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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. Screw-propelled vehicle - Wikipedia

    en.wikipedia.org/wiki/Screw-propelled_vehicle

    A screw-propelled vehicle A screw-propelled vehicle is a land or amphibious vehicle designed to cope with difficult terrain, such as snow, ice, mud, and swamp. Such vehicles are distinguished by being moved by the rotation of one or more auger-like cylinders fitted with a helical flange that engages with the medium through or over which the vehicle is moving. They have been called Archimedes ...

  4. 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 ...

  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. Mud agitator - Wikipedia

    en.wikipedia.org/wiki/Mud_agitator

    A mud agitator is used in surface mud systems to suspend solids and maintain homogeneous mixture throughout the system. A mechanical agitator is driven by an explosion-proof motor, coupled to a gear box that drives the impeller shaft. The impellers (turbines) transform mechanical power into fluid circulation or agitation. The objective is to ...

  7. Coiled tubing - Wikipedia

    en.wikipedia.org/wiki/Coiled_tubing

    Instead of rotating the drill bit by using a rotary table or top drive at the surface, it is turned by a downhole MUD MOTOR, powered by the motion of drilling fluid pumped from surface. Drilling which is powered by a mud motor instead of a rotating pipe is generally called slide drilling. [1] Typically the mud motor will be one component of a ...

  8. Costco membership growth 'robust,' even amid fee increase ...

    www.aol.com/costco-membership-growth-robust-even...

    More shoppers came to Costco stores in the three months ending Nov. 24, just days ahead of Black Friday. The company saw sales up 7.5% over last year.

  9. 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 ...

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