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1.发明公开公开(公告)号：US20240300811A1
公开(公告)日：2024-09-12
申请号：US18589455
申请日：2024-02-28
Applicant: Southwest Petroleum University
Inventor： Chaowen WANG , Qunchao DING , Liehui ZHANG , Chunsheng JIA , Xiaolong PENG , Yulong ZHAO , Suyang ZHU , Peng DENG
IPC: C01B3/36
CPC classification number: C01B3/36 , C01B2203/0872 , C01B2203/1241 , C01B2203/1258 , C01B2203/1619 , C01B2203/1633
Abstract: An experimental simulation device for hydrogen production by in-situ conversion of a gas reservoir comprises a gas source, a plurality of groups of reactors and an analysis monitoring device, wherein the gas source comprises a methane tank, a helium tank, an oxygen tank and a water vapor generator, the gas source can supply gas to the reactors separately, the in-situ hydrogen production is simulated in the reactors; and meanwhile, a use method of the experimental simulation device for hydrogen production by in-situ conversion of the gas reservoir can achieve accurate simulation of the multi-stage in-situ hydrogen production and multi-well group cooperative hydrogen production processes of different types of gas reservoirs in actual production by adjusting connection states of the plurality of groups of reactors. The experimental result in the present invention can be closer to the actual production.
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2.发明公开公开(公告)号：US20240209733A1
公开(公告)日：2024-06-27
申请号：US18355372
申请日：2023-07-19
Applicant: Southwest Petroleum University
Inventor： Yulong ZHAO , Xiangyu LIU , Liehui ZHANG , Xiao HE , Jianfa WU , Zhidong YANG , Jie LI , Bin ZENG , Jian ZHENG , Hongxi LI , Chengzhong BU , Jun PAN , Ruihan ZHANG , Tao ZHANG , Ye TIAN , Huiying TANG , Weihua CHEN , Haoran HU , Cheng CHANG , Deliang ZHANG
CPC classification number: E21B49/00 , G01V11/002
Abstract: The present invention discloses a method, equipment, and readable storage medium for tracking and evaluating the life cycle EUR of horizontal wells, and relates to the field of oil and gas development technology. The present invention divides the life cycle stages of fractured horizontal wells in unconventional oil and gas reservoirs, provides corresponding EUR evaluation steps for different life cycle stages based on the production performance characteristics of fractured horizontal wells in unconventional oil and gas reservoirs in the drilling and fracturing stage, extraction and testing stage, rapid production decline stage, and low pressure and small volume production stage, and establishes the EUR tracking and evaluation process of fractured horizontal wells in unconventional oil and gas reservoirs throughout their life cycle from drilling to abandonment.
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3.发明公开公开(公告)号：US20240344428A1
公开(公告)日：2024-10-17
申请号：US18412729
申请日：2024-01-15
Applicant: Southwest Petroleum University
Inventor： Cheng CAO , Zehao XIE , Liehui ZHANG , Yulong ZHAO , Shaomu WEN , Xian PENG , Longxin LI , Ye TIAN , Xiang ZHOU
CPC classification number: E21B41/0064 , E21B43/30 , E21B2200/20
Abstract: An optimized design method and system for carbon dioxide geological storage parameters of a depleted gas reservoir is provided, including: collecting data of a depleted gas reservoir in which carbon dioxide geological storage is to be carried out, and establishing a numerical simulation model of the depleted gas reservoir; carrying out fitting of production performance history to obtain current state information; simulating and predicting production performance data after carbon dioxide injection into depleted oil and gas reservoirs under different combinations of well pattern parameters and injection parameters using a numerical simulation technology; calculating a parameter value representing a uniform pressure rise according to the production performance data; updating well pattern parameters and injection parameters using a genetic algorithm; repeating above steps until an iterative convergence condition is met; and determining an optimal combination of carbon dioxide injection process parameters according to an output optimal target value.
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Patent Agency Ranking
4.发明申请公开(公告)号：US20200291754A1
公开(公告)日：2020-09-17
申请号：US16604109
申请日：2018-11-20
Applicant: SouthWest Petroleum University
Inventor： Jinzhou ZHAO , Na WEI , Haitao LI , Liehui ZHANG , Shouwei ZHOU , Qingping LI , Wantong SUN
Abstract: A hydrate solid-state fluidization mining method and system under an underbalanced reverse circulation condition are used for solid-state fluidization mining on a non-rock-forming weak-cementation natural gas hydrate layer in the ocean. Equipment includes a ground equipment system and an underwater equipment system. The construction procedure includes an earlier-stage construction process, pilot hole drilling construction process, reverse circulation jet fragmentation process, underbalanced reverse circulation fragment recovery process and silt backfilling process. Natural gas hydrates in the seafloor are mined through an underbalanced reverse circulation method. Problems such as shaft safety, production control and environmental risks faced by conventional natural gas hydrate mining methods such as depressurization, heat injection, agent injection and replacement are effectively solved. By using the method, the weak-cementation non-rock-forming natural gas hydrates in the seafloor can be mined in environment-friendly, efficient, safe and economical modes, more energy resources can be provided, and energy shortage dilemmas are solved.
