PERFORATION AND BOTTOMHOLE TREATMENT METHOD AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC E21B43/117 E21B43/263 

FIELD: oil and gas industry.

SUBSTANCE: method includes the well perforation with the hollow carrier perforator and then performing the reservoir fracture, using the thermogas acid module, equipped with the solid fuel charge, performing, when it burns, gas releasing, that flows through the connector unit into the perforator casing and acting with the directed jets on the formed perforation channels. In the thermogas acid module, the non-detonating mixture composition is used as the solid fuel, which forms during combustion, the gas with the predominant content of the chemically active mixture of hydrochloric and hydrofluoric acids, due to which the chemical action on the reservoir bottomhole skeleton is created, composed of both carbonate and terrigenous rocks as well, and the silicate contaminants formed in the bottomhole zone during the drilling process and subsequent well cementation, and thereby additionally increase the dimensions of channels and cracks, decompress the perforation channels walls and provide the filtration surface growth in the productive reservoir, surrounding the channels. The gas effect on the perforation channels in the reservoir is produced in the form of impulse pressures. In this case, the method can be implemented using both single and multiple applications.

EFFECT: increase of reliability and efficiency, simplification of carrying out and expansion of the reservoir perforation application conditions with separate subsequent start-up in the single device of the perforator and the thermogas acid module, while burning the solid fuel charge, the active mixture of hydrochloric and hydrofluoric acids is formed.

2 cl, dwg