Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 7749943 | Method and drilling fluid systems and lost circulation pills adapted to maintain the particle size distribution of component latex particles before and after freezing of the latex particles in the presence of water Latex additives, methods for treating latex additives, drilling fluid systems, and lost circulation pills comprising the latex additives, the latex additive comprising latex particles having a particle size distribution before aging comprising an average particle di... | 07/06/2010 |
| 7393813 | Water-based drilling fluids using latex additives A water-based drilling fluid having a polymer latex capable of providing a deformable latex film on at least a portion of a subterranean formation has been discovered to provide reduced drilling fluid pressure invasion when used to drill in shale formations for hydr... | 07/01/2008 |
| 7252663 | Device and method for the creation of a circumferential cryogenic lesion in a pulmonary vein A device and method for ablating tissue includes a sheath system with an occlusion structure. In certain embodiments, arrhythmias originating in pulmonary veins are treated cryogenically. ... | 08/07/2007 |
| 7157409 | Surfactant-polymer compositions for enhancing the stability of viscoelastic-surfactant based fluid Compositions for increasing the thermal and pressure stability of well fluids viscosified using viscoelastic surfactants, the compositions including an effective amount of an oligomeric or polymeric compound that has a thermally stable backbone structure and at leas... | 01/02/2007 |
| 7147067 | Zeolite-containing drilling fluids Methods and compositions for wellbore treating fluids, especially drilling fluids, that comprise zeolite and a carrier fluid. ... | 12/12/2006 |
| 7056868 | Hydrophobe associative polymers and compositions and methods employing them Water soluble associative polymers and compositions comprising them together with alkali metal salts of carboxylic acid are disclosed. Methods comprise introducing into a wellbore a fluid comprising such associative polymers and alkali metal salts of carboxylic acid... | 06/06/2006 |
| 6908887 | Suspending agent A method and composition is provided for a suspending agent for supporting components in drilling fluids, particularly oil-based drilling fluids, the suspending agent comprising the condensation product of a dimer or trimer fatty acid and diethanolamine. ... | 06/21/2005 |
| 6897186 | Composition and method for dual function soil grouting excavating or boring fluid An excavation fluid composition useful for enlarging a cavity in the earth includes a synthetic polymer and sodium silicate. The excavation fluid composition is formulated so as to enable the fluid in contact with unstable or sandy soils in the selected areas of the... | 05/24/2005 |
| 6828281 | Surfactant blends for aqueous solutions useful for improving oil recovery The present invention relates to an aqueous fluid useful for the recovery of a liquid hydrocarbon from subterranean reservoirs comprising an aqueous media and a surfactant blend. The aqueous fluid has an alkaline pH. The surfactant blend comprises at least one synth... | 12/07/2004 |
| 6586371 | Liquid compositions which reversibly viscosify or gel under the effect of shear The present invention provides a water-based fluid, in particular for drilling, completion or for any other intervention in a well such as a hydrocarbon well, in which the viscosity is controlled by a system constituted by precipitated silica nanoparticle... | 07/01/2003 |
| 6436878 | Rheology stabilizer for high-temperature high-pressure high-mineralized degree drilling fluids The invention relates to a rheology stabilizer or thinner for high-temperature high-pressure high-mineralized degree drilling fluids, methods of their preparation and use. The rheology stabilizer is a copolymer synthesized by an olefinic acid, ester of an... | 08/20/2002 |
| 6281172 | Quaternary nitrogen containing amphoteric water soluble polymers and their use in drilling fluids Water based drilling fluid compositions which contain at least one viscosity builder and at least one rheological control agent wherein the rheological control agent is an amphoteric polymer, the cationic groups of the amphoteric polymer being quaternary ... | 08/28/2001 |
| 6248697 | Composition and method for a dual-function soil-grouting excavating or boring fluid Compositions and methods useful in creating boreholes, tunnels and other excavations in unstable soils and earth formations, especially those composed partially or wholly of sand, gravel or other granular or permeable material are disclosed. The fluids in... | 06/19/2001 |
