Patents by Inventor Sunder Ramachandran
Sunder Ramachandran 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: 10465105Abstract: A method of reducing an amount of a sulfur-containing compound in a reservoir fluid includes contacting a treatment fluid comprising an aqueous medium and an enzymatic scavenger with a precipitating fluid to precipitate the enzymatic scavenger; contacting the precipitated enzymatic scavenger with the reservoir fluid comprising the sulfur-containing compound; and reducing a number of the sulfur-containing compound in the reservoir fluid.Type: GrantFiled: April 9, 2018Date of Patent: November 5, 2019Assignee: BAKER HUGHES, A GE COMPANY, LLCInventors: Soma Chakraborty, Prasad Dhulipala, Jeffrey Russek, Sunder Ramachandran, Jack Lynn
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Publication number: 20190332089Abstract: Embodiments of the invention provide an untethered apparatus for measuring properties along a subterranean well. According to at least one embodiment, the untethered apparatus includes a housing, and one or more sensors configured to measure data along the subterranean well. The data includes one or more physical, chemical, geological or structural properties in the subterranean well. The untethered apparatus further includes a processor configured to control the one or more sensors measuring the data and to store the measured data, and a transmitter configured to transmit the measured data to a receiver arranged external to the subterranean well. Further, the untethered apparatus includes a controller configured to control the buoyancy or the drag of the untethered apparatus to control a position of the untethered apparatus in the subterranean well. The processor includes instructions defining measurement parameters for the one or more sensors of the untethered apparatus within the subterranean well.Type: ApplicationFiled: July 11, 2019Publication date: October 31, 2019Applicant: SAUDI ARABIAN OIL COMPANYInventors: Max DEFFENBAUGH, Gregory D. HAM, Jose Oliverio ALVAREZ, Gregory BERNERO, Sunder RAMACHANDRAN, Miguel GONZALEZ, Sebastian CSUTAK, Christopher POWELL, Huseyin SEREN
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Publication number: 20190309213Abstract: A method of reducing an amount of a sulfur-containing compound in a reservoir fluid includes contacting a treatment fluid comprising an aqueous medium and an enzymatic scavenger with a precipitating fluid to precipitate the enzymatic scavenger; contacting the precipitated enzymatic scavenger with the reservoir fluid comprising the sulfur-containing compound; and reducing a number of the sulfur-containing compound in the reservoir fluid.Type: ApplicationFiled: April 9, 2018Publication date: October 10, 2019Applicant: Baker Hughes, a GE company, LLCInventors: Soma Chakraborty, Prasad Dhulipala, Jeffrey Russek, Sunder Ramachandran, Jack Lynn
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Publication number: 20190308133Abstract: A method of removing impurities from formation fluids includes introducing a formation fluid into a first end of a first tubular, directing the formation fluid along a first flow path toward a second end of the first tubular, redirecting the formation fluid along a second flow path defined by a second tubular arranged radially outwardly of the first flow path toward the first end, spraying a treatment fluid along the first flow path into the formation fluid, and directing a treated formation fluid through an outlet fluidically connected to the second flow path.Type: ApplicationFiled: April 5, 2019Publication date: October 10, 2019Applicant: Baker Hughes, a GE company, LLCInventors: Sunder Ramachandran, James Ott, Mahendra Ladharam Joshi, Pejman Kazempoor, Grant Lynn Hartman, Lily Jiang, Matthew L. George
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Publication number: 20190308136Abstract: An in-line pipe contactor includes a first tubular having an outer surface and an inner surface. The inner surface defines a first flow path and the outer surface defines, in part, a second flow path. A second tubular is arranged radially outwardly of the first tubular. The second tubular includes an outer surface portion and an inner surface portion. The inner surface portion defines at least in part, the second flow path. A first end cap is mounted at the first end. The first end cap supports a first plurality of atomizers. At least one of the first plurality of atomizers is directed along the first flow path. A second end cap is mounted at the second end portion. The second end cap supports a second plurality of atomizers. At least one of the second plurality of atomizers is directed along the second flow path.Type: ApplicationFiled: April 5, 2019Publication date: October 10, 2019Applicant: Baker Hughes, a GE company, LLCInventors: Sunder Ramachandran, James Ott, Mahendra Ladharam Joshi, Pejman Kazempoor, Grant Lynn Hartman, Lily Jiang, Matthew L. George
