Inventor
GALLUP DARRELL L
US49 patents
⚠️ This page may combine multiple inventors who share the name “GALLUP DARRELL L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNION OIL CO
47 patentsUS5656172AAug 12, 1997
pH modification of geothermal brine with sulfur-containing acid
UNION OIL CO59 citations95
US4830766AMay 16, 1989
Use of reducing agents to control scale deposition from high temperature brine
UNION OIL CO78 citations95
US4537684AAug 27, 1985
Control of metal-containing scale deposition from high temperature brine
UNION OIL CO61 citations95
US6375907B1Apr 23, 2002
Hydrogen sulfide abatement with scale control and/or well acidizing
UNION OIL CO28 citations93
US5858245AJan 12, 1999
Inhibition of silicate scale formation
UNION OIL CO32 citations93
US5665242ASep 9, 1997
Inhibition of silica precipitation
UNION OIL CO42 citations93
US5622632AApr 22, 1997
Process for controlling nitrogen dioxide and/or ammonia emissions from geothermal power plants
UNION OIL CO32 citations93
US5614100AMar 25, 1997
Method for water remediation
UNION OIL CO37 citations93
US5531902AJul 2, 1996
Method for water remediation
UNION OIL CO33 citations93
US5409614AApr 25, 1995
Control of scale deposition in geothermal operations
UNION OIL CO25 citations93
US5254225AOct 19, 1993
Recovery of metallic compounds from geothermal brine
UNION OIL CO45 citations93
US5246593ASep 21, 1993
Silica scale deposition control
UNION OIL CO36 citations93
US5061373AOct 29, 1991
Process for treating condensate of steam derived from geothermal brine
UNION OIL CO23 citations93
US5028340AJul 2, 1991
Process for treating sulfide-containing water to reduce sulfide emissions therefrom
UNION OIL CO22 citations93
US5024769AJun 18, 1991
Method of treating an arsenic-containing solution
UNION OIL CO35 citations93
US4522728AJun 11, 1985
Acidifiction of steam condensate for incompatibility control during mixing with geothermal brine
UNION OIL CO47 citations93
US5965031AOct 12, 1999
pH modification of geothermal brine with sulfur-containing acid
UNION OIL CO39 citations92
US5073270ADec 17, 1991
Use of reducing agents to control scale deposition from high temperature brine
UNION OIL CO38 citations92
US4756888AJul 12, 1988
Recovery of silver-containing scales from aqueous media
UNION OIL CO28 citations92
US4500434AFeb 19, 1985
Inhibiting scale precipitation from high temperature brine
UNION OIL CO34 citations92
US6761865B1Jul 13, 2004
Method for synthesizing crystalline magnesium silicates from geothermal brine
UNION OIL CO53 citations91
US5240687AAug 31, 1993
Brine treatment
UNION OIL CO22 citations91
US5145656ASep 8, 1992
Brine treatment
UNION OIL CO33 citations91
US5082492AJan 21, 1992
Recovery of precious metals from aqueous media
UNION OIL CO28 citations91
US5364439ANov 15, 1994
Method to treat geothermal fluid streams
UNION OIL CO30 citations90
US5085782AFeb 4, 1992
Process for controlling the pH of a brine
UNION OIL CO23 citations90
US5730882AMar 24, 1998
Method for remediation of water containing emulsified oils
UNION OIL CO49 citations87
US5879433AMar 9, 1999
Method and apparatus for reducing the acid gas and/or inert particulate content of steam
UNION OIL CO18 citations86
US5190664AMar 2, 1993
Brine heat exchanger treatment method
UNION OIL CO24 citations84
US4615808AOct 7, 1986
Acidification of steam condensate for incompatibility control during mixing with geothermal brine
UNION OIL CO22 citations82
US5145515ASep 8, 1992
Treatment of brine
UNION OIL CO18 citations81
US6019903AFeb 1, 2000
Geothermal brine processing
UNION OIL CO7 citations74
US5413718AMay 9, 1995
Use of added water to achieve 100% injection weight in geothermal operations
UNION OIL CO9 citations74
US5288411AFeb 22, 1994
Control of scale deposition in geothermal operations
UNION OIL CO13 citations74
US5268108ADec 7, 1993
Control of scale deposition in geothermal operations
UNION OIL CO10 citations74
US5182027AJan 26, 1993
Process for treating ammonia and nitrite containing waters to reduce nitrogen oxide emissions therefrom
UNION OIL CO10 citations74
US5167834ADec 1, 1992
Process for treating nitrite-and sulfide-containing water to reduce nitrogen oxide and hydrogen sulfide emissions therefrom
UNION OIL CO13 citations74
US5098578AMar 24, 1992
Treatment of geothermal brine
UNION OIL CO13 citations74
US5032284AJul 16, 1991
Process for treating ammonia and nitrite containing waters to prevent nitric oxide emissions therefrom
UNION OIL CO10 citations74
US4978457ADec 18, 1990
Method of filtering a brine
UNION OIL CO9 citations74
US4869066ASep 26, 1989
Method for the production of usable steam and non-toxic solids from geothermal brine
UNION OIL CO11 citations71
US5290339AMar 1, 1994
Platinum recovery
UNION OIL CO8 citations70
US4874529AOct 17, 1989
Process and apparatus for reducing the concentration of suspended solids in clarified geothermal brine
UNION OIL CO15 citations68
US5979556ANov 9, 1999
Slow acidizing of geological formations
UNION OIL CO16 citations67
US5462668AOct 31, 1995
Use of steam to condensate to dilute brine stream additives
UNION OIL CO3 citations60
US5256301AOct 26, 1993
Control of salt precipitation from geothermal brine
UNION OIL CO5 citations60
US6112524ASep 5, 2000
Method for removing contaminants from geothermal steam
UNION OIL CO1 citations52