| Patents for C09K 8 - Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations (31,745) |
|---|
| 04/19/1988 | US4738788 (meth)acrylic acid-(meth)allylsulfonate salt dispersant |
| 04/19/1988 | US4738727 Process for the preparation of an aqueous solution of a heteropolysaccharide |
| 04/14/1988 | DE3734075A1 Verfahren zur verdraengung von oelen aus unterirdischen lagerstaetten mit einem dampfhaltigen medium Method of displacing grease the from underground reservoirs with a vapor-containing medium |
| 04/12/1988 | US4737296 Foaming acid-containing fluids |
| 04/12/1988 | US4737295 With phosphatides |
| 04/12/1988 | US4736796 Tamp hole plug system and method |
| 04/12/1988 | US4736795 Composition and process for enhanced oil recovery |
| 04/12/1988 | CA1235141A1 High charge density, cationic methacrylamide based monomers and their polymers |
| 04/07/1988 | WO1988002434A1 Viscosifiers for brines utilizing hydrophilic polymer-mineral oil systems |
| 04/07/1988 | WO1988002433A1 Corrosion inhibitors for clear, calcium-free high density fluids |
| 04/07/1988 | WO1988002432A1 Corrosion inhibiting composition for zinc halide-based clear, high density fluids |
| 04/07/1988 | WO1988002391A1 Method for inhibiting sulfide stress corrosion cracking and hydrogen induced stepwise cracking |
| 04/06/1988 | EP0262577A2 Manufacture of high molecular weight poly (vinylamines) |
| 04/05/1988 | US4736005 Injection water viscosifier for enhanced oil recovery |
| 04/05/1988 | US4735733 Viscosifier, its uses, and its manufacture |
| 04/05/1988 | US4735732 Filtration control additive for invert emulsion drilling fluids and method of preparation |
| 04/05/1988 | US4735731 Adding miscible or immiscible hydrocarbon |
| 04/05/1988 | US4735659 Compositions and a process for preparing water dispersible polymers |
| 04/05/1988 | US4735265 Method of enhanced oil recovery from subterranean formations |
| 03/30/1988 | EP0261883A2 Well cementing compositons |
| 03/30/1988 | EP0261865A2 Polymeric particles, their manufacture and uses |
| 03/29/1988 | US4734259 Ferrous metal |
| 03/29/1988 | US4733728 Micellar slug for oil recovery |
| 03/29/1988 | US4733727 Carbon dioxide; high-pressure subterranean injection |
| 03/29/1988 | CA1234499A1 Rigidification of semi-solid agglomerations |
| 03/29/1988 | CA1234479A1 Process for acidizing hot siliceous material |
| 03/23/1988 | EP0260888A2 Colloidal silica-based fluid diversion |
| 03/23/1988 | EP0260538A2 Use of expandable synthetic lamellar silicates in aqueous drilling or borehole treatment fluids |
| 03/23/1988 | CN86102133B Process for dissolution of sulphur and dissolvent therefor |
| 03/22/1988 | US4732920 High strength particulates |
| 03/22/1988 | US4732690 Oil recovery composition |
| 03/22/1988 | US4732213 Colloidal silica-based fluid diversion |
| 03/16/1988 | EP0259939A2 Aqueous polysaccharide compositions |
| 03/15/1988 | US4730675 Plugging an abandoned well with a polymer gel |
| 03/15/1988 | US4730674 Plugging a tubing/casing annulus in a wellbore with a polymer gel |
| 03/15/1988 | US4730673 Heated brine secondary recovery process |
| 03/09/1988 | EP0259266A2 Improvements in or relating to organic compounds |
| 03/09/1988 | EP0259111A2 Drilling fluids |
| 03/09/1988 | EP0258968A2 Treatment of iron-containing subterranean formations |
| 03/09/1988 | CN87105729A Potassic drilling mud |
| 03/09/1988 | CN87105225A Water-dispersity polymer composite and preparing method thereof |
| 03/08/1988 | US4730081 Quaternary acrylic esters and amides, polymers, well completion, enhanced oil recovery |
| 03/08/1988 | US4730079 Quaternary oxalkylated polycondensates |
| 03/08/1988 | US4729958 Nuclease |
| 03/08/1988 | CA1233779A1 Method of extracting and reutilizing surfactants from emulsions |
| 03/08/1988 | CA1233723A1 Demulsification of water-in-oil emulsions |
| 03/02/1988 | EP0258013A2 Method for distributing an aqueous solution containing a peroxygen in clay |
| 03/01/1988 | US4728727 Ultrafiltration, sulfonation, metallization |
| 03/01/1988 | US4728696 Amphiphilic monomer and hydrophobe associative composition containing a polymer of a water-soluble monomer and said amphiphilic monomer |
| 03/01/1988 | US4728447 Process and product for dissolving sulfur |
| 03/01/1988 | US4728446 Zinc thiocyanate |
| 03/01/1988 | US4728445 Well drilling fluids and process for drilling wells |
