Well tool retrieving apparatus
Patent
·
OSTI ID:6322917
This well tool retrieving apparatus or overshot may be continually rotated to cut away accumulated debris above a bridge plug. The apparatus has a rotable tubular member connected to a tubing string and cutting means for rotatively cutting away debris around the well-tool body. A selectively operable clutch is arranged in such a manner that an inner member in one direction but is co-rotatively secured in the opposite direction. The clutch is further arranged to co-rotatively secure the outer and inner members to one another in both rotative directions whenever the inner member is shifted longitudinally upward with respect to the outer member. (9 claims)
- Assignee:
- Schlumberger Technol Corp.
- Patent Number(s):
- US 3321017
- OSTI ID:
- 6322917
- Country of Publication:
- United States
- Language:
- English
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