Weatherford Technology Holdings, LLC

Weatherford/lamb, Inc.

Candido Castro

Brian J Ritchey

Joshua Hornsby

A treatment tool can include a housing with longitudinal passages, a valve that controls flow between sections of one passage, another valve that controls flow between the one passage and a section of another passage, and a locking device that prevents the first valve from being transitioned to an open configuration from a closed configuration. A method can include flowing a fluid through a passage of a service string and into an annulus about a screen, the fluid entering the screen and flowing to another annulus via another passage of the service string, then installing a plug in the first passage, thereby preventing flow through the first passage to the annulus about the screen, and creating at least one pressure differential across the plug, thereby preventing flow from an interior of the screen to the other annulus and permitting flow from the first passage to the screen interior.

Treatment tool for use in a subterranean well

A downhole tool has a housing, a piston, and a seat and is for use with a deployed plug or ball and applied fluid pressure. The housing defines a bore, and the piston is disposed in the bore of the housing and is biased to move from a first position to a second position. The seat is also disposed in the bore of the housing and is operably connected to the piston. The seat rotates from a first orientation for engaging the deployed plug to a second orientation for passing the deployed plug in response to movement of the piston from the first position near the seat to the second position away from the seat.

Revolving ball seat for hydraulically actuating tools

A downhole tool has a housing, mandrel, and ball seat. The housing defines a first bore, and the mandrel defines a second bore. The mandrel is disposed in the first bore of the housing and defines an annular space with the housing. The ball seat is rotatably disposed in the second bore of the mandrel and defines an interior passage with a seat profile. First and second pistons are disposed in the annular space on opposing sides of the ball seat. These first and second pistons are movable along an axis of the tool in the annular space in opposing directions and are adapted to rotate the ball seat. Additionally, first and second biasing members are disposed in the annular space and bias the first and second pistons toward one another to reset the ball seat in the absence of pressure.

Resettable ball seat for hydraulically actuating tools

A downhole tool has a housing, a mandrel, a seat, and a piston. The housing defines a first bore, and the mandrel is movably disposed in the first bore and defines a second bore. The mandrel has first and second mandrel sections or upper and lower cones, and the first mandrel section defines a cross-port communicating the second bore with an annular space between the mandrel and the housing. The seat is disposed in the first bore of the housing between the first and second mandrel sections. The seat is movable to a constricted state in the first bore to catch a dropped ball and is movable to an expanded state in the first bore to pass a dropped ball. The piston is disposed in the annular space and at least temporality supports the seat in its constricted state.

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Houston, TX, United States of America

Candido Castro