| 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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| 02/20/2013 | EP2558545A1 Electrically conductive oil-based drilling fluids |
| 02/20/2013 | CN102939354A Surfactant-less alkaline-polymer formulations for recovering reactive crude oil |
| 02/20/2013 | CN102939353A Microbiological control in oil and gas operations |
| 02/20/2013 | CN102936493A Hydrogenation thermochemical yield increase solution composition for low-permeability gas well |
| 02/20/2013 | CN102936492A Thermochemical yield increase solution composition applicable to low-permeability condensate well |
| 02/20/2013 | CN102936491A Weak-base surface active mixed preparation and preparation method of surface active agent thereof |
| 02/20/2013 | CN102936490A Preparation method of environment-friendly multi-scale zirconium gel dispersion plugging agent |
| 02/20/2013 | CN102936318A Multi-functional efficient oil scavenge polymer and preparation method of raw material graft modification starch thereof |
| 02/20/2013 | CN101955758B Method for preparing high-temperature resistant and salt resistant shear strength-improving agent for drilling fluid |
| 02/20/2013 | CN101735784B High-strength oil well plugging colloid and preparation method |
| 02/20/2013 | CN101717628B Low-density ceramsite propping agent and preparation method thereof |
| 02/19/2013 | US8377855 Methods and compositions for treating subterranean zones |
| 02/19/2013 | US8377854 Low volatile phosphorous gelling agent |
| 02/19/2013 | US8377853 Aqueous gels for well bore strengthening |
| 02/19/2013 | US8377347 Molded skin with electroluminescent elements |
| 02/19/2013 | CA2761048C Post cold heavy oil production with sand microbial enhanced oil recovery method |
| 02/19/2013 | CA2716450C Aqueous-based insulating fluids and related methods |
| 02/19/2013 | CA2636523C Acidic internal breaker system for viscoelastic surfactant fluids in brine |
| 02/19/2013 | CA2573680C Water flooding method |
| 02/19/2013 | CA2573540C Alkylxylene sulfonates for enhanced oil recovery processes |
| 02/17/2013 | CA2788414A1 Process for producing viscous mineral oil from underground deposits |
| 02/16/2013 | CA2786299A1 Composition and method for recovering heavy oil |
| 02/14/2013 | WO2013022884A1 Methods for cementing in a subterranean formation using a cement composition containing a set retarder of a polyester |
| 02/14/2013 | WO2013022648A2 Electrolytic composition for degrading polymeric filter cake |
| 02/14/2013 | WO2013022558A2 Methods for monitoring the formation and transport of an acidizing fluid using opticoanalytical devices |
| 02/14/2013 | WO2012149553A3 Fluids comprising chitosan crosslinked by titanate |
| 02/14/2013 | US20130041068 Methods for cementing in a subterranean formation using a cement composition containing a set retarder of a polyester |
| 02/14/2013 | US20130039872 Ester preparation with after-treatment |
| 02/14/2013 | US20130037267 System and Method for Improving Zonal Isolation in a Well |
| 02/14/2013 | US20130036713 Heat exchanger in a process and device for the preparation of an ester |
| 02/14/2013 | CA2843341A1 Methods for monitoring the formation and transport of a fracturing fluid using opticoanalytical devices |
| 02/14/2013 | CA2843322A1 Methods for monitoring a water source using opticoanalytical devices |
| 02/14/2013 | CA2842944A1 Methods for monitoring the formation and transport of a treatment fluid using opticoanalytical devices |
| 02/14/2013 | CA2842812A1 Methods for cementing in a subterranean formation using a cement composition containing a set retarder of a polyester |
| 02/14/2013 | CA2842703A1 Methods for monitoring the formation and transport of an acidizing fluid using opticoanalytical devices |
| 02/13/2013 | EP2557145A1 Surfactant compositions |
| 02/13/2013 | EP2556130A1 Scale inhibitor |
| 02/13/2013 | CN102933681A Solubilizing surfactants into supercritical carbon dioxide for enhanced oil recovery |
| 02/13/2013 | CN102933680A Suspensions for enhanced oil recovery |
| 02/13/2013 | CN102926728A Indigenous microorganism activation and exogenous microorganism intensified oil production method in offshore oilfield |
| 02/13/2013 | CN102926701A Continuous mixing type water plugging technique |
| 02/13/2013 | CN102925397A Mixed bacterial agent for reducing viscosity of thick oil, as well as preparation method and use thereof |
| 02/13/2013 | CN102925134A Method for preparing high-strength petroleum fracturing propping agent by use of high-iron low-grade bauxite |
| 02/13/2013 | CN102925133A Fracturing fluid for controlling extension of fracture and fracturing method |
| 02/13/2013 | CN102925132A High-temperature resistant steam chemical auxiliary agent for thermal oil recovery |
| 02/13/2013 | CN102925131A Method for preparing polymer injection fluid from clear water and polymer-containing sewage |
| 02/13/2013 | CN102925130A High-water content wax-containing crude oil flowing improver |
