Packer assembly with enhanced sealing layer shape

Patent metadata

Field	Value
Publication number	US-9181771-B2
Application number	US-201213645875-A
Country	US
Kind code	B2
Filing date	Oct 5, 2012
Priority date	Oct 5, 2012
Publication date	Nov 10, 2015
Grant date	Nov 10, 2015

Abstract

A packer assembly with an enhanced sealing layer is provided. The packer assembly may have an outer bladder with drains. The packer assembly may further have an inflatable inner packer disposed inside the outer bladder such that inflation of the inner packer causes the outer bladder to expand. End pieces may be coupled to the inner bladder and the outer bladder, and flowlines may be in fluid communication with the drains and the end pieces. A piston ring may reinforce the packer assembly. The piston ring may have three or more passive pistons which expand with the packer assembly during testing.

First claim

What is claimed is:

1. A downhole packer assembly comprising:
an outer bladder having a drain;
an inflatable inner packer disposed within the outer bladder such that inflation of the inner packer causes the outer bladder to expand;
end pieces disposed near ends of the inner bladder and the outer bladder;
a flowline in fluid communication with the drain and the end pieces;
a piston ring in communication with the flowline, wherein the piston ring has a plurality of pistons…

Assignees

• Schlumberger Technology Corp

Inventors

• Corre Pierre-Yves
• Pessin Jean-Louis
• Pop Julian
• Metayer Stéphane
• Yeldell Stephen

Classifications

• E21B33/127 Primary

  Fixed Constructions · mapped topic

• E21B49/082

  Fixed Constructions · mapped topic