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...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7842651 | Silicate drilling fluid composition containing lubricating agents and uses thereof The present disclosure relates to the compositions of a water-based silicate drilling fluid comprising: (1) alkali metal silicates; (2) cationic polyacrylamide; (3) a lubricant composition; and (4) other conventional drilling fluid additives. The lubricant compositi... | 11/30/2010 |
| 7635667 | Multi-component drilling fluid additive, and drilling fluid system incorporating the additive Multi-component additive for incorporation into a drilling fluid, and a drilling fluid system comprising said multi-component additive. The additive preferably comprises three primary components: (1) a rate of penetration enhancer, namely one of a number of syntheti... | 12/22/2009 |
| 7384892 | Water-based drilling fluids A water-based drilling fluid composition includes water and at least one rheology modifier and/or fluid loss control agent, and at least one other ingredient of polymeric additive, inorganic salts, dispersants, shale stabilizers, weighting agents, or finely divided ... | 06/10/2008 |
| 7256159 | Fluid loss reducer for high temperature high pressure water based-mud application The present invention concerns a water-based drilling mud for utilization in the drilling of oil wells comprising an aqueous phase wherein the aqueous phase contains an oil soluble polymer in the form of a gel as a fluid loss reducer. The subject invention further r... | 08/14/2007 |
| 7220709 | Process of diverting stimulation fluids A process for stimulating a formation is disclosed wherein a diverting fluid is used to divert an acid treatment package from a high permeability or damaged portion of a formation to a low permeability or undamaged portion of a formation. The fluid preferably forms ... | 05/22/2007 |
| 7148183 | Surfactant-polymer composition for substantially solid-free water based drilling, drill-in, and completion fluids Water based drilling, drill-in, and completion fluids comprising surfactant-polymer blends that are effective to generate effective rheology comprising low shear rate viscosity and effective fluid loss control properties. The water based fluids preferably are substa... | 12/12/2006 |
| 7131492 | Divinyl sulfone crosslinking agents and methods of use in subterranean applications This invention relates to divinyl sulfone crosslinking agents, viscosified treatment fluids, and methods of using these compositions in applications wherein viscosified treatment fluids may be used. In one embodiment, this invention provides a method of treating a p... | 11/07/2006 |
| 7077219 | Foamed treatment fluids and associated methods Methods in which temperature is used to control the foaming and/or defoaming of foamed treatment fluids comprising an aqueous liquid, an ionic foaming surfactant, and a gas are provided. A method of treating at least a portion of a subterranean formation is provided... | 07/18/2006 |
| 6994173 | Method of drilling a borehole A method for drilling a borehole employing a drilling fluid including an additive comprising a glucose derivative with pH lowering acid, buffers and surface active agents. The drilling fluid additive preferably exhibits the following properties: activity of approxim... | 02/07/2006 |
| 6800592 | Polymer-enhanced foamable drilling fluid A foamable drilling fluid is provided which includes an aqueous solvent; a surfactant; and a polysaccharide preferably derived from a galactomannan gum. The foamed drilling fluid includes a liquid phase consisting of the aqueous solvent, polysaccharide and surfactan... | 10/05/2004 |
| 6800593 | Hydrophilic polymer concentrates Disclosed is a hydrophilic, water soluble polymer concentrate for addition to aqueous liquids to enhance the properties thereof, particularly to increase the viscosity or decrease the fluid loss of well drilling and servicing fluids, the concentrate comprising a hyd... | 10/05/2004 |
| 6770603 | Electrically conductive non-aqueous wellbore fluids A wellbore fluid having a non-aqueous continuous liquid phase that exhibits an electrical conductivity increased by a factor in order of 104 to 107 compared to conventional invert emulsion comprises from about 0.2% to about 10% by volume of car... | 08/03/2004 |
| 6762154 | Viscoelastic surfactant fluids stable at high brine concentrations Present invention relates to high brine carrier fluid, said carrier fluid selected from the group consisting of organic acids, organic acid salts, inorganic salts and combination of one or more organic acids or organic acid salts, a co-surfactant and an amount of a ... | 07/13/2004 |