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公开(公告)号：US20230229830A1
公开(公告)日：2023-07-20
申请号：US17787597
申请日：2022-03-31
Applicant: Southwest Petroleum University
Inventor： Yulong ZHAO , Liehui ZHANG , Ruihan ZHANG , Bin ZENG , Huiying TANG , Jun PAN , Xiao HE , Zhidong YANG
IPC: G06F30/23 , E21B43/30 , E21B43/267
CPC classification number: G06F30/23 , E21B43/305 , E21B43/267 , E21B2200/20 , G06F2111/10
Abstract: A method for coupling hydraulic fracture network extension and production performance of a horizontal well in an unconventional oil and gas reservoir includes: establishing a complex hydraulic fracture network model of a fractured horizontal well in an unconventional oil and gas reservoir based on a fracture extension theory; constructing three-dimensional three-phase mathematical models of seepage for the fractured horizontal well based on an embedded discrete fracture model; and constructing a fully implicit numerical calculation model by a finite difference method through three-dimensional orthogonal grids, and solving iteratively, thereby accurately predicting a production performance characteristic of the fractured horizontal well in the unconventional oil and gas reservoir. The method combines a fracture extension model with a production performance prediction model to realize the coupled simulation and prediction of the hydraulic fracture network extension and production performance of the horizontal well in the unconventional oil and gas reservoir.
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6.发明申请公开(公告)号：US20200300066A1
公开(公告)日：2020-09-24
申请号：US16604106
申请日：2018-11-20
Applicant: SouthWest Petroleum University
Inventor： Jinzhou ZHAO , Na WEI , Haitao LI , Liehui ZHANG , Shouwei ZHOU , Qingping LI , Wantong SUN
Abstract: A natural gas hydrate solid-state fluidization mining method and system under an underbalanced positive circulation condition, used for performing solid-state fluidization mining on a non-rock-forming weak-cementation natural gas hydrate layer in the ocean. Equipment includes a ground equipment system and an underwater equipment system. The construction procedure has an earlier-stage construction process, underbalanced hydrate solid-state fluidization mining construction process and silt backfilling process. Natural gas hydrates in the seafloor are mined through an underbalanced positive circulation method, and problems such as shaft safety, production control and environmental risks faced by conventional natural gas hydrate mining methods such as depressurization, heat injection, agent injection and replacement are effectively solved. By using the natural gas hydrate solid-state fluidization mining method weak-cementation non-rock-forming natural gas hydrates in the seafloor can be mined in environment-friendly, efficient, safe and economical modes, more energy resources are provided, and energy shortage dilemmas are solved.
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公开(公告)号：US20200290052A1
公开(公告)日：2020-09-17
申请号：US16604100
申请日：2018-11-20
Applicant: SouthWest Petroleum University
Inventor： Jinzhou ZHAO , Na WEI , Chunquan LIU , Kaisong WU , Liehui ZHANG , Shouwei ZHOU , Haitao LI , Wantong SUN
Abstract: A crushing system for large-size natural gas hydrate rock samples, which mainly includes a crushing and stirring control subsystem, crushing and stirring execution subsystem and hydrate preparation subsystem. Full automatic control to parameter acquisition and experimental process is achieved by utilizing modern automation technology, including the function of automatically crushing the large-size natural gas hydrate rock samples and also monitoring, collecting and storing the drilling pressure, the torque and the internal furnace pressure and temperature parameters during the crushing process in real time, to provide reliable guarantee for the follow-up researches on crushing mechanism, crushing efficiency, drilling parameter optimization, rock crushing ability evaluation of a crushing tool and the like of the large-size natural gas hydrate rock samples and necessary experimental verification means for optimization of on-site exploiting construction conditions of natural gas hydrate.
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8.发明申请公开(公告)号：US20200062881A1
公开(公告)日：2020-02-27
申请号：US16069167
申请日：2017-05-22
Applicant: SOUTHWEST PETROLEUM UNIVERSITY
Inventor： Yongming LI , Qiang REN , Jinzhou ZHAO , Liehui ZHANG
IPC: C08F283/06 , C09K8/584 , C09K8/72
Abstract: The present invention provides a surface-active two-tailed hydrophobic associated polymer and a preparation method thereof. The surface-active two-tailed hydrophobic associated polymer is prepared using a micellar free radical copolymerization method including: adding a surfactant sodium lauryl sulfate and a hydrophobic monomer N-phenethyl-N-alkyl (methyl) acrylamide or N-benzyl-N-alkyl (methyl) acrylamide into an aqueous solution containing acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, and surface-active macromonomer polyoxyethylene lauryl ether (methyl) acrylate, wherein the surfactant is used to solubilize the hydrophobic monomer in the formed micelle; adjusting pH to 6-8 with sodium hydroxide, and copolymerizing the hydrophobic monomer and a water-soluble monomer by means of photoinitiation. The properties, such as viscosifying property, temperature resistance, salt resistance and hydrolysis resistance, of the hydrophobic associated polymer can be effectively improved. The preparation method is reliable in principle and simple in operation and has a wide market prospect.
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