Downhole drilling spotting fluid composition and method

Details Downhole drilling spotting fluid composition and method Downhole drilling spotting fluid composition and method

1990-06-01

1991-03-26

Stoll, Robert L.

Compositions

Leather or fur treating

252 851, 252 8514, C09K 702

Patent

active

050026720

ABSTRACT:
An aqueous-based composition comprising a glycerophosphoric acid ester and a diacetyltartaric acid ester of mono and/or diglycerides when combined with viscosifier, sealant and weighting agent is suitable for use as a spotting fluid for downhole drilling operations for releasing stuck drill string. The present invention also enhances drill fluid lubricity, is nontoxic to marine life, non-polluting and may be safely disposed of in off-shore waters.

REFERENCES:
patent: 2345388 (1944-03-01), Ericks et al.
patent: 2357497 (1944-09-01), Bond
patent: 2661334 (1953-12-01), Lummus
patent: 4843048 (1989-06-01), House et al.

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