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US 9,267,339 B2Granted
Downhole device
AssigneeWireline Engineering Limited
InventorNeil Robert Hall
Life of this patent
Estimating the term…
Abstract
A downhole device for use in a deviated well is described. The downhole device comprises a device body having a longitudinal axis, the device body adapted to be connected to the end of a tool string and a guide member. At least a portion of the guide member is moveable with respect to the device body, one of said moveable portions defining the leading end of the device.
Claims38
A downhole device comprising:
- a device body having a longitudinal axis, the device body adapted to be connected to an end of a tool string;
- and
- a guide member comprising a first portion and a second portion, the first portion being carried by the second portion;
- wherein the first portion of the guide member comprises a roller unit having a greater transverse outer dimension than the second portion at least substantially around the device body longitudinal axis and is rotatable with respect to the device body about an axis perpendicular to the longitudinal axis, the guide member first portion defining the leading end of the device, and wherein the second portion extends along the device body longitudinal axis.
1 more element
A downhole device comprising:
- a device body having a longitudinal axis, the device body adapted to be connected to an end of a tool string;
- and
- a guide member comprising a first portion and a second portion, the first portion being carried by the second portion;
- wherein the first portion of the guide member comprises a roller unit having a greater transverse outer dimension than the second portion around the device body longitudinal axis and is rotatable with respect to the device body about an axis perpendicular to the longitudinal axis, the guide member first portion defining the leading end of the device, and wherein the second portion extends along the device body longitudinal axis,
- the guide member first portion being adapted to self-align with the respect to the device body, and the guide member first portion being weighted so as to self-align.
2 more elements
A downhole device comprising:
- a device body having a longitudinal axis, the device body adapted to be connected to an end of a tool string;
- and
- a guide member comprising a first portion and a second portion, the first portion being carried by the second portion;
- wherein the first portion of the guide member comprises a roller unit having a greater transverse outer dimension than the second portion around the device body longitudinal axis and is rotatable with respect to the device body about an axis perpendicular to the longitudinal axis, the guide member first portion defining the leading end of the device, and wherein the second portion extends along the device body longitudinal axis,
- the guide member first portion being adapted to self-align with the respect to the device body, and the guide member first portion self-aligns by rotation of the guide member second portion with respect to the device body.
2 more elements
A downhole device comprising:
- a device body having a longitudinal axis, the device body adapted to be connected to an end of a tool string;
- and
- a guide member comprising a first portion and a second portion, the first portion being carried by the second portion;
- wherein the first portion of the guide member comprises a roller unit having a greater transverse outer dimension than the second portion around the device body longitudinal axis and is rotatable with respect to the device body about an axis perpendicular to the longitudinal axis, the guide member first portion defining the leading end of the device, and wherein the second portion extends along the device body longitudinal axis,
- wherein the guide member first portion comprises a pair of rollers and an axle and the rollers and the axle are a unitary component.
2 more elements
A downhole device comprising:
- a device body having a longitudinal axis, the device body adapted to be connected to an end of a tool string;
- and
- a guide member comprising a first portion and a second portion, the first portion being carried by the second portion;
- wherein the first portion of the guide member comprises a roller unit having a greater transverse outer dimension than the second portion around the device body longitudinal axis and is rotatable with respect to the device body about an axis perpendicular to the longitudinal axis, the guide member first portion defining the leading end of the device, and wherein the second portion extends along the device body longitudinal axis,
- and wherein the guide member first portion comprises a pair of rollers and an axle, each roller comprises a projecting part, and the projecting part of each roller is an eccentrically-shaped part.
2 more elements
A downhole device comprising:
- a device body having a longitudinal axis, the device body adapted to be connected to an end of a tool string;
- and
- a guide member comprising a first portion and a second portion, the first portion being carried by the second portion;
- wherein the first portion of the guide member comprises a roller unit having a greater transverse outer dimension than the second portion around the device body longitudinal axis and is rotatable with respect to the device body about an axis perpendicular to the longitudinal axis, the guide member first portion defining the leading end of the device, and wherein the second portion extends along the device body longitudinal axis,
- wherein the guide member second portion has a longitudinal axis which coincides with the device body longitudinal axis,
- and wherein the guide member second portion is adapted to deflect away from the device body longitudinal axis.
3 more elements
A downhole device comprising:
- a device body having a longitudinal axis, the device body adapted to be connected to an end of a tool string;
- and
- a guide member comprising a first portion and a second portion, the first portion being carried by the second portion;
- wherein the first portion of the guide member comprises a roller unit having a greater transverse outer dimension than the second portion around the device body longitudinal axis and is rotatable with respect to the device body about an axis perpendicular to the longitudinal axis, the guide member first portion defining the leading end of the device, and wherein the second portion extends along the device body longitudinal axis,
- wherein the guide member second portion has a longitudinal axis which coincides with the device body longitudinal axis,
- and wherein the guide member second portion is connected to the device body by means of a universal joint.
3 more elements
A downhole device comprising:
- a device body having a longitudinal axis, the device body adapted to be connected to an end of a tool string;
- and
- a guide member comprising a first portion and a second portion, the first portion being carried by the second portion;
- wherein the first portion of the guide member comprises a roller unit having a greater transverse outer dimension than the second portion around the device body longitudinal axis and is rotatable with respect to the device body about an axis perpendicular to the longitudinal axis, the guide member first portion defining the leading end of the device, and wherein the second portion extends along the device body longitudinal axis,
- and wherein the device body comprises a roller sub, roller skate or roller bogie facilitating translation of the tool string through a well bore.
2 more elements
A method of guiding a tool string through a wellbore, the method comprising the steps of:
- providing a downhole device at the end of a tool string;
- translating the tool string through a wellbore, the leading end of the device being defined by a guide member portion comprising a first portion and a second portion, the first portion being carried by the second portion, the guide member portion being moveable with respect to a device body, the device body having a longitudinal axis,
- wherein the first portion of the guide member comprises a roller unit having a greater transverse outer dimension than the second portion at least substantially around the device body longitudinal axis and is adapted to rotate with respect to the device body about an axis which is perpendicular to the device body longitudinal axis, the guide member first portion defining the leading end of the device, and wherein the guide member second portion extends along the device body longitudinal axis.
Dependencies are inferred from the claim text.