Mechanical Hydraulic Shock Sub Type DHJ
group nameDownhole Tools
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Min Order1 piece
modelDHJ
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update timeFri, 17 Aug 2012 00:01:50 GMT
Paramtents
FUNCTION reduce vibrations
CERTIFICATE API 7-1
TYPE MECHANICAL HYDRAULIC
Packging & Delivery
Min Order1 piece
Briefing
Detailed
The mechanical and hydraulic shock sub type DHJ is a two-function shock sub that absorbs the pulsate and shock from drill tools by compressing spring and SI oil to store the energy. It is used for reducing vibrations caused by hard formation drilling and keeping the drill bit firmly on the bottom, so that it helps to reduce drill string connection fatigue and prolong drill string life.
Specification Series and Performance Parameters
Type | O.D. mm （in） | I.D. mm (in) | Overall Stroke mm (in) | Max. Working Load mm (in) | Ambient Temperature ℃ | Connection API | Overall Length “Extended” mm (in) |
DHJ121 | 121 (4 3/4) | 38 (1 1/2) | 100(3.93) | 40(1.57) | - 40~150 | 31/2REG | 3400 (133.85) |
DHJ159 | 159 (6 1/4) | 50.8 (2) | 120(4.72) | 60(2.36) | - 40~150 | NC46 | 4210 (165.75) |
DHJ 178 | 178 (7) | 57 (2 1/4) | 120(4.72) | 60(2.36) | - 40~150 | NC50 | 4210 (165.75) |
DHJ203 | 203 (8) | 71.4 (2 4/5) | 140(5.51) | 70(2.75) | - 40~150 | 65/8REG | 4700 (185) |
