Patent ID: 9228413
Filing Date: 2016-01-05
CPC Classification: E21B

Claim Text:
1. A setting tool assembly for providing setting force to a settable downhole tool positioned in a subterranean wellbore, the setting tool assembly comprising: a housing defining a first pressure chamber and second pressure chamber, the pressure chambers fluidly isolated from one another within the housing; a first piston member slidingly mounted in the first pressure chamber and a second piston member slidingly mounted in the second pressure chamber; a first selectively openable port positioned between the first pressure chamber and a hydrostatic fluid, wherein the first piston member is movable in response to the hydrostatic fluid upon opening of the first selectively openable port; a second selectively openable port positioned between the second pressure chamber and a hydrostatic fluid, wherein the second piston member is movable in response to the hydrostatic fluid upon opening of the second selectively openable port; a first force-transmitting member attached to the first piston member, attachable to the settable downhole tool, and operable to exert a first force on the settable downhole tool upon opening of the first selectively openable port; and a second force-transmitting member attached to the second piston member and operable to exert a second force on the first force-transmitting member upon opening of the second selectively openable port, and wherein the combined first and second forces are operable to fully set the settable downhole tool.