Methods and apparatus for a downhole tool
AssigneeWeatherford/Lamb, Inc.
InventorsWalter Stone Thomas Fagley, IV, Gary Duron Ingram, Christopher Carter Johnson
Life of this patent
Estimating the term…
Abstract
An apparatus and method for operating a packer and a fracture valve is shown. The packer may include a tubular mandrel having a longitudinal bore with an annular packing element and a first piston disposed around the mandrel, wherein the first piston is operable to set the packing element, and a second piston operable to isolate fluid communication between the first piston and the mandrel bore. The fracture valve may include a tubular mandrel having a longitudinal bore and a port, a piston operable to close fluid communication between the bore and the port, and a latch disposed between the piston and the mandrel operable to resist movement of the piston.
Claims20
A valve for injecting fluid into a wellbore, comprising:
- a tubular mandrel having a bore formed therethrough and a port formed through a wall thereof;
- a piston axially moveable relative to the mandrel between a first position where the piston substantially seals the bore from the port and a second position where the bore is in fluid communication with the port;
- and
- a latch disposed between the piston and the mandrel, the latch operable to resist movement of the piston relative to the mandrel from the first position to the second position and from the second position to the first position.
A method for injecting fluid into a wellbore, comprising:
- lowering a valve into the wellbore, the valve comprising:
- a tubular mandrel having a bore formed therethrough and a port formed through a wall thereof;
- a piston axially moveable relative to the mandrel between a first position where the piston substantially seals the bore from the port and a second position where the bore is in fluid communication with the port;
- and
- a latch disposed between the piston and the mandrel, the latch operable to resist movement of the piston relative to the mandrel from the first position to the second position and from the second position to the first position;
- supplying fluid to the valve;
- and
- injecting fluid into an annulus of the wellbore surrounding the valve.
A method for injecting fluid into a wellbore, comprising:
- lowering a valve into the wellbore, wherein the valve includes a piston movable from a first position to a second position using fluid pressure to open fluid communication between a bore of the valve and an annulus of the wellbore surrounding the valve;
- applying pressurized fluid to the piston;
- resisting movement of the piston from the first position to the second position using a latch configured to secure the piston in the first position;
- actuating the latch to move the piston from the first position to the second position;
- and
- injecting pressurized fluid from the bore of the valve into the annulus of the wellbore.
Dependencies are inferred from the claim text.