Method and combination of materials for releasing a stuck pipe

Details Method and combination of materials for releasing a stuck pipe Method and combination of materials for releasing a stuck pipe

1995-05-15

1996-09-17

Novosad, Stephen J.

Wells

Processes

Freeing stuck object, grappling or fishing in well

507940, 507232, 507277, E21B 3103

Patent

active

055559379

ABSTRACT:
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.

REFERENCES:
patent: 4614235 (1986-09-01), Keener et al.
patent: 4876017 (1989-10-01), Trahan et al.
patent: 4964615 (1990-10-01), Mueller et al.
patent: 5120708 (1992-06-01), Melear et al.
patent: 5141920 (1992-08-01), Bland et al.
patent: 5247992 (1993-09-01), Lockhart
patent: 5260268 (1993-11-01), Forsberg et al.
patent: 5415230 (1995-05-01), Fisk, Jr. et al.

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