Patents by Inventor Abdulkareem M. Al-Sofi
Abdulkareem M. Al-Sofi 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: 11774436Abstract: A method of determining foam stability includes placing a core plug and two porous plates into a core holder of a vesselcore plug. The first porous plate and the second porous plate are disposed on opposite sides of the core plug, and the core plug, the first porous plate, and the second porous plate are saturated with surfactant. The method further includes alternating surfactant solution injections between a first injection area located on the first porous plate and a second injection area located on the second porous plate, while ensuring that the surfactant solution is being continuously fed, thereby forming continuously flowing foam in-situ within the core plug, in which the surfactant solution comprises gas and the surfactant; and monitoring the pressure drop to determine the stability of the foam in the core plug.Type: GrantFiled: December 17, 2021Date of Patent: October 3, 2023Assignee: Saudi Arabian Oil CompanyInventors: Abdulkareem M. Al-Sofi, Jinxun Wang
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Publication number: 20230194497Abstract: A method of determining foam stability includes placing a core plug and two porous plates into a core holder of a vesselcore plug. The first porous plate and the second porous plate are disposed on opposite sides of the core plug, and the core plug, the first porous plate, and the second porous plate are saturated with surfactant. The method further includes alternating surfactant solution injections between a first injection area located on the first porous plate and a second injection area located on the second porous plate, while ensuring that the surfactant solution is being continuously fed, thereby forming continuously flowing foam in-situ within the core plug, in which the surfactant solution comprises gas and the surfactant; and monitoring the pressure drop to determine the stability of the foam in the core plug.Type: ApplicationFiled: December 17, 2021Publication date: June 22, 2023Applicant: Saudi Arabian Oil CompanyInventors: Abdulkareem M. Al-Sofi, Jinxun Wang
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Patent number: 11614391Abstract: A method of evaluating gel stability of a gel for treating a subterranean formation includes placing a composite core plug into a core holder of a coreflood testing device where the composite core plug comprises first, second, and third core plugs, alternating injection of polymer solution into first and second injection areas, and monitoring a pressure drop across the composite core plug as a function of time. The method further includes identifying a gelation of a gelent solution in the third core plug, where the gelation is indicated by an increase in the pressure drop across the composite core plug, after the increase in the pressure drop indicative of the gelation point, continuing alternating injections of the polymer solution into the first and second injection areas, and identifying a reduction in the pressure drop across the composite core plug indicative of deterioration of the gel.Type: GrantFiled: October 27, 2021Date of Patent: March 28, 2023Assignee: Saudi Arabian Oil CompanyInventors: Abdulkareem M. Al-Sofi, Jinxun Wang
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Publication number: 20220082002Abstract: Methods for treating a hydrocarbon-containing formation may include preheating a gelant that contains a crosslinkable polymer, one or more crosslinking agents, and an aqueous fluid; and injecting the gelant into the formation, wherein the gelant forms a gel in the formation. Methods for enhanced oil recovery may include preheating a gelant that contains a crosslinkable polymer, one or more crosslinking agents, and an aqueous fluid; injecting the gelant into a high permeability zone of a hydrocarbon-containing formation, wherein the gelant forms a gel; and stimulating a flow of hydrocarbons from a low permeability zone of the hydrocarbon-containing formation.Type: ApplicationFiled: September 16, 2020Publication date: March 17, 2022Applicant: SAUDI ARABIAN OIL COMPANYInventors: Jinxun Wang, Abdulkareem M. Al-Sofi, Amer M. Anazi
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Patent number: 11041109Abstract: A composition for use in surfactant polymer flooding processes in a carbonate reservoir, the composition comprising a surfactant, the surfactant operable to reduce interfacial tension, a polymer, the polymer operable to increase the viscosity of the composition, and a tailored water, the tailored water operable to alter a wettability of the in-situ rock, where the tailored water has a total dissolved solids of between 5,000 wt ppm and 7,000 wt ppm, where the total dissolved solids comprises a salt, where the composition has a viscosity between 3 cP and 100 cP.Type: GrantFiled: December 27, 2017Date of Patent: June 22, 2021Assignee: Saudi Arabian Oil CompanyInventors: Subhash Ayirala, Abdulkareem M. Al-Sofi, Jinxun Wang, Ali Abdallah Al-Yousef
