| 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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| 03/19/2008 | CN100375774C Micelle agent in use for acidification of oil field |
| 03/19/2008 | CN100375773C Water plugging agent for water injection well preparing from discarded oil-containing sludge |
| 03/18/2008 | US7345013 Useful for making gelled fluids by crosslinking hydratable polymers is an aqueous solution of zirconium complexed with carbonate and bicarbonate as the only multidentate ligands complexed with zirconium, hydraulic fracturing |
| 03/18/2008 | US7345012 Foamed viscoelastic surfactants |
| 03/18/2008 | US7345011 Via injecting consolidating furan-based resin |
| 03/18/2008 | US7345010 Compositions for drilling fluids useful to provide flat temperature rheology to such fluids over a wide temperature range and drilling fluids containing such compositions |
| 03/18/2008 | US7343986 comprising a lubricating agent of hydrocarbyl polyether phosphate; modified polyoxyethylene glycol or ethylene oxide-propylene oxide copolymers; oil and/or gas wells; lubricant compatibility and performance matching with a drilling fluid which has a brine phase |
| 03/18/2008 | US7343978 Scale dissolver fluid |
| 03/18/2008 | US7343974 Method and apparatus for performing chemical treatments of exposed geological formations |
| 03/18/2008 | US7343972 System stabilizers and performance enhancers for aqueous fluids gelled with viscoelastic surfactants |
| 03/18/2008 | CA2457395C Topical defoamer and demulsifier |
| 03/14/2008 | CA2602883A1 Methods of forming and using an in situ heavy hydrocarbon emulsion |
| 03/13/2008 | WO2008030764A2 Method for controlled placement of additives in oil and gas production |
| 03/13/2008 | WO2008029131A1 Hydrocarbon recovery |
| 03/13/2008 | WO2008029124A1 Hydrocarbon recovery process |
| 03/13/2008 | WO2008029081A1 Method of improving recovery from hydrocarbon reservoirs |
| 03/13/2008 | WO2008016662A3 Biocide for well stimulation and treatment fluids |
| 03/13/2008 | WO2008014202A3 Friction loss reduction in viscoelastic surfactant fracturing fluids using low moelvular weight water- soluble polymers |
| 03/13/2008 | WO2008001049A8 Wellbore fluid |
| 03/13/2008 | WO2007146345A3 Polyvinyl alcohol fluid loss additive with improved rheological properties |
| 03/13/2008 | US20080064614 Friction Reduction Fluids |
| 03/13/2008 | US20080064613 High density fluids; suspension stability, low viscosity; minimizing loss |
| 03/13/2008 | US20080064612 Invert emulsion drilling fluid systems comprising an emulsified aqueous phase comprising dispersed integral latex particles |
| 03/13/2008 | US20080064611 Ion pair amphiphiles as hydrate inhibitors |
| 03/13/2008 | US20080064064 Mannanases |
| 03/13/2008 | US20080060812 Injectinga viscoelastic surfactant (VES) gelling agent; and a fluid loss control agent of alkali earth metal oxides, alkali earth metal hydroxides, transition metal oxides, transition metal hydroxides through a wellbore to the subterranean formation |
| 03/13/2008 | CA2662295A1 Hydrocarbon recovery process |
| 03/12/2008 | EP1896549A1 Clean up additive for viscoelastic surfactant based fluids |
| 03/12/2008 | EP1423490A4 Biodegradable surfactant for invert emulsion drilling fluid |
| 03/12/2008 | CN101139920A Dibasic composite horizontal well bottom water plugging technique |
| 03/12/2008 | CN101139718A Multiple-effect solid inhibiting anti-scale rod |
| 03/12/2008 | CN101139520A Method for preparing alkanolamide and its application in teritary oil extraction |
| 03/11/2008 | US7341985 2-Hydroxy-3-alkoxypropyl sulfides, sulfones, and sulfoxides: new surface active agents |
| 03/11/2008 | US7341980 Injecting fluid viscosifled with a betaine zwitterionic viscoelastic surfactant and a rheology enhancer into oil well, viscosity recovery time at relatively low shear conditions following a reduced viscosity from high shear |
