This document relates to methods for improving the tensile and elastic properties of cement of an oil well using cement compositions that contain sliding-ring polymer additives. The cement compositions containing the sliding-ring polymer additives exhibit increased stiffness while having a minimum impact on compressive strength, as compared to the same cement without the sliding-ring polymer additive.

Spray dried homogeneous mixtures of a high molecular mass flocculating agent, a base polymer dispersion, and a protective colloid are useful for homogenously stabilizing mixtures such as dust, sand, and/or soil and produce a stabilized composition of high strength.

Spray dried homogeneous mixtures of a high molecular mass flocculating agent, a base polymer dispersion, and a protective colloid are useful for homogenously stabilizing mixtures such as dust, sand, and/or soil and produce a stabilized composition of high strength.

A pH sensitive water-absorbent resin suitable for oil well cement slurry and an application thereof are provided. The pH sensitive water-absorbent resin includes distilled water, a monomer, a mixed auxiliary agent, a crosslinking agent and an initiator, the amount of the monomer is 30% to 100% of the mass of the distilled water, the amount of the mixed auxiliary agent is 16% to 67% of the mass of the monomer, the amount of the crosslinking agent is 0.2% to 1% of the mass of the monomer, and the amount of the initiator is 0.4 to 1% of the mass of the monomer.

A pH sensitive water-absorbent resin suitable for oil well cement slurry and an application thereof are provided. The pH sensitive water-absorbent resin includes distilled water, a monomer, a mixed auxiliary agent, a crosslinking agent and an initiator, the amount of the monomer is 30% to 100% of the mass of the distilled water, the amount of the mixed auxiliary agent is 16% to 67% of the mass of the monomer, the amount of the crosslinking agent is 0.2% to 1% of the mass of the monomer, and the amount of the initiator is 0.4 to 1% of the mass of the monomer.

The invention concerns dry particulate compositions for forming a geopolymer, comprising an aluminosilicate containing mineral, a polymeric additive, an alkali metal silicate, and an alkali metal hydroxide. The invention concerns processes of making geopolymers, the geopolymers, as well as the use of the dry particulate compositions in the formation of geopolymers.

The invention concerns dry particulate compositions for forming a geopolymer, comprising an aluminosilicate containing mineral, a polymeric additive, an alkali metal silicate, and an alkali metal hydroxide. The invention concerns processes of making geopolymers, the geopolymers, as well as the use of the dry particulate compositions in the formation of geopolymers.

Suspensions of elastomer particles for cement compositions and associated methods of cementing. An example method includes providing a suspension of elastomer particles. The suspension of elastomer particles includes elastomer particles, an aqueous fluid, a viscosifier, a surfactant, and a clay-based stabilizer. The suspension may be combined with a cement slurry to form a cement composition. The cement slurry includes a cement and a base fluid. The cement composition may be introduced into a wellbore penetrating a subterranean formation. The cement composition may be allowed to set in the wellbore.

Suspensions of elastomer particles for cement compositions and associated methods of cementing. An example method includes providing a suspension of elastomer particles. The suspension of elastomer particles includes elastomer particles, an aqueous fluid, a viscosifier, a surfactant, and a clay-based stabilizer. The suspension may be combined with a cement slurry to form a cement composition. The cement slurry includes a cement and a base fluid. The cement composition may be introduced into a wellbore penetrating a subterranean formation. The cement composition may be allowed to set in the wellbore.

The present invention pertains to a phosphate cement composition and process for making such composition. More particularly, it pertains to a phosphate cement coating and process for making the coating for application to a given substrate.