Patents by Inventor Jothibasu Ramasamy
Jothibasu Ramasamy 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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Publication number: 20250257471Abstract: A corrosion inhibition composition includes a carrier fluid and corrosion inhibitor consisting essentially of a compound represented by Formula (I): where R1, R2, R3, and R4 are each, independently, a hydrogen or an alkoxy group, and m and n are each, independently integers ranging from 2 to 10, where R5 and R6 are each, independently, a saturated C6-C10 hydrocarbon group or an unsaturated C6-C10 hydrocarbon group. A method of producing a corrosion inhibition composition consisting essentially of an ethoxylated diamine corrosion inhibitor and a carrier fluid and a method for inhibiting corrosion in a refined hydrocarbon-bearing system are also described.Type: ApplicationFiled: April 3, 2025Publication date: August 14, 2025Applicants: SAUDI ARABIAN OIL COMPANY, ARAMCO SERVICES COMPANYInventors: Jothibasu Ramasamy, Muthukumar Nagu, Ashok Kumar Santra, Nayef M. Alanazi
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Publication number: 20250179373Abstract: A method for inhibiting corrosion in a refinery crude distillation unit includes introducing a corrosion inhibition composition to the refinery crude distillation unit. The corrosion inhibition efficiency of the corrosion inhibition composition may be at least 80%. The corrosion inhibition composition may include a carrier fluid and a corrosion inhibitor consisting essentially of a compound represented by Formula (I): where R1, R2, R3, and R4 are each, independently, a hydrogen or an alkoxy group, and m and n are each, independently integers ranging from 2 to 10, wherein R5 and R6 are each, independently, a saturated C6-C10 hydrocarbon group or an unsaturated C6-C10 hydrocarbon group.Type: ApplicationFiled: November 30, 2023Publication date: June 5, 2025Applicant: SAUDI ARABIAN OIL COMPANYInventors: Muthukumar Nagu, Nayef M. Alanazi, Jothibasu Ramasamy, Ashok Santra
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Patent number: 12291785Abstract: A corrosion inhibition composition includes a carrier fluid and corrosion inhibitor consisting essentially of a compound represented by Formula (I): where R1, R2, R3, and R4 are each, independently, a hydrogen or an alkoxy group, and m and n are each, independently integers ranging from 2 to 10, where R5 and R6 are each, independently, a saturated C6-C10 hydrocarbon group or an unsaturated C6-C10 hydrocarbon group. A method of producing a corrosion inhibition composition consisting essentially of an ethoxylated diamine corrosion inhibitor and a carrier fluid and a method for inhibiting corrosion in a refined hydrocarbon-bearing system are also described.Type: GrantFiled: November 22, 2022Date of Patent: May 6, 2025Assignee: SAUDI ARABIAN OIL COMPANYInventors: Jothibasu Ramasamy, Muthukumar Nagu, Ashok Kumar Santra, Nayef M. Alanazi
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Patent number: 12286584Abstract: An invert oil-based mud (OBM) includes an oleaginous continuous phase, an aqueous internal phase, and an emulsifier that has two hydrophilic head groups and a hydrophobic tail group. A method of using an invert oil-based mud (OBM) in a wellbore is provided. The method includes introducing the invert OBM, which includes an oleaginous continuous phase, an aqueous internal phase, and an emulsifier with two hydrophilic head groups and a hydrophobic tail group into the wellbore. A method of preparing an invert oil-based mud (OBM) is also provided. The method includes mixing an emulsifier comprising two hydrophilic head groups and a hydrophobic tail group with an oleaginous phase and an aqueous phase.Type: GrantFiled: November 30, 2021Date of Patent: April 29, 2025Assignee: SAUDI ARABIAN OIL COMPANYInventors: Jothibasu Ramasamy, Mujtaba M. Alsaihati
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Patent number: 12163092Abstract: A composition of an invert emulsion oil-based drilling fluid is provided. The composition may include an oil phase and an aqueous phase. The oil phase may include an oleaginous fluid, an organophilic clay-based solid viscosifier, and a liquid viscosifier including a POSS. Further provided is a method of introducing the composition including the POSS into a wellbore. After introduction of the composition into the wellbore, the method includes maintaining wellbore conditions to provide a stable rheological property for a period up to about 96 hours in an HPHT section of a wellbore.Type: GrantFiled: September 30, 2021Date of Patent: December 10, 2024Assignee: SAUDI ARABIAN OIL COMPANYInventors: Jothibasu Ramasamy, Vikrant Wagle
