PASSIVE DOWNHOLE CHEMICAL RELEASE PACKAGES

• US 20140110102A1
• Filed: 10/19/2012
• Published: 04/24/2014
• Est. Priority Date: 10/19/2012
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Hall, Lee J.
• Granted Patent: US 9,528,338 B2
• Time in Patent Office: Days
• US Class Current: 166/244.1
• CPC Class Codes: C04B 2103/0077 Packaging material remaining in the mixture after the mixing step, e.g. soluble bags containing active ingredients
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C04B 40/0633 Chemical separation of ingredients, e.g. slowly soluble activator
• CPC Class Codes: C09K 8/03 Specific additives for general use in well-drilling compositions
• CPC Class Codes: C09K 8/467 containing additives for specific purposes
• CPC Class Codes: E21B 27/02 Dump bailers, i.e. containers for depositing substances, e.g. cement or acids

Abstract

An apparatus for releasing chemical agents in a well bore, comprising: a packaging material; a chemical agent, wherein the chemical agent is contained within the packaging material; and an adhesive, wherein the adhesive is attached to the packaging material and associated methods.

Claims

1. An apparatus for releasing chemical agents in a well bore, comprising:

a packaging material;

a chemical agent, wherein the chemical agent is contained within the packaging material; and

an adhesive, wherein the adhesive is attached to the packaging material.

2. The apparatus of claim 1, wherein the packaging material comprises at least one material selected from the group consisting of:

polylactic acid;

cellulose;

polysaccharides;

polyethylenes, polyacrylic acids;

polyvinyl alcohols;

urethanes;

epoxies;

silicones;

styrenes;

natural and synthetic sponges;

pumice;

partially pyrolyzed wood;

aerogels;

hydrogels;

fritted metals;

sintered metals;

glasses;

ceramics;

cardboard;

paper; and

woven or non-woven fibrous structures with porosity.

3. The apparatus of claim 1, wherein the adhesive comprises a chemical adhesive or a magnet.

4. The apparatus of claim 1, further comprising a housing which encases at least a portion of the packaging material and the adhesive.

5. The apparatus of claim 4, wherein the housing comprises a perforated section.

6. The apparatus of claim 1, further comprising a pressure activated release mechanism.

7. The apparatus of claim 6, wherein the pressure activated release mechanism comprises a plurality of puncture points displaced between the packaging material and the adhesive.

8. A method of delivering a chemical agent comprising:

providing a downhole chemical release package, the downhole chemical release package comprising a packaging material, a chemical agent contained within the packaging material, and an adhesive attached to the packaging material;

introducing the downhole chemical agent into a subterranean formation; and

allowing the downhole chemical release package to release the chemical agent.

9. The method of claim 8, wherein the packaging material comprises at least one material selected from a group consisting of:

polylactic acid;

cellulose;

polysaccharides;

polyethylenes, polyacrylic acids;

polyvinyl alcohols;

urethanes;

epoxies;

silicones;

styrenes;

natural and synthetic sponges;

pumice;

partially pyrolyzed wood;

aerogels;

hydrogels;

fritted metals;

sintered metals;

glasses;

ceramics;

cardboard;

paper; and

woven or non-woven fibrous structures with porosity.

10. The method of claim 8, wherein the adhesive comprises a chemical adhesive or a magnet.

11. The method of claim 8, wherein the downhole chemical release package further comprises a housing, wherein the housing at least a partially encases the downhole chemical release package.

12. The method of claim 11, wherein the housing comprises a perforated section.

13. The method of claim 8, wherein the downhole chemical release package further comprises a pressure activated release mechanism.

14. The method of claim 13, wherein the pressure activated release mechanism comprises a plurality of puncture points displaced between the packing material and the adhesive.

15. The method of claim 13, wherein allowing the downhole chemical package to release the chemical agent comprises allowing the downhole chemical package to be punctured by the pressure activated release mechanism.

16. The method of claim 8, wherein allowing the downhole chemical package to release the chemical agent comprises allowing the downhole chemical package to at least partially degrade.

17. A method comprising:

providing a tubular;

attaching a downhole chemical release package to the tubular, the downhole chemical release package comprising a packaging material, a chemical agent contained within the packaging material, and an adhesive attached to the packaging material;

introducing the tubular into a subterranean formation; and

allowing the downhole chemical release package to release the chemical agent.

18. The method of claim 17, wherein the packaging material comprises at least one material selected from a group consisting of:

polylactic acid;

cellulose;

polysaccharides;

polyethylenes, polyacrylic acids;

polyvinyl alcohols;

urethanes;

epoxies;

silicones;

styrenes;

natural and synthetic sponges;

pumice;

partially pyrolyzed wood;

aerogels;

hydrogels;

fritted metals;

sintered metals;

glasses;

ceramics;

cardboard;

paper; and

woven or non-woven fibrous structures with porosity.

19. The method of claim 17, wherein allowing the downhole chemical package to release the chemical agent comprises allowing the downhole chemical package to be punctured by a pressure activated release mechanism.

20. The method of claim 17, wherein allowing the downhole chemical package to release the chemical agent comprises allowing the downhole chemical package to at least partially degrade.