FIELD: oil extractive industry.
SUBSTANCE: method utilizes a thermo-chemical element having chemically active mass made on base of at least one alkali metal, wrought in isolating cover. Hardener is distributed evenly at all amount of chemically active mass and is in form of particles of material having specific weight more than one and size no more than 0.5 mm. Chemically active mass may be made from ally of sodium and lithium. Amount of lithium is no more than 6% of chemically active mass. Isolating cover is made with forming in it, previously to injecting into element well, of open limited surface for interaction of chemically active mass directly to well liquid. Thermo-chemical elements are inserted from mouth through lubricator into well. During interaction of chemically active mass to water being in well fluid, a thermo-chemical reaction starts with emitting of heat. Source of reaction moves along direction towards pit-face under effect of its own gravity and destruction of asphalt-resin and paraffin-hydrate deposits. Destruction of asphalt-resin and paraffin-hydrate deposits is performed by increasing in steps of size of formal passage in asphalt-resin and paraffin-hydrate deposits. For this thermo-chemical elements are consecutively inserted having increasing outer size. At later stage elongated thermo-chemical elements are inserted having longitudinal, through axial channel.
EFFECT: higher efficiency.
2 cl, 7 dwg, 1 ex
