Downhole fluid communication apparatus and method

• US 8,220,536 B2
• Filed: 03/03/2010
• Issued: 07/17/2012
• Est. Priority Date: 12/16/2005
• Status: Active Grant

• Current Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Original Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Inventors: Tao, Chen, Hlavinka, Danny A., Brown, Jonathan W., Del Campo, Christopher S., Briquet, Stephane, Ervin, Steve, Hayes, Kevin W.
• Primary Examiner(s): Neuder, William P
• Assistant Examiner(s): Ro, Yong-Suk
• Application Number:
  US12/716,882
• Publication Number:
  US 20100155053A1
• Time in Patent Office: 867 Days
• Field of Search: 166/100.264, 166/179, 175/50, 731/522.6, 731/521.7
• US Class Current: 166/100
• CPC Class Codes: E21B 33/1216 Anti-extrusion means, e.g. means to prevent cold flow of rubber packing
• CPC Class Codes: E21B 49/10 using side-wall fluid samplers or testers

Abstract

A probe for establishing fluid communication between a downhole tool and a subterranean formation. The downhole tool is positioned in a wellbore penetrating the subterranean formation. The probe includes a platform operatively connected to the downhole tool, at least one packer operatively connected to the platform, the packer having at least one hole extending therethrough and at least one embedded member disposed in the packer for enhancing the operation of the packer as it is pressed against the wellbore wall.

Claims

1. A probe for establishing fluid communication between a downhole tool and a subterranean formation, the downhole tool positioned in a wellbore penetrating the subterranean formation, comprising:

a platform operatively connected to the downhole tool;

a packer operatively connected to the platform, the packer having at least one hole extending therethrough; and

embedded members disposed in the packer for enhancing the operation of the packer as it is pressed against the wellbore wall whereby the packer forms a seal with the wellbore wall;

wherein the embedded members substantially comprise metal, and wherein the packer is forty percent elastomeric and sixty percent metal;

wherein the elastomeric forty percent of the packer substantially comprises a composite material comprising rubber and polytetrafluorethylene (TEFLON); and

wherein the embedded members include;

and

a plurality of metal wires that reinforce the packer and that are more numerous near inner and outer peripheries of the packer and less numerous in a sealing area between the inner and outer peripheries.

2. An apparatus, comprising:

a downhole tool configured to be positioned in a wellbore penetrating a subterranean formation, wherein the downhole tool comprises;

a probe configured to establish fluid communication between the downhole tool and the subterranean formation, wherein the probe comprises;

a platform operatively connected to the downhole tool; and

a packer operatively connected to the platform, wherein;

the packer has a hole extending therethrough a central axis of the packer;

a first portion of the packer comprises 40% of the packer;

a second portion of the packer comprises 60% of the packer;

the first portion of the packer is elastomeric comprising a composite of rubber and polytetrafluorethylene (TEFLON);

the second portion of the packer comprises a plurality of embedded metal members disposed in the first portion;

the plurality of embedded metal members are more numerous near inner and outer peripheries of the packer and less numerous in a sealing area between the inner and outer peripheries; and

the plurality of embedded metal members comprises a plurality of metal reinforcement members positioned near the outer periphery of the packer.