As reviewed in the previous chapter, there are different types of working units employed for permanent P&A operations depending on the well location and type of production facility. When considering onshore wells, the site space is not a concern, except for mountainous areas and swamps. However, site space for offshore wells may be a concern. Selection of working units for offshore wells is a concern as the daily rate of working units highly affect the final cost of permanent P&A operation. Generally speaking, there are some critical factors to be considered for the selection of the optimal working unit for the P&A job including: well location (either onshore or offshore), depth of operation/hole, required horsepower, availability of working unit, type of production facility, type of well completion, unit capacity (offshore wells) and availability of space (offshore wells). Unit capacity is the maximum load which a unit, production facility or platform, can support without collapsing.


    Access

    Download


    Export, share and cite



    Title :

    Work Classification and Selection of Working Units


    Additional title:

    Ocean Engineering & Oceanography


    Contributors:


    Publication date :

    2020-01-28


    Size :

    20 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English





    Different Categories of Working Units

    Khalifeh, Mahmoud / Saasen, Arild | Springer Verlag | 2020

    Free access

    Work Support Units from Hydrajaws

    Emerald Group Publishing | 1986



    COMBINATION OF UNITS FOR WORK MACHINE

    INADA KEIKO / TAKAOKA DAISUKE / OKA TAKAHIRO | European Patent Office | 2024

    Free access

    Light power units for railway work

    Engineering Index Backfile | 1929