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)
05/2011
05/05/2011CA2778242A1 Cement compositions comprising latex, pozzolan and/or cement kiln dust and methods of use
05/05/2011CA2778241A1 Methods of cementing in subterranean formations using cement kiln dust in compositions having reduced portland cement content
05/05/2011CA2777618A1 Scale inhibiting particulates and methods of using scale inhibiting particulates
05/04/2011EP2316904A1 Methods of using drilling fluids containing biodegradable organophilic clay
05/04/2011EP2316903A1 Method for preparing using drilling fluids containing biodegradable organophilic clay
05/04/2011EP2315818A1 Release of chemical systems for oilfield applications by stress activation
05/04/2011EP2207863B1 Wellbore fluid
05/04/2011CN1919879B Acrylic polymer latex dispersions as additives for inhibiting paraffin deposits in crude oils and compositions containing same
05/04/2011CN1867617B Superabsorbent polymer aqueous paste and coating
05/04/2011CN102046916A Methods of treating a hydrocarbon containing formation
05/04/2011CN102040998A Oil well acidifier
05/04/2011CN102040997A Emulsified fracturing fluid
05/04/2011CN102040996A Fracturing liquid
05/04/2011CN102040995A Preparation method for high-temperature delay type organic zirconium cross-linking agent
05/04/2011CN102040994A Haloduric sulfamic-acid-type amphoteric surfactant composite system and application thereof in tertiary oil recovery
05/04/2011CN102040993A Oil displacement agent suitable for superhigh temperature superhigh salt and superhigh calcium and magnesium homogenized oil deposit
05/04/2011CN102040992A Rod blockage prevention liquid for carbon dioxide huff-puff enhanced oil recovery and injection method thereof
05/04/2011CN102040991A Low solid phase drilling fluid filter cake removing system
05/04/2011CN102040990A Paraffin inhibitor
05/04/2011CN102040989A Paraffin removing and inhibiting agent
05/04/2011CN102040988A Oil field well cementation filtration-reducing agent and preparation method thereof
05/04/2011CN102040987A Retarder for oil-well cement with 230 DEG C resistance and preparation method thereof
05/04/2011CN102040986A Capsule solution water shutoff agent
05/04/2011CN102040985A Water plugging agent for oil and gas well
05/04/2011CN102040984A Silicate water shutoff liquid
05/04/2011CN102040983A Foam water plugging liquid
05/04/2011CN102040982A Plugging agent for well drilling
05/04/2011CN102040981A Water-based barite plugging agent with thermosensitive property
05/04/2011CN102040980A Thermosensitive water-based barite liquid leakage plugging agent
05/04/2011CN102040979A Composite gel plugging agent
05/04/2011CN102040978A Gel
05/04/2011CN102040977A Foamed water shutoff agent
05/04/2011CN102040976A Water shutoff agent
05/04/2011CN102040975A Silicate plugging agent
05/04/2011CN102040974A Foam stabilizer for flowing production of oil wells
05/04/2011CN102040973A Drilling fluid
05/04/2011CN102040972A Emulsified drilling agent
05/04/2011CN102040971A Inert emulsified drilling fluid
05/04/2011CN102040970A Clay drilling mud
05/04/2011CN102040969A Drilling mud
05/04/2011CN102040968A Drilling mud for gas well
05/04/2011CN102040967A Emulsified slurry
05/04/2011CN102040966A Emulsion mud for well drilling
05/04/2011CN102040965A Treating agent for oil-based mud
05/04/2011CN102040964A Emulsion mud for well drilling
05/04/2011CN102040963A Slurry lubrication regulator
05/04/2011CN102040962A Slurry lubricant
05/04/2011CN102040961A Viscosity reducer for drilling fluid
05/04/2011CN102040960A Slurry treatment agent
05/04/2011CN102040959A Drilling mud lubricant
05/04/2011CN102040958A Drilling fluid water loss slowing agent
05/04/2011CN102040957A Mud foaming inhibitor
05/04/2011CN102040956A Drilling mud foaming inhibitor
05/04/2011CN102040740A Method for reducing viscosity of aqueous solution of hydrophobically associating polymer
05/04/2011CN102040707A Zwitterionic polymer and preparation method thereof
05/04/2011CN101519585B Shearing cross-linking sensitive plugging agent and preparation method thereof