| 02/13/2013 | CN102925129A Hydrogenating hot gas chemical solution component and application thereof to viscous oil recovery |
| 02/13/2013 | CN102925128A Compound chemical blocking removing agent of oil field polymer injection well |
| 02/13/2013 | CN102925127A Oil well acidifying pretreating agent |
| 02/13/2013 | CN102925126A Saponin-containing composite type hydrate anti-agglomerant |
| 02/13/2013 | CN102925125A In situ microemulsions used as spacer fluids |
| 02/13/2013 | CN102925124A Temporary plugging composition of oil layer and application method |
| 02/13/2013 | CN102925123A Composite granular temperature-resistant salt-resistant chemical plugging agent |
| 02/13/2013 | CN102925122A Synthesis method of humic amide used for oil-based drilling fluid |
| 02/13/2013 | CN102925121A Multifunctional drilling fluid additive and preparation method thereof |
| 02/13/2013 | CN102924655A High-strength temperature resistant viscoelastic polymer for profile control |
| 02/13/2013 | CN102924654A High-strength temperature resistant viscoelastic fracturing fluid copolymer |
| 02/13/2013 | CN102924345A Preparation method and application of branched fluorine-containing cationic surfactant |
| 02/13/2013 | CN102924317A Preparation method and application of branched fluorine-containing acylamino quaternary ammonium salt type cationic surfactant |
| 02/13/2013 | CN102220126B Preparation method of oil stabilizing and water controlling proppant |
| 02/13/2013 | CN102174315B Scale removing and inhibiting agent for later-stage oil well with tertiary oil recovery |
| 02/13/2013 | CN102127408B Polymer-contained or gel-contained flushing fluid of oil-well produced fluid |
| 02/13/2013 | CN102093876B Hyposmosis thixotropic gel temporary plugging agent for acidifying oil layer of oil field and preparation and application thereof |
| 02/13/2013 | CN101974318B Low-temperature early strength agent for deepwater cementing |
| 02/13/2013 | CN101955765B Flushing fluid for oil well lined with oil tube |
| 02/13/2013 | CN101921582B Composite dirt blocking remover for oil-water well |
| 02/13/2013 | CN101768432B Corrosion-resistant propping agent |
| 02/13/2013 | CN101684405B Method for preparing gemini long-chain alkyl benzene sulfonate oil displacement agents |
| 02/13/2013 | CN101665682B Modified methyl glucoside treating agent for drill fluid |
| 02/13/2013 | CN101633840B Hydrophobic group grafted and modified guar gum fracturing fluid gel |
| 02/12/2013 | US8372788 Styrylphenol alkoxylate sulfate as a new surfactant composition for enhanced oil recovery applications |
| 02/12/2013 | US8372787 Electrically and/or magnetically active coated fibres for wellbore operations |
| 02/12/2013 | US8372786 Polyelectrolyte complexes for oil and gas applications |
| 02/12/2013 | US8371383 Method of fracturing subterranean formations with crosslinked fluid |
| 02/12/2013 | US8371381 Engineered fibers for well treatments |
| 02/07/2013 | WO2013019866A2 Use of environmentally friendly solvents to replace glycol-based solvents |
| 02/07/2013 | WO2013019704A1 Hydrocarbon fluid flow improver |
| 02/07/2013 | WO2013019308A1 A method of slickwater fracturing |
| 02/07/2013 | WO2013017838A1 Enhanced oil recovery |
| 02/07/2013 | US20130035271 Esters from solid polyols and unsaturated carboxylic acids |
| 02/07/2013 | US20130035266 Coalescence of emulsions |
| 02/07/2013 | US20130035265 Methods for Treating Fibers |
| 02/07/2013 | US20130035264 Constraining Pyrite Activity in Shale |
| 02/07/2013 | US20130035263 Agent and composition for oilfield applications |
| 02/07/2013 | US20130035262 Integrated Computational Element Analytical Methods for Microorganisms Treated with a Pulsed Light Source |
| 02/07/2013 | US20130032409 Methods of Preventing Emulsification of Crude Oil in Well Bore Treatment Fluids |
| 02/07/2013 | US20130032346 Method of fracturing using ultra lightweight proppant suspensions and gaseous streams |
| 02/07/2013 | CA2843884A1 Use of environmentally friendly solvents to replace glycol-based solvents |
| 02/07/2013 | CA2843214A1 Enhanced oil recovery |
| 02/07/2013 | CA2841418A1 A method of slickwater fracturing |
| 02/06/2013 | EP2554623A1 Constraining pyrite activity in shale |
| 02/06/2013 | EP2553045A1 Methods for strengthening fractures in subterannean formations |
| 02/06/2013 | EP2553044A2 Precipitation prevention in produced water containing hydrate inhibitors injected downhole |
| 02/06/2013 | EP2553043A1 Compositions and methods for cleaning a wellbore prior to cementing |
| 02/06/2013 | EP2553042A1 Well servicing fluid |
| 02/06/2013 | EP2553041A1 Reconditioning and reuse of wellbore servicing fluids |
| 02/06/2013 | EP2553040A1 Invert emulsion drilling fluids and methods of drilling boreholes |
| 02/06/2013 | CN102918014A Method of manufacture and use of large hydrophobe ether sulfate surfactants in enhanced oil recovery (EOR) applications |
| 02/06/2013 | CN102913183A Multifunctional pneumatic sealing device and matched sealing process thereof |