METHOD AND APPARATUS FOR STIMULATING HYDROCARBON WELLS

  • US 20080047717A1
  • Filed: 10/29/2007
  • Published: 02/28/2008
  • Est. Priority Date: 12/09/2004
  • Status: Active Grant
First Claim
Patent Images

1. A downhole tool, comprising;

  • a body having a recess formed therein, the recess adapted to receive a pivotable valve member having at least one concave surface;

    a valve seat disposed within the body; and

    a shiftable sleeve disposed within the body, wherein the sleeve, in a first position, is adapted to contain the pivotable valve member within the recess and seal the recess against entry of debris, and the sleeve, in a second position, is adapted to release the pivotable valve member allowing the pivotable member to engage the valve seat.

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