| 6525003 | Electrical well logging fluid and method of using same A well logging fluid is provided having a relatively non-conductive fluid and an effective amount of a salt sufficient to modify the electrical characteristics the relatively non-conductive fluid resulting in a modified fluid or well logging fluid such th... | 02/25/2003 |
| 6194354 | Drilling fluid concentrates A pourable concentrate suitable for forming structured surfactant drilling muds on dilution with aqueous electrolyte comprises: a) from 30 to 80% by weight, based on the weight of the composition, of surfactant consisting of at least 25%, based on the weight o... | 02/27/2001 |
| 6166095 | Method of preparing a drilling fluid comprising structured surfactants A pourable aqueous composition for use as, or for dilution to form, a drilling mud comprises a least 2% by weight of a water soluble polyvalent metal salt of an alkyl polyoxyalkylene sulphuric or carboxylic acid, and at least 1% by weight of a correspondi... | 12/26/2000 |
| 5783525 | Oil in water emulsion well servicing fluids A thermally stable well servicing fluid includes a fluid portion in the form of an oil-in-water emulsion; and a surfactant mixture including an anionic surfactant selected from the group consisting of alkali metal salts of alkyl sulphates, alkali metal sa... | 07/21/1998 |
| 5707940 | Environmentally friendly water based drilling fluids An oil-in-water emulsion composition is disclosed which comprises a mixture of brine and; (A) at least one natural oil or synthetic triglyceride of the formula ##STR1## wherein R1, R2 and R3 are independently saturated or ... | 01/13/1998 |
| 5658860 | Environmentally safe lubricated well fluid method of making a well fluid and method of drilling A well fluid emusion having a water phase and an oil phase of a sulfurized alcohol and a naturally occuring fat, oil or derivatives thereof. Also disclosed is a method of lubricating drilling equipment used in conjunction with the drilling, completion or ... | 08/19/1997 |
| 5593954 | Friction modifier for water-based well drilling fluids and methods of using the same A drilling fluid composition comprising a mixture of a brine (A) an emulsifier, and (B) an oil soluble friction modifier of the following formula: ##STR1## where X=1 to 4, z=1 to 6, Q=0 to 2 R1 and R2 are independently H or an a... | 01/14/1997 |
| 5593953 | Friction modifier for oil-based (invert) well drilling fluids and methods of using the same This invention relates to a composition comprising a water-in-oil emulsion formed from a brine, a liquid oil, (A) an emulsifier, (B) a friction modifier of the following formula: ##STR1## where X=1 to 4, z=1 to 6, Q=0 to 2 R1 and R2 | 01/14/1997 |
| 5513712 | Polymer enhanced foam drilling fluid A process employing a polymer enhanced foam in a wellbore as a drilling fluid during a wellbore drilling operation. The polymer enhanced foam is formed from an uncrosslinked acrylamide polymer, a surfactant, an aqueous solvent, and an added gas.... | 05/07/1996 |
| 4891177 | Water-flood surfactant A water-flood surfactant and the method of making it which comprises the steps of mixing, in a reactor, sodium hydroxide with a sulfonated natural petroleum crude, the sodium hydroxide being in excess of the amount required to convert the sulfonate to phe... | 01/02/1990 |
| 4818288 | Dispersant for concrete mixtures of high salt content The invention relates to condensation products of aldehydes and ketones, which contain acid groups and are especially suitable as dispersants for binding agent mixtures of high salt content.... | 04/04/1989 |
| 4816303 | Process for inhibiting corrosion of metal and corrosion-inhibiting layer use therein Corrosion of ferrous metal and aluminum surfaces, in particular, is inhibited by a layer of an organic-metallic complex of a polyamine with a (i) metal oxide, or (ii) metallate ion, or (iii) water-soluble metallate salt, in aqueous systems having a pH gre... | 03/28/1989 |
| 4802998 | Powder-form lubricant additives for water-based drilling fluids Powder-form lubricant additives for water-based drilling fluids which contain from 95 to 30% by weight, based on the total weight of the powder, of highly disperse silicas, from 5 to 70% by weight, based on the total weight of the powder, of one or more f... | 02/07/1989 |
