Abstract: Method for inhibiting the swelling and/or the dispersion of shales during the treatment of subterranean shale formations comprising the steps of: a) providing a subterranean treatment fluid comprising from 0.001 to 10% by weight of a polyester obtained by reacting a dicarboxylic acid having from 2 to 8 carbon atoms with a specific alkoxylated diamine; b) introducing said treatment fluid into a wellbore at a pressure sufficient to treat the subterranean shale formations.

Abstract: Non-aqueous suspension composition of water-soluble polymers and method for treating a subterranean formation comprising the step of placing an aqueous fluid containing the suspension composition into the subterranean formation.

Abstract: Non-aqueous suspension of water-soluble polymers, method for their preparation and method for reducing spray drift during spray application of a pesticidal or crop protection tank formulation by use of the non-aqueous suspension.

Abstract: The present invention relates to a method to inhibit gas hydrate formation in the field of crude oil and natural gas extraction, transportation and processing.

Abstract: The present invention relates to a method to inhibit gas hydrate formation in the field of crude oil and natural gas extraction, transportation and processing.

Abstract: Cleaning composition for use in cleaning wellbore walls, tubing or casing comprising: (i) from about 5% to 100% by weight of a mixture M consisting of from 10% to 50% by weight of acetophenone, from 5% to 30% by weight of butyl glycol and from 40% to 80% by weight of a surfactant, and (ii) from 0% to 95% by weight of water, in which (i)+(ii) sum up for at least 85% by weight of the cleaning composition; and process for cleaning a wellbore wall.

Abstract: Non-aqueous suspension composition of water-soluble polymers and method for treating a subterranean formation comprising the step of placing an aqueous fluid containing the suspension composition into the subterranean formation.

Abstract: The present invention relates to a method to inhibit gas hydrate formation in the field of crude oil and natural gas extraction, transportation and processing.

Abstract: The present invention relates to a method to inhibit gas hydrate formation in the field of crude oil and natural gas extraction, transportation and processing.

Abstract: Cleaning composition for use in cleaning wellbore walls, tubing or casing comprising: (i) from about 5% to 100% by weight of a mixture M consisting of from 10% to 50% by weight of acetophenone, from 5% to 30% by weight of butyl glycol and from 40% to 80% by weight of a surfactant, and (ii) from 0% to 95% by weight of water, in which (i)+(ii) sum up for at least 85% by weight of the cleaning composition; and process for cleaning a wellbore wall.

Abstract: Method of treating a portion of a subterranean formation comprising the injection of an aqueous fluid containing a modified polysaccharide bearing ethylenically unsaturated double bonds and an initiator of radical polymerization.

Abstract: Method of treating a portion of a subterranean formation comprising the injection of an aqueous fluid containing a modified polysaccharide bearing ethylenically unsaturated double bonds and an initiator of radical polymerization.

Abstract: The present disclosure relates to a method of treating a portion of a subterranean formation comprising the use of an aqueous fracturing fluid containing a fast dissolving and easily dispersible unpunfied polygalactomannan ether.

Abstract: The formation of hydrocarbon hydrates can be inhibited or mitigated by contacting a a mixture comprising water and hydrate-forming guest molecules under gas hydrate forming conditions with a quaternary ammonium hydroxide QOH or a quaternary ammonium compound QA, in which A is not a halogen atom. The QOH or QA may be prepared reacting a quaternary ammonium halide QX with a metal hydroxide M(OH)x, or with a metal salt MA, in an alcohol solvent to form a quaternary ammonium hydroxide QOH, or a quaternary ammonium compound of formula QA, and metal halide MX. Optionally, the quaternary ammonium hydroxide QOH may be reacted with an organic or inorganic acid AH which is different from a hydrogen halide to form the quaternary ammonium compound QA. The metal halide MX may be removed by phase separation after addition of water or of a water/solvent mixture, or by filtration.

Abstract: The present disclosure relates to a method of treating a portion of a subterranean formation comprising the use of an aqueous fracturing fluid containing a fast dissolving and easily dispersible unpunfied polygalactomannan ether.