| 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) |
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| 06/01/1994 | EP0599474A2 Controlling iron in aqueous well fracturing fluids |
| 06/01/1994 | EP0599385A1 Process for preparing sulfonated paraffins with a larger content of polysulfonated species |
| 05/31/1994 | US5316792 Hydraulic fracturing and propping using as proppants particles coated with heat curable resin reacted with formaldehyde-metal compound complex |
| 05/31/1994 | US5316083 Method for drilling a well |
| 05/31/1994 | US5316082 Method of effectively diverting treating fluid from a high permeability interval during well stimulation |
| 05/26/1994 | WO1994011461A1 Method of sealing off water-influx points in rock formations |
| 05/26/1994 | DE4339801A1 Säurezusammensetzung und Verfahren zu ihrer Herstellung sowie Verfahren zum Behandeln einer untertägigen Formation mit der Säurezusammensetzung Acid composition and process for their preparation as well as methods for treating an underground formation with the acid composition |
| 05/26/1994 | DE4307335C1 Microbiological improvement of crude oil recovery - by injecting inoculum of Clostridium bacteria and molasses soln. into oil bearing stratum |
| 05/26/1994 | CA2149029A1 Method of sealing off water-influx points in rock formations |
| 05/25/1994 | EP0598378A1 Blended drilling fluid thinner |
| 05/25/1994 | EP0597976A1 Improved calcium carboxylate antiwear additives. |
| 05/25/1994 | CN1087156A Controlling iron in aqueous well fracturing fluids |
| 05/25/1994 | CN1087108A Blended drilling fluid thinner |
| 05/24/1994 | US5315010 Thermal polymerization of aspartic acid powder to polysuccinimide followed by hydrolysis |
| 05/24/1994 | US5314615 In-situ reduction of oil viscosity during steam injection process in EOR |
| 05/24/1994 | US5314031 Directional drilling plug |
| 05/24/1994 | US5314023 Method for selectively treating wells with a low viscosity epoxy resin-forming composition |
| 05/24/1994 | US5314022 Dilution of drilling fluid in forming cement slurries |
| 05/24/1994 | US5314019 Method for treating formations |
| 05/24/1994 | CA2006981C Enhanced oil recovery with high molecular weight polyvinylamine formed in-situ |
| 05/18/1994 | EP0586383A4 Breaker chemical encapsulated with a crosslinked elastomer coating |
| 05/18/1994 | EP0585228A4 Encapsulated breaker chemical with a multi-coat layer urea |
| 05/18/1994 | EP0555210A4 Microbiocidal combinations of materials and their use |
| 05/17/1994 | US5312807 Method of improving absorption of salt water by water-swellable clay by redrying |
| 05/17/1994 | US5311946 Method and process for the stabilization of resin coated particulates |
| 05/17/1994 | US5311945 Combining water, calcium, magnesium, or zinc oxides, and phosphorus acid to produce cementitious slurry |
| 05/17/1994 | US5311944 Blast furnace slag blend in cement |
| 05/17/1994 | US5311943 Enhanced oil recovery |
| 05/17/1994 | CA1329564C Recovery of oil from oil reservoirs |
| 05/17/1994 | CA1329473C Amino resin modified xanthan polymer gels for permeability profile control |
| 05/11/1994 | WO1994009852A1 Viscoelastic surfactant based foam fluids |
| 05/11/1994 | EP0596695A1 Subterranean temporary plugging |
| 05/11/1994 | EP0596209A2 Cross-linked castor oil derivatives |
| 05/11/1994 | CN1086577A Method for drilling and cementing a well |
| 05/11/1994 | CN1086576A Method for drilling and cementing a well |
| 05/11/1994 | CN1086575A Drilling and cementing a well |
| 05/10/1994 | US5310489 Borate cross-linking solutions |
| 05/10/1994 | US5310003 Method for acid fracturing a subterranean formation |
| 05/10/1994 | US5310002 Fracturing fluid for gas formations, microemulsions, foaming agents |
| 05/10/1994 | US5309999 Cement slurry composition and method to cement wellbore casings in salt formations |
| 05/10/1994 | US5309997 Well fluid for in-situ borehole repair |
| 05/10/1994 | US5309995 Well treatment using ball sealers |
| 05/10/1994 | CA1329351C Microbiocidal combinations of materials and their use |
| 05/04/1994 | EP0595660A2 Fluid loss reducing additive for cement compositions |
| 05/04/1994 | EP0595559A1 Method of fracturing subterranean formation |
| 05/04/1994 | CN1086298A Process for recovering and causing highly viscous petroleum products to flow |
| 05/04/1994 | CN1086286A Method for drilling and cementing a well |
| 05/04/1994 | CN1024425C Process for selective blocking middle and high osmotic zone of under-ground oil gas area |
