SPACER LIQUID USED IN CEMENTING OF CASING STRINGS Russian patent published in 2010 - IPC C09K8/40 

FIELD: construction.

SUBSTANCE: spacer liquid used in cementing of casing strings, contains the following components, wt %: water 91.7-99.37; plasticiser - polycarboxylate Melflux or reagent on the basis of melamine and naphthalene resins 0.01-1.0; ether of cellulose - oxyethylcellulose or carboxyethylcellulose, or polyanion cellulose, or methyl cellulose 0.01-1.0; POLYCEM DF 0.1-0.3; caustic soda 0.5-5.0; synthetic detergent - SMS 0.01-1.0.

EFFECT: provision of high extent of cement stone adhesion to holding surfaces.

3 cl, 2 tbl, 1 ex