• Saturday, September 17, 2016

    Drilling bit:types-uses-advantages

    Drilling bit:types uses advantages

    The drill bit is very important component in the drill string and are 
    selected according to the formation to be drilled and cost

    The bit performance is depend on several operating parameters such

    (Weight on bit (WOB 

    (Revolution per minute(RPM

    Mud properties and hydraulic efficiency


    TYPE OF BITS AND USES

    Drilling bit:types-uses-advantages
    TYPE OF BITS

    Drag Bits

    Roller Cone Drilling Bits

    Diamond Drilling Bits


    Drag Bits uses advantages


    Drag bits is the first bits used in rotary drilling but are no longer in common use this type of bits applied at high RPM and low WOB

    The decline in the use of drag bits was due to

    The introduction of roller cone bits, which could drill soft formations more efficiently

    Used with soft formation but limited use with hard formation

    If too much WOB was applied, excessive torque led to bit failure or drill pipe failure

    Roller Cone Drilling Bits


    Roller Cone Drilling Bits is the most common type of bits used in the world becouse good work and low cost when Compare with diamond drilling bits

    Advantage

    Improved cleaning action by using jet nozzles

    Used with hard and soft formation

    Less cost Compare with diamond drilling bits


     Diamond drilling bits


    Drilling bit:types-uses-advantages


    Used with high hardness rock 

    More effective but high cost

    PDC

    Drilling bit:types-uses-advantages

    A new generation of diamond bits known as polycrystalline diamond compact (PDC) bits

    PDC bits have been run very successfully in many areas around the world. They have been particularly successful (long bit runs and high
    ROP) when run in combination with turbodrills and oil based mud.

    TAGS


    Drilling bit-TYPES OF BITS-USESOF BITS
    Drag Bits
    Roller Cone Drilling Bits
    Diamond Drilling Bits