Patents by Inventor Ang Luo
Ang Luo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11767746Abstract: An integrated wellhead device for filtering injected and produced gases is provided. The wellhead device comprises a horizontal tank body that is internally provided with an injected gas filtering system and a produced gas filtering system. The injected gas filtering system is internally provided with an oxygen removal chamber. A gas inlet of the injected gas filtering system is connected with an injected high-pressure gas source, and a gas outlet of the injected gas filtering system is connected with a gas injection well casing of Christmas tree. The produced gas filtering system is internally equipped with an oxygen removal chamber, a sulfur removal chamber and a carbon dioxide removal chamber. A gas inlet of the produced gas filtering system is connected with a gas production tubing of the Christmas tree, and a gas outlet of the produced gas filtering system is connected with a produced gas transmission pipe.Type: GrantFiled: October 28, 2021Date of Patent: September 26, 2023Assignee: Southwest Petroleum UniversityInventors: Yongming Li, Tai Chang, Yu Peng, Yibo Li, Ang Luo, Shuxuan Li
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Publication number: 20230273339Abstract: The present invention discloses a method for determining the stimulated reservoir volume of horizontal wells by coupling reservoir flow, comprising the following steps: establishing a reservoir grid based on the reservoir geological model of the target well and adding an initial fracture unit; calculating the stress intensity factor at the fracture tip, judging the fracture initiation and determining the total number of fracture units; calculating the fluid pressure of fracture units, the pore pressure distribution and water saturation distribution of the reservoir matrix and micro-fractures during hydraulic fracturing; working out the stimulated reservoir volume of the horizontal well according to the fracture parameters, pressure distribution and water saturation distribution in shale reservoirs. The present invention can simulate fracture propagation, fracturing fluid leak-off and reservoir fluid flow in the whole fracturing process, determine the stimulated reservoir volume of horizontal wells.Type: ApplicationFiled: January 6, 2023Publication date: August 31, 2023Applicant: Southwest Petroleum UniversityInventors: Yongming LI, Ang LUO, Yu PENG, Xuefeng YANG, Cheng CHANG
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Patent number: 11604132Abstract: The present invention discloses a testing device and evaluation method for sensitivity damage of core permeability tensor, comprising the following steps: first, obtain the cubic experimental rock samples and calculate the formation pressure distribution based on the reservoir geological data; then simulate the true stress and strain state of core in formation through triaxial stress loading, design the acid liquor, alkali liquor, inorganic salt solution, formation water and different displacement rates for displacement experiments, realize the determination of core three-directional permeability tensor under the same experimental conditions through three-directional sequential displacement, process the experimental data through Darcy's law, and calculate the damage degree of core permeability tensor under different sensitivity conditions of triaxial stress state; finally, identify the real-time flow state of fluid through permeability tensor synthesis, and realize the accurate and efficient testing and evaluType: GrantFiled: June 10, 2022Date of Patent: March 14, 2023Assignee: Southwest Petroleum UniversityInventors: Yu Peng, Yitao Huang, Yongming Li, Ang Luo, Pengjun Shi
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Patent number: 11598205Abstract: The present invention discloses a method for comprehensive evaluation of shale fracability under the geology-engineering “double-track” system, comprising the following steps: S1: Divide the target horizontal fracturing interval into multiple sampling sections; S2: Establish the reservoir property evaluation factor of each sampling section, and calculate the geological evaluation index of the target horizontal fracturing interval according to the reservoir property evaluation factor of each sampling section; S3: Establish the brittleness factor, natural fracture factor and natural fracture opening factor of each sampling section, and then establish the engineering evaluation index of each sampling section according to these factors; S4: Calculate the engineering evaluation index of the target horizontal fracturing interval according to the engineering evaluation factor of each sampling section; S5: Evaluate the fracability of the target horizontal fracturing interval according to the geological evaluation indType: GrantFiled: June 10, 2022Date of Patent: March 7, 2023Assignee: Southwest Petroleum UniversityInventors: Yu Peng, Ang Luo, Yongming Li, Pengjun Shi, Hu Jia, Cheng Chang
