US 9,810,036 B2
Pressure actuated frack ball releasing tool
Jason C. Mailand, The Woodlands, TX (US); Daniel S. Matthews, Cypress, TX (US); and Steve Rosenblatt, Houston, TX (US)
Assigned to Baker Hughes, Houston, TX (US)
Filed by Baker Hughes Incorporated, Houston, TX (US)
Filed on Mar. 10, 2014, as Appl. No. 14/202,974.
Prior Publication US 2015/0252640 A1, Sep. 10, 2015
Int. Cl. E21B 23/04 (2006.01); E21B 33/12 (2006.01); E21B 23/06 (2006.01); E21B 43/11 (2006.01)
CPC E21B 33/12 (2013.01) [E21B 23/06 (2013.01); E21B 43/11 (2013.01); E21B 23/04 (2013.01)] 16 Claims
OG exemplary drawing
 
6. A completion assembly for a subterranean location, comprising:
a body disposed at the subterranean location having a lower end;
an object initially positioned within said body and above said lower end and selectively retained by a retainer in said body;
an actuation assembly in said body responsive to a pressure change at the subterranean location to defeat said retainer for exit of said object past said lower end of said body, while said retainer remains with said body;
at least one perforating gun, said gun, when firing, creating said pressure change that operates said actuation assembly.