Aspects relating to compositions of drilling or well treatment fluids

Child Classifications

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• C09K 2208/02 Spotting, i.e. using additives for releasing a stuck drill
• C09K 2208/04 Hulls, shells or bark containing well drilling or treatment fluids
• C09K 2208/06 Structured surfactants, i.e. well drilling or treating fluids with a lamellar or spherulitic phase
• C09K 2208/08 Fiber-containing well treatment fluids
• C09K 2208/10 Nanoparticle-containing well treatment fluids
• C09K 2208/12 Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
• C09K 2208/14 Double emulsions, i.e. oil-in-water-in-oil emulsions or water-in-oil-in-water emulsions
• C09K 2208/18 Bridging agents, i.e. particles for temporarily filling the pores of a formation; Graded salts
• C09K 2208/20 Hydrogen sulfide elimination
• C09K 2208/22 Hydrates inhibition by using well treatment fluids containing inhibitors of hydrate formers
• C09K 2208/24 Bacteria or enzyme containing gel breakers
• C09K 2208/26 Gel breakers other than bacteria or enzymes
• C09K 2208/28 Friction or drag reducing additives
• C09K 2208/30 Viscoelastic surfactants [VES]
• C09K 2208/32 Anticorrosion additives
• C09K 2208/34 Lubricant additives