• Saturday, September 24, 2016

    introduction to drilling

    introduction to drilling


    Why We Drill


    TO GET THE BLACK GOLD ( OIL ) & GAS

    TO GET WATER FROM UNDERNEATH

    TO KNOW THE SUB-SURFACE

    Prospect Selection

    In case of Production wells, prospect selection is identified by the need to maintain or increase reservoir production

    Exploration wells require geological and geophysical data 
    gathering, processing and evaluation

    Surface geological study
    Subsurface mapping
    Identification of structures e.g. anticlines, salt domes, fault traps, sand bodies lenses
    Seismic Evaluation


    Historical Background


    1808 PERCUSSION DRILLING BY CHINESE
    FIRST COMMERCIAL WELL

    1859 CABLE TOOL PERCUSSION DRILLING

    1918 WORLD DEEPEST WELL BY CABLE
    TOOL ( 7386 ft )

    1930 ROTARY DRILLING

    What are the different Well Locations in terms of Drilling 

    Onshore and Offshore

    ADVANCEMENTS IN ROTARY DRILLING


    DIRECTIONAL DRILLING

    HORIZONTAL DRILLING

    MULTILATERAL DRILLING

    COIL TUBING DRILLING

    Drilling Hazards


    Tools dropped while drilling

    Pipe stuck

    Increased size of hole

    Lost circulation problems

    Sloughing shale

    What we call a successful Drilling Operation


    Through which we get our desired
    results without any accidents.