| 05/03/1994 | US5308547 Mixed metal layered hydroxide hydrophilic organic material as thickeners for water and other hydrophylic fluids |
| 05/03/1994 | US5307878 Polymer enhanced foams for reducing gas coning |
| 05/03/1994 | US5307877 Using a water soluble polymer |
| 05/03/1994 | US5307876 Method to cement a wellbore in the presence of carbon dioxide |
| 05/03/1994 | US5307875 Matrix acidizing in sandstone formations |
| 05/03/1994 | US5307874 Method for treating formations with gelatin |
| 05/03/1994 | CA2030573C Crosslinked vinylamine polymer in enhanced oil recovery |
| 05/03/1994 | CA1328992C Shale-stabilizing drilling fluid additives |
| 05/01/1994 | CA2102040A1 Low fluid loss cement compositions, fluid loss reducing additives and methods |
| 04/28/1994 | WO1994009254A1 Method of propagating a hydraulic fracture using fluid loss control particulates |
| 04/28/1994 | WO1994009253A1 Composition for use in well drilling and maintenance |
| 04/28/1994 | WO1994009252A1 Drilling and cementing a well |
| 04/28/1994 | WO1994009251A1 Method for drilling and cementing a well |
| 04/28/1994 | WO1994009250A1 Method for drilling and cementing a well |
| 04/28/1994 | WO1994009249A1 Method for drilling and cementing a well |
| 04/28/1994 | CA2147493A1 Method for drilling and cementing a well |
| 04/28/1994 | CA2147492A1 Drilling and cementing a well |
| 04/28/1994 | CA2147490A1 Method for drilling and cementing a well |
| 04/28/1994 | CA2147487A1 Method for drilling and cementing a well |
| 04/27/1994 | EP0594479A1 Process to reduce the tendency to agglomerate of hydrates in production effluents |
| 04/27/1994 | EP0594364A1 Delayed release borate crosslinking agent |
| 04/27/1994 | EP0594363A1 Borate crosslinked fracturing fluids |
| 04/26/1994 | US5306340 Oil wells |
| 04/26/1994 | US5305832 Method for fracturing high temperature subterranean formations |
| 04/26/1994 | US5305831 Wellbore cementing process |
| 04/20/1994 | EP0593294A1 Amine derivatives as corrosion inhibitors |
| 04/20/1994 | EP0593230A1 Metal corrosion inhibiting compositions |
| 04/19/1994 | US5304620 Method of crosslinking cellulose and guar derivatives for treating subterranean formations |
| 04/19/1994 | CA1328559C Process to retard the formation of hydrates or to reduce their tendency to agglomerate |
| 04/14/1994 | WO1994008126A1 Method for cement placement in horizontal wells |
| 04/14/1994 | CA2144846A1 Means for improving cement placement in horizontal wells |
| 04/13/1994 | EP0592252A1 Reducing gas coning and fingering in a hydrocarbon-bearing formation |
| 04/13/1994 | EP0592217A2 Well cementing |
| 04/12/1994 | US5302728 Heating polyol, removing water, continuing thermal condensation, admixing phenolic hydroxy-containing compound |
| 04/12/1994 | US5302695 Polycondensation of epoxy alcohols with polyhydric alcohols and thermal condensation to form polyethercyclicpolyols |
| 04/12/1994 | US5302293 Method of controlling iron in produced oilfield waters |
| 04/12/1994 | US5301754 Wellbore cementing with ionomer-blast furnace slag system |
| 04/12/1994 | US5301753 Use of scleroglucan as high temperature additive for cement slurries |
| 04/12/1994 | US5301752 Drilling and cementing with phosphate-blast furnace slag |
| 04/12/1994 | US5301751 Method for using soap as a soluable fluid loss additive in the hydraulic fracturing treatment of oil and gas wells |
| 04/12/1994 | US5301539 Method for improving enhanced recovery of oil using surfactant-stabilized foams |
| 04/10/1994 | CA2108063A1 Well cement compositions having improved properties and methods |
| 04/05/1994 | US5300542 Additive composition for oil well cementing formulations having nonionic and anionic surfactant stablizers to improve the fluid loss properties thereof |
| 04/05/1994 | US5299638 Process for transporting particles in a porous medium |
| 04/05/1994 | CA1328328C Water soluble polymers containing allyloxybenzenesulfonate monomers |
| 03/31/1994 | WO1994006998A1 Hydraulic fracturing technique employing in situ precipitation |
| 03/31/1994 | WO1994006899A1 Detergent mixtures |
| 03/31/1994 | WO1994006883A1 Solids-free, essentially all-oil wellbore fluid |
| 03/31/1994 | WO1994006882A1 Load bearing fluid |
| 03/31/1994 | WO1994006881A1 Pretreated clays, their preparation and use in formulating drilling muds not aggressive to layer clays |
| 03/31/1994 | EP0639241A4 Encapsulated breaker chemical. |
| 03/31/1994 | CA2145090A1 Pretreated clays, their preparation and use in formulating drilling muds not aggressive to layer clays |