| 6124244 | Clear brine drill-in fluid A drilling fluid comprising a blend of brine and additives for maintaining rheological properties in a neutral or slightly acidic brine and a method for using the drilling fluid to drill into a producing formation are disclosed. The drilling fluid compris... | 09/26/2000 |
| 6107256 | Method of and additive for controlling fluid loss from a drilling fluid This invention provides a composition for and a method of using the composition to reduce the loss of liquid from aqueous compositions employed while rotary drilling. The composition of this invention comprises a polymeric material selected from homopolym... | 08/22/2000 |
| 5906966 | Drilling mud additives and in adding viscosification additives to oil-based drilling muds The present invention is based on the discovery that viscosification agents selected from sulfonated and neutralized sulfonated ionomers can be readily incorporated into oil-based drilling muds in the form of an oil soluble concentrate containing the poly... | 05/25/1999 |
| 5789349 | Water-based drilling fluids with high temperature fluid loss control additive This invention relates to an improved water based drilling fluid containing a controlled cross-linked polymeric fluid loss control agent. The novel polymeric fluid loss control agent of this invention exhibits improved thermal stability and other enhanced... | 08/04/1998 |
| 5663123 | Polymeric earth support fluid compositions and method for their use This invention relates to an earth stabilization fluid and to a method for using such an earth stabilization fluid. This invention uses a continuous phase that has been added to a borehole and a polymer material that forms gel masses having desired functi... | 09/02/1997 |
| 5407909 | Earth support fluid composition and method for its use This invention relates to a method for preparing and earth stabilization fluid, a method for using such an earth stabilization fluid and to the earth stabilization fluid itself. This invention uses a continuous phase that has been added to a borehole and ... | 04/18/1995 |
| 5403821 | Drilling fluid additives This invention provides a drilling fluid containing additives composed of copolymers which are obtainable by an industrially favorable process and superior in heat-resisting property. Even though the additives are used in a relatively small amount, such a... | 04/04/1995 |
| 5221489 | Sulfonated polymeric dispersant compositions for subterranean well drilling, completion, and cementing A dispersant for drilling fluids, spacer fluids, completion fluids, cement slurries and mixtures of drilling fluids and cement slurries used for drilling and cementing subterranean wells.... | 06/22/1993 |
| 5132285 | Method for thickening or stabilizing aqueous media with polyamphoteric polysaccharides A method of thickening, stabilizing, controlling mobility, or enhancing water retention in aqueous media and electrolyte-containing aqueous media employs neutrally-charged polyamphoteric graft copolymers of polysaccharides with zwitterionic monomers or ca... | 07/21/1992 |
| 5099928 | Non-polluting dispersing agent for drilling fluids based on freshwater or salt water A non-polluting dispersing agent for drilling fluids based on soft water or salt water. A dispersing agent for aqueous drilling fluids, optionally saline, belonging to the group of polymers and/or copolymers containing acid functions which is characterize... | 03/31/1992 |
| 5096603 | Thermally stable hydrophobically associating rheological control additives for water-based drilling fluids A water soluble polymer which is characterized by the formula: ##STR1## wherein x is 50 mole percent or 662/3 mole percent or 75 mole percent and y+z is 50 mole percent, when x is 50 mole percent, y+z is 331/3 mole percent, when x is 662/3 mole perce... | 03/17/1992 |
| 5032295 | Polymers for use in drilling muds A polymer for use as a deflocculant in drilling muds comprising at least one unsaturated carboxylic acid or its anhydride or salt, at least one unsaturated sulfonic acid or its salt, at least one unsaturated cationic-containing monomer, and optionally, on... | 07/16/1991 |
| 5021170 | Oil-based well bore fluids and gellants therefor An invert emulsion drilling fluid comprised of a liquid oleaginous medium, water, an emulsifier and a gellant comprised of sulfonated ethylene/propylene/5-phenyl-2-norbornene terpolymer and an organophilic clay.... | 06/04/1991 |
