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Method of Installing Rigid Zonal Isolation Devise in Expandable Completion

IP.com Disclosure Number: IPCOM000125316D
Publication Date: 2005-May-26
Document File: 1 page(s) / 45K

Publishing Venue

The IP.com Prior Art Database

Abstract

In order to expand a rigid (non-expanding) zonal isolation device in an expandable completion, a very large ID is needed which will greatly reduce the devices pressure differential rating. This invention covers a method where a series of cones are stored then abandoned once the expansion in that zone is finished.

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Title:  Method of Installing Rigid Zonal Isolation Devise in Expandable Completion

Introduction

This invention is a method of storing and abandoning solid expansion cones on either side of a rigid zonal isolation device.

Summary

In order to expand a rigid (non-expanding) zonal isolation device in an expandable completion, a very large ID is needed which will greatly reduce the devices pressure differential rating.  This invention covers a method where a series of cones are stored then abandoned once the expansion in that zone is finished.

Detailed Description of the Invention Including Examples and Drawings

The solid cone expansion in multiple zones would occur in 4 steps (shown in the attached figure):

 

  1. The work string is run down from surface and snaps into the first cone.  This cone is built with a feed through so that the work string can pass through the ID, expanding the lower zone.
  2. The first zone is expanded top down by slacking off work string weight.  The cone is abandoned at the bottom of the zone by snapping the work string out of the cone’s ID.
  3. The work string engages the second cone stored at the top of the bottom zone.  Expansion is begun from the top down.

  4. The second cone is abandoned and the completion bottom and the work string is recovered.