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Patent No. 5687752

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A space-saving dishwasher, which may be installed within a counter top or table, having a dish-carrying rack that is vertically shiftable through the open top of the dishwasher for facilitating loading and unloading of the dishes.

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Class 507/926 - PACKER FLUID


Subclass of Class 507 - Earth boring, well treating, and oil field chemistry
Definition: Subject matter wherein the well treating composition is
No. of patents: 89
Last issue date: 01/08/2008


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NumberTitleIssue Date
7316275Well treating compositions containing water superabsorbent material and method of using the same
A well treating composition containing a polysaccharide-based water-superabsorbent material has particularly applicability as a thermal insulating, fracturing or acid stimulation fluid. The water-superabsorbent material is capable of absorbing, at a minimum, its own...
01/08/2008
7306039Methods of using crosslinkable compositions
A thermal insulating packer fluid contains water and/or brine, a crosslinkable viscosifying polymer, a crosslinking agent and an optional set retarder. The composition is capable of inhibiting unwanted heat loss from production tubing or uncontrolled heat transfer t...
12/11/2007
7244694Viscoelastic fluids containing nanotubes for oilfield uses
The present invention relates to viscoelastic fluids that contain nanotube structures that may be used advantageously as oilfield stimulation fluids in many different applications, most particularly as a fracturing fluid. Viscoelastic fluid compositions of the prese...
07/17/2007
6933262Controlled hydration of starch in high density brine dispersion
A method for producing a precursor polymer dispersion for addition to a brine for use in drilling and completion operations comprising providing a precursor brine having a first salt content, and mixing a water-soluble polymer with the precursor brine at a sufficien...
08/23/2005
6562764Invert well service fluid and method
A well service fluid and method using same for brine-sensitive formations is disclosed. The fluid is an invert oil emulsion comprising heavy, solids-free brine, an oil or synthetic, and sufficient emulsifier to create the emulsion. The fluid has particula...
05/13/2003
6251837Hydrosoluble silane or siloxane derivative-based copolymer
Hydrosoluble copolymers made of hydrophilic monomers, e.g., acrylamide, and of silane or siloxane derivative-based hydrophobic monomers, e.g., a silane or or siloxane acrylate, is obtained by micellar or heterogeneous radical copolymerization, and such co...
06/26/2001
5721198Elastic solids having reversible stress-induced fluidity
Elastic solids having reversible stress-induced fluidity are prepared, e.g., by combining liquid formulations with a crystalline mixed metal hydroxide conforming substantially to the formula Lim Dd T(OH).sub.(m+2d+3+n.multidot.a) (An...
02/24/1998
5677267Thixotropic fluid for well insulation
A thixotropic thermal insulating fluid includes a heavy hydrocarbon, water and oleophilic clay, wherein said heavy hydrocarbon is present in an amount of between about 75% to about 92% by volume of the fluid, said water is present in an amount of between ...
10/14/1997
5607904Nonionic alkanolamides as shale stabilizing surfactants for aqueous well fluids
The present invention provides nonionic alkanolamides which may be added to drilling fluids in order to minimize hydration and prevent erosion loss of water-sensitive shale substrates. Preferred alkanolamides are acetamide mono- and diethanolamines....
03/04/1997
5559086Epoxy resin composition and well treatment method
In one embodiment, an epoxy resin composition is provided comprising: an epoxy resin and a partially reduced aromatic amine hardening agent. In another embodiment, a well treating composition is provided comprising: an epoxy resin; a partially reduced aro...
09/24/1996
5552377Mud sweep and spacer composition
A composition, especially suitable for use as a mud sweep and a spacer. The composition includes a petroleum-based hydrocarbon, a biopolymer, a thickening agent, a surfactant and potassium chloride. Other optional ingredients in embodiments of the present...