| 5008025 | Sulfonate-containing polymer/polyanionic cellulose combination for high temperature/high pressure filtration control in water base drilling fluids A method and composition for improving high temperature and high pressure filtration control in a water base drilling fluid is described. Polyanionic cellulose is combined with a synthetic sulfonate containing vinyl polymer into a drilling fluid to provid... | 04/16/1991 |
| 4978461 | Low and high temperature drilling fluids based on sulfonated terpolymer ionomers The present invention relates to sulfonated thermoplastic terpolymers which are terpolymers of p-methyl styrene, styrene and sodium styrene sulfonate wherein these sulfonated terpolymers function as viscosification agents when added to oil-based drilling ... | 12/18/1990 |
| 4946605 | Aqueous drilling and packer fluids Sulfonated polymers and copolymers are used as thinners in aqueous drilling or packer fluids. The sulfonated polymer has polydispersity below 2 and has a low solution viscosity. It is generally a copolymer of beta-arylamidoalkane sulfonate or allyl sulfon... | 08/07/1990 |
| 4888120 | Water-based drilling and well-servicing fluids with swellable, synthetic layer silicates Synthetic swellable layer silicates corresponding to the following formula MgO.aMA.bAl2 O3.cSiO.sub.2.nH.sub.2 O (I) in which M is Na+ and Li+ having an Na:Li ratio of at least 1; A is F-, OH- ... | 12/19/1989 |
| 4812244 | Well drilling fluids and process for drilling wells The rheological characteristics of aqueous well drilling fluids are improved by incorporating into the fluids small amounts of sulfonated styrene-maleimide copolymers and at least one water-soluble polymer prepared from acrylic acid or acrylate or their d... | 03/14/1989 |
| 4740318 | Well drilling fluids and process for drilling wells The rheological characteristics of aqueous well drilling fluids are improved by incorporating into the fluids small amounts of sulfonated styrene-maleic anhydride copolymers and at least one water-soluble polymer prepared from acrylic acid or acrylamide o... | 04/26/1988 |
| 4728445 | Well drilling fluids and process for drilling wells The rheological characteristics of aqueous well drilling fluids are improved by incorporating into the fluids small amount of sulfonated styrene-itaconic acid copolymers and at least one water-soluble polymer prepared from acrylic acid or acrylamide or th... | 03/01/1988 |
| 4721576 | Well drilling fluids and process for drilling wells The rheological characteristics of aqueous well drilling fluids are improved by incorporating into the fluids a small amount of a sulfonated styrene-itaconic acid copolymer.... | 01/26/1988 |
| 4690996 | Inverse emulsions Polysaccharide graft copolymers are prepared by a water-in-oil emulsion polymerization process in which the polysaccharide and water-soluble monomer are emulsified in an oil phase containing emulsifying agents and polymerized therein. The resultant emulsi... | 09/01/1987 |
| 4655942 | Controlled release dispersant for clay-thickened, water-based drilling fluids A clay-thickened, water-based drilling fluid composition demonstrating enhanced stability at the elevated temperatures encountered in deep drilling oil and gas recovery operations in described. The drilling fluid composition comprises an aqueous clay disp... | 04/07/1987 |
| 4650593 | Water-based drilling fluids having enhanced fluid loss control A water based drilling fluid and process for using the same comprising a mixture of water and a polymer complex, wherein the polymer complex is the reaction product of a dispersant selected from the group consisting of lignite, sulfonated lignite, lignosu... | 03/17/1987 |
| 4647859 | Method for effecting electric well logging with introduction of a fluid composition to minimize the effect of interfering ions A method of effecting an improved electric log of a subterranean clay-containing formation ion which a chloride-containing fluid is present which comprises introducing a fluid composition comprising a selected potassium salt of a water-soluble organic aci... | 03/03/1987 |
| 4644035 | Process for sulfonating of polymers containing dicarboxylic acid cyclic imide units A process for producing sulfonated polymers containing styrene moieties and cyclic imide moieties comprises reacting a styrene/maleic anhydride copolymer with a primary amine to produce a polyimide and then subjecting the polyimide to sulfonation wherein ... | 02/17/1987 |
| 4631137 | Materials for use in drilling fluids Bentonites can be extended for use in drilling muds by addition of a novel polymer blend comprising a low molecular weight water soluble non-ionic or anionic polymer and a high molecular weight anionic polymer.... | 12/23/1986 |
