Enhanced methods for recovering viscous hydrocarbons from a subterranean formation as a follow-up to thermal recovery processes

HR Motahhari, R Khaledi, N Saber… - US Patent 10,487,636, 2019 - Google Patents
Enhanced methods for recovering viscous hydrocarbons from a subterranean formation as a
follow-up to thermal recovery processes. The methods include injecting a solvent flood …

Thermal recovery methods for recovering viscous hydrocarbons from a subterranean formation

S Doraiswamy, R Khaledi, RD Kaminsky - US Patent 11,002,123, 2021 - Google Patents
Thermal recovery methods for recovering viscous hydrocarbons from a subterranean
formation. The thermal recovery methods include performing a plurality of injection cycles …

Systems and methods for estimating and controlling liquid level using periodic shut-ins

R Gupta, NL Adair, S Doraiswamy, TA Long - US Patent 11,261,725, 2022 - Google Patents
Methods and systems for determining a liquid level in a formation between a horizontal
segment of an injection wellbore and a horizontal segment of a production wellbore are …

Chasing solvent for enhanced recovery processes

J Wang, W Guo, L Dong, C Fang, MD Suitor - US Patent 11,142,681, 2021 - Google Patents
Methods to optimize solvent use in solvent-dominated processes for recovery of
hydrocarbons. Methods include injecting a solvent composition into a reservoir at a pressure …