Downhole fluid communication apparatus and method

• US 8,561,686 B2
• Filed: 08/05/2011
• Issued: 10/22/2013
• 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): Ro, Yong-Suk (Philip)
• Application Number:
  US13/198,973
• Publication Number:
  US 20110284212A1
• Time in Patent Office: 809 Days
• Field of Search: 166/100, 166/264, 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 is provided. 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. An apparatus 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; and

a packer connected to the platform and comprising;

a sealing portion;

an inner support member defining an inlet through the sealing portion; and

a support system positioned about a periphery of the sealing portion and comprising an inner ring and an outer ring, wherein the inner ring is anchored to the sealing portion and slidably positioned within the outer ring to telescopically extend and retract within the outer ring wherein the inner and outer rings are each provided with corresponding lips configured to cooperatively engage to limit travel of the inner ring in the outer ring.

2. The apparatus of claim 1 wherein the lip of the inner ring extends outwardly from the inner ring and the lip of the outer ring extends inwardly from the outer ring.

3. An apparatus 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; and

a packer connected to the platform and comprising;

a sealing portion;

an inner support member defining an inlet through the sealing portion; and

a support system positioned about a periphery of the sealing portion and comprising an inner ring and an outer ring, wherein the inner ring is anchored to the sealing portion and slidably positioned within the outer ring to telescopically extend and retract within the outer ring wherein;

the sealing portion comprises an elastomeric material;

the inner support member is embedded in the sealing portion;

the inner ring is a metallic inner ring;

the outer ring is a metallic outer ring;

the inner ring is embedded in the sealing portion;

the inner and outer rings are each provided with corresponding lips configured to cooperatively engage to limit relative movement of the inner ring within the outer ring;

the inner support member comprises a lip extending outwardly over an inner radius of an outer surface of the sealing portion;

at least one of the sealing portion and the outer ring is coupled to the platform; and

the sealing portion has an outer surface that is concave except for a raised convex portion surrounding the inlet and extending from the platform past the inner support member.

4. The apparatus of claim 3 wherein the packer further comprises a plurality of embedded reinforcement members disposed in the sealing portion.

5. The apparatus of claim 3 wherein the packer further comprises a plurality of embedded reinforcement members disposed in the sealing portion, and wherein the embedded members are more numerous near the inner support member and the support system and less numerous in a sealing area between the inner support member and the support system.