Wells – Packers or plugs
Reexamination Certificate
2006-06-23
2008-10-28
Bagnell, David J (Department: 3676)
Wells
Packers or plugs
C166S387000, C166S300000, C277S331000, C277S934000
Reexamination Certificate
active
07441596
ABSTRACT:
A sealing element that swells on exposure to well fluids present or added to the wellbore is assembled to the mandrel in a manner to induce circumferential stresses proximately to the inside diameter of the element so as to resist the tendency of the inside diameter of the element to grow during the swelling process. A vacuum and a pressure method are described. Leak paths between the mandrel and the sealing element are minimized or eliminated as a result.
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Bettis Rubber Company, Bettis Hydraulic Installation Equipment; catalog p. 630; date unknown.
Bailey Steven N.
Berzin Vel
Korte James R.
Laflin Walter J.
O'Malley Edward J.
Bagnell David J
Baker Hughes Incorporated
Bomar Shane
Rosenblatt Steve
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