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Title: Deployable centralizers

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.

Inventors:
; ;
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1568570
Patent Number(s):
10344542
Application Number:
15/441,058
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Patent File Date: 02/23/2017
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 02 PETROLEUM; 15 GEOTHERMAL ENERGY; 03 NATURAL GAS

Citation Formats

Grubelich, Mark C., Su, Jiann-Cherng, and Knudsen, Steven D. Deployable centralizers. United States: N. p., 2019. Web.
Grubelich, Mark C., Su, Jiann-Cherng, & Knudsen, Steven D. Deployable centralizers. United States.
Grubelich, Mark C., Su, Jiann-Cherng, and Knudsen, Steven D. Tue . "Deployable centralizers". United States. https://www.osti.gov/servlets/purl/1568570.
@article{osti_1568570,
title = {Deployable centralizers},
author = {Grubelich, Mark C. and Su, Jiann-Cherng and Knudsen, Steven D.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {7}
}

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Works referenced in this record:

Centralizers for oil well casings
patent, November 1993


Large head downhole chemical cutting tool
patent, February 1994


Hidden bow spring for calipers and centralizers
patent, September 1976


Deployable centralizers
patent, February 2017