Deployable centralizers

DWPI Title: Method of positioning casing in well bore, involves enabling gas generating device to generate applied force upon slide portion, so as to extend slide portion away from housing
Abstract: A centralizer assembly is disclosed that allows for the assembly to be deployed in-situ. The centralizer assembly includes flexible members that can be extended into the well bore in situ by the initiation of a gas generating device. The centralizer assembly can support a large load carrying capability compared to a traditional bow spring with little or no installation drag. Additionally, larger displacements can be produced to centralize an extremely deviated casing.
Use: Method of positioning casing in well bore for oil drilling, natural gas, geothermal drilling and other deep earth penetration applications.
Advantage: The centralizer assembly is allowed to support a large load carrying capability with little or no installation drag. Larger displacements can be produced to centralize an extremely deviated casing.
Novelty: The method involves attaching a centralizer assembly (10) with the flexible portions (16) to a casing (18). Multiple flexible portions are placed between the first and second sleeves (12,14) of centralizer assembly. The housing and second sleeve are rigidly attached to the casing. A gas generating device is enabled to generate an applied force upon the slide portion, so as to extend the slide portion away from the housing to cause the flexible portions to pivot in a direction away from the direction of the applied force.
Filed: 3/4/2014
Application Number: US14195986A
Tech ID: SD 12513.1
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license.