chen
Abstract: An electromagnetic reversal downhole pressure intensifier is provided, including a pressure intensifier and a drill bit. A nozzle and a bit water way are arranged on the drill bit, the pressure intensifier includes an electromagnetic valve seat, a pressurizing chamber, and a discharge flow pup joint; an electromagnetic valve is arranged in the electromagnetic valve seat, and an electromagnetic valve seat flow channel is arranged on the electromagnetic valve seat; a plunger is arranged in the pressurizing chamber, and the upper end of the plunger separates the inner chamber of the pressurizing chamber into a non-rod chamber and a rod chamber; a conveying pipe is arranged in the discharge flow pup joint, and a flow channel is formed between the conveying pipe and the discharge flow pup joint; the drill bit is connected to the discharge flow pup joint.
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公开(公告)号：US20250116163A1
公开(公告)日：2025-04-10
申请号：US18981584
申请日：2024-12-15
Applicant: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Inventor： Bangtang YIN , Kai FENG , Baojiang SUN , Zhiyuan WANG , Yonghai GAO , Hao LI , Jianbo ZHANG , Guizhen XIN
Abstract: A well-killing system for ultra-deep well drilling with co-existence of overflow and lost circulation is provided. An upper part of a wellhead blowout preventer is connected to a first mud pump and a lost circulation material mud tank through a pipeline, a first three-way control valve, and a second three-way control valve. A lower port of the second three-way control valve is connected to a second mud pump and a mud pit. A lower port of the first three-way control valve is connected to a first well-killing fluid tank and a second well-killing fluid tank. A gas-liquid separation tank is connected to a side of a wellhead device. A first pressure sensor and a first flowmeter are provided on a left port of the first three-way control valve. A second pressure sensor and a second flowmeter are provided at a left port of a third three-way control valve.
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公开(公告)号：US20250034039A1
公开(公告)日：2025-01-30
申请号：US18911345
申请日：2024-10-10
Applicant: China University of Petroleum (East China)
Inventor： Xueyu PANG , Guodong CHENG , Chuangchuang WANG , Jiankun QIN , Kaihe LV , Jinsheng SUN
IPC: C04B7/24
Abstract: The present application pertains to the cementing engineering technical field and reveals a cement system for ultra-high temperature resistance with excellent pumpability performance, as well as its preparation method. This cement system comprises a solid component and a liquid component. The solid component is comprised of a weight percentage of 14-70% cement, 3-80% silica sand, 3-80% fly ash, and 3-80% slag powder. The liquid component includes water and additives. This high-temperature resistant cement system exhibits stable performance with a thickening time generally exceeding 6 hours. The initial consistency ranges from 23.8 Bc to 33.6 Bc, exhibiting good pumpability performance. Furthermore, the system maintains stable strength and water permeability during the curing periods from 2 days to 90 days. The high-temperature resistant cementing system provided by this application can overcome the problems of long-term strength retrogression and address issues associated with high initial consistency, pumping difficulty, and short thickening time.
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公开(公告)号：US20250027184A1
公开(公告)日：2025-01-23
申请号：US18754272
申请日：2024-06-26
Applicant: CHINA UNIVERSITY OF PETROLEUM-BEIJING
Inventor： Guoyong Huang , Jiawei Wen , Erkang Feng , Wenjie Zhang , Mingshuai Wu , Tongjun Shen
IPC: C22B34/12 , C22B1/02 , C22B7/00 , H01M10/0525
Abstract: A method for preparing self-doped titanium-niobium oxide negative electrode material using a waste titanium dioxide carrier includes preparing self-doped TiNb2O7 negative electrode material for lithium-ion battery by using waste titanium dioxide carrier comprises the following steps: S1. converting a waste titanium dioxide carrier into TiO2 powder with the Ti content of ≥95% and the Al content of 0.1-4.0%, based on the weight of oxide, respectively; and S2. mixing the TiO2 powder and Nb2O5 powder to form a mixture, roasting the mixture, and collecting the generated Al self-doped TiNb2O7, so as to obtain the self-doped TiNb2O7 negative electrode material. According to the method disclosed by the present invention, impurities represented by TiO2 and Al2O3 in the waste titanium dioxide carrier can be directly recycled, a self-doped TiNb2O7 (titanium niobium oxide) negative electrode material.
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Patent Agency Ranking
公开(公告)号：US12196722B2
公开(公告)日：2025-01-14
申请号：US17777594
申请日：2020-11-25
Applicant: China University of Petroleum-Beijing
Inventor： Chengyun Ma , Yongcun Feng , Jingen Deng
Abstract: A dynamic crack leaking stoppage evaluation experiment device includes a crack simulation experiment instrument having a dynamic crack simulation mechanism. The dynamic crack leaking stoppage evaluation experiment device can simulate a dynamic change process of a crack from a closed state to an open state. An experiment method can be applied to study a variation range of the width of the crack that have been subjected to self-adaptive leaking stoppage with various combinations of leaking stoppage materials and under different increments, and the method can also be applied to quantitatively study on effecting patterns of rheological parameters and hydraulic parameters of well drilling fluid on stability of a leaking stoppage layer in the dynamic crack, so that enabled is not only simulation of leaking stoppage process of a dynamic crack, but also real-time monitoring and evaluation on leaking stoppage effect and leaking stoppage location inside the dynamic crack.
