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).
-
Publication number: 20230295486Abstract: A method for inhibiting corrosion of metal surfaces, such as carbon steel tubing, that are in contact with a fluid, such as brine in an oil and gas production fluid containing acid gases (e.g., CO2 and H2S) is accomplished by introducing a corrosion-inhibiting blend of two components into the fluid, where blend is glycolipids and quaternized amines, glycolipids and phosphate-containing compounds, quaternized amines and imidazoline-like compounds, quaternized amines and phosphate-containing compounds, or combinations of these blends. Each of the two components of the blends are present in an amount effective to synergistically inhibiting the corrosion of the metal surface when used together.Type: ApplicationFiled: March 17, 2022Publication date: September 21, 2023Applicant: Baker Hughes Oilfield Operations LLCInventors: Carlos M. Menendez, Sunder Ramachandran, Tracey Jackson
-
Publication number: 20230184104Abstract: 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 appratus 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 definining measurement parameters for the one or more sensors of the untethered apparatus within the subterranean well.Type: ApplicationFiled: February 10, 2023Publication date: June 15, 2023Inventors: Max Deffenbaugh, Gregory D. Ham, Jose Oliverio Alvarez, Gregory Bernero, Sunder Ramachandran, Miguel Gonzalez, Sebastian Csutak, Christopher Powell, Huseyin Seren
-
Patent number: 11578590Abstract: An untethered apparatus for measuring properties along a subterranean well 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: GrantFiled: December 18, 2020Date of Patent: February 14, 2023Assignee: Saudi Arabian Oil CompanyInventors: Max Deffenbaugh, Gregory D. Ham, Jose Oliverio Alvarez, Gregory Bernero, Sunder Ramachandran, Miguel Gonzalez, Sebastian Csutak, Christopher Powell, Huseyin Seren
-
Patent number: 11359126Abstract: 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: GrantFiled: April 29, 2021Date of Patent: June 14, 2022Assignee: Baker Hughes Holdings LLCInventors: Patrick James Rodgers, Brian Lundy, Sunder Ramachandran, David J. Poelker, James D. Ott
-
Patent number: 11313218Abstract: 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: GrantFiled: February 2, 2017Date of Patent: April 26, 2022Assignee: SAUDI ARABIAN OIL COMPANYInventors: Vladimir Jovancicevic, Sunder Ramachandran, Amro Mukhles, Irfan Syafii
-
Patent number: 11229860Abstract: 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: GrantFiled: December 17, 2020Date of Patent: January 25, 2022Assignee: Baker Hughes Holdings LLCInventors: Scott E. Lehrer, Soma Chakraborty, Sunder Ramachandran, Kimchi T. Phan
-
Patent number: 11142831Abstract: A method of preventing or mitigating corrosion on a metallic surface exposed to a supercritical fluid is disclosed. The method includes adding a corrosion inhibitor composition to a supercritical fluid comprising a supercritical carbon dioxide; and contacting the supercritical fluid with a metallic surface, wherein the corrosion inhibitor composition comprises a corrosion inhibitor that has a solubility of greater than 5,000 ppm in the supercritical fluid at 48.9° C. and 2,200 psi.Type: GrantFiled: March 6, 2020Date of Patent: October 12, 2021Assignee: BAKER HUGHES OILFIELD OPERATIONS LLCInventors: Tracey Jackson, Sunder Ramachandran, Zhengwei Liu, Jonathan Stewart-Ayala
-
Patent number: 11118427Abstract: A method of determining a risk of corrosion and scale formation of tubing in a wellbore includes receiving, from a plurality of first sensors positioned at a downhole location of a wellbore, first production stream information and receiving, from a plurality of second sensors positioned at an uphole location, second production stream information. The method also includes performing a material balance to determine a first value representing a difference between a first production steam flow rate at the downhole location and a second production stream flow rate at the uphole location. The method also includes determining a second value representing a critical metal ion concentration of the production stream and, based on a result of comparing the first value with a threshold and based on the second value, determining a third value representing a risk of corrosion and scale formation at the tubing disposed within the wellbore.Type: GrantFiled: September 30, 2019Date of Patent: September 14, 2021Assignee: Saudi Arabian Oil CompanyInventors: Anuj Gupta, Sunder Ramachandran, Sebastian Csutak
-
Patent number: 11091998Abstract: 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: GrantFiled: December 13, 2018Date of Patent: August 17, 2021Assignee: SAUDI ARABIAN OIL COMPANYInventors: Vladimir Jovancicevic, Sunder Ramachandran, Amro Mukhles, Irfan Syafii
-
Publication number: 20210246354Abstract: 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: April 29, 2021Publication date: August 12, 2021Applicant: Baker Hughes, a GE company, LLCInventors: Patrick James Rodgers, Brian Lundy, Sunder Ramachandran, David J. Poelker, James D. Ott
