Baroid Technology, Inc.

Halliburton Energy Services, Inc.

Cognis IP Management Gmbh

Emery Oleochemicals Gmbh

Jeffrey P Kirsner

Heinz Muller

James Van Fisk, Jr

Kimberly Jo Burrows

A method and combination of materials for freeing stuck pipe involves first the spotting of a clear brine, preferably calcium chloride, calcium bromide or zinc bromide, or mixtures thereof, for a given period of time, preferably at least about 8 hours, in the stuck region of the pipe, followed by the spotting of a spotting agent selected from wetting agents, surfactants, lubricants, or mixtures thereof, in the region of the stuck pipe.

Method and combination of materials for releasing a stuck pipe

A method and combination of materials for freeing stuck pipe involves first the spotting of a clear brine, preferably calcium chloride, calcium bromide or zinc bromide, or mixtures thereof, for a given period of time, preferably at least about 8 hours, in the stuck region of the pipe, followed by the spotting of a spotting agent selected from wetting agents, surfactants, lubricants, or mixtures thereof, in the stuck region of the pipe.

Method and combination for materials for releasing a stuck pipe

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Friendswood, TX, United States of America

Jeffrey P Kirsner