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Class Information
Number: 175/73
Name: Boring or penetrating the earth > Means traveling with tool to constrain tool to bore along curved path
Description: Apparatus comprising means carried by or movable with a tool while drilling to cause the tool to drill a bore or segment of a bore having a nonlinear axis.










Sub-classes under this class:

Class Number Class Name Patents
175/76 Axially spaced opposed bore wall engaging guides 161
175/75 Normally curved guide or shaft 99
175/74 Sectional guide or shaft having means to lock sections in angular relation while boring 149


Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8701795 Adjustable rotary steerable system Apr. 22, 2014
8689906 Methods and apparatus for reducing stick-slip Apr. 8, 2014
8689905 Drilling assembly with steering unit integrated in drilling motor Apr. 8, 2014
8672056 System and method for controlling steering in a rotary steerable system Mar. 18, 2014
8662201 End loaded beacon housing with a side access door Mar. 4, 2014
8640793 Dynamic steering tool Feb. 4, 2014
8596382 Magnetic ranging while drilling using an electric dipole source and a magnetic field sensor Dec. 3, 2013
8590636 Rotary steerable drilling system Nov. 26, 2013
8579044 Bending of a shaft of a steerable borehole drilling tool Nov. 12, 2013
8567526 Wellbore steering based on rock stress direction Oct. 29, 2013
8567527 System and method for drilling a borehole Oct. 29, 2013
8567528 Apparatus and method for directional drilling Oct. 29, 2013
8561725 Ultra-hard drill collar Oct. 22, 2013
8550185 Stochastic bit noise Oct. 8, 2013
8550186 Rotary steerable tool employing a timed connection Oct. 8, 2013
8534385 Steering head Sep. 17, 2013
8534380 System and method for directional drilling a borehole with a rotary drilling system Sep. 17, 2013
8534384 Drill bits with cutters to cut high side of wellbores Sep. 17, 2013
8534388 Dual pipe for increased fluid flow Sep. 17, 2013
8528644 Apparatus and method for milling casing in jet drilling applications for hydrocarbon production Sep. 10, 2013
8522897 Lead the bit rotary steerable tool Sep. 3, 2013
8517121 Steerable drilling system Aug. 27, 2013
8499857 Downhole jack assembly sensor Aug. 6, 2013
8485281 Equipment for drilling secant holes Jul. 16, 2013
8474552 Piston devices and methods of use Jul. 2, 2013
8464811 Steerable system Jun. 18, 2013
8453765 Apparatus for directional control of a drilling tool Jun. 4, 2013
8448721 Directional drilling system May. 28, 2013
8448722 Drilling stabilizer May. 28, 2013
8408333 Steer systems for coiled tubing drilling and method of use Apr. 2, 2013
8376067 System and method employing a rotational valve to control steering in a rotary steerable system Feb. 19, 2013
8360174 Lead the bit rotary steerable tool Jan. 29, 2013
8333254 Steering mechanism with a ring disposed about an outer diameter of a drill bit and method for drilling Dec. 18, 2012
8302704 Steering head Nov. 6, 2012
8302705 Steering system Nov. 6, 2012
8286729 Real time misalignment correction of inclination and azimuth measurements Oct. 16, 2012
8276687 Steering head Oct. 2, 2012
8267172 System and method for determining position within a wellbore Sep. 18, 2012
8240399 Drill bit with an adjustable steering device Aug. 14, 2012
8232892 Method and system for operating a well service rig Jul. 31, 2012
8205688 Lead the bit rotary steerable system Jun. 26, 2012
8201644 Dual pipe for increased fluid flow Jun. 19, 2012
8196677 Horizontal drilling system Jun. 12, 2012
8172006 Pulsed electric rock drilling apparatus with non-rotating bit May. 8, 2012
8157024 Ball piston steering devices and methods of use Apr. 17, 2012
8157002 Slip ring apparatus for a rotary steerable tool Apr. 17, 2012
8141658 Tilted drive sub Mar. 27, 2012
8104548 Shape memory alloy actuated steerable drilling tool Jan. 31, 2012
8087479 Drill bit with an adjustable steering device Jan. 3, 2012
8011447 Automated drill string position survey Sep. 6, 2011

1 2 3 4 5 6 7 8 9










 
 
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