METHOD FOR TREATING A SUBTERRANEAN FORMATION WITH A MORTAR SLURRY WITH THE POSSIBILITY OF FORMATION OF A PERMEABLE LAYER OF HARDENED MORTAR SLURRY Russian patent published in 2018 - IPC E21B43/267 C09K8/80 

FIELD: geophysics.

SUBSTANCE: invention relates to a method for treating a subterranean formation. Method of treating a subterranean formation, comprising the preparation of a mortar slurry, made with the possibility of setting to form a cured cement mortar with a compressive strength below the closure pressure of the subterranean formation, wherein said slurry of cement slurry contains a cementitious material, water and less than 4 % of the degradable material, based on the weight of the cementitious material in the slurry, pumping said slurry into the subterranean formation at a pressure sufficient to create a fracture in the subterranean formation while maintaining a higher pressure than the burst closure pressure, allowing the said slurry to set, forming a mortar in the fracture, lowering the pressure below the burst closing pressure, allowing the hardened slurry to crack, forming a cracked hardened slurry, and the extraction of hydrocarbons from the formation through the cracked hardened cement slurry in the fracture. Method for treating a subterranean formation, comprising preparation of a mortar slurry capable of setting to form a permeable cured cement mortar with a conductivity of more than 10 mD · ft, wherein said slurry comprises a cementitious material, aggregate, water and less than 4 % of the degradable material, based on the weight of the cementitious material in said slurry, pumping said slurry into a subterranean formation at a pressure sufficient to create a fracture in the subterranean formation, allowing the slurry to grind to form a permeable cured cement slurry in the fracture, and the extraction of hydrocarbons from the formation through the hardened mortar slurry in the fracture. Invention is developed in dependent items of the formula.

EFFECT: technical result is an increase in processing efficiency.

20 cl, 10 dwg