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Patent number: 10392712Abstract: Pitting corrosion of stainless steel occurs in solutions of organic acid, such as tartaric acid, in an electrolyte solution with methanol. However, methanolic solutions containing at least one organic halide and at least one organic hydroxyl-acid and some water provide reduced pitting corrosion of stainless steel. The organic hydroxyacid may be a hydroxy acid containing 2 to 10 carbon atoms with at least one hydroxyl group and at least one carboxylic acid group, in a non-limiting example, glycolic acid. The pH of the methanolic solution may range from about 3.5 to about 8.Type: GrantFiled: July 8, 2017Date of Patent: August 27, 2019Assignee: Baker Hughes, a GE company, LLCInventors: Zhengwei Liu, Sunder Ramachandran, Vaithilingam Panchalingam, Timothy Z. Garza, Paul Robert Stead, Stuart Edward Cook, Gordon T. Rivers, Vu Thieu, Heather McEachern
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Publication number: 20190112911Abstract: A tool for monitoring conditions within a subterranean well includes a first body segment, the first body segment being an elongated member with an axial protrusion having a reduced outer diameter. A second body segment is sized for mating with the first body segment. A metal specimen circumscribes the axial protrusion of the first body segment so that an outer diameter surface of the metal specimen defines an outer diameter of the tool. A connection assembly releasably secures the first body segment to the second body segment.Type: ApplicationFiled: December 13, 2018Publication date: April 18, 2019Applicant: Saudi Arabian Oil CompanyInventors: Vladimir Jovancicevic, Sunder Ramachandran, Amro Mukhles, Irfan Syafii
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Publication number: 20190048712Abstract: A method for monitoring the quality, stability, and potential deposition of process treatment fluids pumped into subsea umbilical systems includes monitoring a resonator sensor in the subsea umbilical system having a fluid flowing therethrough, where the resonator sensor can be a torsional resonator or a symmetrical sensor, and the method also includes detecting a change in resonance of the resonator sensor indicating the deposition of a chemical species on the resonator sensor or significant change in process treatment fluid physical viscosity and density properties. The resonator sensor can also measure the amount of chemical species deposited. The fluid may be an organic and/or aqueous based fluid. The method includes performing at least one action in response to detecting the change, which action prevents or inhibits blockage of the subsea umbilical system.Type: ApplicationFiled: August 2, 2018Publication date: February 14, 2019Applicant: Baker Hughes, a GE company, LLCInventors: David Wayne Jennings, Paul Robert Stead, Michael J. Deighton, Sunder Ramachandran, Tudor C. Ionescu
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Publication number: 20190015763Abstract: A scavenger comprising a formaldehyde sulfoxylate may be used to scavenge hydrogen sulfide (H2S) from systems that are brine or mixed production. Suitable formaldehyde sulfoxylates include, but are not necessarily limited to, sodium formaldehyde sulfoxylate, zinc formaldehyde sulfoxylate, and calcium formaldehyde sulfoxylate, potassium formaldehyde sulfoxylate, magnesium formaldehyde sulfoxylate, iron formaldehyde sulfoxylate, copper formaldehyde sulfoxylate, alkene aldehyde sulfoxylates, and combinations thereof.Type: ApplicationFiled: July 10, 2018Publication date: January 17, 2019Applicant: Baker Hughes, a GE company, LLCInventors: Scott E. Lehrer, Soma Chakraborty, Sunder Ramachandran, Kimchi T. Phan
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Publication number: 20180282606Abstract: The present disclosure provides a formulation and methods for simultaneously dissolving metal sulfide scales, inhibiting acid gas corrosion, and inhibiting the formation of calcite and barite in a system having low or high shear stress conditions due to fluid movement, in which the formulation contains a THP+ salt, one or more corrosion inhibitors, one or more scale inhibitors, and one or more acid corrosion inhibitors. The formulation may be applied to the system in diluted or undiluted form, and continuously or in batch style.Type: ApplicationFiled: March 21, 2018Publication date: October 4, 2018Applicant: Baker Hughes, a GE company, LLCInventors: Patrick James Rodgers, Brian Lundy, Sunder Ramachandran, David J. Poelker, James D. Ott