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公开(公告)号：US20240413353A1
公开(公告)日：2024-12-12
申请号：US18496198
申请日：2023-10-27
Applicant: CHINA UNIVERSITY OF PETROLEUM-BEIJING
Inventor： Guoyong Huang , Jiawei Wen , Maolin Tian , Jian Cui , Xueli Wang , Wenjie Zhang , Mingshuai Wu , Tongjun Shen
IPC: H01M4/92
Abstract: A method includes 1) removal oil from aluminum-based platinum rhenium-containing spent catalysts; 2) mixing the spent catalyst and sodium hydroxide powder and heating in an oxygen-free environment to obtain a clinker; 3) leaching the clinker in a weakly alkaline aqueous solution to obtain a first leach solution containing the elements Al and Re and a first leach residue containing Pt and Re; 4) converting the first leaching solution into a sodium meta-aluminate solution and a sodium perrhenate solution; 5) adding an aqueous solution of an acidic reagent and an aqueous solution of an oxidizing reagent to the first leaching residue for oxidizing acid leaching to obtain a second leaching solution containing precursors including platinum and rhenium; 6) reducing and loading the precursors on a carbon carrier to obtain the modified platinum based catalyst for fuel cell. The method enables the recovery of Re and Al elements from spent catalysts.
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公开(公告)号：US20240386167A1
公开(公告)日：2024-11-21
申请号：US18334721
申请日：2023-06-14
Applicant: CHINA UNIVERSITY OF PETROLEUM (east CHINA)
Inventor： Depeng KONG , Rongqi PENG , Ping PING
IPC: G06F30/27
Abstract: The invention discloses a modeling method for energy storage tank explosion venting to prevent thermal runaway gas explosion in lithium-ion batteries, which relates to the technical field of lithium-ion battery energy storage tank design, including the following steps: 1. Determine lithium-ion battery type to obtain component classification and ratio of mixed gas produced after thermal runaway; 2. Calculate laminar burning velocity of mixed gas and thermophysical parameters using FreeFlam 1D combustion model; 3. Set coupling boundary of venting plate, divide premixed area inside the tank and the air area outside the tank, establish geometric modeling and grid of battery energy storage tank, and establish three-dimensional combustion process equation according to the boundary conditions; 4. Solve three-dimensional combustion process equation to obtain the evolution characteristics of overpressure, temperature, and wind speed in the internal and external flow fields of energy storage tank.
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公开(公告)号：US20240385103A1
公开(公告)日：2024-11-21
申请号：US18260254
申请日：2023-03-10
Applicant: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Inventor： Zhiyuan WANG , Jihao PEI , Baojiang SUN , Zhengfeng SHAN , Longqiao CHEN , Jianbo ZHANG , Shikun TONG
Abstract: A microscopic and macroscopic evaluation method for a dual-effect hydrate inhibitor is provided. The method is applicable to the performance evaluation of traditional thermodynamic inhibitors and kinetic inhibitors. The present invention comprehensively evaluates the dual-effect hydrate inhibitor microscopically and macroscopically through a microscopic evaluation device and a macroscopic evaluation device, thereby more intuitively and efficiently screening out the dual-effect inhibitor with excellent performance. The present invention explains the action mechanism of the dual-effect inhibitor microscopically, accurately evaluate the effects of the inhibitor in two aspects of particle aggregation and particle adhesion, and provide a theoretical basis for screening the dual-effect inhibitor. Moreover, the present invention can verify the screened inhibitor macroscopically by using a flow evaluation device close to a field working condition to obtain the action effects of the dual-effect inhibitor under different production parameters, so that the comprehensive and multi-angle performance evaluation of the dual-effect inhibitor is achieved.
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10.发明授权公开(公告)号：US12129432B1
公开(公告)日：2024-10-29
申请号：US18372581
申请日：2023-09-25
Applicant: CHINA UNIVERSITY OF PETROLEUM-BEIJING
Inventor： Jirui Hou , Infant Raj , Yuchen Wen , Zhuo Lu , Lixiao Xiao
CPC classification number: C09K8/584 , C09C1/0003 , C09C3/08 , C09C3/10 , C09K8/588 , E21B43/16 , C01P2002/82 , C01P2004/03 , C01P2004/24 , C09K2208/10
Abstract: A functionalized molybdenum disulfide nanosheet and its preparation method and application, where the preparation method includes steps below: mixing a solvent, 1 part by weight of lipoic acid and 5-10 parts by weight of a first compound for 2-4 h to obtain a mixture; adding 0.05-0.1 parts by weight of 1-hydroxybenzotriazole into the mixture, mixing for 24-48 h, and drying to obtain an intermediate product; performing ultrasonic treatment or heat treatment on a raw material-solution system to obtain a functionalized molybdenum disulfide nanosheet, where the raw material-solution system includes 5-10 parts by weight of the molybdenum disulfide nanosheet, 1 part by weight of the intermediate product and saline water, the first compound contains an ethylene oxide group and an alkylamine chain, the number of carbon atoms in the alkylamine chain is 12-18, and the number of the ethylene oxide group is 2-15.
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