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随钻震击器是连接在钻具中随钻柱一起进行钻井作业的井下解卡工具。它是打定向井，复杂井，深井必不可少的理想工具。随钻震击器由ZSJ型随钻上击器和ZXJ型随钻下击器两个独立部件组成，可单独作用、也可联合使用。上击器采用液压原理，其震击力可由上提力的大小自由调节，但使用时不允许超过工具限定的最大负荷。下击部分采用的是机械摩擦原理，震击力是通过调节机构在地面预先调整好后再下入井内，下井后不能再进行调节。
The drilling jar which is connected with drill tool and worked with drill string is a downhole stuck freeing tool in drilling operation .It is a first selected tool for directional well,complicated well and deep well.The drilling jar is consisting of ZSJ type drilling up jar and ZXJ type drilling down jar,both they can be used mutually or operated separately .The up jarring section takes use of hydraulic mechanism,the jarring force can be adjusted according to up elevating load but can not exceed the max.load for tool load rated .The down jarring section takes use of mechanical friction mechanism, the jarring force is well preadjusted by adjusting device before put into downhole.No re-adjustment can be allowed after jar is put into downhole.
技术规格及参数
型号
参数 |
ZSJ80B
ZXJ80B |
ZSJ76B
ZXJ76B |
ZSJ70B
ZXJ70B |
ZSJ62B
ZXJ62B |
ZSJ56B
ZXJ56B |
ZSJ46B
ZXJ46B |
| 外径(mm) |
203 |
197 |
178 |
160 |
146 |
121 |
| 水眼(mm) |
71.4 |
71.4 |
70 |
57 |
57 |
51 |
| 拉开总长(mm) |
上端 |
5515 |
5515 |
5424 |
5360 |
5730 |
5300 |
| 下端 |
5250 |
5250 |
5215 |
5215 |
5000 |
4760 |
| 拉开行程(mm) |
上端 |
368 |
368 |
344 |
344 |
332 |
305 |
| 下端 |
178 |
178 |
178 |
178 |
180 |
178 |
| 接头螺纹 API |
6 5/8 REG |
6 5/8 REG |
NC50 |
NC46 |
4 1/2 FH |
NC38 |
| 最大抗拉负荷(KN) |
2500 |
2500 |
2300 |
2200 |
2000 |
1400 |
| 最大工作扭矩(N.m) |
20×103 |
18×103 |
15×103 |
15×103 |
15×103 |
13×103 |
| 上击器标定释放力(KN) |
400～600 |
400～600 |
350～550 |
300～450 |
200～350 |
150～250 |
| 最大上击释放力(KN) |
750 |
750 |
550 |
550 |
450 |
270 |
| 最大下击释放力(KN) |
600 |
600 |
550 |
500 |
400 |
250 |
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