09/03/1996
5363916Method of gravel packing a well
The present invention provides a method of gravel packing a subterranean formation using a gel of a graft copolymer of a hydroxyalkyl cellulose prepared by a redox reaction with vinyl phosphonic acid. The gel is formed by hydrating the graft copolymer in ...
11/15/1994
5316792Method and process for the stabilization of resin coated particulates
The present invention relates to resin coated particulates, the process of forming the particulates, and the particulates, utilization in petroleum well completions. More particularly, the present invention comprises the resin coated particulates and the ...
05/31/1994
5263540Crosslinked hydroxyethylcellulose and its uses
Polymers (and especially hydroxyethylcellulose) are crosslinked using a lanthanide as a crosslinking agent. The crosslinked polymers have utility in well completion, well stimulation, enhanced oil recovery, and subterranean fluid containment operations....
11/23/1993
5232955Process for producing a high strength artificial (cast) stone with high permeability and filter effect
The invention relates to a process for producing a highstrength a furan stone with high permeability and filtering effect mainly for protecting deep-drilled wells yielding mineral oil, natural gas and water against getting choked by sand. A mixture compri...
08/03/1993
5224546Method of breaking metal-crosslinked polymers
A new method is provided for improved degradation of metal-crosslinked polymer gels which are useful in oil and gas well treating operations. In this method an esterified carboxylated chelator is added to the gel. At elevated temperatures, the esterified ...
07/06/1993
5217074Method of fracturing formations
Granules containing a gel breaker are used in a well treatment involving the use of a gelled fluid. The granules exhibit delayed release of the breaker to permit placement of the gelled fluid into the subterranean formation....
06/08/1993
5207934Crosslinked hydroxyethylcellulose and its uses
Polymers (and especially hydroxyethylcellulose) are crosslinked using a lanthanide as a crosslinking agent. The crosslinked polymers have utility in well completion, well stimulation, enhanced oil recovery, and subterranean fluid containment operations....
05/04/1993
5186847Methods of preparing and using substantially debris-free gelled aqueous well treating fluids
The present invention relates to methods of preparing and using substantially debris-free gelled aqueous well treating fluids containing a cellulose gelling agent. The preparation methods comprise the steps of forming a gelled aqueous fluid and then mixin...
02/16/1993
5184679Gravel packing process
An improved gravel packing process is provided in which a gravel pack slurry is thickened with succinoglycan and the slurry further comprises an amount of breaker effective to result in 80 percent settlement of sand from the slurry after a time period lar...
02/09/1993
5076359Method for gravel packing wells
A method for gravel packing perforations against homogeneous or heterogeneous reservoir formations utilizing a shear-thickening or dilatant fluid as the carrier medium of gravel. Use of this fluid provides for rheological behavior which improves both tran...
12/31/1991
5076944Seepage loss reducing additive for well working compositions and uses thereof
The invention provides well working fluid compositions containing cotton burrs ground to certain particle size ranges to decrease the seepage loss of the fluid to fluid permeable formations contacted by the compositions. Also provided is a seepage loss ad...
12/31/1991
5071575Well working compositions, method of decreasing the seepage loss from such compositions, and additive therefor
The invention provides well working fluid compositions containing oat hulls ground to certain particle size ranges to decrease the seepage loss of the fluid to fluid permeable formations contacted by the compositions. Also provided is a seepage loss addit...
12/10/1991
5067565Crosslinkable cellulose derivatives
Novel treating fluid compositions containing crosslinkable non-ionic cellulose derivatives and methods of use in petroleum recovery operations are disclosed. The treating fluid polymers are prepared by reacting vinyl monomers having a crosslinkable substi...
11/26/1991
5062969Crosslinkable interpolymers
The present invention relates to novel crosslinkable interpolymers and methods of use in treating subterranean formations. The novel interpolymers comprise a water soluble monomer, a hydrophobe monomer, and vicinal diol monomer polymerized to form high mo...
