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

    Drilling Jars Type BZ

    Drilling Jars Type BZ

     

    Drilling Jar Type BZ is full mechanical type drilling jar and releasing stuck tool. The Drilling Jar integrates the upward jarring with the downward jarring so that it can release from the tight pull or the sticking etc. during drilling. The loadjarring forcescope of the upward jarring and the downward jarring is so wide that it can be adjusted in the maintenance station or in the well site according to the requirement. The special flexible joint can reduce the flexural stress of the drilling jar body efficiently. So it is the first selected drilling jar for vertical well, deep sell, directional well and complicated well operations. 







    Type

    O.D.
    (mm/inch)

    I.D.
    (mm/inch)

    Connection
    API

    Max. Upward  Jarring Force
    KN

    Max. Downward  Jarring Force
    KN

    OAL
    (mm/inch)

    BZ121

    121(4-3/4)

    50.8(2)

    NC38

    450

    230

    6356(250)

    BZ159

    159(6-1/4)

    57.2(2-1/4)

    NC50

    630

    360

    7265(286)

    BZ165

    165(6-1/2)

    57.2(2-1/4)

    NC50

    630

    360

    7265(286)

    BZ196

    196(7-3/4)

    71.4(2-13/16)

    6-5/8REG

    820

    460

    7062(287)

    BZ203

    203(8)

    71.4(2-13/16)

    6-5/8REG

    820

    460

    7062(287)

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