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Publication number: 20230058285Abstract: An integrated wellhead device for filtering injected and produced gases is provided by the present disclosure, comprising a horizontal tank body that is internally provided with an injected gas filtering system and a produced gas filtering system, wherein the injected gas filtering system is internally provided with an oxygen removal chamber, the gas inlet of the injected gas filtering system is connected with an injected high-pressure gas source, and the gas outlet of the injected gas filtering system is connected with a gas injection well casing of Christmas tree, the produced gas filtering system is internally equipped with an oxygen removal chamber, a sulfur removal chamber and a carbon dioxide removal chamber, the gas inlet of the produced gas filtering system is connected with a gas production tubing of the Christmas tree, and the gas outlet of the produced gas filtering system is connected with a produced gas transmission pipe.Type: ApplicationFiled: October 28, 2021Publication date: February 23, 2023Applicant: Southwest Petroleum UniversityInventors: Yongming LI, Tai CHANG, Yu PENG, Yibo LI, Ang LUO, Shuxuan LI
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Patent number: 11280172Abstract: The present invention discloses a method for evaluating and preventing creep damage to conductivity of hydraulic fracture in gas reservoirs, comprising: (1) selecting a rock sample of target reservoir for creep experiment, and plotting ?-t curve of the rock sample during creep; (2) fitting the fractional Kelvin model with the ?-t curve of the rock sample during creep; (3) calculating the conductivity and permeability of hydraulic fracture considering creep damage; (4) numerically solving the productivity model, calculating the cumulative gas production of the gas well produced up to time t, and calculating the creep damage rate for cumulative production of the gas well; (5) repeating Steps (3) to (4), calculating the creep damage rate for cumulative production for the cases of hydraulic fracture sanding concentration N of 5 kg/m2, 7.5 kg/m2, 10 kg/m2, 12.5 kg/m2 and 15 kg/m2 respectively, plotting the creep damage chart of cumulative production.Type: GrantFiled: October 29, 2021Date of Patent: March 22, 2022Assignee: SOUTHWEST PETROLEUM UNIVERSITYInventors: Yu Peng, Ang Luo, Yongming Li, Qing Yin, Hu Jia, Xiyu Chen
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Publication number: 20220049591Abstract: The present invention discloses a method for evaluating and preventing creep damage to conductivity of hydraulic fracture in gas reservoirs, comprising: (1) selecting a rock sample of target reservoir for creep experiment, and plotting ?-t curve of the rock sample during creep; (2) fitting the fractional Kelvin model with the ?-t curve of the rock sample during creep; (3) calculating the conductivity and permeability of hydraulic fracture considering creep damage; (4) numerically solving the productivity model, calculating the cumulative gas production of the gas well produced up to time t, and calculating the creep damage rate for cumulative production of the gas well; (5) repeating Steps (3) to (4), calculating the creep damage rate for cumulative production for the cases of hydraulic fracture sanding concentration N of 5 kg/m2, 7.5 kg/m2, 10 kg/m2, 12.5 kg/m2 and 15 kg/m2 respectively, plotting the creep damage chart of cumulative production.Type: ApplicationFiled: October 29, 2021Publication date: February 17, 2022Applicant: SOUTHWEST PETROLEUM UNIVERSITYInventors: Yu Peng, Ang Luo, Yongming Li, Qing Yin, Hu Jia, Xiyu Chen
