Patent · US Active

Method and apparatus for wellbore centralization

US11225841B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

FRANK'S INTERNATIONAL, LLC · US

Inventors

Ron D. Robichaux · Houma, US
John E. Hebert · Houma, US
Scottie J. Scott · Houma, US

Key dates

Filing date	Jan 14, 2020
Grant date	Jan 18, 2022
Priority date	—
Expiry date	Jan 14, 2040

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B17/1078
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A centralizer assembly installed on a casing section. A bow spring assembly having bow spring members is installed around the outer surface of the casing section and can rotate about the outer surface of the casing section. At least one portion of the casing section is swaged to increase the outer diameter of that section. Bow spring heel supports prevent bow spring members from contacting the outer surface of the central casing section when compressed. Non-abrasive materials prevent damage to wellhead or other polished bore receptacles.

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