| 03/11/2008 | US7341979 Gelatin capsules containing oil field chemicals, preferably weighted with a heavy metal compound, are made more stable under certain conditions by the incorporation of a strong chelating agent. The microcapsules can provide an extended |
| 03/11/2008 | US7341617 Corrosion and gas hydrate inhibitors having improved water solubility and increased biodegradability |
| 03/11/2008 | US7341117 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 03/11/2008 | US7341107 Treating a subterranean formation selected from the group consisting of matrix acidizing, acid fracturing or diverting by contacting with formulation of hydrochloric acid, a cationic surfactant (quaternary amine), and a break-enabling salt (NH4Cl) |
| 03/11/2008 | US7341104 Methods of using substantially hydrated cement particulates in subterranean applications |
| 03/11/2008 | US7341103 Compositions and methods for treating subterranean formations with liquefied petroleum gas |
| 03/11/2008 | CA2231734C Improved oil-based drilling fluid |
| 03/06/2008 | WO2008028074A2 Low bulk density proppant and methods for producing the same |
| 03/06/2008 | WO2007132212A3 Servicing a wellbore with an aqueous based fluid comprising a clay inhibitor |
| 03/06/2008 | US20080058229 Controlled release of functional chemicals to target area |
| 03/06/2008 | US20080058228 Low bulk density proppant and methods for producing the same |
| 03/06/2008 | US20080058226 Method for Controlled Placement of Additives in Oil and Gas Production |
| 03/06/2008 | CA2661799A1 Low bulk density proppant and methods for producing the same |
| 03/05/2008 | EP1893717A1 Surfactant mixtures for tertiary oil recovery |
| 03/05/2008 | CN101135237A Method for preparing down-hole gel valve and construction method thereof |
| 03/05/2008 | CN101134893A Preparation method of catalytic thinner for viscous crude water thermo-cracking |
| 03/05/2008 | CN101134892A Deepwater well cementing mortar architecture |
| 03/04/2008 | US7338925 Chabazite or clinoptilolite with a particle size of 1.0 to 10 microns, activator (calcium hydroxide), and organic acid or salt (acetic, citric, tartaric, or gluconic acids); wellbore treating fluids |
| 03/04/2008 | US7338924 Oil-in-water-in-oil emulsion |
| 03/04/2008 | US7338923 Settable drilling fluids comprising cement kiln dust |
| 03/04/2008 | US7338922 Water-based, shear-thinning process fluid comprises bentonite, aluminium hydroxide particles, and salt; for use in drilling a hydrocarbon well |
| 03/04/2008 | US7338608 Solid-liquid separation of oil-based muds |
| 03/01/2008 | CA2600053A1 Rod-shaped proppants and anti-flowback additives, methods of manufacturing, and methods of use |
| 02/28/2008 | WO2008024865A2 Compositions and methods for improving the productivity of hydrocarbon producing wells |
| 02/28/2008 | WO2008023989A1 Additives for inhibiting gas hydrate formation |
| 02/28/2008 | WO2008023979A1 Controlled formation of hydrates |
| 02/28/2008 | WO2007146067A3 Drilling fluid additive and base fluid compositions of matter containing b100 biodiesels; and applications of such compositions of matter in well drilling, completion, and workover operations |
| 02/28/2008 | WO2007141199A3 Method of protecting metallic surfaces from corrosion by fluid media, using copolymers comprising amino groups and ethylene |
| 02/28/2008 | WO2007116366A3 Method for treating a subterranean formation |
| 02/28/2008 | US20080051302 Oxides or hydroxides of alkali metals, alkaline earth methals, transition metals (Ti, Zn) or post-transitional metals (Al); reduced or no tendency to precipitate, particularly at elevated temperatures; hydraulic fracturing |