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Patent number: 10988673Abstract: A composition for use in a polymer flooding operation in a viscous oil containing carbonate reservoir formation with in situ rock is provided. The composition includes a polymer, the polymer operable to increase the viscosity of the composition; and a smart water, the smart water operable to alter a wettability of the in situ rock, wherein the smart water has a total dissolved solids of between 5,000 ppm and 7,000 ppm, wherein the total dissolved solids comprises one or more salts; wherein the composition has a viscosity between 4 cP and 100 cP.Type: GrantFiled: August 30, 2019Date of Patent: April 27, 2021Inventors: Subhash Chandrabose Ayirala, Abdulkareem M. Al-Sofi, Ali Abdallah Al-Yousef, Jinxun Wang
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Publication number: 20210115325Abstract: A composition for use in a polymer flooding operation in a viscous oil containing carbonate reservoir formation with in situ rock is provided. The composition includes a polymer, the polymer operable to increase the viscosity of the composition; and a smart water, the smart water operable to alter a wettability of the in situ rock, wherein the smart water has a total dissolved solids of between 5,000 ppm and 7,000 ppm, wherein the total dissolved solids comprises one or more salts; wherein the composition has a viscosity between 4 cP and 100 cP.Type: ApplicationFiled: August 30, 2019Publication date: April 22, 2021Inventors: Subhash Chandrabose Ayirala, Abdulkareem M. Al-Sofi, Ali Abdallah Al-Yousef, Jinxun Wang
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Patent number: 10961831Abstract: A composition for use in a polymer flooding operation in a viscous oil containing carbonate reservoir formation with in situ rock is provided. The composition includes a polymer, the polymer operable to increase the viscosity of the composition; and a tuned water, the tuned water operable to alter a wettability of the in situ rock, wherein the tuned water has a total dissolved solids of between 5,000 ppm by weight and 7,000 ppm by weight, wherein the total dissolved solids comprises one or more salts; wherein the composition has a viscosity between 4 cP and 100 cP.Type: GrantFiled: September 23, 2019Date of Patent: March 30, 2021Inventors: Subhash Chandrabose Ayirala, Abdulkareem M. Al-Sofi, Ali Abdallah Al-Yousef, Jinxun Wang
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Patent number: 10920129Abstract: An oil recovery composition of an aqueous solution of one or more salts and dilute polymer and processes for enhanced oil recovery using the oil recovery composition are provided. An oil recovery composition may include an aqueous solution of one or more salts having a salinity of about 4000 parts-per-million (ppm) total dissolved solids (TDS) to about 8000 ppm TDS and a polymer having a concentration of 250 ppm to 750 ppm. The one or more salts may include at least one of sodium chloride (NaCl), calcium chloride (CaCl2), magnesium chloride (MgCl2), sodium sulfate (Na2SO4) and magnesium sulfate (MgSO4). The polymer may include a copolymer of acrylamide and acrylamido tertiary butyl sulfonate (ATBS). The oil recovery compositions provided may be suited for enhancing oil recovery in carbonate reservoirs having in situ oil viscosities less than 3 centipoise (cP).Type: GrantFiled: March 27, 2020Date of Patent: February 16, 2021Assignee: Saudi Arabian Oil CompanyInventors: Subhash Chandrabose Ayirala, Ali Abdallah Al-Yousef, Abdulkareem M. Al-Sofi
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Patent number: 10920128Abstract: An oil recovery composition of an aqueous solution of one or more salts and dilute polymer and processes for enhanced oil recovery using the oil recovery composition are provided. An oil recovery composition may include an aqueous solution of one or more salts having a salinity of about 4000 parts-per-million (ppm) total dissolved solids (TDS) to about 8000 ppm TDS and a polymer having a concentration of 250 ppm to 750 ppm. The one or more salts may include at least one of sodium chloride (NaCl), calcium chloride (CaCl2), magnesium chloride (MgCl2), sodium sulfate (Na2SO4) and magnesium sulfate (MgSO4). The polymer may include a copolymer of acrylamide and acrylamido tertiary butyl sulfonate (ATBS). The oil recovery compositions provided may be suited for enhancing oil recovery in carbonate reservoirs having in situ oil viscosities less than 3 centipoise (cP).Type: GrantFiled: November 18, 2019Date of Patent: February 16, 2021Assignee: Saudi Arabian Oil CompanyInventors: Subhash Chandrabose Ayirala, Ali Abdallah Al-Yousef, Abdulkareem M. Al-Sofi
