Drilling mud comprising tetrapolymer consisting of N-vinyl-2-pyrrolidone, acrylamidopropanesulfonic acid, acrylamide, and acrylic acid

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5135909
SERIAL NO

07469997

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A water-based drilling fluid comprising a water soluble tetrapolymer in combination with clayey materials.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
Phillips Petroleum CompanyBARTLESVILLE, OK187

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Stephens, Michael Bartlesville, OK 22 92
Swanson, Billy L Bartlesville, OK 19 326

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Phillips Petroleum Company (1)
* 5080809 Polymers useful in the recovery and processing of natural resources 46 1985
 
ICI Australia Limited (1)
* 4358355 Four component amide copolymer 9 1981
 
CALGON CORPORATION (3)
* 4455240 Ampholytic polymers for use as filtration control aids in drilling muds 28 1981
* 4652623 Polymers for use as filtration control aids in drilling muds 30 1984
* 4726906 Polymers for use as filtration control aids in drilling muds 26 1986
 
Mobil Oil Corporation (2)
* 4655942 Controlled release dispersant for clay-thickened, water-based drilling fluids 13 1985
* 4626362 Additive systems for control of fluid loss in aqueous drilling fluids at high temperatures 7 1985
 
CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED (1)
* 4675119 Aqueous drilling and packer fluids 23 1985
 
GEO SPECIALTY CHEMICALS, INC. (1)
* 4622373 Fluid loss control additives from AMPS polymers 15 1984
 
DIAMOND SHAMROCK CHEMICALS COMPANY (2)
* 4699225 Drilling fluids containing AMPS, acrylic acid, itaconic acid polymer 19 1985
* 4741843 Fluid loss control additives and drilling fluids containing same 27 1986
 
THE DOW CHEMICAL COMPANY (1)
* 4432881 Water-dispersible hydrophobic thickening agent 108 1981
 
Union Carbide Corporation (1)
* 4599390 High molecular weight water-soluble polymers and flocculation method using same 27 1985
 
M-I L.L.C. (1)
* 4471097 Water soluble copolymers containing vinyl imidazole as drilling fluid additives 54 1982
 
M-I DRILLING FLUIDS COMPANY (1)
* 4525562 Thermally stable drilling fluid additive 10 1983
 
ALLIED COLLOIDS LIMITED (1)
* 4631137 Materials for use in drilling fluids 10 1984
 
Milchem Incorporated (2)
* 4293427 Drilling fluid containing a copolymer filtration control agent 40 1980
* 4547299 Drilling fluid containing a copolymer filtration control agent 17 1984
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Minnesota Mining and Manufacturing Company (3)
5691026 Fastener member with a dual purpose cover sheet 30 1994
5691027 Fastener with a dual purpose cover sheet 36 1995
5902427 Fastener arrangement with dual purpose cover sheet 21 1997
 
Phillips Petroleum Company (4)
* 5380705 Drilling mud comprising tetrapolymer consisting of n-vinyl-2-pyrrolidone, acrylamidopropanesulfonicacid, acrylamide, and acrylic acid 1 1994
* 5684075 Compositions comprising an acrylamide-containing polymer and process therewith 35 1995
* 5693698 Compositions comprising an acrylamide-containing polymer and process therewith 35 1995
* 6124245 Drilling fluid additive and process therewith 48 1998
 
M-I L.L.C. (1)
6822039 Invertible emulsions stabitised by amphiphilic polymers and application to bore fluids 32 2002
 
CLARIANT INTERNATIONAL LTD. (1)
6465397 Synthetic crosslinked copolymer solutions and direct injection to subterranean oil and gas formations 15 2000
 
CHEVRON PHILLIPS CHEMICAL COMPANY LP (1)
7196039 Methods of reducing fluid loss in a wellbore servicing fluid 2 2003
 
CLARIANT PRODUKTE (DEUTSCHLAND) GMBH (1)
* 6380137 Copolymers and their use as drilling aids 41 2000
 
CONOCOPHILLIPS COMPANY (1)
6030928 Polymers useful in the recovery and processing of natural resources 27 1992
* Cited By Examiner