Centralizers for production tubing
Assignee360 Research Labs, LLC
InventorMark Nease
Life of this patent
Estimating the term…
Abstract
Centralizers for stabilizing production tubing within a well may include a mandrel for securing within a section of production tubing and having a gland mounting surface; a gland mounted to the gland mounting surface of the mandrel, and having a cylindrical body and two or more lobes extending radially outward from the cylindrical body and comprised of an abrasion resistant material. Downhole assemblies may include a production string receivable within a cased well; a tubing anchor catcher positioned within the production string; a downhole pump coupled to the production string and located axially below the tubing anchor catcher; and a centralizer coupled to the production string.
Claims19
A centralizer for stabilizing production tubing within a well, the centralizer comprising:
- a mandrel having a first end configured to be coupled to an upper section of production tubing and a second end configured to be coupled to a lower section of the production tubing;
- a gland mounting surface defined on the mandrel and comprising a reduced-diameter section of the mandrel that terminates at a radial shoulder;
- a gland mountable to the gland mounting surface and having a cylindrical body and two or more lobes extending radially outward from the cylindrical body;
- and
- a lower coupling coupled to the second end of the mandrel to secure the gland between the lower coupling and the radial shoulder.
A method for stabilizing production tubing, comprising:
- positioning a centralizer within a cased interval of a wellbore, the centralizer including:
- a mandrel having first and second ends coupled to upper and lower sections, respectively, of the production tubing;
- a gland mounting surface defined on the mandrel and comprising a reduced-diameter section of the mandrel that terminates at a radial shoulder;
- a gland mounted to the gland mounting surface and having a cylindrical body and two or more lobes extending radially outward from the cylindrical body;
- and
- a lower coupling coupled to the second end of the mandrel to secure the gland between the lower coupling and the radial shoulder
- engaging an inner wall of the cased interval with the two or more lobes and thereby centralizing the production tubing within the cased interval.
A downhole assembly comprising:
- a production string extendable within a cased well;
- a tubing anchor catcher positioned within the production string;
- a downhole pump coupled to the production string and located axially below the tubing anchor catcher;
- and
- a centralizer coupled to the production string, the centralizer comprising:
- a mandrel having first and second ends coupled to upper and lower sections, respectively, of the production string;
- a gland mounting surface defined on the mandrel and comprising a reduced-diameter section of the mandrel that terminates at a radial shoulder;
- a gland mounted to the gland mounting surface and providing a cylindrical body and two or more lobes extending radially outward from the cylindrical body;
- and
- a lower coupling coupled to the second end of the mandrel to secure the gland between the lower coupling and the radial shoulder.
Dependencies are inferred from the claim text.