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Patent number: 12146381Abstract: Apparatuses, systems, and methods of use are provided for a drilling stabilizer with chemical compartments within the teeth of the drilling stabilizer. The drilling stabilizer features dissolvable windows that allow chemicals to flow from the chemical compartments into the wellbore. The chemicals released can include cross-linkers or activators, which can react with polymers downhole to generate a plug for fluid loss control.Type: GrantFiled: October 30, 2023Date of Patent: November 19, 2024Assignee: Saudi Arabian Oil CompanyInventors: Jothibasu Ramasamy, Chinthaka Pasan Gooneratne, Jianhui Xu
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Publication number: 20240368449Abstract: A composition of an invert emulsion oil-based drilling fluid is provided. The composition may include an oil phase and an aqueous phase. The oil phase may include an oleaginous fluid, an organophilic clay-based solid viscosifier, and a liquid viscosifier including a POSS. Further provided is a method of introducing the composition including the POSS into a wellbore. After introduction of the composition into the wellbore, the method includes maintaining wellbore conditions to provide a stable rheological property for a period up to about 96 hours in an HPHT section of a wellbore.Type: ApplicationFiled: July 15, 2024Publication date: November 7, 2024Applicant: SAUDI ARABIAN OIL COMPANYInventors: Jothibasu Ramasamy, Vikrant Wagle
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Patent number: 12116526Abstract: Methods and compositions including introducing a lost circulation material to a zone of interest in a subterranean formation via a wellbore, the zone of interest comprising depleted zones, zones of low pressure, lost circulation zones, fractured zones, and any combination thereof; wherein the lost circulation material comprises an epoxidized linear ?-olefin; a surfactant; a curing agent; and a carbon dioxide gas-generating compound comprising sodium bicarbonate; heating the lost circulation material; and allowing the epoxidized linear ?-olefin to polymerize to a resin and the carbon dioxide gas-generating compound to produce a gas to form a foamed resin in the zone of interest, thereby mitigating a flow of fluids from the wellbore into the subterranean formation.Type: GrantFiled: March 24, 2023Date of Patent: October 15, 2024Assignee: SAUDI ARABIAN OIL COMPANYInventors: Vikrant Wagle, Jothibasu Ramasamy, Ali Alsafran, Abdulla Al-Awadh, Abdullah S. Al-Yami
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Publication number: 20240183038Abstract: A corrosion inhibition composition includes a carrier fluid and corrosion inhibitor consisting essentially of a compound represented by Formula (I): where R1, R2, R3, and R4 are each, independently, a hydrogen or an alkoxy group, and m and n are each, independently integers ranging from 2 to 10, where R5 and R6 are each, independently, a saturated C6-C10 hydrocarbon group or an unsaturated C6-C10 hydrocarbon group. A method of producing a corrosion inhibition composition consisting essentially of an ethoxylated diamine corrosion inhibitor and a carrier fluid and a method for inhibiting corrosion in a refined hydrocarbon-bearing system are also described.Type: ApplicationFiled: November 22, 2022Publication date: June 6, 2024Applicants: SAUDI ARABIAN OIL COMPANY, ARAMCO SERVICES COMPANYInventors: Jothibasu Ramasamy, Muthukumar Nagu, Ashok Kumar Santra, Nayef M. Alanazi
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Publication number: 20240166934Abstract: Described is a wastewater-based drilling fluid. The wastewater-based drilling fluid consists of about 40% to 60% by volume of a high salinity wastewater discharge. The wastewater-based drilling fluid also includes calcium carbonate as a bridging agent and barite as a weighting agent. The wastewater-based drilling fluid possesses a set of rheological properties and filtration control properties characteristic of a water-based drilling fluid.Type: ApplicationFiled: November 17, 2022Publication date: May 23, 2024Applicant: SAUDI ARABIAN OIL COMPANYInventors: Jothibasu Ramasamy, Subhash C. Ayirala, Mohammed K. Arfaj, Salah Hamad Al-Saleh
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Patent number: 11933136Abstract: A method for operating a circulating sub in a well includes opening a port of the circulating sub, including: dropping a ball into a drill pipe containing a downhole fluid; and seating the ball on an actuator slidably disposed concentrically within the drill pipe, in which seating the ball on the actuator causes motion of the actuator relative to the drill pipe to open a port defined in a wall of the drill pipe. The method includes closing the port of the circulating sub, including: introducing a solvent different from the downhole fluid into the drill pipe, in which a solubility of the ball in the solvent is greater than a solubility of the ball in the downhole fluid; and degrading the ball in the solvent, in which the degrading of the ball causes motion of the actuator relative to the drill pipe to close the port.Type: GrantFiled: December 1, 2021Date of Patent: March 19, 2024Assignee: Saudi Arabian Oil CompanyInventors: Jothibasu Ramasamy, Chinthaka Pasan Gooneratne, Jianhui Xu