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Patent number: 11125068Abstract: The present invention relates to a channel fracturing method with alternative injection of conventional and capsule-type soluble proppants. The method includes the following steps: injecting pad fluid into a wellbore to break a formation and form fractures in the formation; alternately injecting a sand-carrying fluid containing conventional proppant and a sand-carrying fluid containing capsule-type soluble proppant into the wellbore in sequence to support fractures in the formation and continue to fracture the formation; injecting displacement fluid into the wellbore to completely displace the sand-carrying fluids in the wellbore into the fractures. The conventional proppant of less dosage is used. The capsule-type soluble proppant is less difficult to be developed and its solubility is sensitive to the fracture closure, which is conducive to the quick flowback after fracturing.Type: GrantFiled: April 9, 2021Date of Patent: September 21, 2021Assignee: SOUTHWEST PETROLEUM UNIVERSITYInventors: Youshi Jiang, Yan Kou, Yongming Li, Zhibin He, Jing Jia, Wang Tang, Ang Luo, Bo Chen
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Patent number: 11104752Abstract: Disclosed is a method for inducing orderly arrangement by means of polymer crystallization, and the use thereof in preparing a composite film. Firstly, monodisperse PS-DVB nano-microspheres of different sizes are prepared by means of soap-free emulsion polymerization; the PS-DVB nano-microspheres prepared above are used as raw material, and PEG aqueous solutions with different concentrations are added to induce an orderly arrangement of the nano-microspheres by means of solution-state PEG crystallization; and characterized by using scanning electron microscopy and polarizing microscopy. The method is simple in terms of operation and is widely applicable. By further modifying the orderly arrangement of the nano-microspheres, the composite material can be applied to different fields.Type: GrantFiled: July 5, 2019Date of Patent: August 31, 2021Assignee: Xiamen UniversityInventors: Lizong Dai, Jihong Zhu, Shangyue Chen, Yuntong Li, Conghui Yuan, Guorong Chen, Birong Zeng, Yiting Xu, Wei'ang Luo
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Publication number: 20210222537Abstract: The present invention relates to a channel fracturing method with alternative injection of conventional and capsule-type soluble proppants. The method includes the following steps: injecting pad fluid into a wellbore to break a formation and form fractures in the formation; alternately injecting a sand-carrying fluid containing conventional proppant and a sand-carrying fluid containing capsule-type soluble proppant into the wellbore in sequence to support fractures in the formation and continue to fracture the formation; injecting displacement fluid into the wellbore to completely displace the sand-carrying fluids in the wellbore into the fractures. The conventional proppant of less dosage is used. The capsule-type soluble proppant is less difficult to be developed and its solubility is sensitive to the fracture closure, which is conducive to the quick flowback after fracturing.Type: ApplicationFiled: April 9, 2021Publication date: July 22, 2021Applicant: SOUTHWEST PETROLEUM UNIVERSITYInventors: Youshi Jiang, Yan Kou, Yongming Li, Zhibin He, Jing Jia, Wang Tang, Ang Luo, Bo Chen
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Method for preparing fluorine-silicon-containing polyphosphate ester and flame retardant epoxy resin
Patent number: 11046816Abstract: Disclosed are a fluorine-silicon-containing polyphosphate ester and method for preparation thereof, having a chemical structural formula of: wherein R1 is R2 is n=10˜100. The fluorine-silicon-containing polyphosphate ester of the present invention uses silicon phosphorus and fluorine for improving flame retardancy. Phosphorus catalyzes the system to form a phosphorus-rich carbon layer, performing a protective-layer function and thereby preventing further breakdown of the epoxy resin. The silicon-containing epoxy resin forms a silica-containing carbon layer during the process of combustion, strengthening the carbon-layer structure and further improving the protective function of the carbon-layer. The introduction of elemental fluorine improves the thermal stability of the epoxy resin, thereby improving the flame retardancy performance of the system.Type: GrantFiled: November 23, 2017Date of Patent: June 29, 2021Assignee: Xiamen UniversityInventors: Lizong Dai, Ting Chen, Cheng Liu, Shicheng Wang, Guorong Cehn, Conghui Yuan, Yiting Xu, Birong Zeng, Wei'ang Luo, Kaibin He -
