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  2. Directional boring - Wikipedia

    en.wikipedia.org/wiki/Directional_boring

    Directional boring tooling includes the suite of drill bits or drill heads used during pilot hole operations, reamers and hole-openers used for hole enlargement, and swab tools which are used for hole conditioning and pullback. Tooling intended to navigate rock, or tougher formations, may use tungsten carbide alloys or polycrystalline diamond ...

  3. Rotary steerable system - Wikipedia

    en.wikipedia.org/wiki/Rotary_steerable_system

    Push-the-bit tools use pads on the outside of the tool which press against the well bore thereby causing the bit to press on the opposite side causing a direction change. Point-the-bit technologies cause the direction of the bit to change relative to the rest of the tool by bending the main shaft running through it.

  4. Directional drilling - Wikipedia

    en.wikipedia.org/wiki/Directional_drilling

    Directional drilling (or slant drilling) is the practice of drilling non-vertical bores. It can be broken down into four main groups: oilfield directional drilling, utility installation directional drilling, directional boring (horizontal directional drilling - HDD), and surface in seam (SIS), which horizontally intersects a vertical bore ...

  5. Bore Through Tough Concrete and Brick With These Masonry ...

    www.aol.com/lifestyle/bore-tough-concrete-brick...

    4-Cutter SDS+ Carbide Hammer Drill Bit Masonry Kit. If you plan on drilling through concrete with rebar, save yourself time and money by using these heavy-duty Milwaukee bits.

  6. Bottom hole assembly - Wikipedia

    en.wikipedia.org/wiki/Bottom_hole_assembly

    In this instance the drill collars provide the necessary weight on the bit. Type 2 uses heavy weight drill pipe as a transition between the drill collars and the drill pipe. Weight on bit is achieved by the drill collars. Type 3 uses the drill collars to achieve directional control. The heavy weight drill pipe applies the weight on the bit.

  7. StraightLine HDD - Wikipedia

    en.wikipedia.org/wiki/StraightLine_HDD

    US Patent 5231899 for a drilling rig breakout wrench system on August 3, 1993. [2] US Patent 5253721 for a directional boring head on October 19, 1993. [3] US Patent 5709276 for a multi-position directional drill on January 20, 1998. [4] US Patent 5921331 for a backreamer on July 13, 1999. [5]

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