Patents Examined by John J. Figueroa
  • Patent number: 12146104
    Abstract: The present invention discloses a CO2 responsive core-shell multi-stage swelling microsphere and a preparation method thereof. The preparation method comprises the following steps: adding a styrene monomer into a sodium dodecyl sulfate solution for emulsion polymerization to obtain a spherical polystyrene solution, taking azobisisobutyronitrile and ethylene glycol for Pinner reaction to obtain an azo compound with hydroxyl functional groups at two ends, taking the azo compound with the hydroxyl functional groups at two ends as a raw material for Schotten-Baumann reaction with methacryloyl chloride to obtain BPAB, adding the BPAB into the spherical polystyrene solution to prepare an active polystyrene core solution, and dissolving the active polystyrene core solution, acrylamide, a CO2 responsive monomer, a CO2 responsive cross-linking agent and a stable cross-linking agent into water to obtain a target product.
    Type: Grant
    Filed: June 22, 2024
    Date of Patent: November 19, 2024
    Assignee: SOUTHWEST PETROLEUM UNIVERSITY
    Inventors: Daijun Du, Zezhou Fang, Wanfen Pu, Jinzhou Zhao, Yangyang Zhang, Fayang Jin, Rui Liu, Peiwen Xiao
  • Patent number: 12146097
    Abstract: Disclosed herein is a gas hydrate inhibitor that includes from 1 to 99% by weight of an alcohol, from 1 to 99% by weight of a polyol, from 0.01 to 2.0% by weight of a first organic acid, from 0.01 to 2.0% by weight of a second organic acid and from 1 to 99% by weight of water. The gas hydrate inhibitor is useful in preventing and/or removing hydrates in a fluid to ensure a continuous flow of the fluid.
    Type: Grant
    Filed: June 21, 2023
    Date of Patent: November 19, 2024
    Assignee: RK Innovations, LLC
    Inventor: Jamie L. Roush
  • Patent number: 12146095
    Abstract: Provided in the present invention are a pH-responsive nano-gel plugging material, and a preparation method therefor and the use thereof. The pH-responsive nano-gel plugging material comprises the following raw materials in parts by mass: 50-70 parts of water, 2-3 parts of an emulsifier, 25-35 parts of an acrylic terpolymer, 10-15 parts of a polyalcohol compound, and 10-20 parts of a vinyl pyridine compound. The pH-responsive nano-gel plugging material can be applied to the plugging of Ordovician carbonate rock fractures and micro-karst cave strata, and can automatically identify Ordovician carbonate rock fractures and micro-karst cave leaking layers and realize effective blocking thereof.
    Type: Grant
    Filed: July 18, 2023
    Date of Patent: November 19, 2024
    Assignees: CHINA NATIONAL PETROLEUM CORPORATION, CNPC ENGINEERING TECHNOLOGY R & D COMPANY LIMITED
    Inventors: Jie Zhang, Rongchao Cheng, Jie Feng, Zhiliang Zhao, Shuangwei Wang, Long Li, Tianyi Zhang
  • Patent number: 12146098
    Abstract: Described herein is a combination of a catalyst and an activator and method of use for causing an exothermic reaction in a low temperature environment. The mixture can include sodium nitrite, an ammonium-based compound, a catalyst that comprises an oxidizer, and an activator and can be injected into a fluid flow path. The fluid flow path can be a pipeline, a flowline, a wellbore, or a subterranean formation. The mixture can cause an exothermic reaction in the fluid flow path and remove, using the exothermic reaction, a damaging material from the fluid flow path.
    Type: Grant
    Filed: June 1, 2023
    Date of Patent: November 19, 2024
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Pratiksha Shivaji Meher, Amit Agrawal, Jason Maxey, Sunita S. Kadam, V. Ramireddy Devarapalli
  • Patent number: 12134730
    Abstract: Provided are an asphalt-like material and a method and use thereof as a plugging agent, and a water-based drilling fluid. The asphalt-like material has a structure shown in formula I, wherein, in the formula I, R1 is selected from the group consisting of —H, —COOH, and —CH2—COOH; R2 is selected from the group consisting of —NH—CH2—CH2—OH, —NH—CH2—CH2—NH2, —N—(CH2—CH2—OH)2, and —NH—CH2—CH2—CH2—OH; R3 is selected from the group consisting of —OH, —NH—CH2—CH2—OH, —NH—CH2—CH2—NH2, —N—(CH2—CH2—OH)2, and —NH—CH2—CH2—CH2—OH; R4 is selected from the group consisting of —NH—CH2—CH2—OH, —NH—CH2—CH2—NH2, —N—(CH2—CH2—OH)2, and —NH—CH2—CH2—CH2—OH; and n is 370 to 400.
    Type: Grant
    Filed: February 9, 2023
    Date of Patent: November 5, 2024
    Assignees: Yangtze University, Jingzhou Jiahua Technology Co., Ltd.
