Bit guidance device and method
First Claim
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1. A drill bit guidance device comprising:
- a collar member, a piston means, said piston means having a paddle member, said paddle member pivotably joined to said collar member, said collar member having a fluid conduit, said fluid conduit communicating with said piston means, a gate means, said gate means within said collar member, said gate means oscillatable around said fluid conduit, a fluid supply means, said fluid supply means communicating with said fluid conduit whereby said fluid from said supply means is directed through said fluid conduit to said gate means to allow said piston means to pivot said paddle member.
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Abstract
The invention disclosed herein provides a mechanism and method for positive drill bit guidance during well drilling operations. The guidance device includes a control arm or paddle which, due to hydraulic pressure, pivots to steer the drill bit towards its target area. As the paddle applies pressure to the wall of the well, the drill bit is then turned from the contacted area of the well wall in the desired direction.
222 Citations
13 Claims
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1. A drill bit guidance device comprising:
- a collar member, a piston means, said piston means having a paddle member, said paddle member pivotably joined to said collar member, said collar member having a fluid conduit, said fluid conduit communicating with said piston means, a gate means, said gate means within said collar member, said gate means oscillatable around said fluid conduit, a fluid supply means, said fluid supply means communicating with said fluid conduit whereby said fluid from said supply means is directed through said fluid conduit to said gate means to allow said piston means to pivot said paddle member.
- View Dependent Claims (2, 3, 4, 5, 6)
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7. A drill bit guidance device comprising:
- a collar member, a piston means, said piston means having a paddle member, said paddle member pivotably joined to said collar member, said paddle member pivotable from a closed to an open position, said piston means including a gate means controlled by centrifugal force, said piston means also including fluid entry and exit ports, said collar member having a fluid conduit therethrough, said gate means oscillatable around said fluid conduit, a fluid supply means, said fluid supply means communicating with said fluid conduit whereby a fluid supply directed through said fluid conduit to said piston means pivots said paddle member to an open position.
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8. A method of guiding a drill bit mechanism comprising:
- attaching a collar member having a piston means, fluid conduit with gate means and pivotable paddle to a drill bit, rotating said drill bit to form a well, forcing fluid through said collar member to the piston means, oscillating the gate means within the collar member around the fluid conduit, pivoting the paddle, contacting the well wall with the paddle to thereby cause the drill bit to carom from the contacted wall.
- View Dependent Claims (9, 10, 11, 12)
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13. A method of guiding a drill bit comprising the steps of attaching a collar having a fluid conduit, a piston means with a gate means and a pivotable paddle to a drill bit, rotating said drill bit at a moderate speed to form a well, forcing fluid through the collar member to the gate means, reducing the rotational speed of the drill bit, oscillating the gate means around the fluid conduit, opening the gate means, urging the piston means toward the paddle, pivoting the paddle towards the wall of the well, contact the wall with the paddle to guide the drill bit and venting fluid to the well.
Specification