| 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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| 03/20/2013 | CN102977870A Plugging cement slurry and igneous rock fracture developing well plugging method |
| 03/20/2013 | CN102977869A Underground high-pressure hydraulic fracturing hole sealing material for coal mine and hole sealing technology |
| 03/20/2013 | CN102977868A Hole sealing material for gas and blast drilling underground coal mine |
| 03/20/2013 | CN102977867A Protective agent for hydrocarbon reservoir and preparation method thereof |
| 03/20/2013 | CN102977866A High-water-loss curing plugging agent for plugging fissures |
| 03/20/2013 | CN102977865A Novel composite plugging agent |
| 03/20/2013 | CN102977864A High-temperature coring sealing fluid and production process thereof |
| 03/20/2013 | CN102977863A Non-fluorescent anti-collapse fluid loss agent for drilling fluid and production process |
| 03/20/2013 | CN102977254A Thick oil nano viscosity reducer and preparation method thereof |
| 03/20/2013 | CN102976981A Preparation method and application of fluorine-containing quaternary ammonium salt type cationic surfactant |
| 03/20/2013 | CN102974268A Alkylbenzyl polyoxyethylene ether betaine surfactant and its preparation method and use |
| 03/20/2013 | CN102974263A Preparation method of long-chain fatty alcohol-polyoxyethyleneether sulfate and amphoteric surfactant as well as application thereof in tertiary oil recovery |
| 03/20/2013 | CN102358834B Solid descaling acid rod for oil well |
| 03/20/2013 | CN102141522B Method for evaluating pour point depressing paraffin inhibitor by photomicrography of dispersion of paraffin crystals |
| 03/20/2013 | CN102040981B Water-based barite plugging agent with thermosensitive property |
| 03/20/2013 | CN102010696B Water-based barite liquid plugging agent with thermal sensitivity |
| 03/20/2013 | CN101974322B Chelating acid of sandstone |
| 03/20/2013 | CN101892042B High temperature acidizing corrosion inhibitor and preparation method thereof |
| 03/20/2013 | CN101775275B Novel viscoelastic particle oil displacement agent and preparation method thereof |
| 03/19/2013 | US8401795 Methods of detecting, preventing, and remediating lost circulation |
| 03/19/2013 | CA2667156C Degradable material assisted diversion |
| 03/19/2013 | CA2611803C Well treatment fluid containing viscoelastic surfactant and viscosification activator |
| 03/19/2013 | CA2547223C Low volatile phosphorous gelling agent |
| 03/19/2013 | CA2378541C Using of stokes law cement slurries for improved well cementation |
| 03/16/2013 | CA2789917A1 Method of oil extraction |
| 03/14/2013 | WO2013036616A1 Wellbore servicing fluid having hydrophobically modified polymers |
| 03/14/2013 | WO2013036478A2 Disintegrative particles to release agglomeration agent for water shut-off downhole |
| 03/14/2013 | WO2013036350A1 Interpenetrating polymer network deformable proppant |
| 03/14/2013 | WO2013034846A1 Bifunctional anti-deposit and anti-corrosion additives |
| 03/14/2013 | WO2013006275A3 Down-hole placement of water-swellable polymers |
| 03/14/2013 | WO2012135756A3 Biomass-based oil field chemicals |
| 03/14/2013 | US20130065800 Coated and cured proppants |
| 03/14/2013 | US20130065799 Additives For Inhibition Of Gas Hydrate Formation |
| 03/14/2013 | US20130065798 Water-based drilling fluid composition having a multifunctional mud additive for reducing fluid loss during drilling |
| 03/14/2013 | US20130062053 Alkaline microbial enhanced oil recovery |
| 03/14/2013 | CA2847733A1 Wellbore servicing fluid having hydrophobically modified polymers |
| 03/14/2013 | CA2845011A1 Interpenetrating polymer network deformable proppant |
| 03/13/2013 | EP2568029A1 Method for transporting crude oil from subterranean crude oil storage areas |
| 03/13/2013 | EP2566931A1 Oil well drilling fluids, oil well cement composition, and slurry of weighting material comprising ilmenite |
| 03/13/2013 | CN102966341A Method for increasing stratum layer oil recovery factor by utilizing wastewater |
| 03/13/2013 | CN102965094A Dendronized polymer/SiO2 nano oil-displacing agent and method for preparing same |
| 03/13/2013 | CN102965093A Composite crosslinking deep profile control agent for oil reservoir deep profile control and preparation method thereof |
| 03/13/2013 | CN102965092A Salt-resistant type low-temperature foam lifting drainage chemical additive, and preparation method and application thereof |
| 03/13/2013 | CN102965091A Pressure reducing and injection increasing agent used for ultralow permeability oil field and preparation method thereof |
| 03/13/2013 | CN102965090A Corrosion inhibitor composition |
| 03/13/2013 | CN102965089A Gel water shutoff agent |
| 03/13/2013 | CN102965088A Environment-friendly crosslinking and gelling retarding profile control agent and preparation method thereof |
| 03/13/2013 | CN102965087A High-temperature-resistant drilling fluid |
| 03/13/2013 | CN102965086A Preparation method of bentonite for drilling mud |
| 03/13/2013 | CN102965085A Gelatine drilling fluid additive and preparation method thereof |
