Wellbore directional steering tool
First Claim
1. An apparatus for selectively controlling the direction of a well bore comprising:
- a mandrel rotatable about a rotation axis;
a direction controller comprising at least two parts configured to apply a force to said mandrel with a component perpendicular to the said rotation axis;
a housing having an eccentric longitudinal bore forming a weighted side and being configured to freely rotate under gravity; and
a driver for selectively varying the angle of the force relative to the weighted side of the housing about said rotation axis, the driver being configured to move the two parts independently of one another,
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Accused Products
Abstract
An apparatus for selectively controlling the direction of a well bore comprising a mandrel rotatable about a rotation axis; a direction controller means comprising at least two parts configured to apply a force to said mandrel with a component perpendicular to the said rotation axis; a housing having an eccentric longitudinal bore forming a weighted side and being configured to freely rotate under gravity; and a driver for selectively varying the angle of the force relative to the weighted side of the housing about said rotation axis, the driver being configured to move the two parts independently of one another.
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Citations
53 Claims
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1. An apparatus for selectively controlling the direction of a well bore comprising:
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a mandrel rotatable about a rotation axis;
a direction controller comprising at least two parts configured to apply a force to said mandrel with a component perpendicular to the said rotation axis;
a housing having an eccentric longitudinal bore forming a weighted side and being configured to freely rotate under gravity; and
a driver for selectively varying the angle of the force relative to the weighted side of the housing about said rotation axis, the driver being configured to move the two parts independently of one another, - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 15, 18, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 42, 46, 47)
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- 11. The apparatus of claim 11, wherein a first part of the direction controller comprises a first cam and a second part of the direction controller comprises a second cam, the driver being configured to move the first and second cams independently relative to one another.
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17. An apparatus for selectively controlling the direction of a wellbore, the apparatus comprising:
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a mandrel which is rotatably about a rotation axis;
a direction controller comprising at least one linear actuator configured to apply a force to said mandrel;
a housing having an eccentric longitudinal bore and being configured to freely rotate under gravity; and
a drive means for selectively varying the angle of the force relative to the weighted side of the housing about said rotation axis.
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39. An apparatus for selectively controlling the direction of a well bore comprising:
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a mandrel rotatable about a rotation axis;
a direction controller configured to apply a force to said mandrel wad a component perpendicular to the said rotation axis;
a housing having an eccentric longitudinal bore forming a weighted side and being configured to freely rotate under gravity a driver for selectively varying the angle of the direction of force about said rotation axis; and
a sensor assembly for sensing information about said geological strata which is being drilled.
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43. An apparatus for drilling a well bore, the apparatus comprising:
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a drilling member configured to drill in a predetermined drilling direction;
direction controller for controlling the drilling direction of said drilling member;
a sensor for determining at least a characteristic of the strata being drilled;
wherein said direction controller determines the drilling direction based on the data collected by said sensor. - View Dependent Claims (44, 45, 48, 49, 50, 51, 52, 53)
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Specification