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  2. Wellhead - Wikipedia

    en.wikipedia.org/wiki/Wellhead

    In exploration wells that are later abandoned, the wellhead may be recovered for refurbishment and re-use. Offshore, where a wellhead is located on the production platform it is called a surface wellhead, and if located beneath the water then it is referred to as a subsea wellhead or mudline wellhead. [2] [3] [4] [5]

  3. Pulled string painting - Wikipedia

    en.wikipedia.org/wiki/Pulled_string_painting

    Pulled string painting is a painting method using strings that have paint on them to which they are placed in a certain way and then pulled on top a painting material. [ 1 ] [ 2 ] Notes

  4. String art - Wikipedia

    en.wikipedia.org/wiki/String_art

    String art, created with thread and paper A string art representing a projection of the 8-dimensional 4 21 polytope Quadratic Béziers in string art: The end points (•) and control point (×) define the quadratic Bézier curve (⋯). The arc is a segment of a parabola.

  5. Production tubing - Wikipedia

    en.wikipedia.org/wiki/Production_tubing

    The production liner has the same function as a complete string of production casing. A typical casing arrangement in a well is shown in the diagram below. In this case, the surface casing is set to a depth of about 3,000 ft (910 m). Two intermediate strings are set in this well — a 13 + 3 ⁄ 8 in (340 mm) string and a 9 + 7 ⁄ 8 in (250 mm ...

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

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

    DISO – dual induction sonic log; DL – development license (United Kingdom), a type of onshore license issued before 1996; DLIST – dip-list log; DLL – dual laterolog (deep and shallow resistivity) DLS – dog-leg severity (directional drilling) DM – dry mate; DMA – dead-man anchor; DMAS – dead-man auto-shear DMAS

  7. Outline of crafts - Wikipedia

    en.wikipedia.org/wiki/Outline_of_crafts

    Crafts are a physical manifestation of the internal human creative impulse and typically involves the use of hands to create the artform. One of the visual arts – visual arts is a class of art forms, including painting, sculpture, photography, printmaking and others, that focus on the creation of works which are primarily visual in nature.

  8. Casing hanger - Wikipedia

    en.wikipedia.org/wiki/Casing_hanger

    Casing Hangers may also be suspended within the wellhead by means of radial distortion of the wellhead bore e.g. the "Pos-Grip" method. This is installed to support the individual casing strings in the well. It is the landing base or the casing head. This is usually welded or screwed to the top of the surface casing string.

  9. Completion (oil and gas wells) - Wikipedia

    en.wikipedia.org/wiki/Completion_(oil_and_gas_wells)

    It is a cylindrical valve with either a ball or flapper closing mechanism. It is installed in the production tubing and is held in the open position by a high-pressure hydraulic line from surface contained in a 6.35 mm (1/4") control line that is attached to the DHSV's hydraulic chamber and terminated at surface to a hydraulic actuator. The ...

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