Apparatus and method for disconnecting a tail pipe and maintaining fluid inside a workstring
US6772835B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Oct 5, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/134
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An embodiment of a downhole tool for use with a workstring in a wellbore includes a first section, a second section, and a coupling mechanism adapted such that in a first configuration the coupling mechanism couples the first section to the second section. In a second configuration, the coupling mechanism does not couple the first section to the second section. Also disclosed is a method for creating a plug in a wellbore, the method comprising: injecting a slurry into the workstring to form a plug in the wellbore, positioning a flow preventing mechanism into the workstring to prevent fluid flow from exiting the workstring, inducing a coupling mechanism to uncouple a portion of the workstring such that the portion remains with the slurry to create the plug in the wellbore, and removing the first section from the wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.