Inventor
PLUMMER MARK A
US26 patents
Patents
26 patentsUS4723603AFeb 9, 1988
Preventing plugging by insoluble salts in a hydrocarbon-bearing formation and associated production wells
MARATHON OIL CO146 citations98
US6187172B1Feb 13, 2001
Viscosity reduction of crude oils and residuums
MARATHON OIL CO23 citations92
US6736961B2May 18, 2004
Removal of sulfur from a hydrocarbon through a selective membrane
MARATHON OIL CO37 citations86
US4592905AJun 3, 1986
Conversion of hydrogen sulfide to sulfur and hydrogen
MARATHON OIL CO20 citations80
US5334363AAug 2, 1994
Process for recovering sulfur and hydrogen from hydrogen sulfide
MARATHON OIL CO12 citations74
US5180572AJan 19, 1993
Conversion of hydrogen sulfide to sulfur and hydrogen
MARATHON OIL CO14 citations74
US4908064AMar 13, 1990
Road asphalt composition
MARATHON OIL CO8 citations74
US4147638AApr 3, 1979
Sulfonation of crude oils to produce petroleum sulfonates
MARATHON OIL CO12 citations74
US4144266AMar 13, 1979
Sulfonation of crude oils to produce petroleum sulfonates
MARATHON OIL CO10 citations73
US4614623ASep 30, 1986
Sulfonation of crude oils with gaseous SO3 to produce petroleum sulfonates
MARATHON OIL CO8 citations72
US4560517ADec 24, 1985
Sulfonation of crude oils with gaseous SO3 to produce petroleum sulfonates
MARATHON OIL CO9 citations72
US4013125AMar 22, 1977
Flooding with micellar dispersions containing petroleum sulfonates obtained by sulfonating whole or topped crude oil
MARATHON OIL CO11 citations72
US3997451ADec 14, 1976
Sulfonate blends useful for improved oil recovery
MARATHON OIL CO16 citations72
US3964548AJun 22, 1976
Method for oil recovery by flooding with micellar dispersions containing crude oil sulfonates
MARATHON OIL CO8 citations72
US4581128AApr 8, 1986
Hydrocarbon desulfurization process
MARATHON OIL CO10 citations71
US3956372AMay 11, 1976
Process for the production of petroleum sulfonate
MARATHON OIL CO12 citations68
US4707264ANov 17, 1987
Water extraction from hydrocarbons in the presence of asphaltic precipitates
MARATHON OIL CO2 citations63
US4557803ADec 10, 1985
Cracking process catalyst selection based on cation electronegativity
MARATHON OIL CO3 citations63
US4555327ANov 26, 1985
Cracking with tetrachloroaluminate catalysts and water
MARATHON OIL CO2 citations63
US4504378AMar 12, 1985
Sodium tetrachloroaluminate catalyzed process for the molecular weight reduction of liquid hydrocarbons
MARATHON OIL CO2 citations63
US3951828AApr 20, 1976
Process of injecting a micellar dispersion into a subterranean reservoir
MARATHON OIL CO6 citations63
US5736117AApr 7, 1998
Sulfur debonding agent enhancing sulfur recovery from a hydrogen sulfide conversion process
MARATHON OIL CO5 citations61
US4505810AMar 19, 1985
Hydrogen tetrachloroaluminate as a co-catalyst with sodium tetrachloroaluminate for the conversion of heavy hydrocarbons
MARATHON OIL CO3 citations54
US4623445ANov 18, 1986
Sodium tetrachloroaluminate catalyzed process for the molecular weight reduction of liquid hydrocarbons
MARATHON OIL CO0 citations52
US4513163AApr 23, 1985
Conversion of aromatics to iso-paraffins using a NaAlCl4 /HAlCl4 molten salt catalyst system
MARATHON OIL CO0 citations52
US4147637AApr 3, 1979
Oil recovery by increasing the injectivity index of micellar systems containing crude oil sulfonates
MARATHON OIL CO0 citations52