| 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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| 08/09/1994 | US5336316 Oil and gas wells |
| 08/09/1994 | US5335733 Method for delaying gelation of a gelable polymer composition injected into a subterranean formation |
| 08/09/1994 | US5335726 Introducing monomers, crosslinkers, and azo initiator into formation, allowing polymerization and crosslinking |
| 08/09/1994 | US5335725 Wellbore cementing method |
| 08/04/1994 | WO1994017154A1 Iterated foam process and composition for well treatment |
| 08/03/1994 | EP0608898A1 Water dispersible thickeners comprising hydrophilic polymers coated with particulate fatty acids or the salts thereof |
| 08/03/1994 | EP0462151B1 Aqueous resin preparations for consolidating rock and filling cavities and process therefor |
| 08/03/1994 | CN1025572C Process for restoring the permeability of a subterranean formation |
| 08/02/1994 | US5333698 Wellbore fluid containing oil additive |
| 08/02/1994 | US5333690 Cementing with blast furnace slag using spacer |
| 08/02/1994 | US5333689 Flowing fluid loss agent into the well to form barrier, positioning a screen in said well adjuscent to formation, flowing gravel slurry which contains gelled hydrochoric acid reacts with fluid loss agent to remove barrier |
| 08/02/1994 | US5333687 Long chain alcohol additives for surfactant foaming agents |
| 08/02/1994 | CA2114512A1 Fine particle size cement compositions and methods |
| 08/02/1994 | CA2052525C Microbial manipulations of surfactant-containing foams to reduce subterranean formation permeability |
| 07/27/1994 | EP0607426A1 Process for producing highly viscous petroleum products and pumping them further |
| 07/27/1994 | CN1090011A Polymer enhanced foams for reducing gas coning |
| 07/26/1994 | US5332724 Lost circulation material with corn cob outers |
| 07/26/1994 | US5332041 Water, silica fume, dispersant, magnesium oxide or calcium hydroxide activator, delay additive, well bores |
| 07/26/1994 | US5332037 Squeeze cementing method for wells |
| 07/21/1994 | WO1994016195A1 Polymer enhanced foams for reducing gas coning |
| 07/21/1994 | WO1994016030A1 Non-fluorescing oil-based drilling fluid |
| 07/20/1994 | EP0607039A1 Set retarded cement compositions |
| 07/20/1994 | EP0606553A2 An ester base oil for lubricant compounds and process of making an ester base oil from an organic reaction by-product |
| 07/19/1994 | US5331105 Adding solution of tyrosine derivative to oil well fluids |
| 07/19/1994 | US5331088 Process for making graft copolymers from lignite and vinyl monomers |
| 07/19/1994 | US5330662 Compositions containing combinations of surfactants and derivatives of succinic acylating agent or hydroxyaromatic compounds and methods of using the same |
| 07/19/1994 | US5330015 Application of scleroglucan muds to drilling deviated wells |
| 07/19/1994 | US5330006 Oil mud displacement with blast furnace slag/surfactant |
| 07/19/1994 | US5330005 Control of particulate flowback in subterranean wells |
| 07/15/1994 | CA2113403A1 Cement set retarding additives, compositions and methods |
| 07/13/1994 | CN1089296A Environmentally safe drilling fluid |
| 07/13/1994 | CN1089273A Water-soluble graft polymers |
| 07/12/1994 | US5328880 Fluidity of slurries of kaolin clay using tetraalkylammonium compounds |
| 07/12/1994 | US5327973 Method for variable density acidizing |
| 07/12/1994 | US5327969 Method of preventing gas migration during primary well cementing |
| 07/12/1994 | US5327968 Utilizing drilling fluid in well cementing operations |
| 07/12/1994 | US5327967 Utilization of phosphite salts as nutrients for subterranean microbial processes |
| 07/12/1994 | CA2113016A1 Ester base oil for lubricant compounds and process of making an ester base oil from an organic reaction by-product |
| 07/07/1994 | WO1994015070A1 Methods for matrix acidizing in subterranean formations |
| 07/07/1994 | WO1994015069A1 Method for fracturing high temperature subterranean formations |
| 07/07/1994 | WO1994014919A1 Environmentally safe drilling fluid |
| 07/07/1994 | WO1994014918A1 Rheologically controlled, pumpable, fluid aqueous preparations for use for instance as water-based drilling fluids |
| 07/07/1994 | CA2152778A1 Rheology-controlled flowable and pumpable aqueous preparations, for example for use as water-based drilling muds |
| 07/07/1994 | CA2152393A1 Method for improving matrix acidizing in formations |
| 07/06/1994 | EP0605257A1 Method of cementing subterranean zone |
| 07/06/1994 | EP0605114A1 Well cementing |
| 07/06/1994 | EP0605113A1 Drilling fluid utilisation |
| 07/06/1994 | EP0605084A1 Set retarding additive for cement composition |
| 07/06/1994 | EP0604988A2 Gelling compositions useful for oil field applications |
| 07/06/1994 | CN1088955A Pretreated clays, their preparation and use in formulating drilling muds not aggressive to layer clays |
| 07/05/1994 | US5326854 Flocculation process using lactam or vinyl sulfonate polymer |