| 03/13/2013 | CN102965084A Impermeable oil layer protective agent |
| 03/13/2013 | CN102965083A Compound resin high-temperature-resistant anti-collapse water-loss reducing agent for drilling fluid |
| 03/13/2013 | CN102964306A Preparation method of imidazoline corrosion inhibitor |
| 03/13/2013 | CN102960343A High-concentration preservative bactericide |
| 03/13/2013 | CN102676148B High-density low-friction fracturing fluid |
| 03/13/2013 | CN102604621B Novel high-efficiency composite viscosity reducer for super heavy oil |
| 03/13/2013 | CN102585797B Diverting acid for carrying out acidification and transformation on high-temperature oil and gas well with long well segment |
| 03/13/2013 | CN102504793B Core-shell polymer microsphere profiling/flooding agent and preparation method thereof |
| 03/13/2013 | CN102504792B Oil displacement agent for ultrahigh-temperature, high-salt, high-calcium, high-magnesium and homogeneous oil reservoirs |
| 03/13/2013 | CN102504775B Large temperature difference cement slurry for cementing of deep well long isolation section and preparation method thereof |
| 03/13/2013 | CN102344789B Hydrogen sulfide resistant corrosion inhibitor for oil and gas well pipeline |
| 03/13/2013 | CN102277152B Acid-triggered thickening agent and preparation method thereof |
| 03/13/2013 | CN102268247B Fibrous water-soluble shielding temporary plugging agent |
| 03/13/2013 | CN101864287B Composite retarded acid |
| 03/13/2013 | CN101851496B Novel high-efficient sand-carrying acid fracturing agent |
| 03/13/2013 | CN101851493B Preparation of water-soluble salt-resistant dispersing drag reducer for heavy oil exploitation |
| 03/13/2013 | CN101831285B Foaming agent resisting high temperature, high salt and condensate oil for fracturing and preparation method thereof |
| 03/13/2013 | CN101821355B Installation for tertiary oil recovery using water-soluble polymers, method implementing same |
| 03/13/2013 | CN101760188B Formula of DSS-1 corrosion inhibiter and processing technique |
| 03/13/2013 | CN101747886B Fracturing fluid stock solution, full-filling preposition-free sand adding fracturing method and fracturing fluid cross-linking solution thereof |
| 03/13/2013 | CN101440275B Oxidative thinner for heavy oil exploitation via steam injection and preparation thereof |
| 03/13/2013 | CN101432239B Oil-, hot water- and heat-resistant binders, process for preparing them and their use |
| 03/13/2013 | CN101124291B Viscoelastic surfactant rheology modification |
| 03/13/2013 | CA2752655A1 Pump with wear sleeve |
| 03/12/2013 | US8394743 A water-based, shear-thinning process fluid comprising bentonite, alumnium hydroxide particles not exceeding a diameter of 2 microns, and sodium or potassium chloride, and forms a gel network at 20 degrees C |
| 03/12/2013 | US8394180 Systems and methods for absorbing gases into a liquid |
| 03/12/2013 | US8393411 Method for controlling loss of drilling fluid |
| 03/12/2013 | US8393390 Polymer hydration method |
| 03/12/2013 | CA2799112A1 Multifunctional boronic acid crosslinking agents and associated methods |
| 03/12/2013 | CA2670893C Enhanced oil-based foam drilling fluid compositions and method for making and using same |
| 03/12/2013 | CA2662933C In situ fluid formation for cleaning oil-or synthetic-oil-based mud |
| 03/07/2013 | WO2013033531A1 Downhole sealing system using cement activated material and method of downhole sealing |
| 03/07/2013 | WO2013033399A1 Fluid loss control in viscoelastic surfactant fracturing fluids using water soluble polymers |
| 03/07/2013 | WO2013033086A2 Method and composition to reduce gel viscosity in the intermediate temperature range |
| 03/07/2013 | WO2013032669A1 Carbon dioxide-resistant portland based cement composition |
| 03/07/2013 | WO2013032579A1 Liquid crude hydrocarbon composition |
| 03/07/2013 | WO2013032482A1 Systems, materials, and methods for recovering material from bedrock using supercritical argon compositions |
| 03/07/2013 | WO2013032444A1 Methods and systems for integrated control of subterrranean operations |
| 03/07/2013 | WO2013030140A1 Composition and method for enhanced hydrocarbon recovery |
| 03/07/2013 | WO2013029864A1 "alternative ligand formulations for cellulose products" |
| 03/07/2013 | US20130056215 Disintegrative Particles to Release Agglomeration Agent for Water Shut-Off Downhole |
| 03/07/2013 | US20130056204 Dual Function Proppants |
| 03/07/2013 | US20130056199 Lewis acid as gelation retarder for crosslinkable polymer compositions |
| 03/07/2013 | CA2846600A1 Carbon dioxide-resistant portland based cement composition |
| 03/07/2013 | CA2846516A1 Liquid crude hydrocarbon composition |
| 03/07/2013 | CA2845662A1 Composition and method for enhanced hydrocarbon recovery |
| 03/07/2013 | CA2845623A1 Methods and systems for integrated control of subterranean operations |
| 03/07/2013 | CA2845366A1 Downhole sealing system using cement activated material and method of downhole sealing |
| 03/07/2013 | CA2845163A1 Method and composition to reduce gel viscosity in the intermediate temperature range |
| 03/07/2013 | CA2843029A1 Alternative ligand formulations for cellulose products |