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Patent Agency Ranking
1.发明申请公开(公告)号：US20200240243A1
公开(公告)日：2020-07-30
申请号：US16747294
申请日：2020-01-20
Applicant: SOUTHWEST PETROLEUM UNIVERSITY
Inventor： Haitao LI , Na WEI , Jinzhou ZHAO , Luling LI , Zhenjun CUI , Lin JIANG , Wantong SUN , Luyue YANG , Xi LI , Yinghe HONG , Yu QIAO
Abstract: A method for intelligently determining hydrate drilling and production risks based on fuzzy judgment. First classifying monitoring parameters in a hydrate drilling and production process into layers from top to bottom: a target layer, a primary evaluation factor layer and a secondary evaluation factor layer; then calculating relative weight values of each primary evaluation factor and each secondary evaluation factor contained therein; then connecting in series the relative weight values of the primary evaluation factors with the relative weight values of the secondary evaluation factors to obtain an overall weight value of the secondary evaluation factors; repeating the foregoing steps; finally constructing the overall weight value of each secondary evaluation factor of each risk into a column vector to obtain a comprehensive determining weight matrix of hydrate drilling and production risks, and determining the risks in the hydrate drilling and production process by combining monitoring parameter change vectors.
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2.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：US20200217193A1
公开(公告)日：2020-07-09
申请号：US16305895
申请日：2017-09-27
Applicant: SOUTHWEST PETROLEUM UNIVERSITY
Inventor： Gao LI , Yi FENG , Shunhui YANG , Yijian CHEN , Na WEI , Yingfeng MENG , Rui LI
Abstract: A mineshaft-stratum fracture coupled flowing simulation experiment device includes a simulated mineshaft flowing system, a simulated stratum system, a simulated fracture system and a data acquisition system. The simulated mineshaft flowing system includes simulated mineshaft, simulated drilling rod, drilling fluid storage tank, stirring motor, and drilling fluid screw pump. The simulated drilling rod is located in center of the simulated mineshaft. The stirring motor is provided in the drilling fluid storage tank. The drilling fluid screw pump is connected to an inlet end of the simulated drilling rod through the drilling fluid storage tank. The simulated stratum system includes simulated stratum, clean water storage tank, separation tank, gas storage tank, gas air-compressor, and clean water screw pump. The gas storage tank is connected to the gas air-compressor and is connected to the simulated stratum through a gas pressure regulating valve.
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4.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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