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Publication number: 20180201826Abstract: A corrosion inhibitor additive is circulated in a system with a corrosion environment to inhibit metal corrosion. The corrosion inhibitor additive includes a first component and a second component. The second component includes without limitation, imidazolines, amides, quaternary amines, carboxylic acid reaction products, organophosphates, phenathradine derivatives, heterocyclic molecules containing one or both of nitrogen and sulfur, and combinations thereof.Type: ApplicationFiled: January 16, 2018Publication date: July 19, 2018Applicant: Baker Hughes, a GE Company, LLCInventors: Zhengwei Liu, Tracey S. Jackson, Sunder Ramachandran
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Publication number: 20180010441Abstract: A method of wellbore analysis using TM01 and TE01 modes of radar waveforms can include transmitting, at a first time, a radar waveform from a wellhead into a tubing disposed in a wellbore positioned in a reservoir. The radar waveform is either a TM01 mode or a TE01 mode waveform. The tubing includes a fluid, and the surface of the wellbore includes the wellhead. At a second time, a reflected waveform generated by reflecting the transmitted radar waveform on a fluid surface of the fluid is received at the wellhead. A fluid level of the fluid is determined based on the time difference between the first time and the second time, and on a transmission speed of the radar waveform from the wellhead to the fluid surface. The fluid level is a distance between the wellhead and the fluid surface of the fluid.Type: ApplicationFiled: June 16, 2017Publication date: January 11, 2018Inventors: Sunder Ramachandran, Aydin Babakhani
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Patent number: 9828815Abstract: An effective amount of at least one anionic surfactant may be present within a high salinity foamed fluid composition in an effective amount to generate an IFT as low as 10?3 mN/m. The anionic surfactant may be a sulfonate surfactant and/or a sulfate surfactant. The foamed fluid composition may be used to perform an operation, including but not limited to, a gas lift operation, a drilling operation, a completion operation, a stimulation operation, a fracturing operation, an injection operation, an enhanced oil recovery operation, and combinations thereof.Type: GrantFiled: September 10, 2015Date of Patent: November 28, 2017Assignee: BAKER HUGHES, A GE COMPANY, LLCInventors: Scott Joseph Silveira, Sunder Ramachandran
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Publication number: 20170306505Abstract: Pitting corrosion of stainless steel occurs in solutions of organic acid, such as tartaric acid, in an electrolyte solution with methanol. However, methanolic solutions containing at least one organic halide and at least one organic hydroxyacid and some water provide reduced pitting corrosion of stainless steel. The organic hydroxyacid may be a hydroxy acid containing 2 to 10 carbon atoms with at least one hydroxyl group and at least one carboxylic acid group, in a non-limiting example, glycolic acid. The pH of the methanolic solution may range from about 3.5 to about 8.Type: ApplicationFiled: July 8, 2017Publication date: October 26, 2017Applicant: Baker Hughes, a GE company, LLCInventors: Zhengwei Liu, Sunder Ramachandran, Vaithilingam Panchalingam, Timothy Z. Garza, Paul Robert Stead, Stuart Edward Cook, Gordon T. Rivers, Vu Thieu, Heather McEachern
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Publication number: 20170306247Abstract: Hydrogen sulfide (H2S) and/or mercaptan scavengers are chemicals that remove H2S and/or mercaptans from gas, oil and water. Water-based formulations may be made and used employing scavenging compounds having the formulae: wherein each R1, R2, R3, and R4 are the same or different and are selected from the group consisting of hydrogen, an alkyl, an alkenyl, an aryl, an acyl, a halogen, a hydroxyl, a nitro, an alkyl ester, an aryl ester, an alkyl ether, an aryl ether, a hydroxymethyl, an anhydride group, an amino, and a sulfide. In one non-limiting embodiment the compounds (A) and (B) do not contain nitrogen atoms. Water-based formulations, such as those using a protic solvent with the above compounds, work well as H2S scavengers.Type: ApplicationFiled: July 8, 2017Publication date: October 26, 2017Applicant: Baker Hughes, a GE company, LLCInventors: Sunder Ramachandran, Vladimir Jovancicevic, Ying H. Tsang, Michael P. Squicciarini, Philippe Prince, Jianzhong Yang, Kyle C. Cattanach
