Glycol and glycol ether lubricants and spotting fluids

Details Glycol and glycol ether lubricants and spotting fluids Glycol and glycol ether lubricants and spotting fluids

1997-11-26

1999-08-31

Tucker, Philip

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

507261, 507928, C09K 702, C09K 300

Patent

active

059453869

ABSTRACT:
A non polluting additive or spotting fluid which lubricates, releases and/or prevents differentially stuck drill strings and casings in the wellbore of a subterranean well is presented. This additive composition comprises a glycol or glycol ether derived from a long chain epoxide of greater than 3 carbon atoms (preferably greater than 10 carbon atoms); and preferably comprises the reaction product between 2-ethylhexanol and the epoxide of 1-hexadecene. The present invention enhances the lubricity of a drilling fluid to prevent drill string sticking and when utilized as a spotting agent reduces the time required to release a stuck pipe. This invention also helps reduce or prevent foaming. By eliminating the need for traditional oil-based components, the present invention is nontoxic to marine life, biodegradable, environmentally acceptable, easy to prepare, and capable of being disposed of at the drill site without costly disposal procedures.

REFERENCES:
patent: 3723311 (1973-03-01), Lummus
patent: 3920559 (1975-11-01), Etling
patent: 4614235 (1986-09-01), Kenner et al.
patent: 5318955 (1994-06-01), Mueller et al.

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