STABLE LIQUID SUSPENSION COMPOSITIONS AND THE METHOD OF THEIR PRODUCTION AND APPLICATION Russian patent published in 2006 - IPC C09K8/35 C09K8/588 

FIELD: oil-producing industry; chemical industry; methods of production and application of the stable liquid suspension compositions.

SUBSTANCE: the invention is pertaining to the liquid suspension compositions, which may be used as the additives in the water-containing liquids, and to the methods of production and application of such liquid suspension compositions. The technical result of the invention is provision of stability of the liquid suspension composition, which is ecologically favorable for usage in development of the oil fields. The non-aqueous suspension containing the non-soluble particles dispersed in the non-aqueous liquid medium containing the dissolved suspension additive, in which the indicated non-aqueous liquid medium is sampled from the group consisting of glycols, polyglycols, glycol ethers, the glycol esters and the mixed glycol ethers and esters - the esters of the glycol ether, and in which the pointed suspension additive is sampled from the group consisting of hydroxypropylcellulose, ethylcelluloses, polyvinylpyrolidone, polyacrylic acid and polyvinylpyrolidone copolymers and an acrylic acid. The method of production of the non-aqueous suspension providing for mixing of the non-soluble particles, the indicated suspension additive and the indicated non-aqueous liquid medium the suspension additive is added to the part of the non-aqueous liquid medium, intermix till production the solution, water dilute the solution by the non-aqueous liquid medium till production of the desirable concentration of the suspension additive, then add the non-soluble particles. The method of treatment of any oil well or gasser or any adjacent to it subterranean formations provides for the stages of mixing of the indicated suspension with the water-containing solution and injection of the so formed mixture into the well bore.

EFFECT: the invention ensures provision of stability of the liquid suspension composition, which is ecologically favorable for usage in development of the oil and gas fields.

25 cl, 2 ex, 2 tbl