    Inventors: Mingbiao Xu, Fuchang You, Kai Jiao, Shusheng Zhou
  • Patent number: 12129430
    Abstract: The disclosure relates to compositions that include a substrate having attached thereto functional molecules capable of interacting with ions, and related methods. Examples of the substrate include graphene, boron nitride and a graphene-boron nitride hybrid. The compositions can reduce (e.g., prevent) scale formation and/or dissolve scale formations in oil and gas production, transportation, storage, and processing systems, such as scales caused by calcium, barium and/or strontium ions.
    Type: Grant
    Filed: June 15, 2023
    Date of Patent: October 29, 2024
    Assignee: Saudi Arabian Oil Company
    Inventors: Bader Ghazi Al-Harbi, Edreese Alsharaeh, Wengang Li, Haneen Omar
  • Patent number: 12129432
    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.
    Type: Grant
    Filed: September 25, 2023
    Date of Patent: October 29, 2024
    Assignee: China University of Petroleum-Beijing
    Inventors: Jirui Hou, Infant Raj, Yuchen Wen, Zhuo Lu, Lixiao Xiao
  • Patent number: 12129205
    Abstract: There is provided a fiber-reinforced brittle matrix composite. The fiber-reinforced brittle matrix composite comprises a brittle matrix material (for example, a cementitious or ceramics material) and a coated fiber embedded in the brittle matrix material, wherein the coated fiber comprises a fiber (for example, polyethylene fiber, glass fiber, silicon carbide fiber, alumina fiber, mullite fiber) and a coating material (for example, carbon nanofibers, carbon nanotubes), which is non-covalently disposed on the fiber. A method for producing the fiber-reinforced brittle matrix composite is also provided. The method comprises providing a fiber, disposing a coating material on the fiber to form a coated fiber, wherein the coating material is non-covalently disposed on the fiber, and embedding the coated fiber in a brittle matrix material to obtain the fiber-reinforced brittle matrix composite.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: October 29, 2024
    Assignee: ceEntek Pte. Ltd.
    Inventors: En-Hua Yang, Shan He
  • Patent number: 12116523
    Abstract: A drilling fluid composition includes an aqueous base fluid, 0.01 to 5 wt. % of polyamine-functionalized activated carbon (AC-PAD), 0.1 to 10 wt. % of a shale material, 0.01 to 2 wt. % of a thickener, 0.1 to 10 wt. % of a fluid loss control additive, 0.01 to 5 wt. % of an adsorbent, and 1 to 20 wt. % of a borehole stabilizer. Each wt. % is based on a total weight of the drilling fluid composition. The AC-PAD is uniformly disposed on surfaces of the shale material. The shale material has an average pore size of 5 to 400 nanometers (nm). A method of preparing the AC-PAD and a method of drilling a subterranean geological formation.
    Type: Grant
    Filed: March 15, 2024
    Date of Patent: October 15, 2024
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Tawfik Abdo Saleh, Azeem Rana
  • Patent number: 12110452
    Abstract: Injecting into an oil reservoir a gaseous mixture of carbon monoxide (CO) together with gaseous hydrocarbons comprising a mixture of one or more of methane (C1), ethane (C2), propane (C3), butane (C4), pentane (C5), and natural gasoline, also referred to as NGL, for the purpose of achieving additional oil recovery from any of conventional, heavy, and unconventional oil reservoirs, including shale oil reservoirs. The gaseous hydrocarbons and the CO may range from 0.1% gaseous hydrocarbons and 99.5% CO and associated minor gases including any of CO2, H2, N2 to 98.5% gaseous hydrocarbons and 1.5% CO and associated minor gases.
    Type: Grant
    Filed: January 20, 2023
    Date of Patent: October 8, 2024
    Inventor: Paul B. Trost
  • Patent number: 12098326
    Abstract: A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
    Type: Grant
    Filed: October 12, 2023
    Date of Patent: September 24, 2024
    Assignees: CNPC USA Corporation, Beijing Huamei, Inc., China National Petroleum Corporation
    Inventors: Fuchen Liu, Jianshen Li, Lijun Lin, Jiangshui Huang, Genyao Lin, Lulu Song, Stephanie Yu
  • Patent number: 12098103
    Abstract: The present invention is directed to a gypsum board and a method of making such gypsum board. For instance, the gypsum board comprises a gypsum core, a first facing material, and a second facing material wherein the first facing material and the second facing material sandwich the gypsum core. The gypsum core comprises a first gypsum core section and a second gypsum core section each comprising gypsum, wherein the first gypsum core section comprises a polyol compound and has a density higher than a density of the second gypsum core section.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: September 24, 2024
    Assignee: Gold Bond Building Products, LLC
    Inventors: Eli Stav, Gene Whittington, Bradley J. Busche, R. G. Iyer, Elizabeth Burgess, Joseph J. Bailey
  • Patent number: 12098327
    Abstract: A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
    Type: Grant
    Filed: October 12, 2023
    Date of Patent: September 24, 2024
    Assignees: CNPC USA Corporation, Beijing Huamei, Inc., China National Petroleum Corporation
    Inventors: Fuchen Liu, Jianshen Li, Lijun Lin, Jiangshui Huang, Genyao Lin, Lulu Song, Stephanie Yu
  • Patent number: 12091944
    Abstract: A gravel pack containing a substrate particle coated with an inducibly degradable and a porous particle having an internal interconnected porosity that is at least partially infused with an inducer material for dissolving of a layer of filter cake disposed between the gravel pack and a subterranean formation.
