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Class Information
Number: 175/61
Name: Boring or penetrating the earth > Processes > Boring curved or redirected bores
Description: Processes comprising drilling or forming a borehole in which the axis of the borehole is (1) curved or arcuate, (2) two straight line portions intersecting at an angle or (3) a straight line portion and a curved portion.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Patent Number Title Of Patent Date Issued
8701795 Adjustable rotary steerable system Apr. 22, 2014
8678109 Intelligent controlled process for well lateral coring Mar. 25, 2014
8672056 System and method for controlling steering in a rotary steerable system Mar. 18, 2014
8672055 Automated directional drilling apparatus and methods Mar. 18, 2014
8662201 End loaded beacon housing with a side access door Mar. 4, 2014
8659298 Advanced steering tool system, method and apparatus Feb. 25, 2014
8640792 Flexible directional drilling apparatus and related methods Feb. 4, 2014
8640793 Dynamic steering tool Feb. 4, 2014
8602097 Well assembly with a composite fiber sleeve for an opening Dec. 10, 2013
8602126 Directional drilling control apparatus and methods Dec. 10, 2013
8596385 System and method for determining incremental progression between survey points while drilling Dec. 3, 2013
8596386 System and method for drilling and completing lateral boreholes Dec. 3, 2013
8590636 Rotary steerable drilling system Nov. 26, 2013
8590638 Intelligent wellbore propagation system Nov. 26, 2013
8567526 Wellbore steering based on rock stress direction Oct. 29, 2013
8567528 Apparatus and method for directional drilling Oct. 29, 2013
8567527 System and method for drilling a borehole Oct. 29, 2013
8561719 Computerized boring system with bore head sensors Oct. 22, 2013
8561722 Methods of controllably milling a window in a cased wellbore using a pressure differential to cause movement of a mill Oct. 22, 2013
8556002 Steering component, steering assembly and method of steering a drill bit in a borehole Oct. 15, 2013
8550185 Stochastic bit noise Oct. 8, 2013
8544560 Drive mechanism Oct. 1, 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
8528644 Apparatus and method for milling casing in jet drilling applications for hydrocarbon production Sep. 10, 2013
8528662 Position indicator for drilling tool Sep. 10, 2013
8522897 Lead the bit rotary steerable tool Sep. 3, 2013
8517121 Steerable drilling system Aug. 27, 2013
8511377 Open hole non-rotating sleeve and assembly Aug. 20, 2013
RE44427 Apparatus for directional boring under mixed conditions Aug. 13, 2013
8505621 Well assembly with recesses facilitating branch wellbore creation Aug. 13, 2013
8474552 Piston devices and methods of use Jul. 2, 2013
8469117 Drill bits and methods of drilling curved boreholes Jun. 25, 2013
8467268 Pressure release encoding system for communicating downhole information through a wellbore to a surface location Jun. 18, 2013
8453759 Method of directing drilling pattern in curved tunnels, rock drilling rig, and software product Jun. 4, 2013
8453767 Angular offset PDC cutting structures Jun. 4, 2013
8448721 Directional drilling system May. 28, 2013
8434567 Borehole drilling apparatus, systems, and methods May. 7, 2013
8430187 Directional sidetrack well drilling system Apr. 30, 2013
8418782 Method and system for precise drilling guidance of twin wells Apr. 16, 2013
8408333 Steer systems for coiled tubing drilling and method of use Apr. 2, 2013
8393404 Downhole multiple bore rotary diverter apparatus Mar. 12, 2013
8393828 Boring machine steering system with force multiplier Mar. 12, 2013
8393413 Closed loop control bore hole drilling system Mar. 12, 2013
8381838 System and apparatus for directing the drilling of a well Feb. 26, 2013
8381839 Apparatus for directional drilling Feb. 26, 2013
8376066 Combination whipstock and completion deflector Feb. 19, 2013
8376067 System and method employing a rotational valve to control steering in a rotary steerable system Feb. 19, 2013
8374834 Statistical method for analyzing the performance of oilfield equipment Feb. 12, 2013
8360172 Steering device for downhole tools Jan. 29, 2013

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