Patent · US Active

Downhole device

US8196670B2 · kind B2 · utility

28Cited by

4References

8Claims

0Family size

Assignee

Domain Licences Limited · VG

Inventor

Andrew Jenner · Vechta, DE

Key dates

Filing date	Feb 22, 2010
Grant date	Jun 12, 2012
Priority date	—
Expiry date	Feb 22, 2030

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B37/02
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A stop collar or like device is formed in one piece to have a portion for a tool to be attached. Movement of the tool allows the collar to be drawn tightly into engagement onto a pipe or other tubular member. A bow centraliser has alternate bows longitudinally offset to reduce initial insertion force. The centraliser may be formed to have end bands of the type used in the stop collar.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.