US 11,053,759 B2
Compact setting tool
Johnny Covalt, Burleson, TX (US); Joseph Albert Henke, Hallettsville, TX (US); and Roger Griffin, Weatherford, TX (US)
Assigned to Hunting Titan, Inc., Pampa, TX (US)
Appl. No. 16/478,107
Filed by Hunting Titan, Inc., Pampa, TX (US)
PCT Filed Jan. 19, 2018, PCT No. PCT/US2018/014547
§ 371(c)(1), (2) Date Jul. 15, 2019,
PCT Pub. No. WO2018/136808, PCT Pub. Date Jul. 26, 2018.
Claims priority of provisional application 62/448,236, filed on Jan. 19, 2017.
Prior Publication US 2019/0368293 A1, Dec. 5, 2019
Int. Cl. E21B 23/06 (2006.01); E21B 33/128 (2006.01)
CPC E21B 23/065 (2013.01) [E21B 33/128 (2013.01)] 31 Claims
OG exemplary drawing
 
1. An apparatus for setting a radially expandable seal in a wellbore comprising:
a long cylinder with a thru bore having a first undercut and a second undercut, an uphole end and a downhole end;
a top adaptor coupled to the uphole end having a bore;
a cylinder head coupled to the downhole end having a through bore;
a powercharge chamber piston slideably disposed within long cylinder thru bore, being located proximate to the top adaptor, and having a bore, and at least one o-ring seal slideably circumferentially engaged with the thru bore;
a bottom metering piston slideably disposed within the long cylinder thru bore, downhole from and coupled to the power charge chamber piston, having at least one o-ring seal slideably circumferentially engaged with the thru bore;
a piston rod coupled to and located downhole from the bottom metering piston, slideably engaged with the cylinder head thru bore, having a neck portion proximate to the bottom metering piston; and having at least one o-ring seal slideably circumferentially engaged with the cylinder head;
wherein the linear downhole movement of the power charge piston, bottom metering piston, and piston rod can set a radially expandable seal, separate from said radially expandable seal, and then equalize pressure within the long cylinder with the wellbore using first undercut, second undercut, and piston rod neck portion coming into contact with respective o-ring seals after a predetermined downhole distance relative to the long cylinder is traversed.