| 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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| 01/09/2013 | CN102863946A High-temperature-resistant lubricating agent of drilling fluid |
| 01/09/2013 | CN102863593A Sludge cake curing agent, and preparation and application method thereof |
| 01/09/2013 | CN102863584A Preparation method for macromolecule emulsion coating agent for drilling fluid |
| 01/09/2013 | CN102863583A Preparation method of ultra-high molecular weight temperature and salt resistant polyacrylamide |
| 01/09/2013 | CN102268123B Method for preparing super absorbent material for plugging during oil field drilling |
| 01/09/2013 | CN102241801B Acrylic acid(AA)/sodium 2-acrylamide-2-methylpro panesulfonic acid(AMPS-Na)/diisocyanate-modified allyl cyclodextrin (MACD) copolymer |
| 01/09/2013 | CN102220124B Oil displacement compound for tertiary oil recovery and preparation method thereof |
| 01/09/2013 | CN102220123B Oil displacement method for tertiary oil recovery |
| 01/09/2013 | CN102219896B N,N-difattyacyl diamino diacetoxyl dipolyoxyethylene ether dicarboxylate and preparation method thereof |
| 01/09/2013 | CN102127403B High efficient plugging agent for well drilling |
| 01/09/2013 | CN102070909B 阳离子改性沥青及其制备方法 Cation-modified asphalt and its preparation method |
| 01/09/2013 | CN101955767B Gemini surfactant for tertiary oil recovery chemical oil-displacing agent and preparation method thereof |
| 01/09/2013 | CN101921579B Low-fluorescence sticking reliever and preparation method thereof |
| 01/09/2013 | CN101864285B Deepwater cementing low-temperature early strength agent |
| 01/09/2013 | CN101845295B Drilling fluid tackifier favorable for protecting oil-gas layers |
| 01/09/2013 | CN101805596B Non-floating bead low-density oil-well cement |
| 01/09/2013 | CN101443436B Process for the preparation of water-in-oil and oil-in-water nanoemulsions |
| 01/08/2013 | US8349772 Method of secondary oil recovery using an aminoalkylene phosphonic acid and an amine neutralizing agent |
| 01/08/2013 | US8349771 Method for improving the clean-up of emulsified acid fluid systems |
| 01/08/2013 | CA2702936C Nano-sized particles for formation fines fixation |
| 01/08/2013 | CA2602706C Drilling fluid containing hydrophobin |
| 01/08/2013 | CA2577874C Selective fracture face dissolution |
| 01/08/2013 | CA2531963C A process for enhanced recovery of crude oil from oil wells using novel microbial consortium |
| 01/08/2013 | CA2440102C Elastomeric admixtures for improving cement elasticity |
| 01/07/2013 | WO2013009187A1 Oil well drilling fluids, oil well cement composition, and slurry of weighting material comprising ilmenite |
| 01/07/2013 | CA2789289A1 Oil well drilling fluids, oil well cement composition and slurry of weighting material |
| 01/03/2013 | WO2013003192A1 Hydrocarbon-based drilling fluids containing cesium phosphate |
| 01/03/2013 | WO2013003132A1 Self-diverting emulsified acid systems for high temperature well treatments and their use |
| 01/03/2013 | WO2013002901A1 Cement set retarder based on a borate ester complex and method using the same |
| 01/03/2013 | WO2013002755A1 Breaker fluids for wellbore fluids and methods of use |
| 01/03/2013 | WO2013000571A1 Surfactant compositions |
| 01/03/2013 | WO2012154521A3 Novel quaternary foamers for downhole injection |
| 01/03/2013 | WO2012135106A3 Ceramic particle and process for making the same |
| 01/03/2013 | WO2012129302A3 Graphene-containing fluids for oil and gas exploration and production |
| 01/03/2013 | US20130005626 Surfactant compositions |
| 01/03/2013 | US20130005617 Self-diverting emulsified acid systems for high temperature well treatments and their use |
| 01/03/2013 | US20130005616 Enhanced oil recovery process using water soluble polymers having improved shear resistance |
| 01/03/2013 | US20130005615 Optimized enhanced oil recovery method with polymer preservation through sacrificial compound addition |
| 01/03/2013 | US20130000916 Recyclable cleanout fluids |
| 01/03/2013 | US20130000915 Compositions and processes for fracturing subterranean formations |
| 01/03/2013 | US20130000912 Altering the interface of hydrocarbon-coated surfaces |
| 01/03/2013 | US20130000911 Gellable Treatment Fluids Comprising Quaternary Ammonium Salt Gel-Time Modifiers and Methods for Use Thereof |
| 01/03/2013 | US20130000905 Gellable Treatment Fluids Comprising Amino Group Gel-Time Modifiers and Methods for Use Thereof |
| 01/03/2013 | US20130000901 Methods for Stimulating Oil or Gas Production Using a Viscosified Aqueous Fluid with a Chelating Agent to Remove Calcium Carbonate and Similar Materials from the Matrix of a Formation or a Proppant Pack |
| 01/03/2013 | US20130000900 Down-hole placement of water-swellable polymers |
| 01/03/2013 | CA2840201A1 Hydrocarbon-based drilling fluids containing cesium phosphate |
| 01/03/2013 | CA2839346A1 Cement set retarder based on a borate ester complex and method using the same |
| 01/03/2013 | CA2838905A1 Surfactant compositions |
| 01/02/2013 | EP2540794A1 Improved process for assisted oil recovery with preservation of polymers by adding sacrificial compounds |
