Search

Olaf Stokke Phones & Addresses

  • 1505 Dover Dr, Ponca City, OK 74604 (580) 762-2682
  • Tulsa, OK

Publications

Us Patents

Polymer Flood Filtration Improvement

View page
US Patent:
42127483, Jul 15, 1980
Filed:
May 26, 1978
Appl. No.:
5/910158
Inventors:
Howard H. Ferrell - Ponca City OK
Dell Conley - Ponca City OK
Burton M. Casad - Ponca City OK
Olaf M. Stokke - Ponca City OK
Assignee:
Conoco, Inc. - Ponca City OK
International Classification:
E21B 4322
US Classification:
252 855D
Abstract:
Filterability of aqueous solutions of polymers employed to thicken waterfloods such as biopolymers (e. g. heteropolysaccharides) is improved by addition of a surfactant (e. g. a sulfated alkoxylated alcohol). Filterability is further enhanced by addition of an ethoxylated alcohol surfactant and/or an alcohol.

Biopolymer Filterability Improvement By Caustic-Enzyme Treatment

View page
US Patent:
41652576, Aug 21, 1979
Filed:
Mar 13, 1978
Appl. No.:
5/886021
Inventors:
Olaf M. Stokke - Ponca City OK
Assignee:
Continental Oil Company - Ponca City OK
International Classification:
C12D 1304
E21B 4322
US Classification:
435262
Abstract:
In an enhanced recovery process involving flooding of subterranean formations with aqueous mixtures of biopolymers, filterability of the biopolymer is synergistically enhanced by treatment with ESPERASE. RTM. enzyme at a pH range of 12. 5 to 13. The range is narrow and exclusive since pHs as high as 12. 1 give poor results. The biopolymer can be any one containing debris which must be reduced by the enzyme.

Sulfonate For Waterflooding

View page
US Patent:
44352956, Mar 6, 1984
Filed:
May 17, 1982
Appl. No.:
6/379210
Inventors:
Olaf M. Stokke - Ponca City OK
Roy C. Sias - Ponca City OK
Assignee:
Conoco Inc. - Ponca City OK
International Classification:
C09K 702
E21B 4316
US Classification:
252 855D
Abstract:
An improved sulfonate suitable for waterflooding is formed by sulfonating a blend of two alkyl aromatic feedstocks, one being a high molecular weight monoalkylbenzene while the second is a mixture of normal alkyl aromatic compounds such as monoalkyl benzenes, dialkylbenzenes, and diphenyl alkanes. This feedstock is either sulfonated after blending or before blending to provide a blended non-sulfonate/sulfonate ratio in the range of 0. 10 to 0. 25. The sulfonate effectiveness of this system increases as the non-sulfonate/sulfonate ratio increases.

Partially Halogenated Ethane Solvent Removal Of Oleophylic Materials From Mineral Particles

View page
US Patent:
50056557, Apr 9, 1991
Filed:
Mar 28, 1989
Appl. No.:
7/330392
Inventors:
Olaf M. Stokke - Ponca City OK
David A. Flanigan - Cleveland OK
Robert B. Ramsey - Wilmington DE
Robert E. Williams - Houston TX
John Huycke - Ponca City OK
Assignee:
Conoco Inc. - Ponca City OK
International Classification:
B01D 1100
B08D 308
C09K 700
E21B 2106
US Classification:
175 66
Abstract:
1,1-dichloro-2,2,2-trifluoroethane or 1,1-dichloro-1-fluoroethane are employed as solvents to remove oleophylic material from mineral particulates. In one aspect the method of this invention includes the steps of transporting oil-based mud-laden cuttings to a solid feed tank wherein the oil-based cuttings are subjected to turbulent mixing to leave the surface of the cuttings substantially free of oil. The cuttings are then subjected to countercurrent flow of solvent in order to separate oily solvent and fines smaller than a chosen diameter from the heavier solids. The heavier solids are cleaned of any remaining oil-based muds, separated from cleaning solvent and ultimately returned to the sea environment.
Olaf M Stokke from Ponca City, OK, age ~83 Get Report