Wellbore fishing tools
US6095583A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1997 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Jun 9, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B31/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for retrieving an object from a wellbore has been invented having an inner body and a longitudinal fluid flow bore therethrough, and at least one lateral flow bore therethrough, the bottom end having an opening suitable for receiving therein a fluid actuable member disposed for reciprocation with respect to the inner body, bias apparatus contacting the fluid actuable member for moving the fluid actuable member with respect to the inner body, and the fluid actuable member disposed so that the bias apparatus can push the fluid actuable member down to contact a plurality of fingers and move them into the longitudinal flow bore to engage the object in the wellbore when insufficient fluid pressure is present to overcome force of the bias apparatus in the fluid actuable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.