1
Matthew L Stanley: Coalbed methane drilling. Conoco, John E Holder, May 2, 1995: US05411104 (282 worldwide citation)

A system for drilling low rate coalbed formations wherein the formation has anisotropic fracture characteristics which create low permeability (high volatile B bituminous rank or lower). Typically these coalbeds have vitrinite reflectance less than 0.78 R.sub.o. The system includes drilling and comp ...


2
Colin P Leach: Method and apparatus for deepwater drilling. Conoco, Richard K Thomson, March 21, 1989: US04813495 (257 worldwide citation)

A method and apparatus for drilling subsea wells in water depths exceeding 3000 feet (preferably exceeding 4000 feet). Drilling mud returns are taken at the seafloor and pumped to the surface by a centrifugal pump that is powered by a seawater driven turbine. A low-differential pressure rotating hea ...


3
Lyndon D Boyer, Ardis L Anderson, Michael W Britton: Thermal oil recovery with solvent recirculation. Conoco, Richard W Collins, December 6, 1983: US04418752 (206 worldwide citation)

A process for the production of heavy oil from a subterranean oil reservoir by the injection of a hot aqueous fluid into the reservoir and the injection of a diluent solvent down the production well to produce a blend of solvent and oil having a decreased viscosity. The reservoir oil has a density g ...


4
Burton M Casad, Charles R Clark, Lisa A Cantu, D Philip Cords, Edward F McBride: Process for the preparation of fluid loss additive and gel breaker. Conoco, January 22, 1991: US04986355 (204 worldwide citation)

A melted polymer of hydroxyacetic acid with itself or with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties is subjected to high shear and injected into an organic liquid which is inert to the polymer to form an organic liquid dispersion of very fine polymer particles. ...


5
Lisa A Cantu, Edward F McBride, Marion W Osborne: Formation fracturing process. Conoco, E I Du Pont de Nemours and Company, July 18, 1989: US04848467 (201 worldwide citation)

Hydroxyacetic acid condensation product is used as a fluid loss material in a formation fracturing process in which a fracturing fluid comprising a hydrolyzable aqueous gel is used. The hydroxyacetic acid condensation product degrades at formation conditions to provide hydroxyacetic acid which break ...


6
Lisa A Cantu, Marion W Osborne, Edward F McBride: Well treatment process. Conoco, Richard W Collins, September 18, 1990: US04957165 (194 worldwide citation)

Hydroxyacetic acid condensation product is used as a fluid loss material in a well completion or workover process in which a fluid comprising a hydrolyzable aqueous gel is used. The hydroxyacetic acid condensation product degrades at formation conditions to provide hydroxyacetic acid which breaks th ...


7
Lisa A Cantu, Marvin E Yost: Composition and placement process for oil field chemicals. Conoco, E I DuPont de Nemours and Company, January 22, 1991: US04986354 (191 worldwide citation)

Oil field chemicals are incorporated in microcapsules of the condensation product of hydroxyacetic acid or the co-condensation product of hydroxyacetic acid and other compounds containing hydroxy-, carboxylic acid-, or hydroxycarboxylic acid moieties. The microcapsules are then introduced into an oi ...


8
Alex Sas Jaworsky: Coil tubing string and downhole generator. Conoco, John E Holder, February 8, 1994: US05285204 (180 worldwide citation)

A borehole system for operating a downhole generator suspended on a composite coiled tubing string. The coiled tubing has at least two separate longitudinal chambers to provide separate flow paths. A fluid is pumped from the surface through one flowpath to drive a downhole turbine powered generator ...


9
Charles R Clark, Donald L Whitfill, D Philip Cords, Edward F McBride, Harold E Bellis: Placement process for oil field chemicals. Conoco, E I DuPont de Nemours and Company, January 22, 1991: US04986353 (162 worldwide citation)

Oil field chemicals are incorporated in polymeric particles of the condensation product of hydroxyacetic acid or the co-condensation product of hydroxyacetic acid and other compounds containing hydroxy-, carboxylic acid-, or hydroxycarboxylic acid moieties. The particles are introduced into an oil w ...


10
Dennis R Wilson, Pat Lively, Jamal A Sandarusi, Pete Bowser, Matt Stanley: Coal bed methane recovery. Conoco, Richard W Collins, April 4, 1995: US05402847 (159 worldwide citation)

A process for producing methane from a subterranean coal bed by continuously injecting a carbon dioxide-containing gas into the coal bed and recovering displaced and desorbed methane from a recovery well. The injection gas may be exhaust gas from a hydrocarbon fueled engine.