| 01/02/2013 | EP2540793A1 Gellable treatment fluids comprising quaternary ammonium salt gel-time modifiers and methods for use thereof |
| 01/02/2013 | EP2540792A1 Gellable treatment fluids comprising amino group gel-time modifiers and methods for use thereof |
| 01/02/2013 | EP2539418A1 Epoxy acid based biodegradable set retarder for a cement composition |
| 01/02/2013 | EP2538781A2 Process for the co-encapsulation of biocidally active compounds in clay minerals functionalized by nitrogen compounds |
| 01/02/2013 | CN102859111A High strength dissolvable structures for use in a subterranean well |
| 01/02/2013 | CN102858908A Use of polycarboxylate surfactant mixtures for microemulsion flooding |
| 01/02/2013 | CN102858907A Surfactant systems for enhanced oil recovery |
| 01/02/2013 | CN102858906A Scale inhibitor |
| 01/02/2013 | CN102858905A Well servicing fluid |
| 01/02/2013 | CN102858904A Treatment fluids comprising entangled equilibrium polymer networks |
| 01/02/2013 | CN102852499A Method for directionally regulating and controlling indigenous microbial flooding of oil reservoir |
| 01/02/2013 | CN102851235A Ureibacillus sp. and bacterial agents and application thereof |
| 01/02/2013 | CN102851019A Preparation method of cationic viscoelastic surfactant fracturing fluid |
| 01/02/2013 | CN102851018A Recyclable surfactant fracturing fluid and reutilization method |
| 01/02/2013 | CN102851017A Viscous-elastic clean fracturing fluid containing erucic acid betaines |
| 01/02/2013 | CN102851016A Carboxy-lycine amphoteric surfactant for oil displacement and preparation method thereof |
| 01/02/2013 | CN102851015A Foam drainage agent with high temperature resistance, high condensate oil resistance and hypersalinity resistance and preparation method |
| 01/02/2013 | CN102851014A Oil-based shaft stabilizing fluid for gas-liquid conversion and preparation method thereof |
| 01/02/2013 | CN102851013A Composite super gel plugging agent for drilling |
| 01/02/2013 | CN102851012A Water swellable rubber in high-concentration salt solution and preparation method thereof |
| 01/02/2013 | CN102851011A Polymer drilling fluid with high temperature resistance |
| 01/02/2013 | CN102851010A Water-based high-density rapid well killing liquid reserve |
| 01/02/2013 | CN102851009A Organic salt high-density drilling fluid |
| 01/02/2013 | CN102851008A Carbonate drilling fluid |
| 01/02/2013 | CN102851007A Drilling fluid and method |
| 01/02/2013 | CN102851006A Bio-oil lubricant for drilling wells and preparation method of bio-oil lubricant |
| 01/02/2013 | CN102851005A Guanidine mud bactericidal agent |
| 01/02/2013 | CN102851004A Biodegradable lubricant for drilling fluid and preparation method thereof |
| 01/02/2013 | CN102850554A Vegetable fiber surfactant and compound surfactant |
| 01/02/2013 | CN102850488A Low-density double expansion gel particle |
| 01/02/2013 | CN102850487A Water-soluble hydrophobic associated polymer oil displacement agent and synthesis method thereof |
| 01/02/2013 | CN102845457A Antisepsis bactericide for oil field |
| 01/02/2013 | CN102242076B Microorganism for oil displacement and composite type oil displacement agent containing same |
| 01/02/2013 | CN102206317B Dihydroxy naphthalene modified phenolic resin for sand prevention and preparation method thereof |
| 01/02/2013 | CN102191026B Water injection well on-line profile control agent prepared from oil field sewage treatment waste residues |
| 01/02/2013 | CN102154000B Transition metal sulfonate complex thick oil water thermo-catalysis viscosity reducer and preparation method thereof |
| 01/02/2013 | CN102051161B Thick oil huff and puff deep channel blocking system and injection method thereof |
| 01/02/2013 | CN102050916B Tertiary aliphatic amine group-contained macromolecule as well as preparation method and application thereof |
| 01/02/2013 | CN102020981B Temperature-resistant, salt-resistant and low-tension foam flooding agent and preparation method thereof |
| 01/02/2013 | CN102002356B Petroleum propping agent with ultra-low density and high strength |
| 01/02/2013 | CN101967369B Comb-like polymer fluid loss additive for drilling fluid and preparation method thereof |
| 01/02/2013 | CN101962530B Oil and gas field region well-prospecting and well-cementing cement secondary slurry process |
| 01/02/2013 | CN101935521B Application of alcohol amide nonionic surfactant for alkali-free flooding |
| 01/02/2013 | CN101747878B Atomization foam drilling fluid |
| 01/02/2013 | CN101705083B Formulation of surfactant oil displacement system for anionic and nonionic oil displacement |
| 01/02/2013 | CN101701149B Low-density ceramsite propping agent |
| 01/02/2013 | CN101535443B Hydrocarbon recovery process |
| 01/02/2013 | CN101124384B Additives for hydrate inhibition in fluids gelled with viscoelastic surfactants |
| 01/02/2013 | CN101056959B Viscoelastic surfactant fluids having enhanced shear recovery, rheology and stability performance |
| 01/01/2013 | US8343897 Scale inhibiting well treatment |
| 01/01/2013 | US8343896 Sealant compositions comprising diutan and associated methods |