METHOD AND DEVICE FOR TREATMENT OF BOTTOM-HOLE ZONE OF BED Russian patent published in 1999 - IPC

FIELD: oil production industry. SUBSTANCE: thermal gas generator integrally combined with reactive material made from gas-producing inflammable composite material and container with working fluid are brought to bottom-hole of well by means of cable rope. Working fluid is heated, and hydraulic pressure is created in treating interval. Chamber and zone of mixing is coaxially installed between thermal gas generator and container with working fluid. Effected in this zone is intensive mixing of flow of working fluid created by forcing-out from container against flow of gaseous products of burning of thermal gas generator. For forcing out working fluid from container, bottom part of container has piston and block of gas-producing inflammable composite material. Working fluid in mixing zone is heated to boiling temperature and transformed into gas-liquid state. Application of aforesaid method and device improves efficiency of overall thermal-gas-chemical treatment of bottom-hole zone of bed. EFFECT: higher efficiency. 4 cl, 1 dwg