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  2. Sucker rod - Wikipedia

    en.wikipedia.org/wiki/Sucker_rod

    The line of sucker rods is represented in this diagram by the solid black line in the center of the well. A sucker rod is a steel rod, typically between 7 and 9 metres (25 and 30 ft) in length, and threaded at both ends, used in the oil industry to join together the surface and downhole components of a reciprocating piston pump installed in an oil well.

  3. Drill string - Wikipedia

    en.wikipedia.org/wiki/Drill_string

    Drill pipe makes up the majority of the drill string back up to the surface. Each drill pipe comprises a long tubular section with a specified outside diameter (e.g. 3 1/2 inch, 4 inch, 5 inch, 5 1/2 inch, 5 7/8 inch, 6 5/8 inch). At each end of the drill pipe, tubular larger-diameter portions called the tool joints are located.

  4. Hydraulic cylinder - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_cylinder

    Small-bore cylinders usually have 4 tie rods, and large bore cylinders may require as many as 16 or 20 tie rods in order to retain the end caps under the tremendous forces produced. Tie rod style cylinders can be completely disassembled for service and repair, and they are not always customizable. [11]

  5. Crosshead - Wikipedia

    en.wikipedia.org/wiki/Crosshead

    A crosshead as part of a reciprocating piston and slider-crank linkage mechanism. Cylindrical trunk guide Hudswell Clarke Nunlow; crosshead and two slide bars. In mechanical engineering, a crosshead [1] is a mechanical joint used as part of the slider-crank linkages of long reciprocating engines (either internal combustion or steam) and reciprocating compressors [2] to eliminate sideways force ...

  6. Ice drilling - Wikipedia

    en.wikipedia.org/wiki/Ice_drilling

    The cutting tool is mounted at the bottom of the drill string (typically connected metal rods [note 1]), and some means of giving it kinetic energy must be provided. A tripod erected over the hole allows a pulley to be set up, and a cable can then be used to repeatedly raise and drop the tool. This method is known as cable tool drilling.

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