Inventor
Ayirala Subhash
SA21 patents
Patents
21 patentsUS10000687B2Jun 19, 2018
Smart water flooding processes for increasing hydrocarbon recovery
SAUDI ARABIAN OIL CO12 citations80
US11421148B1Aug 23, 2022
Injection of tailored water chemistry to mitigate foaming agents retention on reservoir formation surface
SAUDI ARABIAN OIL CO3 citations70
US10429372B2Oct 1, 2019
Smart water flooding processes for increasing hydrocarbon recovery
SAUDI ARABIAN OIL CO3 citations69
US11352867B2Jun 7, 2022
Enhanced hydrocarbon recovery with electric current
SAUDI ARABIAN OIL CO0 citations61
US11274535B1Mar 15, 2022
Seismic assisted flooding processes for oil recovery in carbonates
SAUDI ARABIAN OIL CO0 citations61
US11867038B2Jan 9, 2024
Thickened CO2 in gravity drainage gas injection processes
SAUDI ARABIAN OIL CO0 citations60
US11066910B2Jul 20, 2021
Alkaline water flooding processes for enhanced oil recovery in carbonates
SAUDI ARABIAN OIL CO2 citations60
US11254858B2Feb 22, 2022
Stabilized foams with tailored water chemistry for mobility control in gas injection processes
SAUDI ARABIAN OIL CO0 citations59
US12492621B2Dec 9, 2025
Enhanced oil recovery using fatty acid salts
SAUDI ARABIAN OIL CO0 citations56
US11867036B2Jan 9, 2024
Insitu foam generation to fasten and increase oil production rates in gravity drainage CO2 gas injection
SAUDI ARABIAN OIL CO0 citations56
US11739620B1Aug 29, 2023
Methodology to improve the efficiency of gravity drainage CO2 gas injection processes
SAUDI ARABIAN OIL CO0 citations56
US11993746B2May 28, 2024
Method of waterflooding using injection solutions containing dihydrogen phosphate
SAUDI ARABIAN OIL CO0 citations52
US11041109B2Jun 22, 2021
Enhanced surfactant polymer flooding processes for oil recovery in carbonate reservoirs
SAUDI ARABIAN OIL CO0 citations51
US10738233B2Aug 11, 2020
Pressure pulse assisted injection water flooding processes for carbonate reservoirs
SAUDI ARABIAN OIL CO0 citations50
US11359133B2Jun 14, 2022
Methods for selecting surfactant solutions for use in enhanced oil recovery processes
SAUDI ARABIAN OIL CO0 citations49
US10793767B2Oct 6, 2020
Stabilized foams with tailored water chemistry for mobility control in gas injection processes
SAUDI ARABIAN OIL CO0 citations49
US11814937B2Nov 14, 2023
Methodology for modeling electrokinetic effects and identifying carbonated water injection parameters
SAUDI ARABIAN OIL CO0 citations48
US11525345B2Dec 13, 2022
Method and system for modeling hydrocarbon recovery workflow
SAUDI ARABIAN OIL CO0 citations48
US11668171B2Jun 6, 2023
Methodology to increase oil production rates in gravity drainage CO2 gas injection processes
SAUDI ARABIAN OIL CO0 citations47
US12590017B2Mar 31, 2026
Zero liquid discharge water management system
SAUDI ARABIAN OIL CO0 citations46
US12391567B1Aug 19, 2025
Extraction of alkaline earth metal hydroxides from produced oilfield brine
SAUDI ARABIAN OIL CO0 citations44