Method for Stimulating a Well Using Fluid Pressure Waves

Abstract

Methods for cleaning or stimulating a well include providing an isolation device, providing a penetration device, isolating a zone, and penetrating a portion of the formation utilizing the penetration device. Isolating and penetrating may occur in a single trip into the well. The isolation device may include one or more packers. The penetration device may be a pulsating/oscillating hydrajet that introduces fluid pressure waves into the formation.

1 . A method for cleaning a well comprising:
 providing an isolation device;   providing a penetration device;   isolating a zone within the well utilizing the isolation device; and   penetrating a portion of a formation located within the zone utilizing the penetration device;   wherein the isolating and penetrating are done in a single trip into the well.   
   
   
       2 . The method of  claim 1 , wherein the isolation device comprises one or more packers and wherein isolating the zone comprises setting the packers. 
   
   
       3 . The method of  claim 2 , wherein the packers comprise at least one straddle cup packer. 
   
   
       4 . The method of  claim 1 , wherein the isolation device comprises at least two packers and wherein isolating the zone comprises setting the packers such that the zone is situated between the packers. 
   
   
       5 . The method of  claim 1 , wherein the penetration device comprises a pulsating/oscillating hydrajet and wherein penetrating comprises introducing fluid into the formation with the pulsating/oscillating hydrajet. 
   
   
       6 . The method of  claim 1 , wherein penetrating comprises introducing fluid pressure waves into the formation. 
   
   
       7 . The method of  claim 6 , wherein the fluid pressure waves are small amplitude waves. 
   
   
       8 . The method of  claim 6 , wherein the fluid pressure waves are high frequency waves. 
   
   
       9 . The method of  claim 7 , wherein the fluid pressure waves are small amplitude waves. 
   
   
       10 . The method of  claim 1 ,
 wherein the isolation device comprises at least two straddle cup packers;   wherein isolating the zone comprises setting the packers such that the zone is situated between the packers;   wherein the penetration device comprises a pulsating/oscillating hydraj et;   wherein penetrating comprises introducing fluid pressure waves into the formation with the pulsating/oscillating hydrajet; and   wherein the fluid pressure waves are high frequency, small amplitude waves.   
   
   
       11 . A method for stimulating a well comprising:
 providing an isolation device;   providing a penetration device;   isolating a zone within the well utilizing the isolation device; and   penetrating a portion of a formation located within the zone utilizing the penetration device;   wherein the isolating and penetrating are done in a single trip into the well.   
   
   
       12 . The method of  claim 10 , wherein the isolation device comprises one or more packers and wherein isolating the zone comprises setting the packers. 
   
   
       13 . The method of  claim 12 , wherein the packers comprise at least one straddle cup packer. 
   
   
       14 . The method of  claim 10 , wherein the isolation device comprises at least two packers and wherein isolating the zone comprises setting the packers such that the zone is situated between the packers. 
   
   
       15 . The method of  claim 10 , wherein the penetration device comprises a pulsating/oscillating hydrajet and wherein penetrating comprises introducing fluid into the formation with the pulsating/oscillating hydraj et. 
   
   
       16 . The method of  claim 10 , wherein penetrating comprises introducing fluid pressure waves into the formation. 
   
   
       17 . The method of  claim 16 , wherein the fluid pressure waves are large amplitude waves. 
   
   
       18 . The method of  claim 16 , wherein the fluid pressure waves are low frequency waves. 
   
   
       19 . The method of  claim 17 , wherein the fluid pressure waves are large amplitude waves. 
   
   
       20 . The method of  claim 11 ,
 wherein the isolation device comprises at least two straddle cup packers;   wherein isolating the zone comprises setting the packers such that the zone is situated between the packers;   wherein the penetration device comprises a pulsating/oscillating hydrajet;   wherein penetrating comprises introducing fluid pressure waves into the formation with the pulsating/oscillating hydrajet; and   wherein the fluid pressure waves are low frequency, large amplitude waves.