| Patent Number |
Title Of Patent |
Date Issued |
| 7578968 |
Microbiological control in oil or gas field operations |
August 25, 2009 |
| Processes for effecting biocidal activity in subterranean oil and gas wells being drilled, completed, worked over or produced are described. In general the process comprises blending with aqueous well fluid a biocidally-effective amount of a sulfamate stabilized, bromine-based biocid |
| 7576041 |
Bromine-based sulfamate stabilized breaker composition and process |
August 18, 2009 |
| A process for reducing the viscosity of fracturing fluids in downhole oilfield operations is provided. The process comprises contacting a sulfamate stabilized, bromine-based breaker with an aqueous polysaccharide fracturing fluid, with the breaker present in an amount to reduce the v |
| 7223719 |
Breaker composition and process |
May 29, 2007 |
| A process for reducing the viscosity of fracturing fluids in downhole oilfield operations is provided. The process comprises contacting a sulfamate stabilized, bromine-based breaker with an aqueous polysaccharide fracturing fluid, with the breaker present in an amount to reduce the v |
| 5432152 |
Invert drilling fluid |
July 11, 1995 |
| An environmentally friendly invert drilling fluid comprises a water-in-oil emulsion which includes (a) at least 50 volume percent of a low toxicity base oil, and (b) at least one additive selected from the group consisting of emulsifiers, viscosifiers, weighting agents, oil wetting agent |
| 5240629 |
Refrigerant compositions |
August 31, 1993 |
| This invention relates to a refrigerant composition comprising a major amount of refrigerant and a minor amount of at least one ester of an alkane polycarboxylic acid said polycarboxylic acid having more than two carboxyl groups. |
| 5207940 |
.alpha.-olefin oligomer-phenol lubricant oil adducts |
May 4, 1993 |
| A synthetic oil composition comprising the reaction product of an .alpha.-olefin oligomer derived from an .alpha.-olefin monomer containing from about 6 to 20 carbon atoms and from about 0.01 to 1 mole of a phenol per mole of oligomer. The oil composition can be further reacted to form |
| 5047592 |
Selective hydrogenolysis process |
September 10, 1991 |
| A relatively simple, economical process for the synthesis of epinine and related compounds is described. The process involves subjecting adrenalone, epinephrine or their respective congeners to selective hydrogenolysis using hydrogen and a metal hydrogenolysis catalyst such as pallad |
