EMULSION CEMENT SLURRY ON HYDROCARBON BASE Russian patent published in 2015 - IPC C09K8/467 

FIELD: oil and gas industry.

SUBSTANCE: cement slurry contains 46.0-75.0 wt % of binding material and as such portlandcement of packing class G or cement mix Micro TSS BTRUO or a mix of aluminous cement GTS-40 and microcement Micro TSS BTRUO in mass ratio of 3:7, or a mix of aluminous cement GTS-40 and portlandcement PTST 50 in mass ratio of 1:4 is used; 1.0-4.0 wt % of surfactant and as such a mix of emulsifying agent MR-150 is used with calcium alkyl benzosulphonate and emulsifying agent OP-4 in mass ratio of 1:4:9; or a mix of emulsifying agent MR-150 is used with calcium alkyl benzosulphonate, water-repellent agent ABR and Neftenol VKS-N in mass ratio of 4:4:3:3; 9.0-27.0 wt % of diesel fuel; 0.0-0.5 wt % of calcium chloride; 0.0-2.0 wt % of condensed microsilica MK-85 and fresh water - the remaining share.

EFFECT: improved fluidity, reduced water loss, improved strength and durability of cement stone.

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