Latching system for maintaining position of component within a downhole drill string section
US6896050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2003 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Aug 5, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A latching system for maintaining the position of a component within a downhole drill string section during operation of a drill string. One preferred latching system embodiment has a shoe member including a cavity for receiving a component, a chamber opening into the shoe member cavity, an engagement member movable in the chamber between a retracted position and an engagement position, a first passage in fluid communication with the chamber and extending to an end surface of the shoe member, and a second passage extending from an outer side surface of the shoe member to the first passage. A pressure differential between pressure in the first passage and pressure in the second passage alters the position of the engagement member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.