| 发明名称 |
METHOD AND APPARATUS FOR ADDING A TUBULAR TO DRILL STRING WITH DIVERTER |
| 摘要 |
Apparatus and a method for adding and removing tubulars whilst containing the pressure within a drill string and/or maintaining circulation of drilling fluid down a drill string using a diverter sub which is able to open up to mud flow from a side mud port and close off the flow of mud from above the drill string with or without continuous rotation of the drill string. |
| 申请公布号 |
WO2005019596(A1) |
申请公布日期 |
2005.03.03 |
| 申请号 |
WO2004GB03501 |
申请日期 |
2004.08.16 |
| 申请人 |
COUPLER DEVELOPMENTS;AYLING, LAURENCE, JOHN |
发明人 |
AYLING, LAURENCE, JOHN |
| 分类号 |
E21B19/16;E21B21/00;E21B21/10;E21B33/068;E21B33/08;E21B34/00 |
主分类号 |
E21B19/16 |
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