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Patent number: 10889750Abstract: An oil recovery composition of an aqueous solution of one or more salts and dilute polymer and processes for enhanced oil recovery using the oil recovery composition are provided. An oil recovery composition may include an aqueous solution of one or more salts having a salinity of about 4000 parts-per-million (ppm) total dissolved solids (TDS) to about 8000 ppm TDS and a polymer having a concentration of 250 ppm to 750 ppm. The one or more salts may include at least one of sodium chloride (NaCl), calcium chloride (CaCl2), magnesium chloride (MgCl2), sodium sulfate (Na2SO4) and magnesium sulfate (MgSO4). The polymer may include a copolymer of acrylamide and acrylamido tertiary butyl sulfonate (ATBS). The oil recovery compositions provided may be suited for enhancing oil recovery in carbonate reservoirs having in situ oil viscosities less than 3 centipoise (cP).Type: GrantFiled: March 27, 2020Date of Patent: January 12, 2021Assignee: Saudi Arabian Oil CompanyInventors: Subhash Chandrabose Ayirala, Ali Abdallah Al-Yousef, Abdulkareem M. Al-Sofi
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Patent number: 10781362Abstract: An oil recovery composition of an aqueous solution of one or more salts and dilute polymer and processes for enhanced oil recovery using the oil recovery composition are provided. An oil recovery composition may include an aqueous solution of one or more salts having a salinity of about 4000 parts-per-million (ppm) to about 8000 ppm, a polymer having a concentration of 250 ppm to 500 ppm, and metal oxide nanoparticles having a concentration in the range of 0.01 weight (wt) % to 0.05 wt %. The one or more salts may include sodium sulfate (Na2SO4). The polymer may include a copolymer of acrylamide and acrylamido tertiary butyl sulfonate (ATBS). The oil recovery compositions provided may be suited for enhancing oil recovery in carbonate reservoirs having in situ oil viscosities less than 3 centipoise (cP).Type: GrantFiled: February 6, 2020Date of Patent: September 22, 2020Assignee: Saudi Arabian Oil CompanyInventors: Subhash Chandrabose Ayirala, Ali Abdallah Al-Yousef, Abdulkareem M. Al-Sofi
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Publication number: 20200270511Abstract: An oil recovery composition of an aqueous solution of one or more salts and dilute polymer and processes for enhanced oil recovery using the oil recovery composition are provided. An oil recovery composition may include an aqueous solution of one or more salts having a salinity of about 4000 parts-per-million (ppm) total dissolved solids (TDS) to about 8000 ppm TDS and a polymer having a concentration of 250 ppm to 750 ppm. The one or more salts may include at least one of sodium chloride (NaCl), calcium chloride (CaCl2), magnesium chloride (MgCl2), sodium sulfate (Na2SO4) and magnesium sulfate (MgSO4). The polymer may include a copolymer of acrylamide and acrylamido tertiary butyl sulfonate (ATBS). The oil recovery compositions provided may be suited for enhancing oil recovery in carbonate reservoirs having in situ oil viscosities less than 3 centipoise (cP).Type: ApplicationFiled: March 27, 2020Publication date: August 27, 2020Inventors: Subhash Chandrabose Ayirala, Ali Abdallah Al-Yousef, Abdulkareem M. Al-Sofi
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Patent number: 10723937Abstract: An oil recovery composition of an aqueous solution of one or more salts and dilute polymer and processes for enhanced oil recovery using the oil recovery composition are provided. An oil recovery composition may include an aqueous solution of one or more salts having a salinity of about 4000 parts-per-million (ppm) to about 8000 ppm, a polymer having a concentration of 250 ppm to 500 ppm, and metal oxide nanoparticles having a concentration in the range of 0.01 weight (wt) % to 0.05 wt %. The one or more salts may include sodium sulfate (Na2SO4). The polymer may include a copolymer of acrylamide and acrylamido tertiary butyl sulfonate (ATBS). The oil recovery compositions provided may be suited for enhancing oil recovery in carbonate reservoirs having in situ oil viscosities less than 3 centipoise (cP).Type: GrantFiled: February 6, 2020Date of Patent: July 28, 2020Assignee: Saudi Arabian Oil CompanyInventors: Subhash Chandrabose Ayirala, Ali Abdallah Al-Yousef, Abdulkareem M. Al-Sofi
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Publication number: 20200224079Abstract: An oil recovery composition of an aqueous solution of one or more salts and dilute polymer and processes for enhanced oil recovery using the oil recovery composition are provided. An oil recovery composition may include an aqueous solution of one or more salts having a salinity of about 4000 parts-per-million (ppm) total dissolved solids (TDS) to about 8000 ppm TDS and a polymer having a concentration of 250 ppm to 750 ppm. The one or more salts may include at least one of sodium chloride (NaCl), calcium chloride (CaCl2), magnesium chloride (MgCl2), sodium sulfate (Na2SO4) and magnesium sulfate (MgSO4). The polymer may include a copolymer of acrylamide and acrylamido tertiary butyl sulfonate (ATBS). The oil recovery compositions provided may be suited for enhancing oil recovery in carbonate reservoirs having in situ oil viscosities less than 3 centipoise (cP).Type: ApplicationFiled: March 27, 2020Publication date: July 16, 2020Inventors: Subhash Chandrabose Ayirala, Ali Abdallah Al-Yousef, Abdulkareem M. Al-Sofi
