Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Graphite – coal – or elemental carbon
Patent
1995-05-01
1996-07-16
McAvoy, Ellen M.
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Graphite, coal, or elemental carbon
508122, C10M12500
Patent
active
055364225
ABSTRACT:
The present invention discloses the use of nonmetallic, finely divided polymeric or natural fibers in anti-seize thread compound formulations for use on rotary shouldered, oilfield tubular good or tapered threaded connections. The addition of such fibers into formulas that do not contain metallic powders or flakes (typically utilized to provide the anti-galling properties) provides a measurable improvement in the galling and seize resistance properties. Therefore, the incorporation of such fibers provides a film strength improvement in environmentally responsible thread compound compositions, which previously would not provide the level of galling resistance to perform in severe applications such as oilfield directional or geothermal drilling.
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API Bulletin 5A2, Sixth Edition, May 31, 1988, "Bulletin on Thread Compounds for Casting, Tubing, and Line Pipe," issued by American Petroleum Institute.
George Mathews
Oldiges Donald A.
Jet-Lube, Inc.
McAvoy Ellen M.
Strozier Robert W.
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