Mechanically operated reverse cementing crossover tool
AssigneeWeatherford Technology Holdings, LLC
InventorsRichard L. GIROUX, Eric R. EVANS
Life of this patent
Estimating the term…
Abstract
A crossover tool for use in a wellbore includes: a tubular housing having a bypass port; a mandrel having a bore therethrough and a mandrel port in fluid communication with the mandrel bore, the mandrel movable relative to the tubular housing between a first position where the mandrel port is isolated from the bypass port and a second position where the mandrel port is aligned with the bypass port; and an actuator operable to move the mandrel between the first position and the second position. The actuator includes a first piston connected to the mandrel and a second piston operable in response to the first piston.
Claims20
A crossover tool for use in a wellbore, comprising:
- a tubular housing having a bypass port;
- a mandrel having a bore therethrough and a mandrel port in fluid communication with the mandrel bore, the mandrel movable relative to the tubular housing between a first position where the mandrel port is isolated from the bypass port and a second position where the mandrel port is aligned with the bypass port;
- and
- an actuator operable to move the mandrel between the first position and the second position, comprising:
- a first piston connected to the mandrel;
- and
- a second piston operable in response to the first piston.
A crossover tool for use in a wellbore, comprising:
- a tubular housing having a bypass port;
- a first mandrel having a bore therethrough and comprising:
- a mandrel port;
- a first seat;
- and
- a first piston movable in a first direction between a first position where the mandrel port is isolated from the bypass port and a second position where the mandrel port is aligned with the bypass port and movable in response to the first seat receiving a first fluid blocking member;
- and
- a second mandrel having a bore therethrough and comprising:
- a second seat;
- and
- a second piston movable in a second direction in response to the first piston.
A method for cementing a liner string in a wellbore, comprising:
- running a liner string and a crossover tool into the wellbore, the crossover tool comprising:
- a first seat;
- a first mandrel having a first piston and a mandrel port;
- and
- a second piston;
- landing a first obturating member in the first seat;
- supplying pressure to a bore of the crossover tool to move the first piston;
- moving the second piston in response to movement of the first piston;
- shifting the crossover tool from a first position to a second position in response to landing the first obturating member in the first seat, wherein:
- the mandrel port is isolated from a bypass port in the first position;
- and
- the mandrel port is aligned with the bypass port in the second position;
- and
- pumping cement through the crossover tool and into an annulus between the liner string and the wellbore.
Dependencies are inferred from the claim text.