US 9,810,041 B2
Method and device for cleaning control particles in a wellbore
Todd Parker, Calgary (CA); Shawn Carroll, Calgary (CA); and Dan Skibinski, Calgary (CA)
Assigned to Blue Spark Energy Inc., Calgary (CA)
Filed by Blue Spark Energy Inc., Calgary (CA)
Filed on Jul. 23, 2015, as Appl. No. 14/807,597.
Claims priority of provisional application 62/028,504, filed on Jul. 24, 2014.
Prior Publication US 2016/0024888 A1, Jan. 28, 2016
Int. Cl. E21B 37/08 (2006.01); E21B 28/00 (2006.01); E21B 37/00 (2006.01)
CPC E21B 37/08 (2013.01) [E21B 28/00 (2013.01); E21B 37/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A shock wave generating device for cleaning control particles in a wellbore of a subterranean formation to improve the recovery of formation fluids and/or gases, said wellbore comprising a wall defining a borehole, at least one control equipment arranged into said borehole and a plurality of control particles arranged between said control equipment and said wall, said shock wave generating device comprising:
a chamber defined at least in part by a membrane, said chamber being partially filled with a shock wave transmitting liquid and which is adapted to be arranged into said borehole nearby said control equipment, said membrane is sized and shaped to isolate said shock wave transmitting liquid from external fluids during repeated use of the shock wave generating device; and
an electrical discharge unit comprising a first electrode and a second electrode located in said chamber, said electrical discharge unit configured for generating at least one electrical discharge that propagates at least one shock wave into said shock wave transmitting liquid through said control equipment and said control particles for cleaning said control particles.