Tubing and profile reaming tool
US5351758A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1993 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | Feb 22, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for reaming foreign deposits from the flow passage of well production tubing and cleaning deposits from the completion profiles within the tubing as well as for drifting the production tubing while located within a well bore. A reaming tool is extended through the tubing string and is rotated for reaming operations. A plurality of reaming dogs of the tool are selectively and radially expanded to tubing and tubing completion profile reaming positions by cams of a hydraulically operated linearly removable actuator mandrel. The actuator mandrel is spring-urged toward a position permitting spring-urged retraction of the reaming dogs so that the reaming tool may be introduced into or withdrawn from the tubing string by linear movement. The actuator mandrel has cams thereon for accomplishing radial expansion of the reaming dogs and defines a restricted through-passage to permit the flow of fluid for other downhole activities or to permit fluid circulation through the tubing with the reamer located therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.