FIELD: oil and gas industry.
SUBSTANCE: hydraulic fracturing method of formation saturated with fluid medium involves the following stages: introduction of some quantity of fluid medium of formation hydraulic fracturing to well shaft, which is enough for hydraulic fracturing of formation; introduction of formation treatment substance containing liquid carbon dioxide to well shaft; and evaporation at least of some part of formation treatment substance; at that, stages of introduction of some amount of fluid medium of formation hydraulic fracturing to the well shaft and introduction of formation treatment substance containing liquid carbon dioxide to the well shaft include the following stages as well: pressure control in well shaft and formation so that at least some portion of formation treatment substance remains in liquid state after it is pumped to well shaft; lowering of tubing of some length to well shaft so that annular space is formed between tubing and well shaft; pumping of formation treatment substance via tubing; pumping of fluid medium of formation hydraulic fracturing to annular space; pumping of formation treatment substance to fluid medium of formation hydraulic fracturing in order to create the second fluid medium; collision of the second fluid medium with formation; creation at least of one hydraulic fracturing in formation; forcing-through of the second fluid medium to formation; and pressure discharge in well shaft.
EFFECT: increasing the efficiency of the method.
9 cl, 1 tbl, 3 dwg
