浮阀芯
浮阀芯在正常钻井时,阀盖打开,钻井液畅通循环,当井下发生井涌或者井喷时,阀盖关闭达到防喷目的,起下钻作业时,防止钻井液回流,阻止泥沙进入钻柱,起到防堵作用。
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详细介绍
浮阀芯在正常钻井时,阀盖打开,钻井液畅通循环,当井下发生井涌或者井喷时,阀盖关闭达到防喷目的,起下钻作业时,防止钻井液回流,阻止泥沙进入钻柱,起到防堵作用。
In normal well-drilling, the valve cover of the floating valve core opens, then the drilling fluid circulates smoothly. When the well kick or blowout occurs under the well, the valve cover is closed so as to reach the purpose of blowout prevention, which can prevent the drilling fluid backflow, and prevent the sediment from getting into the drill string to get anti -blocking effect during stripping-in operations.
Specifications
|
代号 Code |
长度(mm) Length |
阀芯外径(mm) Valve Core O.D |
推荐安装螺纹 Recommend installing thread |
|
|
1R/70 |
149 |
φ43 |
2 3/8REG |
NC23 |
|
1F-2R/70 |
159 |
φ48.4 |
2 7/8REG |
NC26 |
|
2F-3R/70 |
165 |
φ62 |
3 1/2REG |
NC31 |
|
3F/70 |
254 |
φ72 |
3 1/2REG |
NC38 |
|
3 1/2IF/70 |
254 |
φ79.3 |
3 1/2IF |
NC38 |
|
4R/70 |
211 |
φ88.9 |
4 1/2REG |
NC44 |
|
5R/70 |
248 |
φ98.4 |
5 1/2REG |
NC50 |
|
5F-6R/70 |
298 |
φ122 |
6 5/8REG |
5 1/2IF |
|
①工具为双母扣时,优先选用小扣型端安装浮阀芯; When tool has two female threads, preferentially choose small connection type to install float valve core; ②按先IF→REG→NC扣型的先后顺序来安装浮阀芯。 Install the valve core according to the order of IF - REG - NC connection. |
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关键词:
高峰石油机械设备、油气钻采井下工具
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