METHODS OF EXTRACTING HYDROCARBONS FROM A SUBTERRANEAN FORMATION, AND METHODS OF TREATING A HYDROCARBON MATERIAL WITHIN A SUBTERRANEAN FORMATION Russian patent published in 2018 - IPC E21B43/24 E21B37/06 C09K8/524 C09K8/92 

FIELD: mining.

SUBSTANCE: invention relates to extracting hydrocarbons from a subterranean formation. Method of extracting hydrocarbons from a subterranean formation comprising forming a suspension comprising a carrier fluid and reactive particles, each of which comprises a core containing one or more of the following metals: Mg, Mn and Zn, and an aluminum oxide shell applied to and completely encapsulating the core, core is more exothermically reactive with water than the aluminum oxide shell, introducing the suspension into a subterranean formation containing a hydrocarbon material to form a emulsion stabilized by reactive particles and comprising a dispersed hydrocarbon phase and continuous water phase, exothermically reacting at least a portion of the reactive particles with at least aqueous material within the subterranean formation to form a treated hydrocarbon material from the hydrocarbon material, and extracting the treated hydrocarbon material from the subterranean formation. Method of extracting hydrocarbons from a subterranean formation, comprising selecting a discrete coated nanoparticle, each comprising a core comprising a metal alloy exothermically reacting with water, and a shell comprises an organic material less exothermically reactive with water than the metal alloy, selecting a liquid from the group consisting of oil and non-polar organic liquid, selecting at least one additive from the group consisting of a nanoparticle catalyst, a surfactant, emulsifier, a corrosion inhibitor, a dispersant, a scale inhibitor, a scale dissolver, a defoamer, a biocide, mixing discrete coated nanoparticles with a liquid and at least one additive to form a suspension, mainly consisting of discrete coated nanoparticles, liquid and at least one additive, introducing the suspension into a subterranean formation containing a hydrocarbon material attached to the interior surfaces of the subterranean formation, modifying at least one of the following parameters: temperature, pH, material composition and pressure in the subterranean formation ensures the reaction of at least a portion of the discrete coated nanoparticles with the aqueous material and forming a stabilized emulsion comprising treated hydrocarbon material, and extracting the stabilized emulsion from the subterranean formation. Method of treating a hydrocarbon material within a subterranean formation, comprising forming a suspension consisting of discrete functionalized nanoparticles capable of exothermic reaction with water, each of the discrete functionalized nanoparticles comprises a core, containing an alloy of Mg or anhydrous AlCl_3, a shell applied to and completely encapsulating the core, and comprising alumina, functions, attached to the shell and selected from the group consisting of carboxyl groups, ether groups, ketone groups, amino group, hydroxyl group, alkoxy group, alkyl group, aryl group, aralkyl group, alkaryl group, lactone group, imidazole group, pyridine group and fluorinated group, and a liquid selected from the group consisting of fresh water, sea water, produced water, saline, aqueous foam and a mixture of water and alcohol, providing the suspension into interstitial spaces of a subterranean formation containing a hydrocarbon material to form an emulsion stabilized by discrete functionalized nanoparticles, and reacting at least a portion of the discrete functionalized nanoparticles of the stabilized emulsion within the subterranean formation to produce heat and modify at least one property of the hydrocarbon material. Invention is developed in dependent items of the formula.

EFFECT: increased efficiency of extracting hydrocarbons.

17 cl, 1 dwg