PREPARATION METHOD OF COMPOUND FOR ACID-SOLUBLE PLUGGING STONE PRODUCTION Russian patent published in 2014 - IPC C09K8/473 

FIELD: oil and gas industry.

SUBSTANCE: method can be applied in preparation of compounds mainly used for fixation of waterproof compounds in a horizontal well bore, for temporary formation blocking and setting of a supporting plug for offshoot kick-off. The method of compound preparation for production of acid-soluble plugging stone involves mixing microcalcite with 160-315 mcm particle size with plain oil-well portland cement, adding air-entraining agent "Aeroplast" to fresh water and mixing of plain oil-well portland cement with microcalcite using fresh water, with adding air-entraining agent "Aeroplast", with the following mixture ratio: plain oil-well portland cement - 59.9-64.95 weight fraction; microcalcite - 35-40 weight fraction; air-entraining agent "Aeroplast" - 0.05-0,1 weight fraction; fresh water - 50 weight fraction.

EFFECT: increased strength of acid-soluble plugging stone.

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