Bearing contact pressure reduction in well tools
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United States of America Patent
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Jun 11, 2013
Grant Date -
Jul 14, 2011
app pub date -
Jan 12, 2010
filing date -
Jan 12, 2010
priority date (Note) -
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Abstract
A method of reducing contact pressure between bearing surfaces of a well tool can include constructing a structure which supports one bearing surface in contact with the other bearing surface, and reducing contact pressure between the bearing surfaces by relieving strain energy in the structure. A well tool can include one bearing surface which contacts another bearing surface. There is a transition between contact and lack of contact between the bearing surfaces. A structure supporting one of the bearing surfaces can have a reduced stiffness, whereby a contact pressure between the bearing surfaces is reduced at the transition. The bearing surfaces can be formed on a thrust bearing, plain bearing, or other type of bearing between components of the well tool.
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