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Patent number: 9732430Abstract: Pitting corrosion of stainless steel occurs in solutions of organic acid, such as tartaric acid, in an electrolyte solution with methanol. However, methanolic solutions containing at least one organic halide and at least one organic hydroxyacid and some water provide reduced pitting corrosion of stainless steel. The organic hydroxyacid may be a hydroxy acid containing 2 to 10 carbon atoms with at least one hydroxyl group and at least one carboxylic acid group, in a non-limiting example, glycolic acid. The pH of the methanolic solution may range from about 3.5 to about 8.Type: GrantFiled: October 15, 2014Date of Patent: August 15, 2017Assignee: Baker Hughes IncorporatedInventors: Zhengwei Liu, Sunder Ramachandran, Vaithilingam Panchalingam, Timothy Z. Garza, Paul Robert Stead, Stuart Edward Cook, Gordon T. Rivers, Vu Thieu, Heather McEachern
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Publication number: 20170226843Abstract: A tool for monitoring conditions within a subterranean well includes a first body segment, the first body segment being an elongated member with an axial protrusion having a reduced outer diameter. A second body segment is sized for mating with the first body segment. A metal specimen circumscribes the axial protrusion of the first body segment so that an outer diameter surface of the metal specimen defines an outer diameter of the tool. A connection assembly releasably secures the first body segment to the second body segment.Type: ApplicationFiled: February 2, 2017Publication date: August 10, 2017Inventors: Vladimir Jovancicevic, Sunder Ramachandran, Amro Mukhles, Irfan Syafii
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Patent number: 9726594Abstract: An under-deposit corrosion (UDC) sensor includes a probe body with a curved concave probe surface that may have pre-deposited or in-situ formed thereon a material that accelerates the process of under deposit corrosion. The UDC sensor uses electrochemically-based localized monitoring techniques for assessing under-deposit pitting corrosion and the effectiveness of chemical treatment programs that mitigate under-deposit corrosion in well tubing, pipelines, vessels, and/or tanks.Type: GrantFiled: November 18, 2014Date of Patent: August 8, 2017Assignee: Baker Hughes IncorporatedInventors: Vladimir Jovancicevic, Sunder Ramachandran, Carlos M. Menendez
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Patent number: 9708547Abstract: Hydrogen sulfide (H2S) and/or mercaptan scavengers are chemicals that remove H2S and/or mercaptans from gas, oil and water. Water-based formulations may be made and used employing scavenging compounds having the formulae: wherein each R1, R2, R3, and R4 are the same or different and are selected from the group consisting of hydrogen, an alkyl, an alkenyl, an aryl, an acyl, a halogen, a hydroxyl, a nitro, an alkyl ester, an aryl ester, an alkyl ether, an aryl ether, a hydroxymethyl, an anhydride group, an amino, and a sulfide. In one non-limiting embodiment the compounds (A) and (B) do not contain nitrogen atoms. Water-based formulations, such as those using a protic solvent with the above compounds, work well as H2S scavengers.Type: GrantFiled: June 29, 2011Date of Patent: July 18, 2017Assignee: Baker Hughes IncorporatedInventors: Sunder Ramachandran, Vladimir Jovancicevic, Ying H. Tsang, Michael P. Squicciarini, Philippe Prince, Jianzhong Yang, Kyle C. Cattanach
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Patent number: 9587181Abstract: The use of a composition including a transition metal salt and at least one water-soluble aldehyde or water-soluble aldehyde precursor scavenges H2S that is present in aqueous fluids (e.g. produced water liquid streams), natural gas and in oil and mixtures thereof (e.g. mixed production streams that contain all three phases) better than either component when used alone. The resulting scavenger combination significantly increases the reaction rate and the overall scavenging efficiency, i.e. capacity over the case where each component is used alone, in the same total amount. Non-limiting examples of the metal salt include zinc or iron carboxylates, and a non-limiting example of a water-soluble aldehyde or water-soluble aldehyde precursor is ethylene glycol hemiformal.Type: GrantFiled: January 7, 2014Date of Patent: March 7, 2017Assignee: BAKER HUGHES INCORPORATEDInventors: Scott E. Lehrer, Vladimir Jovancicevic, Sunder Ramachandran