Patent number: 11046832Abstract: The present disclosure discloses a method of manufacturing silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen, which relates to organic/inorganic hybrid nanoparticles, dispersing SiO2 in an organic solvent, then adding THPS, stirring, and finally adding p-phenylenediamine, reacting, centrifuging, washing, and drying to obtain silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen. The silicon dioxide nanoparticles modified by the polymer containing phosphorus and nitrogen have effects in flame retardancy, strengthening effect of polymer matrixes, and are expected to be widely used in the halogen-free synergistic flame retardancy of polymer materials.Type: GrantFiled: September 11, 2019Date of Patent: June 29, 2021Assignee: Xiamen UniversityInventors: Lizong Dai, Chao Liu, Guorong Chen, Jiamei Huang, Zhongyu Li, Conghui Yuan, Yiting Xu, Birong Zeng, Wei′ang Luo
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Patent number: 10844170Abstract: Disclosed are a preparation method of a phosphorus-nitrogen-silicon-containing polymeric flame retardant and application thereof. The chemical structure of the polymeric flame retardant is wherein m=10˜100, n=10˜100. The synergistic flame-retardant effect between the phosphorus, nitrogen, and silicon in the phosphorus-nitrogen-silicon-containing polymeric flame retardant increases the flame retardancy of epoxy resin.Type: GrantFiled: November 23, 2017Date of Patent: November 24, 2020Assignee: XIAMEN UNIVERSITYInventors: Lizong Dai, Ting Chen, Cheng Liu, Shicheng Wang, Guorong Cehn, Conghui Yuan, Yiting Xu, Birong Zeng, Wei'ang Luo
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Patent number: 10843926Abstract: Provided are a 2-mercaptobenzothiazole modified graphene oxide anti-corrosion coating and a preparation method thereof, the raw materials of which comprising, by mass ratio: 2-mercaptobenzothiazole modified graphene oxide 5-20; a matrix resin 30-70; a leveling agent 0.5-1.0; a defoamant 0.5-1.0; a dispersant 0.5-1.0; a film-forming additive 0.5-1.0; a diluent 20-35. The method for the 2-mercaptobenzothiazole modified graphene oxide comprises first reacting graphene oxide with cyanuric chloride, then reacting with 2-mercaptobenzothiazole.Type: GrantFiled: November 23, 2017Date of Patent: November 24, 2020Assignee: XIAMEN UNIVERSITYInventors: Lizong Dai, Shicheng Wang, Zhiheng Shao, Ting Chen, Conghui Yuan, Birong Zeng, Yiting Xu, Wei'ang Luo
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Preparation method of phosphaphenanthrene-structure reactive flame retardant and application thereof
Patent number: 10618923Abstract: Disclosed are a phosphaphenanthrene-structure reactive flame retardant and an application thereof. The preparation method comprises: enabling 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), p-hydroxy benzaldehyde (4-HBA), and 5-aminomethyl-1,3-diphenyl-1,3,5-diphosphonitryl heterocycles to react under a certain condition to obtain the reactive flame retardant with a benzene ring rigid structure containing polyhydroxy. Compared with an ordinary flame retardant, the phosphaphenanthrene-structure reactive flame retardant has the characteristics that polyfunctionality is achieved, the molecular structure is stable, the hydrolysis resistance is better, and less migration in epoxy resin, moreover, the flame retardant property of the epoxy resin can be remarkably improved.Type: GrantFiled: November 23, 2017Date of Patent: April 14, 2020Assignee: XIAMEN UNIVERSITYInventors: Lizong Dai, Chao Liu, Guorong Cehn, Jiamei Huang, Yiting Xu, Birong Zeng, Wei'ang Luo, Cohghui Yuan, Kaibin He, Xinyu Liu -
Publication number: 20200002503Abstract: The present disclosure discloses a method of manufacturing silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen, which relates to organic/inorganic hybrid nanoparticles, dispersing SiO2 in an organic solvent, then adding THPS, stirring, and finally adding p-phenylenediamine, reacting, centrifuging, washing, and drying to obtain silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen. The silicon dioxide nanoparticles modified by the polymer containing phosphorus and nitrogen have effects in flame retardancy, strengthening effect of polymer matrixes, and are expected to be widely used in the halogen-free synergistic flame retardancy of polymer materials.Type: ApplicationFiled: September 11, 2019Publication date: January 2, 2020Inventors: Lizong DAI, Chao LIU, Guorong CHEN, Jiamei HUANG, Zhongyu LI, Conghui YUAN, Yiting XU, Birong ZENG, Wei'ang LUO
