LIME-SILICA CEMENT WITH LOW CONTENT OF PORTLAND CEMENT Russian patent published in 2020 - IPC E21B33/13 C09K8/467 C04B14/04 C04B28/18 C04B103/10 C04B103/24 C04B103/42 C04B103/50 

FIELD: soil or rock drilling; mining.

SUBSTANCE: group of inventions relates to well cementing methods and systems. Method of creating a cement composition involves obtaining or providing a cement mixture containing binding materials, obtaining or providing analysis for content of oxides for binding components. Total amount of silica and lime in cement mixture is calculated based on analysis for content of oxides. Calculating the ratio of lime and silica in the cement mixture, selecting the target ratio of lime and silica, calculating the concentration of additional lime or silica required in the cement mixture to make the lime and silica ratio greater than or equal to the target ratio of lime and silica. Concentration of at least one of binding components is adjusted so that ratio of lime and silica corresponds or exceeds target ratio of lime and silica. System further comprises a computer system configured to receive input from the user and generate concentrations of binding components for the cement composition. Computer system is configured to generate concentrations of binding components based on the target ratio of lime and silica and analysis for content of oxides for each of the binding components.

EFFECT: technical result is higher efficiency of selecting components of cement composition.

14 cl, 3 dwg