-
Patent number: 11021642Abstract: 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: GrantFiled: March 21, 2018Date of Patent: June 1, 2021Assignee: Baker Hughes Holdings LLCInventors: Patrick James Rodgers, Brian Lundy, Sunder Ramachandran, David J. Poelker, James D. Ott
-
Publication number: 20210140311Abstract: 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 appratus 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: December 18, 2020Publication date: May 13, 2021Applicant: SAUDI ARABIAN OIL COMPANYInventors: Max DEFFENBAUGH, Gregory D. HAM, Jose Oliverio ALVAREZ, Gregory BERNERO, Sunder RAMACHANDRAN, Miguel GONZALEZ, Sebastian CSUTAK, Christopher POWELL, Huseyin SEREN
-
Publication number: 20210101095Abstract: 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: December 17, 2020Publication date: April 8, 2021Applicant: Baker Hughes, a GE company, LLCInventors: Scott E. Lehrer, Soma Chakraborty, Sunder Ramachandran, Kimchi T. Phan
-
Publication number: 20210095563Abstract: A method of determining a risk of corrosion and scale formation of tubing in a wellbore includes receiving, from a plurality of first sensors positioned at a downhole location of a wellbore, first production stream information and receiving, from a plurality of second sensors positioned at an uphole location, second production stream information. The method also includes performing a material balance to determine a first value representing a difference between a first production steam flow rate at the downhole location and a second production stream flow rate at the uphole location. The method also includes determining a second value representing a critical metal ion concentration of the production stream and, based on a result of comparing the first value with a threshold and based on the second value, determining a third value representing a risk of corrosion and scale formation at the tubing disposed within the wellbore.Type: ApplicationFiled: September 30, 2019Publication date: April 1, 2021Inventors: Anuj Gupta, Sunder Ramachandran, Sebastian Csutak
-
Patent number: 10940407Abstract: 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: GrantFiled: July 10, 2018Date of Patent: March 9, 2021Assignee: Baker Hughes Holdings LLCInventors: Scott E. Lehrer, Soma Chakraborty, Sunder Ramachandran, Kimchi T. Phan
-
Patent number: 10900351Abstract: 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: GrantFiled: July 11, 2019Date of Patent: January 26, 2021Inventors: Max Deffenbaugh, Gregory D. Ham, Jose Oliverio Alvarez, Gregory Bernero, Sunder Ramachandran, Miguel Gonzalez, Sebastian Csutak, Christopher Powell, Huseyin Seren
-
Publication number: 20200347718Abstract: This disclosure is directed to the use of a portable Surface Enhance Raman Spectroscopy method to detect, quantify, and/or monitor corrosion inhibitors that are present in fluids in a wide range of concentrations in order to manage corrosion treatment in oil and gas production and refining systems or other industrial systems and to reduce the amount of time spent in obtaining data that is reliable and useful for corrosion control.Type: ApplicationFiled: April 30, 2020Publication date: November 5, 2020Applicant: Baker Hughes, a GE company, LLCInventors: Sankaran Murugesan, Prasad D. Dhulipala, Zhengwei Liu, Sunder Ramachandran
-
Publication number: 20200283913Abstract: A method of preventing or mitigating corrosion on a metallic surface exposed to a supercritical fluid is disclosed. The method includes adding a corrosion inhibitor composition to a supercritical fluid comprising a supercritical carbon dioxide; and contacting the supercritical fluid with a metallic surface, wherein the corrosion inhibitor composition comprises a corrosion inhibitor that has a solubility of greater than 5,000 ppm in the supercritical fluid at 48.9° C. and 2,200 psi.Type: ApplicationFiled: March 6, 2020Publication date: September 10, 2020Applicant: Baker Hughes Oilfield Operations LLCInventors: Tracey Jackson, Sunder Ramachandran, Zhengwei Liu, Jonathan Stewart-Ayala
-
Patent number: 10731457Abstract: 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: GrantFiled: June 16, 2017Date of Patent: August 4, 2020Assignee: Saudi Arabian Oil CompanyInventors: Sunder Ramachandran, Aydin Babakhani
-
Publication number: 20190367799Abstract: A method of removing a metal sulfide deposit from a downhole environment comprises introducing into a subsurface well a treatment fluid comprising an alkane sulfonic acid, a dispersant, and a hydrogen sulfide scavenger; contacting a metal sulfide deposit in the downhole environment with the treatment fluid; and removing the metal sulfide deposit from the downhole environment.Type: ApplicationFiled: September 26, 2017Publication date: December 5, 2019Applicant: Baker Hughes, a GE company, LLCInventors: D.V. Satyanarayana Gupta, Sandra L. Berry, Andrea Nino-Penaloza, Elizabeth McCartney, Sunder Ramachandran, Carlos M. Menendez