Method of treating bottom-hole formation zone

Abstract

The invention relates to the methods of treating a bottom-hole formation zone to increase in well productivity and rocks permeability. According to this method a pulse generator should be tripped in a well and the formation pulse treatment should be conducted by generating negative pressure pulses of amplitude higher than the tensile formation strength. The method provides the high fissuring rate by breaking formation fluid-bearing permeable rocks around a wellbore.

1 . A method of treating a bottom-hole formation zone involving a pulse generator to be tripped in a well followed by formation pulse treatment distinguishing by the fact that negative pressure pulses should be generated of amplitude higher than tensile formation strength. 
     
     
         2 . A method according to  claim 1  distinguishing the fact that prior to pulse action the pressure is built in a bottom-hole well zone higher than the pore pressure in a far-field zone for the formation. 
     
     
         3 . A method according to  claim 1  distinguishing the fact that in case of hydraulic formation fracturing, pressure pulses should be fed as a breaking fissure grows. 
     
     
         4 . A method according to  claim 2  distinguishing the fact that prior to pulse action in the created fracture zone the pressure should be built higher than the principle maximum stress in a far-field zone for the formation.