Anti-seize thread compound
AssigneeJet-Lube, Inc.
InventorsDonald A. Oldiges, Mathews George
Life of this patent
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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.
Claims20
An anti-seize thread compound including one or more thixotropic base materials, one or more boundary lubricants, and one or more finely divided non-metallic fibers, where the thixotropic base material comprises one or more fluids and one or more suspending agents.
An anti-seize thread compound comprising from about 40% to about 80% by weight of a thixotropic base material, from about 5% to about 40% by weight of one or more boundary lubricants and from about 0.1% to about 10% by weight of one or more finely divided non-metallic fibers.
A method for making a non-metallic, anti-seize thread compound comprising the steps of:
- a. mixing one or more thixotropic base materials and one or more finely divided, non-metallic fibers to form a highly dispersed fiber grease pre-mix designed to disperse the fiber in the thixotropic base material absent visible fiber clumps, where the thixotropic base materials comprise one or more fluids and one or more suspending agents;
- b. adding with mixing the fiber grease of step (a) to the same or different thixotropic base material of step (a) and one or more boundary lubricants to form a thread anti-seize compound;
- c. mixing the anti-seize compound until a homogenous composition results.
Dependencies are inferred from the claim text.