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ZJS Jar Intensifier

Product Detail

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    ZJS Jar Intensifier

    Technical Features

    The Zjs Type Jar Intensifier is a kind of down hole fishing jar designed to increase jarring energy to top jar .Therefore ,it must be run in conjunction with YSJ type hydraulic top jar or CSJ type super jar. Its main function is to supply acceleration to the upper end of the jar during the free jarring stroke. With a special function , the intensifier is essentially a fluid spring which not only can accelerate the top jarring action but also make the jarring action directly to strike on the fish and reduce damages to the drill tool and fishing tool.

    Working principle

    When it is used, the jar intensifier is connected on the top of drill collar and on the lower end of drill stem. When the fishing tool engage the fish and the drill tool is lifted up , the silicone oil in the top chamber of piston is compressed and a large number of energy is thus stored .During lifting , when top jar reach up to free impact stroke, the stored energy in the jar intensifier will suddenly release, the energy suddenly released will provide a very large acceleration for drill collar and top jar to move upward .When the top jar reaches up to max. stroke, a strong top jarring action will impact directly on the fish, as a result, one time jarring is produced, and more times jarring will be effected by repeating this course.

    Technical parameters

    Parameter Model

    ZJS31B

    ZJS36B

    ZJS42B

    ZJS44B

    ZJS46B

    ZJS62B

    ZJS64B

    ZJS70B

    ZJS80B

    ZJS90B

    Product Code

    0501000

    0503000

    0505000

    0506000

    0508000

    0510000

    0511000

    0513000

    0515000

    0516000

    O.D. (mm)

    79

    95

    108

    114

    121

    160

    165

    178

    203

    229

    I.D. (mm)

    25.4

    28

    32

    38

    38

    57

    57

    57

    71.4

    76

    Overall length of pull down (mm)

    2991

    3110

    3240

    3340

    3340

    4500

    4500

    4000

    4010

    4070

    Stroke (mm)

    215

    215

    250

    250

    250

    330

    330

    310

    330

    330

    Connection

    2 3/8REG

    NC26

    NC31

    NC31

    NC38

    NC50

    NC50

    NC50

    6 5/8REG

    7 5/8REG

    Max. tensile load downhole (kN)

    300

    550

    700

    800

    900

    1500

    1500

    1800

    2200

    2500

    Max. work torque

    (kN.m)

    3

    4

    6

    7

    8

    15

    15

    17

    20

    22

    Sealing pressure(MPa)

    30

    30

    30

    30

    30

    30

    30

    30

    30

    30

    Pull down Full stroke force (tf)

    13~15

    17~20

    25~30

    25-30

    30~35

    60~65

    60~65

    75~85

    62~67

    75~85

    Weight(kg)

    120

    170

    190

    200

    230

    530

    560

    600

    900

    1030

     

     

     

Shaanxi BRJ Petroleum Machinery Equipment Co.,Ltd
Add: Room 2-1014,3rd building,Deyi international center,No.6 Changqing 2nd road,
Economic and technological development zone,Xi'an,china
Tel/Fax: 0086-29-89612241   Email: Sales@brj-oiltools.com  http://www.brj-oiltools.com