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US 12,674,377 B2Granted
Downhole tool
AssigneeOdfjell Technology Invest Ltd
InventorBruce McGarian
Life of this patent
Estimating the term…
Abstract
A downhole tool, comprising: an inner body, having first and second connections in a drill string to convey fluid from immediately upper to immediately lower components. The inner body defines a flow bore which communicates between the first and second connections. An outer body disposed around at least part of the inner body is axially movable with respect to the inner body, in a direction which is parallel or substantially parallel with a longitudinal axis of the tool, such that introduction of pressurised fluid into pressure chambers tends to drive the outer body axially with respect to the inner body. The tool further comprises a component which is activated or operated by axial movement of the outer body with respect to the inner body.
Claims20
A downhole tool, comprising:
- an inner body, having a first connection to connect the tool to an immediately upper component in a drill string and to receive fluid from the immediately upper component, and a second connection to connect the tool to an immediately lower component in a drill string and to deliver fluid to the immediately lower component, the inner body defining a flow bore therealong which communicates between the first connection and the second connection;
- an outer body disposed around at least a part of the inner body;
- a plurality of first protrusions extending outwardly from the inner body;
- a plurality of second protrusions extending inwardly from the outer body;
- a plurality of pressure chambers, each pressure chamber at least partly defined on an inner side by the inner body and on an outer side by the outer body, and at least partly defined on upper and lower sides by one of the first protrusions and one of the second protrusions;
- and
- a plurality of first flow ports, each of the first flow ports allowing fluid communication between the flow bore and one of the pressure chambers, wherein:
- the outer body is axially movable with respect to the inner body, in a direction which is parallel or substantially parallel with a longitudinal axis of the tool, such that introduction of pressurised fluid into the pressure chambers tends to drive the outer body axially with respect to the inner body;
- one or more blades or cutters which are driven radially inwardly or outwardly by axial movement of the outer body with respect to the inner body, and wherein the blades or cutters are arranged to be driven axially with respect to the inner body by the outer body;
- a guide arrangement which guides the blades or cutters to move radially inwardly or outwardly with respect to the inner body when the blades or cutters move axially with respect to the inner body;
- and
- a blade housing, which is connected to the outer body, and is connected to one or more travelling blocks, wherein each blade or cutter can slide radially inwardly and outwardly with respect to the one or more travelling blocks, but is fixed to the one or more travelling blocks in the axial direction.
9 more elements
A downhole tool, comprising:
- an inner body, having a first connection to connect the tool to an immediately upper component in a drill string and to receive fluid from the immediately upper component, and a second connection to connect the tool to an immediately lower component in a drill string and to deliver fluid to the immediately lower component, the inner body defining a flow bore therealong which communicates between the first connection and the second connection;
- an outer body disposed around at least a part of the inner body;
- a plurality of first protrusions extending outwardly from the inner body;
- a plurality of second protrusions extending inwardly from the outer body;
- a plurality of pressure chambers, each pressure chamber at least partly defined on an inner side by the inner body and on an outer side by the outer body, and at least partly defined on upper and lower sides by one of the first protrusions and one of the second protrusions;
- and
- a plurality of first flow ports, each of the first flow ports allowing fluid communication between the flow bore and one of the pressure chambers, wherein:
- the outer body is axially movable with respect to the inner body, in a direction which is parallel or substantially parallel with a longitudinal axis of the tool, such that introduction of pressurised fluid into the pressure chambers tends to drive the outer body axially with respect to the inner body;
- and
- the tool further comprises a component which is activated or operated by axial movement of the outer body with respect to the inner body,
- wherein at least one of the pressure chambers is below the component, and at least one of the pressure chambers is above the component.
8 more elements
A downhole tool, comprising:
- an inner body, having a first connection to connect the tool to an immediately upper component in a drill string and to receive fluid from the immediately upper component, and a second connection to connect the tool to an immediately lower component in a drill string and to deliver fluid to the immediately lower component, the inner body defining a flow bore therealong which communicates between the first connection and the second connection;
- an outer body disposed around at least a part of the inner body;
- a plurality of first protrusions extending outwardly from the inner body;
- a plurality of second protrusions extending inwardly from the outer body;
- a plurality of pressure chambers, each pressure chamber at least partly defined on an inner side by the inner body and on an outer side by the outer body, and at least partly defined on upper and lower sides by one of the first protrusions and one of the second protrusions;
- and
- a plurality of first flow ports, each of the first flow ports allowing fluid communication between the flow bore and one of the pressure chambers, wherein:
- the outer body is axially movable with respect to the inner body, in a direction which is parallel or substantially parallel with a longitudinal axis of the tool, such that introduction of pressurised fluid into the pressure chambers tends to drive the outer body axially with respect to the inner body;
- and
- the tool further comprises a component which is activated or operated by axial movement of the outer body with respect to the inner body, wherein:
- the tool further comprises a blade carrier, which is connected to the inner body and defines a pocket for each blade;
- each blade comprises a blade body having an inclined face at its top end;
- and
- at the top end of each pocket, a corresponding inclined face is formed, which is set at the same, or substantially the same, angle as the inclined face at the top end of the corresponding blade body.
11 more elements
Dependencies are inferred from the claim text.