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YJ型单向减震器是靠液压油在外部压力的作用下产生弹性变形和阻尼作用来实现吸震和减震的一种钻井工具。它结构简单、工作可靠、操作维护方便，能够很好地吸收在钻井作业中钻柱所产生的冲击和震动负荷。所以在钻井作业中采用减震器，对于延长钻头使用寿命，加快钻进速度、克服严重跳钻、保证正常钻井、保护地面设备及钻具是十分可靠的。
YJ tupe one-way shock absorber is a kind of drilling tool which effects shock absorption by depending on hydraulicoil under external force through elastic deformation and damping.With some features of simple construction,easy and reliable operation,it can fully overcome the impact and shocking load from drill strings during drilling operation. Taking use of the shock absorber,it can raise the service life for drill bit and drill tool,speed up drilling,get rid of drilling jumping ,well protect surface equipments and drilling tools.
技术规格及参数
| 型号 |
外径(mm) |
水眼(mm) |
最大行程(mm) |
最大钻压(KN) |
抗拉强度(KN) |
环境温度(°C) |
接头螺纹
|
拉开总长(mm) |
| YJ121C |
121 |
38 |
121 |
265 |
1000 |
-40～150 |
NC38 |
3950 |
| YJ160C |
160 |
47 |
120 |
343 |
1500 |
-40～150 |
NC46 |
3980 |
| YJ178C |
178 |
57 |
120 |
392 |
1500 |
-40～150 |
NC50 |
3800 |
| YJ203C |
203 |
64 |
150 |
490 |
2000 |
-40～150 |
6 5/8 REG |
4100 |
| YJ229C |
229 |
70 |
150 |
539 |
2000 |
-40～150 |
7 5/8 REG |
3820 |
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