    Type: Grant
    Filed: January 17, 2023
    Date of Patent: September 17, 2024
    Assignee: CARBO CERAMICS INC.
    Inventors: Terrence Palisch, Joshua Leasure, Todd Roper, Nicolas Lopez
  • Patent number: 12084613
    Abstract: A method of removing a sulfate scale from a surface is provided. The method includes contacting the sulfate-comprising scale with a conversion solution including 1 to 10 wt. % of an alkali metal carbonate, 0.5 to 10 wt. % of a borate salt or hydrate thereof, and 0.5 to 2.5 wt. % of a base to produce a carbonate-comprising scale. The method further includes exposing the carbonate-comprising scale with an acid solution including 2.5 to 25 wt. % of an acid.
    Type: Grant
    Filed: March 18, 2024
    Date of Patent: September 10, 2024
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Mohamed Mahmoud, Muhammad Shahzad Kamal
  • Patent number: 12084614
    Abstract: A method of removing a sulfate scale from a surface is provided. The method includes contacting the sulfate-comprising scale with a conversion solution including 1 to 10 wt. % of an alkali metal carbonate, 0.5 to 10 wt. % of a borate salt or hydrate thereof, and 0.5 to 2.5 wt. % of a base to produce a carbonate-comprising scale. The method further includes exposing the carbonate-comprising scale with an acid solution including 2.5 to 25 wt. % of an acid.
    Type: Grant
    Filed: March 18, 2024
    Date of Patent: September 10, 2024
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Mohamed Mahmoud, Muhammad Shahzad Kamal
  • Patent number: 12084617
    Abstract: A high strength engineered reactive composite that includes a reactive core. These reactive composites are useful for oil and gas completions and well stimulation processes, enhanced oil and gas recovery operations, as well as in defensive and mining applications requiring high energy density and good mechanical properties.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: September 10, 2024
    Assignee: Terves, LLC
    Inventor: Andrew Sherman
  • Patent number: 12077474
    Abstract: An arrangement for producing a bulk material consisting substantially of foamed or blown mineral or oxide particles by thermal treatment of a bulk material of basic particles. The arrangement includes NIR halogen radiators for generating a NIR radiation field of radiation with an active component in a near infrared, NIR, range having a wavelength in a range between 0.8 ?m and 1.5 ?m and which has a power density of at least 50 kW/m2 for thermally treating the basic particles, a conveying device for transporting a layer or stream of the bed of basic particles through the radiation field, and a controller that controls heating of the bed of basic particles such that a maximum temperature in the layer or stream is in a temperature range between 600 and 1500° C.
    Type: Grant
    Filed: October 5, 2023
    Date of Patent: September 3, 2024
    Assignee: ThermProTEC GmbH
    Inventor: Rainer Gaus
  • Patent number: 12077697
    Abstract: A problem to be solved of the present invention is to provide a diverting agent which gradually dissolves in water. The present invention relates to a diverting agent containing a polyvinyl alcohol-based resin and a method of filling a fracture using the diverting agent.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: September 3, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kazutoshi Tsuji, Norihito Sakai, Tomoya Fujita, Takahiro Saka, Chizuko Furo
  • Patent number: 12071587
    Abstract: Anti-corrosion and low-heat-conduction annulus protection fluid for deep-sea oil and gas exploitation and a preparation method thereof are provided. The annulus protection fluid includes: a polymer solution: 100 parts, clear water III: 100 parts to 500 parts, a thermally-insulating material: 20 parts, a corrosion inhibitor: 1 part to 7 parts, and xanthan gum: 0.3 parts to 0.5 parts, wherein the polymer solution is a mixture of a polymer and clear water II in a mass ratio of 1:(22-28); and the polymer includes the following raw materials: clear water I: 100 parts, an acrylamide: 15 parts to 20 parts, 2-2-methylpropanesulfonic acid: 5 parts to 10 parts, a crosslinking agent: 0.1 parts to 0.3 parts, and an initiator: 0.5 parts to 1 part. The annulus protection fluid exhibits excellent thermal insulation performance and corrosion resistance, and avoids the generation of hydrates and the decomposition of hydrate layers at a wellhead.
    Type: Grant
    Filed: February 5, 2024
    Date of Patent: August 27, 2024
    Assignees: Qingdao University of Technology, China University of Petroleum (East China)
    Inventors: Chang Lu, Yuhuan Bu, Shaorui Jing, Shenglai Guo, Huajie Liu, Heng Yang