Thermogasochemical binary composition and method of application for processing bottom-hole and remote zones of an oil and gas bearing formation

摘要

FIELD: oil and gas industry.SUBSTANCE: composition contains equimolar solutions of ammonium salts of mineral acids and alkali metal nitrites with initiating solution, aldehyde solutions containing alcohols or acetone are used as initiating solution converting aldehyde moieties to hemiacetals that have reduced reactivity which provides an induction period sufficient for safe pumping of initial reagents into oil and gas formation. The method includes injection of thermo-gas-chemical binary composition: the solutions of ammonium salts of mineral acids and nitrites of alkali metals with initiating solution into the formation. Mixing of solutions of ammonium salts of mineral acids and alkali metal nitrites with the initiating solution is carried out in intensive stirring mode before the beginning of thermo-gas-chemical binary composition injection into the oil and gas bearing formation.EFFECT: increased efficiency for bottom-hole and remote zones treatment of oil and gas bearing formation, safety of the process, reduced raw costs.6 cl, 2 dwg, 5 tbl, 20 ex