Method of and apparatus for protecting downhole equipment

Details Method of and apparatus for protecting downhole equipment Method of and apparatus for protecting downhole equipment

1989-12-29

1991-08-13

Dang, Hoang C.

Wells

Processes

Placing or shifting well part

166182, 166208, 277206R, 277227, E21B 3304

Patent

active

050388657

ABSTRACT:
A method and apparatus for the protection of downhole equipment from excessive pressure conditions which includes providing structures of volume compensating material which are designed to resist normal pressures expected in the well bore. One form of the invention has a plurality of half sections of volume compensating material positioned around one of the tubular member in the annulus which has fluids that can increase in pressure to a point approaching damage to the interior of exterior member of the annulus. In another application a resilient seal includes a recess into which a ring of volume compensating material is placed to allow a place for fluids to flow when they are subjected to overpressure conditions.

REFERENCES:
patent: 3767211 (1973-10-01), Amphlett
patent: 4593448 (1986-06-01), Ferrari Aggradi et al.
patent: 4662663 (1987-05-01), Schmitz
patent: 4768275 (1988-09-01), Schmitz
patent: 4823871 (1989-04-01), McEver et al.
patent: 4869319 (1989-09-01), Szymozak et al.
patent: 4869535 (1989-09-01), Breese
patent: 4887846 (1989-12-01), Chin et al.

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