DEVICE FOR PULSE ALTERNATING-SIGN PROCESSING OF FORMATION WELL BORE ZONE Russian patent published in 2012 - IPC E21B43/263 

FIELD: oil and gas production.

SUBSTANCE: device is made in the form of implosive chamber. The role of a charge is performed by facing powder pressure generator made from elements of ballistite gun powder, located at the outer surface of implosive chamber casing with the possibility of approaching the wall of casing. There is the possibility of facing powder pressure generator ignition, generating of gaseous combustion products and pressure pulse with destruction - cracking of formation rocks in well bore zone and depressurisation of implosive chamber casing after pressure decrease till hydrostatical level. Note that there is provision of wave process of pressure fluctuations with the values of maximum and minimum pressure and duration providing further development of cracks in formation well bore zone.

EFFECT: possibility to develop pressure generator for oil and gas production intensification on the base of gun powder that is characterised by reduced charge mass and comparable to the existing more powerful samples of generators in efficiency.

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