Inventor
KALFOGLOU GEORGE
37 patents
Patents
37 patentsUS4016932AApr 12, 1977
Surfactant oil recovery method for use in high temperature formations containing water having high salinity and hardness
TEXACO INC49 citations96
US5167281ADec 1, 1992
Dialkylate additives for surfactant sytems
TEXACO INC23 citations92
US4296812AOct 27, 1981
Surfacant waterflooding oil recovery method
TEXACO INC37 citations92
US4219082AAug 26, 1980
Lignosulfonate-formaldehyde condensation products as additives in oil recovery processes involving chemical recovery agents
TEXACO INC37 citations92
US4194565AMar 25, 1980
Surfactant oil recovery method for use in high temperature formations containing water having high salinity and hardness
TEXACO INC37 citations92
US4133385AJan 9, 1979
Oxidized lignosulfonates as additives in oil recovery processes involving chemical recovery agents
TEXACO INC46 citations92
US4129183ADec 12, 1978
Use of organic acid chrome complexes to treat clay containing formations
TEXACO INC50 citations92
US6186231B1Feb 13, 2001
Conformance improvement in hydrocarbon bearing underground strata using lignosulfonate-acrylic acid graft copolymer gels
TEXACO INC17 citations84
US4869732ASep 26, 1989
Deoxygenation of aqueous polymer solutions used in enhanced oil recovery processes
TEXACO INC23 citations82
US4344487AAug 17, 1982
Modified lignosulfonates as additives in oil recovery processes involving chemical recovery agents
TEXACO INC23 citations82
US4276933AJul 7, 1981
Surfactant waterflood method for the recovery of oil
TEXACO INC25 citations82
US4269270AMay 26, 1981
Sulfomethylated lignosulfonates as additives in oil recovery processes involving chemical recovery agents
TEXACO INC20 citations82
US4249606AFeb 10, 1981
Lignosulfonates carboxylated with carbon dioxide as additives in oil recovery processes involving chemical recovery agents
TEXACO INC26 citations82
US4236579ADec 2, 1980
Modified lignosulfonates as additives in oil recovery processes involving chemical recovery agents
TEXACO INC29 citations82
US4230183AOct 28, 1980
Method for treating subterranean, clay-containing earth formations
TEXACO INC25 citations82
US4196777AApr 8, 1980
Oxidized lignosulfonates as additives in oil recovery processes involving chemical recovery agents
TEXACO INC25 citations82
US4157115AJun 5, 1979
Lignosulfonates as additives in recovery processes involving chemical recovery processes
TEXACO INC26 citations82
US4143716AMar 13, 1979
Tertiary oil recovery process utilizing a preflush
TEXACO INC25 citations82
US4120358AOct 17, 1978
Surfactant oil recovery method for use in high temperature formations containing water having high salinity and hardness
TEXACO INC30 citations82
US4099537AJul 11, 1978
Method for transportation of viscous hydrocarbons by pipeline
TEXACO INC25 citations82
US4006779AFeb 8, 1977
Lignosulfonates as sacrificial agents in oil recovery processes
TEXACO INC29 citations82
US5009268AApr 23, 1991
Method of using a combination lignosulfonate/polyalkylene glycol system as a sacrificial agent for surfactant flooding
TEXACO INC9 citations74
US4627494ADec 9, 1986
Method of using a lignosulfonate/carbohydrate system as a sacrificial agent for surfactant flooding
TEXACO INC12 citations74
US4343711AAug 10, 1982
Surfactant fluid suitable for use in waterflood oil recovery method
TEXACO INC7 citations74
US4267886AMay 19, 1981
Lignosulfonates carboxylated with chloroacetic acid as additives in oil recovery processes involving chemical recovery agents
TEXACO INC15 citations74
US4235290ANov 25, 1980
Lignosulfonates as additives in oil recovery processes involving chemical recovery agents
TEXACO INC18 citations74
US4231427ANov 4, 1980
Surfactant waterflooding oil recovery method
TEXACO INC11 citations74
US4191253AMar 4, 1980
Surfactant waterflood oil recovery method
TEXACO INC9 citations74
US4172498AOct 30, 1979
Sulfomethylated lignosulfonates as additives in oil recovery processes involving chemical recovery agents
TEXACO INC12 citations74
US4172497AOct 30, 1979
Lignosulfonates carboxylated with chloroacetic acid as additives in oil recovery processes involving chemical recovery agents
TEXACO INC11 citations74
US4147214AApr 3, 1979
Tannin materials as additives in oil recovery processes involving chemical recovery agents
TEXACO INC7 citations74
US4142582AMar 6, 1979
Chrome lignosulfonates as additives in oil recovery processes involving chemical recovery agents
TEXACO INC11 citations74
US4157306AJun 5, 1979
Tertiary oil recovery process utilizing a preflush
TEXACO INC9 citations73
US4153575AMay 8, 1979
Method for transportation of viscous hydrocarbons by pipeline
TEXACO INC8 citations73
US6942031B1Sep 13, 2005
Lignosulfonate-acrylic acid graft copolymers as sacrificial agents for carbon dioxide foaming agents
TEXACO INC10 citations67
US4153573AMay 8, 1979
Oil-in-water emulsions
TEXACO INC3 citations62
US5251698AOct 12, 1993
Method of using lignosulfonate-acrylic acid graft copolymers as sacrificial agents for surfactant flooding
TEXACO INC6 citations58