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Patent number: 11913295Abstract: A method for plugging a lost-circulation zone in a subsurface formation includes introducing a drillstem including a drilling stabilizer into a wellbore during drilling operations, the drilling stabilizer including at least stabilizer blades and a pressure sensor. Each stabilizer blade includes at least an inner chamber, a light source, and a window. The method further includes injecting a lost-circulation fluid, including a plurality of lost-circulation particles, into the wellbore. Each lost-circulation particle includes a lost-circulation additive encapsulated by a photo-sensitive coating. The method further includes measuring a pressure differential with the pressure sensor and providing a pressure signal to the light source of each stabilizer blade, thereby actuating the light source to produce a light beam, which allows the light beam to contact the photo-sensitive coatings of the lost-circulation particles to release the lost-circulation additives.Type: GrantFiled: December 22, 2021Date of Patent: February 27, 2024Assignee: Saudi Arabian Oil CompanyInventors: Jothibasu Ramasamy, Chinthaka Gooneratne, Jianhui Xu
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Patent number: 11866664Abstract: An ecofriendly corrosion inhibitor composition and a method for inhibiting corrosion on a metal surface with the ecofriendly corrosion inhibitor composition are provided. The ecofriendly corrosion inhibitor composition includes 10-30 weight % of fatty acids derived from waste vegetable oils and 70-90 weight % of heavy aromatic naphtha. The fatty acids derived from waste vegetable oils include oleic acid, linoleic acid, and palmitic acid. In the method, the ecofriendly corrosion inhibitor composition is added to a hydrocarbon fluid exposed to the metal surface and the corrosion inhibitor composition inhibits corrosion on the metal surfaces.Type: GrantFiled: June 10, 2021Date of Patent: January 9, 2024Assignee: SAUDI ARABIAN OIL COMPANYInventors: Muthukumar Nagu, Jothibasu Ramasamy, Nayef M. Alanazi, Md Amanullah
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Patent number: 11851977Abstract: Apparatuses, systems, and methods of use are provided for a drilling stabilizer with chemical compartments within the teeth of the drilling stabilizer. The drilling stabilizer features dissolvable windows that allow chemicals to flow from the chemical compartments into the wellbore. The chemicals released can include cross-linkers or activators, which can react with polymers downhole to generate a plug for fluid loss control.Type: GrantFiled: December 3, 2021Date of Patent: December 26, 2023Inventors: Jothibasu Ramasamy, Chinthaka Pasan Gooneratne, Jianhui Xu
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Publication number: 20230383167Abstract: A composition of an invert emulsion oil-based drilling fluid formulation includes an invert emulsion of an oil phase and an aqueous phase. The oil phase includes an oleaginous fluid and a liquid viscosifier that is a polyhedral oligomeric silsesquioxane (POSS). A method includes introducing an invert emulsion oil-based drilling fluid formulation including an oil phase, an aqueous phase, and a liquid viscosifier including POSS downhole through the wellbore and maintaining wellbore conditions such that the invert emulsion oil-based drilling fluid formulation provides a stable rheological property including one or more of viscosity, yield point, plastic viscosity, gel strength, and electrical stability for a period up to about 96 hours.Type: ApplicationFiled: May 27, 2022Publication date: November 30, 2023Applicant: SAUDI ARABIAN OIL COMPANYInventors: Jothibasu Ramasamy, Vikrant Wagle, Mohammad A. Otaibi
