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  1. Unionlever (Group) Petroleum Equipment Co.,Ltd.

    Fixed Diameter Hole Opener and cutter
     




    Fixed Diameter Hole Opener

     



    The Fixed Diameter Hole Opener is made of tough heat treated alloy steel for maximum strength. Cutter arms, equipped with replaceable cutter, are hardfaced and welded on body. Cutters are available in three types: type SM for soft to medium formation, type MH for medium to hard formation and type XH for hard formation. The hole openers have three or six jet tubes with replaceable nozzles, so that jet streams quickly clean the enlarged hole.

    Type

    Std. Opening
    Hole(inch)

    Qty. of Cutters

    Pilot Hole (mini)
    mm(inch)

    Fishing Neck

    Down Conn. API

    I.D.
    mm(inch)

    OAL
    mm(inch)

    Weight with Cutters
    (kg) approx.

    Length
    mm(inch)

    Dia.
    mm(inch)

    Up Conn. API

    KZ3-311

    12-1/4

    3

    246(8-1/2)

    457.2(18)

    203(8)

    6-5/8REG

    4-1/2REG

    38.1(1-1/2)

    1524(60)

    360

    KZ3-444

    7-1/2

    3

    266.7(10-1/2)

    457.2(18)

    241.3(9-1/2)

    7-5/8H90

    7-5/8REG

    57.2(2-1/4)

    1752(69)

    550

    KZ3-660

    26

    3

    444.5(17-1/2)

    457.2(18)

    241.3(9-1/2)

    7-5/8REG

    7-5/8REG

    76.2(3)

    1753(69)

    900

    KZ3-914

    36

    3

    609.6(24)

    609.6(24)

    241.3(9-1/2)

    7-5/8REG

    7-5/8REG

    76.2(3)

    1905(75)

    1000

    KZ4-914

    36

    4

    457.2(18)

    457.2(18)

    254(10)

    7-5/8REG

    7-5/8REG

    88.9(3-1/2)

    2642(104)

    1540



    The fixed-diameter hole opener is designed for use in soft clays and shales to medium-hard shales and limestones and is particularly effective in sticky formations where balling problems are encountered. Three jets with replaceable nozzles continuously clean the tool’s cutting structure, clearing debris buildup and increasing penetration.

    Versatile and robust

    A range of milled tooth and tungsten carbide insert (TCI) cutting structures are available for a variety of formation conditions. The hole opener is available in sizes 6 1/4 to 42 in, with hand-tool demountable cutters that are easily replaced on the rig floor. Tools for hole sizes of 36 in or more are designed with four arms and cutters. The robust design and construction enable drilling of longer intervals.

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