11/05/1991
5009798Low fluid loss heavy brines containing hydroxyethyl cellulose
Disclosed are heavy brine compositions containing zinc bromide and one or more soluble salts selected from the group consisting of calcium chloride and calcium bromide, preferably having a density in the range from about 14.2 to about 16.0 pounds per gall...
04/23/1991
4982793Crosslinkable cellulose derivatives
Novel treating fluid compositions containing crosslinkable non-ionic cellulose derivatives and methods of use in petroleum recovery operations are disclosed. The treating fluid polymers are prepared by reacting vinyl or allyl monomers having a crosslinkab...
01/08/1991
4974678Fluid additive and method for treatment of subterranean formations
A method of substantially preventing the adsorption of polysaccharides or removing polysaccharides from clay surfaces in subterranean formations which are present as a result of contact by gravel packing, fracturing or other treatment fluids, by contactin...
12/04/1990
4956104Organophilic polymers
Organophilic polymer adducts which are effective fluid loss control additives for oil base well-working fluids are prepared from an anionic or cationic water soluble polymer and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtain...
09/11/1990
4948428Grouting composition and method for grouting conduits in well bores
A pumpable, rehydratable grout composition comprising a water-swellable clay and an aqueous mixture comprised of a hectorite, an alkaline metal tetraborate, an alkaline metal carbonate and an alkaline metal chloride, the grout composition being useful in ...
08/14/1990
4804484Antifloc additives for sodium bromide compositions
Solid sodium bromide and aqueous sodium bromide solutions incorporate sodium tartrate and one or more amides of nitrolotriacetic acid in order to inhibit floc formation in aqueous sodium bromide solutions in the pH range 6-12 and in order to insure that t...
02/14/1989
4753740Antiflocculating agents for metal halide solutions
A process for making a dry metal halide salt which will not form an insoluble flocculent material upon dissolving in water in which an initial aqueous solution of a metal halide salt is prepared and a member selected from the group consisting of ammonium ...
06/28/1988
4749592Grouting composition
A grouting composition for sealing structures to inhibit water leakage therethrough and for stabilizing soil is provided. The composition is provided as a two-part system. Part A is an aqueous solution of a hydrophililc, water soluble prepolymer having a ...
06/07/1988
4737295Organophilic polyphenolic acid adducts
Organophilic polyphenolic materials which are effective fluid loss control additives for oil base well-working fluids are prepared from a polyphenolic material and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vegeta...
04/12/1988
4728446Corrosion inhibitor for brines
A corrosion inhibiting composition including a solution of at least one alkali or alkaline-earth metal halide in water and specific corrosion inhibiting concentrations of zinc ions and thiocyanate ions, for use in well drilling, completion, packer fluid a...
03/01/1988
4725372Aqueous wellbore service fluids
A wellbore service fluid is provided which contains water, a water soluble electrolyte and as a thickening agent at least one of an amine, a salt of an amine, or quaternary ammonium salt which functions to increase the viscosity of the fluid in the presen...
02/16/1988
4715967Composition and method for temporarily reducing permeability of subterranean formations
This invention relates to a composition and method of temporarily reducing the permeability of subterranean formations penetrated by a wellbore. In particular, it relates to an inexpensive, low molecular weight condensation product of hydroxy acetic acid ...
12/29/1987
4715746Method of strengthening geological formations
The present invention relates to a method of strengthening geological formations in underground workings or mines by introducing reaction mixtures containing a polyisocyanate component (a), a polyol component (b) and optionally auxiliary agents and additi...
12/29/1987
4710306Removing or decreasing iron-caused yellow color in a solution
A process for decolorizing iron-caused yellow color in brine solutions comprising adding a small amount of a soluble metal salt such as alugenite to the brine solution, neutralizing the solution and then filtering the solution to obtain a solution of a de...
12/01/1987
4694905Precured coated particulate material
The present invention relates to coated particulate matter wherein the particles are individually coated with a cured combination of phenolic/furan resin or furan resin to form a precured resin coating on a proppant such as sand, thereby substantially imp...
09/22/1987
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