METHOD OF THERMOCHEMICAL TREATMENT OF A PRODUCTIVE STRATUM Russian patent published in 2003 - IPC

FIELD: oil-and-gas production industry. SUBSTANCE: invention presents a method of thermochemical treatment of a productive stratum. The method provides for pumping in the treatment zone through tubes of a production strings of the composition including a combustible - oxidative structure, containing components ( in mass %): ethanolaminenitrate - 40-82, niter - 1-20, water - 15-50, and the initiator of burning in amount of 2-50 % from the mass of combustible-oxidative structure. The composition components are pumped in the stratum separately: first - the combustible-oxidative structure, then in a zone, where the combustible - oxidative structure is located, they introduce the initiator of burning, in the capacity of which they use a powder pressed in the tablets coated with paraffin or rosin capsules of at least one borohydride of alkali metal of the following line: lithium, sodium, potassium, predominary sodium boron hydride. Additionally into the combustible - oxidative structure one can introduce no more than 10 mass % of one of the following acids: nitrogenous, acetic, phosphoric. EFFECT: increase of efficiency and safety of process. 3 cl, 1 tbl, 1 dwg