| 07/05/1994 | US5325921 Method of propagating a hydraulic fracture using fluid loss control particulates |
| 07/05/1994 | US5325920 Enhanced oil recovery from low permeability reservoirs using organosilicone surfactants |
| 07/05/1994 | CA1330612C Fast dispersing and dissolving biopolymer granules |
| 07/01/1994 | CA2112498A1 Set-activated cementitious compositions and methods |
| 07/01/1994 | CA2103934A1 Set retarding additives, cement compositions and methods |
| 06/29/1994 | EP0604250A1 Use of decahydropyrazino 2,3-b pyrazine for reducing the amount of free or combined hydrogen sulfide contained in a fluid |
| 06/29/1994 | EP0604115A2 Treating subterranean formations with cellulose and guar derivatives |
| 06/28/1994 | US5323857 Method for preventing the rush of water from a water-bearing reservoir |
| 06/28/1994 | CA1330447C Oil based drilling fluids and additives therefor |
| 06/28/1994 | CA1330388C High-temperature diverting agent system for the oil industry and corresponding treatment process |
| 06/25/1994 | CA2110445A1 Fatty acid salts as steam foaming agents |
| 06/23/1994 | CA2102141A1 Use of decahydropyrazino ¬2,3-b| pyrazine to lower the free or combined hydrogen sulfide concentration in a fluid |
| 06/22/1994 | EP0523112B1 Branched ether surfactants and their use in an enhanced oil recovery process |
| 06/22/1994 | EP0523111B1 Branched ether surfactants and their use in an enhanced oil recovery process |
| 06/22/1994 | EP0467921B1 Procedure for the admixture of silicon oxide to a hydraulic cement slurry |
| 06/21/1994 | US5322640 Water soluble corrosion inhibitors |
| 06/21/1994 | US5322630 Amine derivatives as corrosion inhibitors |
| 06/21/1994 | US5322392 Process for rock consolidation and/or cavity filling e.g. in tunnel construction and mining |
| 06/21/1994 | US5322125 Foamed gels to reduce gas coning in matrix environments |
| 06/21/1994 | US5322124 Forcing slurry through casing slits; proton acceptor metal compound and polymer |
| 06/21/1994 | US5322123 Injecting gel composed of polysaccharide crosslinked with titanium orzirconium complex |
| 06/21/1994 | US5322122 Simultaneous acid fracturing using acids with different densities |
| 06/21/1994 | US5322121 Hydraulic fracturing technique employing in situ precipitation |
| 06/21/1994 | CA1330256C Steam enhanced oil recovery method using branched alkyl aromatic sulfonates |
| 06/21/1994 | CA1330255C Lightweight proppants for oil and gas wells and methods for making and using same |
| 06/15/1994 | EP0601774A2 Tank assembly for well stimulation fluids |
| 06/15/1994 | EP0601536A1 Water-soluble graft polymers |
| 06/14/1994 | US5320173 Method of preventing gas coning and fingering in a hydrocarbon bearing formation |
| 06/14/1994 | US5320172 Method for improving cement placement in horizontal wells |
| 06/14/1994 | US5320171 Method of preventing gas coning and fingering in a high temperature hydrocarbon bearing formation |
| 06/14/1994 | US5320161 Loading solution of formaldehyde, methanol, water into vehicle tank, cooling to form gel, transporting, heating to permit flowable discharge |
| 06/14/1994 | CA2030382C Process for in-situ surfactant washing of contaminated soil |
| 06/09/1994 | WO1994012761A1 Method for controlling clathrate hydrates in fluid systems |
| 06/09/1994 | WO1994012589A1 Drilling fluid |
| 06/09/1994 | DE4338867A1 Water-soluble graft copolymers, used as dispersants for concrete etc. |
| 06/09/1994 | CA2149863A1 Method for controlling clathrate hydrates in fluid systems |
| 06/09/1994 | CA2110884A1 Water-soluble graft polymers |
| 06/08/1994 | EP0600343A1 Tin/cerium compounds for lignosulfonate processing |
| 06/08/1994 | EP0599921A1 Ester-free ethers. |
| 06/08/1994 | EP0599832A1 Scale inhibition in oil producing wells. |
| 06/08/1994 | CN1024938C Inhibition of reservoir scale |
| 06/08/1994 | CA2110767A1 Corrosion-resistant tank for well stimulation fluids |
| 06/07/1994 | US5318956 Esters obtained from monocarboxylic acids and monofunctional or polyfunctional alcohols, having specific flash points |
| 06/07/1994 | US5318955 Improving rheology, lubrication, and fluid loss of invert emulsion drilling mud consist of esters adding water insoluble ether, an aquous phase, water-in-oil emulsion, viscosifier, weighting agent, additive, and alkali reserve |
| 06/07/1994 | US5318954 Use of selected ester oils of low carboxylic acids in drilling fluids |
| 06/07/1994 | US5318953 Method of improving water-swellable clay properties by re-drying, compositions and articles |
| 06/07/1994 | US5318709 Enhanced oil recovery using mixture of alkyl ether sulfonate and alkoxylated alcohol produced by reacting alkyl ether sulfate with aqueous alkali metal sulfite solution |
| 06/07/1994 | CA2006482C Method for improving enhanced recovery of oil using surfactant-stabilized foams |
| 06/07/1994 | CA1329983C Method of removing polymer gels from a petroleum reservoir |