CONTROLLED SWELL-RATE SWELLABLE PACKER AND METHOD

• US 20180291701A1
• Filed: 06/05/2018
• Published: 10/11/2018
• Est. Priority Date: 10/16/2012
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Gamstedt, Pontus, Hinke, Jens
• Granted Patent: US 10,443,340 B2
• Time in Patent Office: Days
• CPC Class Codes: B05D 1/36 Successively applying liquids or other fluent materials, e.g. without intermediate treatment
• CPC Class Codes: B05D 7/50 Multilayers
• CPC Class Codes: E21B 33/02 Surface sealing or packing
• CPC Class Codes: E21B 33/12 Packers; Plugs used for cementing E21B33/134, E21B33/16
• CPC Class Codes: E21B 33/1208 characterised by the construction of the sealing or packing means E21B33/1277 takes precedence
• CPC Class Codes: E21B 33/13 Methods or devices for cementing, for plugging holes, crevices or the like

Abstract

A controlled swell-rate swellable packer comprises a mandrel; a sealing element, and a jacket. The sealing element is disposed about at least a portion of the mandrel, and the jacket covers at least a portion of an outer surface of the sealing element. The jacket is configured to substantially prevent fluid communication between a fluid disposed outside of the jacket and the portion of the outer surface of the sealing element covered by the jacket.

Claims

1. A method of making a controlled swell-rate swellable packer, comprising:

applying a mask onto at least a portion of an outer surface of a sealing element, wherein the sealing element comprises a swellable material, and wherein the mask comprises void spaces;

applying a jacket to the sealing element when the mask is applied, wherein the mask substantially prevents the application of the jacket except in the void spaces;

removing the mask after applying the jacket; and

providing a controlled swell-rate swellable packer.

2. The method of claim 1, further comprising applying a retention coating layer onto the outer surface of the sealing element.

3. The method of claim 2, wherein the retention coating layer is applied onto an outer surface of the controlled swell-rate swellable packer subsequent to removing the mask.