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US 8,555,988 B2Granted
Low equivalent circulation density setting tool
AssigneeHalliburton Energy Services, Inc.
InventorsBrock Watson, Daniel Moeller, Kevin J. Miller
Life of this patent
Estimating the term…
Abstract
A downhole oilfield tool assembly is provided. The tool assembly comprises a mandrel, a valve oriented to block downwards flow through the mandrel in a closed position, a first piston located above the valve and at least partly around an outside of the mandrel. The first piston is configured to develop motive force from a pressure differential between an interior of the mandrel and an exterior of the downhole oilfield tool assembly.
Claims15
A downhole oilfield tool assembly, comprising:
- a mandrel;
- a valve oriented to block downwards flow through the mandrel in a closed position, wherein the valve comprises:
- a setting sleeve,
- a collet mandrel rotatably disposed concentric with the mandrel, and a biasing mechanism, wherein in a first rotational position of the collet mandrel relative to the mandrel, the collet mandrel is locked against rotational motion relative to the setting sleeve and the valve is in an open position, and wherein in a second rotational position of the collet mandrel relative to the mandrel, the biasing mechanism is configured to axially translate a flapper prop and transition the valve to the closed position, wherein the second rotational position is rotationally offset about a longitudinal axis of the collet mandrel from the first rotational position;
- and
- a first piston located above the valve and positioned at least partly around an outside of the mandrel, wherein the first piston is configured to develop motive force from a pressure differential between an interior of the mandrel and an exterior of the downhole oilfield tool assembly when the valve is in the closed position.
3 more elements
A method of setting a liner inside a casing, comprising:
- rotating a collet mandrel of a valve from a first rotational position to a second rotational position, wherein the second rotational position is rotationally offset about a longitudinal axis of the collet mandrel from the first rotational position, and wherein the valve comprises:
- a mandrel;
- a setting sleeve,
- the collet mandrel rotatably disposed concentric with the mandrel, and
- a biasing mechanism, wherein in the first rotational position of the collet mandrel relative to the mandrel, the collet mandrel is locked against rotational motion relative to the setting sleeve and the valve is in an open position;
- axially translating a flapper prop in response to a force applied by the biasing mechanism in response to the collet mandrel being rotated to the second rotational position;
- transitioning the valve from the open position to a closed position in response to axially translating the flapper prop;
- blocking downwards flow through a setting tool when the valve is in the closed position;
- developing a pressure differential between an interior of the setting tool above the valve and an exterior of the setting tool when the valve is in the closed position;
- and
- setting the liner inside the casing using a first piston in response to the pressure differential, wherein the first piston is positioned at least partly around an outside of the mandrel, wherein the first piston is configured to develop motive force from the pressure differential between the interior of the setting tool and an exterior of the setting tool assembly when the valve is in the closed position.
8 more elements
Dependencies are inferred from the claim text.