Milton K Abdo

41418425, Feb 27, 1979

Mar 28, 1977

5/782141

Milton K. Abdo - Dallas TX

Mobil Oil Corporation - New York NY

E21B 4322

252 855D

Waterflood oil recovery process employing a Xanthomonas polysaccharide as a thickening agent in which the aqueous polysaccharide solution contains a C. sub. 3 -C. sub. 5 aliphatic alcohol. The aliphatic alcohol functions to stabilize the polysaccharide against thermal degradation in reservoirs having temperatures in excess of 60. degree. C. The polysaccharide solution may also contain an alkali metal carbonate which functions with the alcohol to impart further stability to the Xanthomonas polysaccharide solution.

45748870, Mar 11, 1986

Sep 19, 1984

6/651962

Milton K. Abdo - Dallas TX

Mobil Oil Corporation - New York NY

E21B 4322

166275

A method of preparing viscous aqueous liquids containing Xanthomonas polysaccharides for injection into wellbores. The Xanthomonas polysaccharide is dispersed into relatively fresh water. This dispersion of polysaccharide is then mixed with a relatively saline aqueous makeup solution to provide the final thickened aqueous liquid. Trivalent metal ions may be incorporated in the polysaccharide dispersion prior to the addition of the aqueous saline solution in order to complex the polysaccharide. The complexed polysaccharide solutions are useful for selectively blocking high permeability regions in stratified reservoir formations by injecting the complexes into the formation at shear rates which cause a reversible disruption of the complex; the disrupted complexes penetrate the high permeability regions and when the shearing forces decrease at a certain distance from the wellbore, the complexes re-form to block the high permeability regions selectively.

43471463, Aug 31, 1982

Jan 29, 1981

6/229372

Milton K. Abdo - Dallas TX

Mobil Oil Corporation - New York NY

E21B 4322

252 855D

Certain glucans are made useful as mobility control agents in subterranean oil recovery by the addition of a clay flocculant to minimize adsorption losses. Because of the non-ionic character of glucans, these losses are excessive in the absence of the flocculants used herein.

44500840, May 22, 1984

Jun 8, 1982

6/386461

Milton K. Abdo - Dallas TX

Mobil Oil Corporation - New York NY

E21B 4322

252 855D

Certain glucans are made useful as mobility control agents in subterranean oil recovery by the addition of clay flocculant to minimize adsorption loses. Because of the non-ionic character of glucans, these loses are excessive in the absence of the flocculants used herein.

46796290, Jul 14, 1987

Mar 1, 1985

6/707271

Milton K. Abdo - Dallas TX
Alfred R. Jennings - Plano TX

Mobil Oil Corporation - New York NY

E21B 33138

166281

A method for modifying the injectivity profile of hydrocarbonaceous formations penetrated by at least one injection well and one production well which formation contains zones of varying permeabilities. Via this method, ball sealers are used to stop fluids from flowing through a zone of greater permeability while a zone of lesser permeability receives a temporary blocking agent. Thereafter, the ball sealers are removed and the zone of greater permeability is closed with a permanent blocking agent. Subsequently, the temporary blocking agent is removed and water flooding is reinstituted leading to improved oil recovery.