METHOD OF AND APPARATUS FOR PROTECTING DOWNHOLE EQUIPMENT

摘要

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 (26) of volume compensating material positioned around one of the tubular members (22) in the annulus (20) which has fluids that can increase in pressure to a point approaching damage to the inerior or 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.