William B Gogarty

US Patent:

39487822, Apr 6, 1976

Filed:

Sep 10, 1973

Appl. No.:

5/395672

Inventors:

Karl D. Dreher - Littleton CO
William B. Gogarty - Littleton CO

Assignee:

Marathon Oil Company - Findlay OH

International Classification:

C09K 702

US Classification:

252 85P

Abstract:

An improved method of drilling a well is effected by circulating in the well a drilling fluid containing lamellar micelles at flow rates predetermined to produce retro-viscous behavior in the drilling fluid at noncryogenic temperatures. The composition contains 4-15% surfactant (preferably petroleum sulfonate having an average equivalent weight of 350-525), 30-70% liquid hydrocarbon, 15-66% water and optionally up to 20% cosurfactant (preferably an alcohol containing 1-20 carbon atoms) and/or electrolyte (preferably inorganic salt) and the micelles have an axial ratio of at least 3. 5. Preferably, the composition has a viscosity of at least 75 cp at a shear rate of 10. sup. -. sup. 1 seconds at 23. degree. C. The composition is substantially optically clear, phase stable, birefrigent, and the flow properties are such that substantially large increases in flow rates, e. g.

US Patent:

40089240, Feb 22, 1977

Filed:

Apr 18, 1975

Appl. No.:

5/569515

Inventors:

William B. Gogarty - Littleton CO
LaVaun S. Merrill - Englewood CO

Assignee:

Marathon Oil Company - Findlay OH

International Classification:

B65G 5330

US Classification:

302 66

Abstract:

Comminuted solids having a specific gravity greater than 1. 0 and having a porosity greater than about 10% are maintained in suspension within a liquid-solids slurry by saturating the pores of the solids with a substance having a specific gravity lower than 1.

US Patent:

42212294, Sep 9, 1980

Filed:

Mar 10, 1976

Appl. No.:

5/665661

Inventors:

Karl D. Dreher - Littleton CO
William B. Gogarty - Littleton CO

Assignee:

Marathon Oil Company - Findlay OH

International Classification:

C01M 140

US Classification:

137 13

Abstract:

A fluidic fluid composition containing lamellar micelles and which exhibits retro-viscous properties at noncryogenic temperatures is composed of 7. 00-7. 35% of a surfactant (preferably petroleum sulfonate having an average equivalent weight of 350-525), 50. 00-54. 00% of liquid hydrocarbon, 24. 80-28. 00% of water and optionally up to 13. 00-13. 95% of a cosurfactant (preferably an alcohol containing 1-20 carbon atoms) and/or electrolyte (preferably inorganic salt). The micelles within the composition must have an axial ratio of at least 3. 5. The composition is substantially optically clear, phase stable, birefrigent, and the flow properties are such that substantially large increases in flow rates, e. g. 20-fold, can be realized at very small pressure increases, e. g. 5%. Additional additives to impart desired properties can be included with the composition.

US Patent:

39376338, Feb 10, 1976

Filed:

Nov 21, 1973

Appl. No.:

5/418158

Inventors:

Bruce L. Knight - Littleton CO
John S. Rhudy - Littleton CO
William B. Gogarty - Littleton CO

Assignee:

Hercules, Incorporated - Wilmington DE

International Classification:

C04B 702

US Classification:

106 90

Abstract:

Water loss from cement slurries is reduced by incorporating within a cement slurry a polymer obtained as a product of radiation-induced polymerization of acrylamide and/or methacrylamide and acrylic acid, methacrylic acid, and/or alkali metal salts thereof. The polymerization is preferably carried out in 10-60% aqueous monomer solution with gamma radiation. The aqueous monomer solution preferably contains 25-99% acrylamide and 75-1% sodium acrylate. The polymer can be present in concentration of about 0. 001 to about 3. 0 weight percent, based on the aqueous phase of the slurry.

US Patent:

40123294, Mar 15, 1977

Filed:

Sep 22, 1975

Appl. No.:

5/615280

Inventors:

John B. Hayes - Littleton CO
Gerald W. Haws - Littleton CO
William B. Gogarty - Littleton CO

Assignee:

Marathon Oil Company - Findlay OH

International Classification:

C09K 702
C09K 706

US Classification:

252 85P

Abstract:

An oil-external microemulsion drilling fluid having a wide range of tolerance for salinity, having good gel strength and low fluid loss characteristics, and also obtained by mixing about 1% to about 30% of a sodium petroleum sulfonate having an average equivalent weight within the range of about 350 to about 525, about 5% to about 84% of a hydrocarbon (e. g. diesel fuel), about 15% to about 90% of an aqueous medium (can contain water soluble salts), about 0. 01 to about 20% of a cosurfactant (e. g. alcohols such as primary amyl alcohol) and about 0. 1 to about 15% of bentonite clay. Weighting agents, e. g. barite, and other desired additives can be added to the microemulsion.

US Patent:

39500349, Apr 13, 1976

Filed:

Nov 23, 1973

Appl. No.:

5/418353

Inventors:

Karl D. Dreher - Littleton CO
William B. Gogarty - Littleton CO

Assignee:

Marathon Oil Company - Findlay OH

International Classification:

B65G 5304

US Classification:

302 66

Abstract:

An improved method of pipelining solids is effected by suspending the solids in a liquid containing lamellar micelles and pumping the mixture at flow rates predetermined to produce retro-viscous behavior in the liquid at noncryogenic temperatures. The liquid is a composition containing 4-15% surfactant (preferably petroleum sulfonate having an average equivalent weight of 350-525), and at least two substantially immiscible liquids (e. g. 30-70% liquid hydrocarbon and 15-66% water) and optionally up to 20% cosurfactant (preferably an alcohol containing 1-20 carbon atoms) and/or electrolyte (preferably inorganic salt). The micelles have an axial ratio of at least 3. 5. Preferably, the composition has a viscosity of at least 75 cp at a shear rate of 10. sup. -. sup. 1 seconds at 23. degree. C. The composition is substantially optically clear, phase stable, birefringent, and the flow properties are such that substantially large increases in flow rates, e. g.

US Patent:

39546276, May 4, 1976

Filed:

Nov 7, 1973

Appl. No.:

5/413462

Inventors:

Karl D. Dreher - Littleton CO
William B. Gogarty - Findlay OH

Assignee:

Marathon Oil Company - Findlay OH

International Classification:

C09K 702
E21B 4326

US Classification:

252 85P

Abstract:

Compositions containing lamellar micelles and which exhibit retro-viscous property at noncryogenic temperatures are prepared by mixing 4-15 percent of a surfactant (preferably an alkaryl sulfonate having an average equivalent weight of 350-525), 30-70 percent of a liquid hydrocarbon, 15-66 percent of water and optionally up to 20 percent of a cosurfactant, preferably an alcohol containing 1-20 carbon atoms, and/or electrolyte (preferably inorganic salt). The micelles have an axial ratio of at least 3. 5 and preferably the composition has a viscosity of at least 75 cp. at a shear rate of 10 sec. sup. -. sup. 1 at 23. degree. C. The composition is substantially optically clear, phase stable, birefringent, and the flow properties are such that substantially large increases in flow rate, e. g. 20-fold, can be realized at very small increases in pressure drop, e. g. 5 percent.