METHOD AND APPARATUS FOR PROTECTING DOWNHOLE COMPONENTS FROM SHOCK AND VIBRATION |
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| 申请号 | EP14863312.6 | 申请日 | 2014-10-29 | 公开(公告)号 | EP3071788B8 | 公开(公告)日 | 2018-12-26 |
| 申请人 | Hunting Energy Services Inc.; | 发明人 | POPE, Jason Michael; | ||||
| 摘要 | The lower end assembly of a measurement while drilling tool is secured against shock and vibration while drilling through the use of a locking cuff, an abrasion ring and a locking nut. A mule shoe at a lower end of the assembly has a diameter sized to allow a pulser helix to pass. The locking cuff is installed on one end of the mule shoe. A poppet housing is attached to an end of the pulser helix opposite the mule shoe. An abrasion ring is received about the external diameter of the pulser helix and is received on a shoulder located between the pulser helix and the poppet housing. An externally threaded lower end of the locking nut is received within a mating threaded bore in the extended locking cuff so that a portion of the locking nut is located between the locking cuff and the poppet housing. Tightening the locking nut within the bore of the locking cuff acts to lock the lower end assembly with respect to the mule shoe. | ||||||
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