Seal assemblies and packer members therefor

Details Seal assemblies and packer members therefor Seal assemblies and packer members therefor

E - Fixed Constructions

21

B

166/43

E21B 23/06 (2006.01) E21B 33/03 (2006.01) E21B 33/04 (2006.01) F16J 15/20 (2006.01) E21B 33/00 (2006.01)

Patent

CA 1158974

ABSTRACT A packer member comprising corrugated rings, particularly for seating the annular clearance between the casing and tubing of an oil well. The packer is carried upon a collar presented by a member coupled into the tubing, and axial compression of the packer flattens the corrugations, expanding the rings radially so that they make a tight fit with the inner wall of the casing by either penetrating it or distorting against it; at the same time the axial compression makes a tight fit between the inner edges of the rings and the collar on which they are supported. The packer may comprise a stack of corrugated rings alternately of harder and softer material, and occasional robust rings may add stability.

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