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Class Information
Number: 175/74
Name: Boring or penetrating the earth > Means traveling with tool to constrain tool to bore along curved path > Sectional guide or shaft having means to lock sections in angular relation while boring
Description: Apparatus wherein the means for causing the tool to drill a curved bore comprises a tool shaft or a means adapted to direct the course of the tool which is made up of units or segments, generally pivotally connected to one another, movable to be positioned at an angle to one another in the direction of the bore axis and means engageable with the segments to hold them in their angularly related position.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7360609 |
Directional drilling apparatus |
Apr. 22, 2008 |
| 7311157 |
Tool for controlling rotation of a bottom hole assembly with respect to a drillstring |
Dec. 25, 2007 |
| 7287607 |
Directional drilling apparatus |
Oct. 30, 2007 |
| 7237624 |
Electronic roll indexing compensation in a drilling system and method |
Jul. 3, 2007 |
| 7234544 |
Drill tool shaft-to-housing locking device |
Jun. 26, 2007 |
| 7219727 |
Wear resistant tubular connection |
May. 22, 2007 |
| 7216726 |
Downhole fluid-tight flexible joint |
May. 15, 2007 |
| 7195083 |
Three dimensional steering system and method for steering bit to drill borehole |
Mar. 27, 2007 |
| 7104345 |
Downhole rotatable-shaft connector assembly and method |
Sep. 12, 2006 |
| 6962214 |
Rotary seal for directional drilling tools |
Nov. 8, 2005 |
| 6942044 |
Three-dimensional steering tool for controlled downhole extended-reach directional drilling |
Sep. 13, 2005 |
| 6848518 |
Steerable underreaming bottom hole assembly and method |
Feb. 1, 2005 |
| 6843332 |
Three dimensional steerable system and method for steering bit to drill borehole |
Jan. 18, 2005 |
| 6837315 |
Rotary steerable drilling tool |
Jan. 4, 2005 |
| 6827159 |
Steerable horizontal subterranean drill bit having an offset drilling fluid seal |
Dec. 7, 2004 |
| 6814168 |
Steerable horizontal subterranean drill bit having elevated wear protector receptacles |
Nov. 9, 2004 |
| 6810972 |
Steerable horizontal subterranean drill bit having a one bolt attachment system |
Nov. 2, 2004 |
| 6810973 |
Steerable horizontal subterranean drill bit having offset cutting tooth paths |
Nov. 2, 2004 |
| 6810971 |
Steerable horizontal subterranean drill bit |
Nov. 2, 2004 |
| 6799646 |
Adjustable deflecting sub |
Oct. 5, 2004 |
| 6761231 |
Rotary driven drilling hammer |
Jul. 13, 2004 |
| 6708783 |
Three-dimensional steering tool for controlled downhole extended-reach directional drilling |
Mar. 23, 2004 |
| 6705415 |
Directional drilling apparatus |
Mar. 16, 2004 |
| 6659201 |
Method and apparatus for directional actuation |
Dec. 9, 2003 |
| 6607044 |
Three dimensional steerable system and method for steering bit to drill borehole |
Aug. 19, 2003 |
| 6598687 |
Three dimensional steerable system |
Jul. 29, 2003 |
| 6595303 |
Rotary steerable drilling tool |
Jul. 22, 2003 |
| 6571888 |
Apparatus and method for directional drilling with coiled tubing |
Jun. 3, 2003 |
| 6554083 |
Adjustable bent housing sub for a mud motor |
Apr. 29, 2003 |
| 6550548 |
Rotary steering tool system for directional drilling |
Apr. 22, 2003 |
| 6550818 |
Bent sub assembly for directional drilling |
Apr. 22, 2003 |
| 6543554 |
Adjustable housing for a mud motor |
Apr. 8, 2003 |
| 6543553 |
Apparatus for use in drilling oil and gas production wells or water injection wells |
Apr. 8, 2003 |
| 6516901 |
Adjustable orienting sub |
Feb. 11, 2003 |
| 6470974 |
Three-dimensional steering tool for controlled downhole extended-reach directional drilling |
Oct. 29, 2002 |
| 6470977 |
Steerable underreaming bottom hole assembly and method |
Oct. 29, 2002 |
| 6464022 |
Mobile horizontal directional boring apparatus and method for use in boring from existing utility manholes |
Oct. 15, 2002 |
| 6364034 |
Directional drilling apparatus |
Apr. 2, 2002 |
| 6325162 |
Bit connector |
Dec. 4, 2001 |
| 6244345 |
Lockable swivel apparatus and method |
Jun. 12, 2001 |
| 6109372 |
Rotary steerable well drilling system utilizing hydraulic servo-loop |
Aug. 29, 2000 |
| 6082470 |
Directional drilling system and apparatus |
Jul. 4, 2000 |
| 6073707 |
Downhole sub with kick pad for directional drilling |
Jun. 13, 2000 |
| 5957222 |
Directional drilling system |
Sep. 28, 1999 |
| 5941323 |
Steerable directional drilling tool |
Aug. 24, 1999 |
| 5899281 |
Adjustable bend connection and method for connecting a downhole motor to a bit |
May. 4, 1999 |
| 5875859 |
Device for controlling the drilling direction of drill bit |
Mar. 2, 1999 |
| 5836406 |
Adjustable stabilizer for directional drilling |
Nov. 17, 1998 |
| 5775444 |
Drill string orienting motor |
Jul. 7, 1998 |
| 5735357 |
Apparatus for and method of directional drilling |
Apr. 7, 1998 |
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