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Mechanical drilling jar is full mechanical type drilling jar and releasing stuck tool. It integrate upward jarring with downward jarring so that it can release drilling tools from the block or the stuck etc. during drilling. It is a part of drill stem when it doesn't jarring and it can work at any time when need jarring, thus it is highly improve the drilling efficiency, it has widely load (jarring force) scope of upward jarring and download jarring, so it can be adjusted at the maintenance station or on the well site according to the requirement. The special flexible joint can effectively reduce the flexural stress of the drilling jar body. Therefore, it is the first selected drilling jar for vertical well, deep well, directional well and complicated well operations..
Model | BZ121 | BZ165 | BZ203 | BZ229 | |
OD | mm (inch) | 121 (4-3/4) | 165 (6-1/2) | 203 (8) | 229 (9) |
ID | mm (inch) | 50.8(2) | 57.2 (2-1/4) | 71.4 (2-13/16) | 76.2 (3) |
Tool Joint Connection | API | NC38 | NC50 | 6-5/8 REG | 7-5/8 REG |
Max. Upward Jarring Force | KN(lbf) | 450 (100,000) | 630 (140,000) | 820(184,000) | 1000 (225,000) |
Max. Downward Jarring Force | KN(lbf) | 230 (51,700) | 360 (81,000) | 460 (103,500) | 500 (112,000) |
Max. Tensile Load | KN(lbf) | 1100 (247,000) | 2000 (450,000) | 2500 (562,000) | 3000 (675,000) |
Tensile Yield | KN(lbf) | 1500 (337,000) | 3000 (675,000) | 4000 (900,000) | 6000 (1350,000) |
Torsional Limited | KN m (lbf-ft) | 13 (10,000) | 15 (11,000) | 20 (14,000) | 45 (33,000) |
Torsional Yield | KNm (lbf-ft) | 20 (14,000) | 25 (1&000) | 35 (25,000) | 60 (45,000) |
Overall Length | mm (ft) | 6370 (20.9) | 7015 (23) | 7310(24) | 7431 (24.4) |
0531-69959201
lqg18653457231
+86-18653457231
No 12111,Jingshi Road, Lixia District, Jinan City, Shandong Province. P.R. China
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