Method and apparatus for directional actuation
First Claim
1. A variable orientation downhole actuation tool disposed near the end of a down hole tube, includinga first part having a respective axis and joined to the down hole tube whose orientation is fixed relative to the down hole tube, and a second part having a respective axis and fixed by articulation to the first part, whose orientation may be adjusted relative to the axis of the first part, the orientation of the second part being adjustable so as to vary a first angle included between the first part and the second part, a second angle through which the second part is rotated relative to the axis of the first part, and a third angle through which the second part is rotated about the axis of the second part, these three angles being independently adjustable, the articulation between the first part and the second part including:
- a first actuating member capable of substantially axial movement relative to the first part, and a first following member, which the first actuating member bears against such that axial movement of the first actuating member causes a substantially transverse movement of the first following member, a second actuating member capable of substantially axial movement relative to the first part, and a second following member, which the second actuating member bears against such that axial movement of the second actuating member causes a substantially transverse movement of the second following member independently in an orthogonal direction to the transverse movement of the first following member.
1 Assignment
0 Petitions
Accused Products
Abstract
A variable orientation downhole actuation tool is made up of a first part which is adapted to be fixed with respect to the end of a down hole tube, and a second part which is adjustable with respect to the first part. The first and second parts are adjustable with respect to each other in any two of the three Euler angles possible angles, that is, the included angle or bend of a respective reference axis, the plane of included angle, or direction, and the rotation of the first body about its reference axis. It may also include a third part such that the third part is adjusted by at least one of the possible angles with respect to the second part, and the second part is adjusted by a further of the possible angles with respect to the first part. A passageway is provided between the first and second parts for the conveyance of material, gas, liquid, solid or some combination. A joint is provided for coupling the first part to the second part, said joint permitting the said adjustment of the first part with respect to the second part.
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Citations
11 Claims
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1. A variable orientation downhole actuation tool disposed near the end of a down hole tube, including
a first part having a respective axis and joined to the down hole tube whose orientation is fixed relative to the down hole tube, and a second part having a respective axis and fixed by articulation to the first part, whose orientation may be adjusted relative to the axis of the first part, the orientation of the second part being adjustable so as to vary a first angle included between the first part and the second part, a second angle through which the second part is rotated relative to the axis of the first part, and a third angle through which the second part is rotated about the axis of the second part, these three angles being independently adjustable, the articulation between the first part and the second part including: -
a first actuating member capable of substantially axial movement relative to the first part, and a first following member, which the first actuating member bears against such that axial movement of the first actuating member causes a substantially transverse movement of the first following member, a second actuating member capable of substantially axial movement relative to the first part, and a second following member, which the second actuating member bears against such that axial movement of the second actuating member causes a substantially transverse movement of the second following member independently in an orthogonal direction to the transverse movement of the first following member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A variable orientation drill comprising:
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a down-hole tube receivable in a well and having a lower end;
a variable orientation tool at said lower end and including a first part secured to said lower end of said down-hole tube, an articulation secured to said first part and a second part secured to said articulation and adjustable independently of said first part to vary an angle included between said parts, an angle through which said second part is rotated relative to an axis of said first part and an angle through which said second part is rotated about an axis of the second part;
a drill bit on said second part and rotatable about a drill bit axis independently of orientation of said articulation; and
a pair of axially movable members on said variable orientation tool each displacing respective follower members for independently displacing said second member relative to said first member in two mutually orthogonal transverse directions at said articulation.
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Specification