Downhole tool and method of use

  • US 9,976,382 B2
  • Filed: 05/29/2015
  • Issued: 05/22/2018
  • Est. Priority Date: 08/22/2011
  • Status: Active Grant
First Claim
Patent Images

1. A downhole tool useable for isolating sections of a wellbore, the downhole tool comprising:

  • a mandrel made of composite material, the mandrel further comprising;

    a proximate end having a first outer diameter;

    a distal end having a second outer diameter;

    an external side having an angled linear transition surface; and

    a flowbore extending from the proximate end to the distal end;

    a metal slip disposed about the composite mandrel, the metal slip comprising;

    a circular metal slip body;

    an outer surface comprising columns of serrated teeth; and

    an inner surface configured for receiving the mandrel,a seal element;

    a composite slip disposed about the mandrel, the composite slip further comprising a circular composite slip body having one-piece configuration with at least partial connectivity around the entire circular composite slip body, and an at least two slip grooves disposed therein, wherein the composite slip body further comprises a composite slip outer surface and a composite slip inner surface, wherein at least one of the at least two slip grooves forms a lateral opening in the composite slip body that is defined by a first portion of slip material at a first slip end, a second portion of slip material at a second slip end, and a depth that extends from the composite slip outer surface to the composite slip inner surface;

    a first cone disposed around the mandrel, and proximately between an underside of the composite slip and an end of the seal element; and

    a lower sleeve disposed around the mandrel and proximate an end of the metal slip.

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