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  2. Mud motor - Wikipedia

    en.wikipedia.org/wiki/Mud_motor

    A mud motor (or drilling motor) is a progressive cavity positive displacement pump (PCPD) placed in the drill string to provide additional power to the bit while drilling. The PCPD pump uses drilling fluid (commonly referred to as drilling mud, or just mud) to create eccentric motion in the power section of the motor which is transferred as ...

  3. Rotary steerable system - Wikipedia

    en.wikipedia.org/wiki/Rotary_steerable_system

    In other words, a tool designed to drill directionally with continuous rotation from the surface, eliminating the need to "slide" a mud motor. The first known patent application is from Christopher G. Cross in 1873 for "Drills for Boring Artesian Wells", [ 1 ] followed in 1884 by the brothers Morris and Clarence Baker for a "Machine for ...

  4. Directional drilling - Wikipedia

    en.wikipedia.org/wiki/Directional_drilling

    Combined, these survey tools and BHA designs made directional drilling possible, but it was perceived as arcane. The next major advance was in the 1970s, when downhole drilling motors (aka mud motors, driven by the hydraulic power of drilling mud circulated down the drill string) became common. These allowed the drill bit to continue rotating ...

  5. Measurement while drilling - Wikipedia

    en.wikipedia.org/wiki/Measurement_while_drilling

    Mud flow volume; Mud Motors. Use of this information can allow the operator to drill the well more efficiently, and to ensure that the MWD tool and any other downhole tools, such as a mud motor, rotary steerable systems, and LWD tools, are operated within their technical specifications to prevent tool failure. This information is also valuable ...

  6. Directional boring - Wikipedia

    en.wikipedia.org/wiki/Directional_boring

    Directional boring machine. Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig.

  7. List of abbreviations in oil and gas exploration and production

    en.wikipedia.org/wiki/List_of_abbreviations_in...

    MT – motor temperature; DMT parameter for ESP motor; MTO – material take-off; MTT – MTT multi-isotope trace tool; M/U – make up; MUDmud log; MUDT – mud temperature log; MuSol – mutual solvent; MVB – master valve block on christmas tree; MVC – minimum volume commitment; MW – mud weight; MWD – measurement while drilling

  8. List of defunct hard disk manufacturers - Wikipedia

    en.wikipedia.org/wiki/List_of_defunct_hard_disk...

    HDD assets sold to Honeywell [68] [69] GS Magicstor: China: 2003? Dissolution [70] Hewlett-Packard: United States: 1979: 1996: Exited the HDD business: Manufactured the first 1.3-inch HDDs [71] [72] HGST: United States: 2003: 2018: Acquired by Western Digital: Hitachi's HDD business after acquiring IBM's HDD assets: Hitachi: United States: 1967 ...

  9. List of components of oil drilling rigs - Wikipedia

    en.wikipedia.org/wiki/List_of_components_of_oil...

    Suction line (#3) is an intake line for the mud pump to draw drilling fluid from the mud tanks. Swivel (#18) is the top end of the kelly that allows the rotation of the drill string without twisting the block. Traveling block (#11) is the moving end of the block and tackle. Together, they give a significant mechanical advantage for lifting.