ID centralizer
US8561708B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2011 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Jan 20, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1007
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus and methods of spacing a tool from walls of tubing are provided as embodiments of the present invention. The apparatus can include a centralizer that is inserted in the tubing, the centralizer having inwardly arched sides or inwardly arched bow springs so that an inner diameter of the centralizer increases from a longitudinal midpoint to a longitudinal end point of the centralizer. The centralizer has a smaller diameter than the tubing so that it can be positioned inside of the tubing downstream of a seating ring in a relaxed position so that when the tool passes through the centralizer, the inwardly arched sides or inverted bow springs expand towards an inner wall of the tubing to centralize and inhibit radial movement of the tool when deployed through the inwardly arched sides of the centralizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.