05/04/2011CN101440274B Preparation of drilling fluid
05/04/2011CN101289614B Impervious fluid loss additive for petroleum well drilling
05/04/2011CN101144009B Biology modified silicate drilling fluid system
05/03/2011US7935662 System, method, and apparatus for injection well clean-up operations
05/03/2011US7935661 Method and composition to increase viscosity of crosslinked polymer fluids
05/03/2011US7935660 Process for disruption of filter cakes
05/03/2011US7934554 Methods and compositions comprising a dual oil/water-swellable particle
04/2011
04/30/2011CA2685298A1 Breakers for gelled fracturing fluids
04/28/2011WO2011049929A2 High performance guar for hydraulic fracturing and other applications
04/28/2011WO2011049923A2 Method of reducing the viscosity of hydrocarbons
04/28/2011WO2011048459A1 Process for the recovery of heavy oil from an underground reservoir
04/28/2011WO2011005666A3 Methods for treating hydrocarbon-bearing formations with fluorinated acid compositions
04/28/2011WO2010140033A3 Use of encapsulated chemical during fracturing
04/28/2011WO2009077866A3 Method of removing carbon dioxide emissions from in-situ recovery of bitumen and heavy oil
04/28/2011US20110098377 Method of Controlling Water Production Through Treating Proppants With RPMS
04/28/2011US20110098202 Swellable compositions for borehole applications
04/28/2011US20110094740 Method of treating subterranean formations with porous ceramic particulate materials
04/28/2011US20110094737 Shear-activated viscoelastic surfactant fluid and method
04/28/2011CA2778330A1 Process for the recovery of heavy oil from an underground reservoir
04/28/2011CA2777748A1 Proppants for hydraulic fracturing technologies
04/28/2011CA2775964A1 Method of reducing the viscosity of hydrocarbons
04/27/2011EP2314555A1 Zeolite-containing cement compostion
04/27/2011CN102037110A Improved aqueous-based insulating fluids and related methods
04/27/2011CN102037096A Mutual solvent-soluble and/or alcohol blends-soluble particles for viscoelastic surfactant fluids
04/27/2011CN102037095A Mitigation of elemental sulfur deposition during production of hydrocarbon gases
04/27/2011CN102037023A Graft copolymer, method for the production thereof, and use thereof
04/27/2011CN102031942A On-site construction process of water base barite liquid plugging agent with heat sensitive characteristic
04/27/2011CN102031528A Corrosion inhibitor for preventing corrosion of oil-gas field steel equipment and preparation method thereof
04/27/2011CN102031103A Fracturing fluid system of CO2 cleaning foam
04/27/2011CN102031102A Preparation method and fracturing construction method of locally and continuously mixed clean fracturing fluid additive
04/27/2011CN102031101A Heat-resistant and salt-resistant polymer thickening agent and preparation method thereof
04/27/2011CN102031100A Temperature-resistant salt-resistant thickening agent and preparation method thereof
04/27/2011CN102031099A Foaming agent for highly mineralized water containing barium-strontium ions and gas condensate and preparation method thereof
04/27/2011CN102031098A Recyclable foam base fluid for sand-washing well
04/27/2011CN102031097A Method for enhancing oil well cement slurry
04/27/2011CN102031096A Sea-water-based micro-bubble well completion fluid
04/27/2011CN102031095A High-temperature water-in-oil drilling fluid
04/27/2011CN102031094A Salt resistant high-temperature resistant solid-free environment-friendly well drilling and completing integrated working fluid
04/27/2011CN102030852A Polymer for tertiary oil recovery and preparation method thereof
04/27/2011CN102030806A Tea saponin high-grade fatty ester as well as preparation method and application thereof
04/27/2011CN101618888B Method for preparing calcium bromide solution used for oil drilling
04/27/2011CN101543748B Method for preparing 4-vinyl benzyl surface-active macromonomer
04/27/2011CN101531891B Multifunctional nano-viscosity reduction profile control agent
04/27/2011CN101279938B Alkyl phenol sulfonic polyethenoxy ether sodium monosulfosuccinates and preparation thereof