| 03/01/1988 | US4728444 Filtration control additive for invert emulsion drilling fluids and method of preparation |
| 03/01/1988 | US4727938 Trona-enhanced steam foam oil recovery process |
| 03/01/1988 | CA1233410A1 Method and apparatus for plugging a wellbore in high impulse fracturing |
| 03/01/1988 | CA1233409A1 Co.sub.2-enhanced hydrocarbon recovery with corrosion-resistant cement |
| 02/25/1988 | DE3722711A1 Verbessertes oelgewinnungsverfahren mit mischbarem gas unter verwendung eines mit oel und sole vertraeglichen, vorgeformten schaumes Improved oelgewinnungsverfahren compatible with miscible gas using a general with oel and sole, preformed foam |
| 02/24/1988 | EP0256802A1 Method of inhibiting corrosion of metal surfaces in contact with a corrosive hydrocarbon containing medium |
| 02/24/1988 | EP0256538A2 Compositions and a process for preparing water dispersible polymers |
| 02/23/1988 | US4726912 Stable suspensions of carboxymethyl cellulose and their preparation |
| 02/23/1988 | US4726906 Polymers for use as filtration control aids in drilling muds |
| 02/16/1988 | US4725390 Mixing raw material, silicon carbide, and binder then firing |
| 02/16/1988 | US4725379 Process and apparatus for making a solution or dispersion of a hydrosoluble powder |
| 02/16/1988 | US4725372 Water soluble electrolyte and quaternary ammonium salt |
| 02/16/1988 | US4724907 Method and device for blending surfactant mixtures for treatment of oil wells |
| 02/16/1988 | US4724906 Wellbore cementing process using a polymer gel |
| 02/16/1988 | CA1232921A1 Particulate ceramic useful as a proppant |
| 02/16/1988 | CA1232900A1 Process for drilling a well |
| 02/16/1988 | CA1232820A1 Biopolymer formulations and processes for preparing them |
| 02/16/1988 | CA1232751A1 Sintered, spherical, composite pellets prepared from clay as a major ingredient useful for oil and gas well proppants |
| 02/11/1988 | WO1988001010A1 Calcium-free clear high density fluids |
| 02/11/1988 | WO1988000948A1 Method to control and produce novel biopolymers |
| 02/10/1988 | EP0255605A2 Powdery lubricating additive for aqueous drilling fluids |
| 02/09/1988 | US4723605 Using crosslinking agent of mineral acid and chromic carboxylate complex |
| 02/09/1988 | US4723603 Preventing plugging by insoluble salts in a hydrocarbon-bearing formation and associated production wells |
| 02/09/1988 | CA1232610A1 Emulsifying agent for oil based drilling fluids |
| 02/09/1988 | CA1232559A1 Process for preparing a heteropolysaccharide, heteropolysaccharide obtained thereby, its use, and strain ncib 11883 |
| 02/03/1988 | EP0255161A2 Drilling fluid |
| 02/03/1988 | CN86105305A 钻井液 Drilling |
| 02/02/1988 | US4722962 Aqueous solution polymer of an unsaturaged monomer and reaction product of nonionic surfactant with unsaturated isocyanate |
| 02/02/1988 | US4722398 Retarding deposition of paraffin from crude oil or natural gas with alkaline liquids |
| 02/02/1988 | US4722397 Well completion process using a polymer gel |
| 02/02/1988 | US4722396 Injection of tensides |
| 02/02/1988 | CA1232279A1 Salt free phosphobetaines |
| 02/02/1988 | CA1232127A1 Micellar slug for oil recovery |
| 02/02/1988 | CA1232126A1 Treating fines-containing earthen formations |
| 02/02/1988 | CA1232124A1 Oil well drilling clay conditioner |
| 01/28/1988 | WO1988000584A1 Organophilic polyphenolic acid adducts |
| 01/27/1988 | EP0254603A1 Biopolymer granules with high speed solubility and dispersability |
| 01/27/1988 | EP0254412A2 Low toxicity oil composition and use thereof in drilling fluids |
| 01/27/1988 | EP0254342A2 Expandable cement composition |
| 01/26/1988 | US4721577 Stabilized fracturing fluid and method of stabilizing fracturing fluid |
| 01/26/1988 | US4721576 Water, clays, sulfonated styrene itaconic acid copolymer |
| 01/26/1988 | US4721161 Method for decreasing permeability around a wellbore |
| 01/26/1988 | US4721160 Extender, styrene-butadiene latex |
| 01/26/1988 | CA1231837A1 Compositions and methods for reducing the permeability of underground strata |
| 01/20/1988 | CN87104169A Rapid dispersive and dissoluble granula of biopolymer |
| 01/19/1988 | US4720348 Sulfonated ethoxylated alcohol |
| 01/19/1988 | US4720303 Thickening agents and the manufacture and use thereof |
| 01/19/1988 | US4719972 Treatment of steam feedwater with CO2 to reduce oil well reservoir gravel and sand dissolution during steam injection |