Spotting fluid for differential sticking

Details Spotting fluid for differential sticking Spotting fluid for differential sticking

2006-01-10

2006-01-10

Tucker, Philip C. (Department: 1712)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S267000, C507S940000

Reexamination Certificate

active

06984611

ABSTRACT:
A new composition for a spotting fluid and a method of using such spotting fluid for freeing differential stuck pipe in a subterranean well drilling operation is disclosed. The composition comprises an invert water-in-oil emulsion comprising iso-butyl oleate as its external phase and glycerin as the internal phase. In an alterative embodiment, calcium chloride and water may be substituted for glycerin.

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