| 4743383 | Drilling fluid additives for use in hard brine environments A drilling fluid additive is disclosed which will prevent water loss into subterranean formations during the drilling of oil and gas wells in hard brine environments. The drilling fluid additive comprises a hydrocarbon, an anionic surfactant, an alcohol, ... | 05/10/1988 |
| 4645608 | Method of treating oil contaminated cuttings A method of treating oil contaminated cuttings comprising the steps of: contacting the oil contaminated cuttings with a detergent solution comprising a solvent and a surfactant selected from the group consisting of alcohol ethoxylates, phenol ethoxylates,... | 02/24/1987 |
| 4596662 | Compositions for use in drilling, completion and workover fluids This invention provides an additive composition for use for example in drilling, completion and workover fluids that minimizes production formation damage by increasing well clean up efficiency and aids in recovering oil held in place by dynamic capillary... | 06/24/1986 |
| 4565647 | Foaming surfactant compositions Foaming compositions containing an alkylpolysaccharide surfactant and a sulfate, sulfonate and/or carboxylate cosurfactant and processes for utilizing foams containing these compositions.... | 01/21/1986 |
| 4524002 | Foaming agent This invention relates to an oil drilling foaming agent comprising a mixture of from about 40% to about 60% by weight of a branched chain hexyl poly(oxyalkanediyl) sulfuric acid or sulfuric salt combined with from about 60% to about 40% by weight of a bra... | 06/18/1985 |
| 4517112 | Modified organophilic clay complexes, their preparation and non-aqueous systems containing them An organophilic clay gellant useful for gelling organic liquids is disclosed which comprises the reaction product of (a) a smectite-type clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of said clay; (b) a primary anion... | 05/14/1985 |
| 4517100 | Lubricating wellbore fluid and method of drilling A wellbore fluid having improved lubricating properties for drilling in formations in the earth comprising water and a lubricant composition containing a mixture of a chlorinated component and a sulfurized component in proportions to produce a lubricant c... | 05/14/1985 |
| 4356096 | Method of enhancing the effect of liquid organic lubricants in drilling fluids Provided is a method of reducing the torque required to rotate the drill string in a rotary well drilling process which comprises adding to the drilling fluid which is being circulated in the wellbore a liquid organic lubricant and a hydrophobic, organoph... | 10/26/1982 |
| 4257902 | Water-based industrial fluids Substantially oil-free aqueous industrial fluids comprise (A) up to as much as 99.9 percent by weight water, (B) at least one substantially water-insoluble functional additive stably dispersed in the water and (C) at least one substantially water-soluble ... | 03/24/1981 |
| 4181617 | Aqueous drilling fluid and lubricant composition An aqueous drilling fluid is provided having a lubricant therein consisting essentially of the reaction product of a fatty vegetable oil with 4,4'-thiodiphenol.... | 01/01/1980 |
| 4172800 | Drilling fluids containing an admixture of polyethoxylated, sulfurized fatty acids and polyalkylene glycols Aqueous drilling fluids containing an admixture of a polyethoxylated sulfurized fatty acid and polyalkylene glycol. Such fluids are especially useful where reduced torque drilling fluids are needed. Another embodiment of this invention relates to a method... | 10/30/1979 |
| 4148736 | Oil recovery process using viscosified surfactant solutions Thioxotropic compositions having initially relatively high viscosity which can decrease with time are prepared by admixing water and chloroform with an anionic surfactant, a cationic surfactant, an acid to adjust the pH of the aqueous phase to 4.5 or less... | 04/10/1979 |
| 4141840 | Drilling fluids containing polyethoxylated, sulfurized fatty alcohols Aqueous drilling fluids containing polyethoxylated sulfurized fatty alcohols. Such fluids are especially useful where reduced torque drilling fluids are needed. Another embodiment of this invention relates to a method of drilling utilizing the above-descr... | 02/27/1979 |
| 4053422 | Drilling fluids containing polyethoxylated tetraalkyl acetylenic diols Aqueous drilling fluids containing a minor amount of polyethoxylated tetraalkyl acetylenic diols. Such fluids are especially useful where reduced torque drilling fluids are needed. Another embodiment of this invention relates to a method of drilling utili... | 10/11/1977 |
