Method for increasing the permeability of the bottom well-bore region of a seam (is11.0138-us-pct)

Abstract

To increase permeability of a near-wellbore zone of a formation an operation on stimulation of a fluid flow into a wellbore is performed, the operation comprising injecting chemical substances into a targeted zone of the formation. During the stimulation an electrical field is applied to the targeted zone of the formation.

1 . A method for increasing permeability of a near-wellbore zone of a formation, comprising:
 injecting chemical substances into a targeted zone of the formation to stimulate fluid flow into a wellbore, and   applying an electrical field to the targeted zone of the formation.   
     
     
         2 . The method of  claim 1 , wherein the chemical substances comprise an acid formation treatment. 
     
     
         3 . The method of  claim 1 , wherein the injecting comprises hydraulic fracturing of the formation. 
     
     
         4 . The method of  claim 1 , wherein during the injecting, an additional treatment is applied to the targeted zone of the formation, the additional treatment is selected from a group consisting of magnetic, thermal, acoustic, and a combination thereof. 
     
     
         5 . The method of  claim 1 , wherein the electrical filed is applied by electrodes, at least one of the electrodes is disposed in the wellbore on the level of the targeted zone of the formation. 
     
     
         6 . The method of  claim 5 , wherein one of the electrodes is disposed on the surface. 
     
     
         7 . The method of  claim 1 , wherein the electrical filed is applied by electrodes, one of the electrodes is disposed lower than the targeted zone of the formation while the other electrode is disposed higher than the targeted zone of the formation. 
     
     
         8 . The method of  claim 1 , wherein the electrodes comprise casing and tubing.