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Patent number: 10689978Abstract: A method of determining gelation time is disclosed that includes placing a composite core plug into a core holder of a commercially-available vessel. The composite core plug includes a first core plug with second and third core plugs disposed on opposite sides of the first core plug. The second and third core plugs are saturated with polymer solution, and the first core plug is saturated with gel solution comprising polymer and crosslinker. The method further includes alternating polymer solution injections between a first injection area located on the second core plug and a second injection area located on the third core plug, while ensuring that the polymer solution is being continuously fed to the composite core plug. The pressure drop across the composite core plug is monitored during the alternating injection of polymer solution to determine the gelation time of the gel solution in the first core plug.Type: GrantFiled: May 31, 2018Date of Patent: June 23, 2020Assignee: Saudi Arabian Oil CompanyInventors: Abdulkareem M. Al-Sofi, Jinxun Wang, Hassan Wasel Al Hashim
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Publication number: 20200172793Abstract: An oil recovery composition of an aqueous solution of one or more salts and dilute polymer and processes for enhanced oil recovery using the oil recovery composition are provided. An oil recovery composition may include an aqueous solution of one or more salts having a salinity of about 4000 parts-per-million (ppm) to about 8000 ppm, a polymer having a concentration of 250 ppm to 500 ppm, and metal oxide nanoparticles having a concentration in the range of 0.01 weight (wt) % to 0.05 wt %. The one or more salts may include sodium sulfate (Na2SO4). The polymer may include a copolymer of acrylamide and acrylamido tertiary butyl sulfonate (ATBS). The oil recovery compositions provided may be suited for enhancing oil recovery in carbonate reservoirs having in situ oil viscosities less than 3 centipoise (cP).Type: ApplicationFiled: February 6, 2020Publication date: June 4, 2020Inventors: Subhash Chandrabose Ayirala, Ali Abdallah Al-Yousef, Abdulkareem M. Al-Sofi
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Publication number: 20200172794Abstract: An oil recovery composition of an aqueous solution of one or more salts and dilute polymer and processes for enhanced oil recovery using the oil recovery composition are provided. An oil recovery composition may include an aqueous solution of one or more salts having a salinity of about 4000 parts-per-million (ppm) to about 8000 ppm, a polymer having a concentration of 250 ppm to 500 ppm, and metal oxide nanoparticles having a concentration in the range of 0.01 weight (wt) % to 0.05 wt %. The one or more salts may include sodium sulfate (Na2SO4). The polymer may include a copolymer of acrylamide and acrylamido tertiary butyl sulfonate (ATBS). The oil recovery compositions provided may be suited for enhancing oil recovery in carbonate reservoirs having in situ oil viscosities less than 3 centipoise (cP).Type: ApplicationFiled: February 6, 2020Publication date: June 4, 2020Inventors: Subhash Chandrabose Ayirala, Ali Abdallah Al-Yousef, Abdulkareem M. Al-Sofi
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Publication number: 20200115620Abstract: An oil recovery composition of an aqueous solution of one or more salts and dilute polymer and processes for enhanced oil recovery using the oil recovery composition are provided. An oil recovery composition may include an aqueous solution of one or more salts having a salinity of about 4000 parts-per-million (ppm) total dissolved solids (TDS) to about 8000 ppm TDS and a polymer having a concentration of 250 ppm to 750 ppm. The one or more salts may include at least one of sodium chloride (NaCl), calcium chloride (CaCl2), magnesium chloride (MgCl2), sodium sulfate (Na2SO4) and magnesium sulfate (MgSO4). The polymer may include a copolymer of acrylamide and acrylamido tertiary butyl sulfonate (ATBS). The oil recovery compositions provided may be suited for enhancing oil recovery in carbonate reservoirs having in situ oil viscosities less than 3 centipoise (cP).Type: ApplicationFiled: November 18, 2019Publication date: April 16, 2020Inventors: Subhash Chandrabose Ayirala, Ali Abdallah Al-Yousef, Abdulkareem M. Al-Sofi
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Patent number: 10590329Abstract: An oil recovery composition of an aqueous solution of one or more salts and dilute polymer and processes for enhanced oil recovery using the oil recovery composition are provided. An oil recovery composition may include an aqueous solution of one or more salts having a salinity of about 5000 parts-per-million (ppm) to about 6000 ppm and a polymer having a concentration of 250 ppm to 500 ppm. The one or more salts may include sodium sulfate (Na2SO4). The polymer may include a copolymer of acrylamide and acrylamido tertiary butyl sulfonate (ATBS). The oil recovery compositions provided may be suited for enhancing oil recovery in carbonate reservoirs having in situ oil viscosities less than 3 centipoise (cP).Type: GrantFiled: December 28, 2018Date of Patent: March 17, 2020Assignee: Saudi Arabian Oil CompanyInventors: Subhash Chandrabose Ayirala, Ali Abdallah Al-Yousef, Abdulkareem M. Al-Sofi