| 02/28/2008 | US20080051300 Compositions and method for improving the productivity of hydrocarbon producing wells |
| 02/28/2008 | US20080047709 Method for Controlling Water Influx Into Wellbores by Blocking High-Permeability Channels |
| 02/27/2008 | EP1892458A1 Controlled formation of hydrates |
| 02/27/2008 | EP1892278A1 Drilling fluids comprising sized graphite particles |
| 02/27/2008 | EP1891179A1 Drilling fluid comprising a polymer and use of the polymer in a drilling fluid |
| 02/27/2008 | EP1169405B1 Quaternary nitrogen containing amphoteric water soluble polymers and their use in drilling fluids |
| 02/27/2008 | CN101133231A Degradable polymers for wellbore fluids and processes |
| 02/27/2008 | CN101133135A Use of water-soluble alkane sulfonic acids for increasing the permeability of underground petroliferous and/or gas-bearing carbonate rock formations and for dissolving carbonate contaminants and/or co |
| 02/27/2008 | CN101131087A Biological oil production method for extra-heavy crude oil |
| 02/27/2008 | CN101131086A Oil production method using biosurfactant |
| 02/27/2008 | CN101131085A Oil production method using indigenous microorganism |
| 02/27/2008 | CN101131084A Method for promoting yield increase of oil well |
| 02/27/2008 | CN101131083A Air-auxiliary microbial oil production method |
| 02/27/2008 | CN101131082A Underground microbial oil production method |
| 02/27/2008 | CN101130753A Indigenous microorganism nutrient solution |
| 02/27/2008 | CN101130684A Complex microorganism preparations for oil production |
| 02/27/2008 | CN100371415C Water dispersion composite sand-fixing agent formula |
| 02/26/2008 | CA2350545C Cementation product and use for cementing oil wells or the like |
| 02/21/2008 | WO2008020388A2 Friction reduction fluids |
| 02/21/2008 | WO2008020220A1 Well treatment |
| 02/21/2008 | WO2008020212A1 Subterranean treatment fluids, friction reducing copolymers, and associated methods |
| 02/21/2008 | WO2008020188A2 Methods of preparing settable fluids comprising particle-size distribution-adjusting agents, and associated methods |
| 02/21/2008 | WO2008019987A1 Water-soluble and biodegradable copolymers on a polyamide basis and use thereof |
| 02/21/2008 | WO2008003927A3 Storable nonaqueous cement slurries and methods of using same |
| 02/21/2008 | WO2008001066A3 Cement compositions for low temperature applications |
| 02/21/2008 | WO2007087099A3 Method of removing scale and acidic composition used thereof |
| 02/21/2008 | US20080045423 Compositions and Methods for Plugging and Sealing a Subterranean Formation |
| 02/21/2008 | US20080045422 Aqueous treatment fluid of acrylamide and 2-(2-ethoxy-ethoxy)-ethyl acrylate for introduction into a subterranean formation; reduced flocculation tendencies |
| 02/21/2008 | US20080045421 Adaptive Cementitious Composites for Well Completions |
| 02/21/2008 | US20080045420 Zwitterionic Polymers Comprising Betaine-Type Units And Use Of Zwitterionic Polymers In Drilling Fluids |
| 02/21/2008 | CA2776519A1 Subterranean treatment fluids, friction reducing copolymers, and associated methods |
| 02/21/2008 | CA2658791A1 Core annular flow of heavy crude oils in transportation pipelines and production wellbores |
| 02/20/2008 | EP1888876A1 Biogenic fuel gas generation in geologic hydrocarbon deposits |
| 02/20/2008 | CN101126018A Low-temperature hardening scurry-proof cement slurry for well cementing |
| 02/20/2008 | CN101126017A Insulating liquid for injecting cement in oil well |
| 02/19/2008 | US7332460 alkylxylene moiety in the alkylxylene sulfonate contains a high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and attachment of the alkyl group to the xylene ring at positions higher than the 2-position on the alkyl carbon chain; for enhancing the recovery of oil from a subterranean reservoir |