SOLID-FUEL GAS GENERATOR FOR OIL AND GAS WELL TREATMENT Russian patent published in 2007 - IPC E21B43/263 

FIELD: oil and gas production industry, particularly to stimulate well bottom zone of oil-and-gas reservoir with solid-fuel charges, namely gas generators.

SUBSTANCE: device comprises tubular cylindrical charges providing oscillating combustion regime, ignition charge and load-bearing logging cable with structure fastening members. In the case of steeply inclined deflected and horizontal well drilling logging cable is inserted inside flexible solid pipe following well direction and has current-carrying threads to be connected with wires of initiating unit of the ignition charge. Flexible solid pipe is connected to protective case, which encloses the charges. The case is made as perforated or solid metal flow pipe or is created of fiberglass plastic and has members, which tightly draw charges together and to case. Tubular cylindrical charges have different channel lengths and diameters to provide high-frequency and low-frequency pressure pulses during charge combustion.

EFFECT: improved efficiency and reliability, increased oil, gas condensate and gas output from well extending in any direction.

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