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Patent number: 11814933Abstract: A method for actuation of a downhole device includes rotating a drill pipe relative to a cylindrical pipe disposed coaxially within the drill pipe. First segments including a first material are disposed on the inner surface of the drill pipe. Second segments including a degradable material are disposed on the outer surface of the cylindrical pipe, with each of the second segments aligned with a corresponding first segment. The first material and the degradable material are insoluble in the downhole fluid, and a solubility of the degradable material in a solvent is greater than a solubility of the first material in the solvent. The method includes generating a first electrical signal pattern during rotation of the drill pipe; introducing the solvent into the drill pipe, in which the degradable material degrades responsive to introduction of the solvent; and generating a second electrical signal pattern after introduction of the solvent.Type: GrantFiled: December 1, 2021Date of Patent: November 14, 2023Assignee: Saudi Arabian Oil CompanyInventors: Jothibasu Ramasamy, Chinthaka Pasan Gooneratne, Jianhui Xu
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Patent number: 11686196Abstract: Systems and methods for instructing a device within a wellbore of a subterranean well includes a drill string with an actuator assembly extending into the subterranean. The actuator assembly has a first pipe member with a segment formed of a first material. A second pipe member is coaxially aligned with the first pipe member. A plurality of bearings are positioned between the first pipe member and the second pipe member. Each of the plurality of bearings includes a second material. The first material is reactive to the second material. Certain of the plurality of bearings are changeable bearings that include a dissolvable material. The actuator assembly is operable to instruct an operation of the device by generating an instruction signal by rotating the first pipe member relative to the second pipe member and interpreting a pattern of a reaction of the segment as a bearing rotates past the segment.Type: GrantFiled: December 3, 2021Date of Patent: June 27, 2023Assignee: Saudi Arabian Oil CompanyInventors: Jothibasu Ramasamy, Chinthaka Pasan Gooneratne, Jianhui Xu
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Publication number: 20230193705Abstract: A method for plugging a lost-circulation zone in a subsurface formation includes introducing a drillstem including a drilling stabilizer into a wellbore during drilling operations, the drilling stabilizer including at least stabilizer blades and a pressure sensor. Each stabilizer blade includes at least an inner chamber, a light source, and a window. The method further includes injecting a lost-circulation fluid, including a plurality of lost-circulation particles, into the wellbore. Each lost-circulation particle includes a lost-circulation additive encapsulated by a photo-sensitive coating. The method further includes measuring a pressure differential with the pressure sensor and providing a pressure signal to the light source of each stabilizer blade, thereby actuating the light source to produce a light beam, which allows the light beam to contact the photo-sensitive coatings of the lost-circulation particles to release the lost-circulation additives.Type: ApplicationFiled: December 22, 2021Publication date: June 22, 2023Applicant: Saudi Arabian Oil CompanyInventors: Jothibasu Ramasamy, Chinthaka Gooneratne, Jianhui Xu
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Patent number: 11667829Abstract: Compositions inhibit corrosion in various commercial settings, such as in a refinery and/or in an oil and gas application. The compositions include at least one fatty acid and at least two amphipathic molecules selected from the group consisting of dodecenyl succinic acid, dimer fatty acid and benzalkonium chloride.Type: GrantFiled: March 22, 2022Date of Patent: June 6, 2023Assignee: Saudi Arabian Oil CompanyInventors: Muthukumar Nagu, Nayef M. Alanazi, Jothibasu Ramasamy
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Publication number: 20230167716Abstract: A method for actuation of a downhole device includes rotating a drill pipe relative to a cylindrical pipe disposed coaxially within the drill pipe. First segments including a first material are disposed on the inner surface of the drill pipe. Second segments including a degradable material are disposed on the outer surface of the cylindrical pipe, with each of the second segments aligned with a corresponding first segment. The first material and the degradable material are insoluble in the downhole fluid, and a solubility of the degradable material in a solvent is greater than a solubility of the first material in the solvent. The method includes generating a first electrical signal pattern during rotation of the drill pipe; introducing the solvent into the drill pipe, in which the degradable material degrades responsive to introduction of the solvent; and generating a second electrical signal pattern after introduction of the solvent.Type: ApplicationFiled: December 1, 2021Publication date: June 1, 2023Inventors: Jothibasu Ramasamy, Chinthaka Pasan Gooneratne, Jianhui Xu