GAS-DYNAMIC TREATMENT METHOD OF FORMATION Russian patent published in 2020 - IPC E21B43/263 

FIELD: oil, gas and coke-chemical industries.

SUBSTANCE: invention relates to oil industry and, in particular, can be used for intensification of fluid influx. Proposed method comprises assembling pressure generator composed of group of gas-generating solid fuel charges with central through channels. Then charges are lowered on the suspension to the well at the specified depth. Signal for ignition of charges is supplied. At that, at treatment of spaced apart productive stratum in one descent of gas generator gas-generating charges are divided into groups installed opposite productive interlayers. Each group of gas-generating charges is equipped with its own initiating head. In each group the charge closest to the next initiating head is placed into the housing. It is made without holes for gas outlet on side surface and with holes in ends. Initiation of the first head is performed forcibly mechanically or hydraulically. Initiation of subsequent heads is ensured by action of pressure of combustion products of the previous group of gas-generating charges. During combustion of gas-generating charges there provided is axial component of pressure field with superposition of pressure pulses from combustion of each group of charges. Charges nearest to the next initiating head are accepted with weight not less than 0.1 of total weight of their group of charges.

EFFECT: technical result is increased efficiency of inflow intensification due to improved filtration-capacitance properties of formation.

1 cl, 2 dwg