Invention Grant
- Patent Title: Method for making pipe centralizer having low-friction coating
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Application No.: US14322072Application Date: 2014-07-02
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Publication No.: US09765577B2Publication Date: 2017-09-19
- Inventor: Rock Dicke
- Applicant: Rock Dicke Incorporated
- Agency: Energy IP
- Agent Peter L. Brewer
- Main IPC: B05D7/22
- IPC: B05D7/22 ; E21B17/10 ; C23C8/32 ; E21B33/14 ; E21B43/10 ; C23C12/00

Abstract:
A method of fabricating a centralizer for a tubular body in a wellbore is provided herein. The method includes providing a centralizer, wherein the centralizer include an elongated body having an inner surface and an outer surface, and wherein the inner surface defines a bore there through. The bore is dimensioned to slidingly receive a tubular body. The method also includes applying a first low-coefficient of friction treatment to the inner surface and the outer surface using a ferritic nitro-carburizing process. The method further includes depositing a second low-coefficient of friction treatment onto at least the inner surface. The coatings are designed to provide a reduced coefficient of friction on the surfaces.
Public/Granted literature
- US20170275955A9 METHOD FOR MAKING PIPE CENTRALIZER HAVING LOW-FRICTION COATING Public/Granted day:2017-09-28
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