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Multi-functional isolation tool and method of use

  • US 8,201,631 B2
  • Filed: 04/01/2011
  • Issued: 06/19/2012
  • Est. Priority Date: 09/03/2010
  • Status: Active Grant
First Claim
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1. A completion tool for deployment within a wellbore on tubing string, the assembly comprising:

  • upper and lower sealing members defining a straddle zone between the upper and lower sealing members;

    one or more treatment ports within the straddle zone, the treatment ports continuous with tubing string to allow fluid delivery to the wellbore from surface;

    a valve housing mounted beneath the lower sealing member, the valve housing defining a fluid passageway continuous with the tubing string and with the wellbore annulus beneath the lower sealing member to allow pressure equalization therebetween;

    a bypass plug slidable within the valve housing between an open position in which fluid passage through the housing is permitted, and a sealed position in which fluid passage through the housing is prevented, the plug actuable to open or to seal the passageway upon application of mechanical pressure to the tubing string; and

    a resettable anchor device operatively mounted beneath the lower sealing member for setting against the casing of a wellbore, the anchor device operable by application of mechanical force to the tubing string.

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