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PREPARATION METHOD OF PHOSPHAPHENANTHRENE-STRUCTURE REACTIVE FLAME RETARDANT AND APPLICATION THEREOF
Publication number: 20190382427Abstract: Disclosed are a phosphaphenanthrene-structure reactive flame retardant and an application thereof. The preparation method comprises: enabling 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), p-hydroxy benzaldehyde (4-HBA), and 5-aminomethyl-1,3-diphenyl-1,3,5-diphosphonitryl heterocycles to react under a certain condition to obtain the reactive flame retardant with a benzene ring rigid structure containing polyhydroxy. Compared with an ordinary flame retardant, the phosphaphenanthrene-structure reactive flame retardant has the characteristics that polyfunctionality is achieved, the molecular structure is stable, the hydrolysis resistance is better, and less migration in epoxy resin, moreover, the flame retardant property of the epoxy resin can be remarkably improved.Type: ApplicationFiled: November 23, 2017Publication date: December 19, 2019Applicant: XIAMEN UNIVERSITYInventors: Lizong DAI, Chao LIU, Guorong CEHN, Jiamei HUANG, Yiting XU, Birong ZENG, Wei'ang LUO, Cohghui YUAN, Kaibin HE, Xinyu LIU -
Publication number: 20190330398Abstract: Disclosed is a method for inducing orderly arrangement by means of polymer crystallization, and the use thereof in preparing a composite film. Firstly, monodisperse PS-DVB nano-microspheres of different sizes are prepared by means of soap-free emulsion polymerization; the PS-DVB nano-microspheres prepared above are used as raw material, and PEG aqueous solutions with different concentrations are added to induce an orderly arrangement of the nano-microspheres by means of solution-state PEG crystallization; and characterized by using scanning electron microscopy and polarizing microscopy. The method is simple in terms of operation and is widely applicable. By further modifying the orderly arrangement of the nano-microspheres, the composite material can be applied to different fields.Type: ApplicationFiled: July 5, 2019Publication date: October 31, 2019Inventors: Lizong DAI, Jihong ZHU, Shangyue CHEN, Yuntong LI, Conghui YUAN, Guorong CHEN, Birong ZENG, Yiting XU, Wei'ang LUO
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Publication number: 20190284344Abstract: Disclosed are a fluorine-silicon-containing polyphosphate ester and method for preparation thereof, having a chemical structural formula of: wherein R 1 is R 2 is n=10˜100. The fluorine-silicon-containing polyphosphate ester of the present invention uses silicon phosphorus and fluorine for improving flame retardancy. Phosphorus catalyzes the system to form a phosphorus-rich carbon layer, performing a protective-layer function and thereby preventing further breakdown of the epoxy resin. The silicon-containing epoxy resin forms a silica-containing carbon layer during the process of combustion, strengthening the carbon-layer structure and further improving the protective function of the carbon-layer. The introduction of elemental fluorine improves the thermal stability of the epoxy resin, thereby improving the flame retardancy performance of the system.Type: ApplicationFiled: November 23, 2017Publication date: September 19, 2019Inventors: Lizong DAI, Ting CHEN, Cheng LIU, Shicheng WANG, Guorong CEHN, Conghui YUAN, Yiting XU, Birong ZENG, Wei'ang LUO, Kaibin HE
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Publication number: 20190276318Abstract: Provided are a 2-mercaptobenzothiazole modified graphene oxide anti-corrosion coating and a preparation method thereof, the raw materials of which comprising, by mass ratio: 2-mercaptobenzothiazole modified graphene oxide 5-20; a matrix resin 30-70; a leveling agent 0.5-1.0; a defoamant 0.5-1.0; a dispersant 0.5-1.0; a film-forming additive 0.5-1.0; a diluent 20-35. The method for the 2-mercaptobenzothiazole modified graphene oxide comprises first reacting graphene oxide with cyanuric chloride, then reacting with 2-mercaptobenzothiazole.Type: ApplicationFiled: November 23, 2017Publication date: September 12, 2019Inventors: Lizong DAI, Shicheng WANG, Zhiheng SHAO, Ting CHEN, Conghui YUAN, Birong ZENG, Yiting XU, Wei'ang LUO