Traceable polymeric additives for use in subterranean formations

Patent metadata

Field	Value
Publication number	US-9976383-B2
Application number	US-201715412875-A
Country	US
Kind code	B2
Filing date	Jan 23, 2017
Priority date	Nov 22, 2013
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

Disclosed are traceable polymeric additives that comprise a tagging material and methods of using the traceable polymeric additives in subterranean applications, such as cementing. An embodiment discloses a well treatment composition comprising a base fluid and a traceable polymeric additive comprising a polymer and a tagging material.

First claim

What is claimed is:

1. A well treatment system comprising:
a treatment fluid for introduction into a wellbore, wherein the treatment fluid comprises a base fluid, a hydraulic cement, and a traceable polymeric additive comprising a swellable polymer and a tagging material; wherein the traceable polymeric additive is particulate in form; wherein the base fluid comprises water; wherein the traceable polymeric additive is present in the base fluid in an amount of about 1% to about 30% by weight of the hydraulic cement; wherein the traceable polymeric additive has a particle size in a range of from about 300 microns to about 1500 microns; wherein the tagging material comprises a thermal neutron absorbing material; wherein a weight ratio of the swellable polymer to the tagging material is about 3:1 to about 1:1; and
a logging tool for running a neutron log in the wellbore to detect the traceable polymeric additive in the wellbore, wherein the logging tool further comprises a thermal neutron detector, wherein the thermal neutron detector detects thermal neutrons produced and backscattered in the wellbore.

2. The well treatment system of claim 1 wherein the thermal neutron absorbing material is selected from the group consisting of cadmium, boron, gadolinium, iridium, boron carbide, boron nitride, boric acid, boron concentrated glass, zinc borate, borax, gadolinium oxide, gadolinium acetate, gadolinium concentrated glass, and any combination thereof.

3. The well treatment system of claim 1 wherein at least a portion of the tagging material is dispersed in the swellable polymer or present in a coating on the swellable polymer.

4. The well treatment system of claim 1 wherein the swellable polymer comprises at least one elastomer selected from the group consisting of natural rubber, acrylate butadiene rubber, polyacrylate rubber, isoprene rubber, choloroprene rubber, butyl rubber, brominated butyl rubber, chlorinated butyl rubber, chlorinated polyethylene rubber, neoprene rubber, styrene butadiene copolymer rubber, sulphonated polyethylene, ethylene acrylate rubber, epichlorohydrin ethylene oxide copolymer rubber, ethylene-propylene rubber, ethylene-propylene-diene terpolymer rubber, ethylene vinyl acetate copolymer, a fluorosilicone rubber, a silicone rubber, poly 2,2,1-bicyclo heptene, alkylstyrene, a block copolymer of styrene-butadiene rubber, nitrile rubber, hydrogenated nitrile rubber, a fluoro rubber, a perfluoro rubber, a tetrafluorethylene/propylene, an isobutylene maleic anhydride, and any combination thereof.

5. The well treatment system of claim 1 wherein the swellable polymer comprises at least one swellable polymer selected from the group consisting of polymethacrylate, polyacrylamide, a non-soluble acrylic polymer, a starch-polyacrylate acid graft copolymer, polyethylene oxide polymer, a carboxymethyl cellulose polymer, poly(acrylic acid), poly(acrylic-co-acrylamide), graft-poly(ethylene oxide) of poly(acrylic acid), poly(2-hydroxyethyl methacrylate), poly(2-hydroxypropyl methacrylate), polyvinyl alcohol cyclic acid anhydride graft copolymer, isobutylene maleic anhydride, vinylacetate-acrylate copolymer, a starch-polyacrylonitrile graft copolymer, and any combination thereof.

6. A well treatment system comprising:
a base fluid;
a hydraulic cement;
a traceable polymeric additive wherein the traceable polymeric additive is particulate in form and comprises a swellable polymer and a tagging material; wherein at least a portion of the tagging material is present in a coating on the polymer, wherein the traceable polymeric additive is positioned in a wellbore;
wherein the tagging material comprises a thermal neutron absorbing material;
wherein a weight ratio of the swellable polymer to the tagging material is about 99:1 to about 0.1:1; and
wherein the swellable polymer comprises at least one polymer selected from the group consisting of a water swellable polymer, oil swellable polymer, dual oil and water swellable polymer, and combinations thereof; and

a logging tool for running a neutron log in a wellbore to detect the traceable polymeric additive in the wellbore, wherein the logging tool further comprises a thermal neutron detector, wherein the thermal neutron detector detects thermal neutrons produced and backscattered in the wellbore.

7. The well treatment system of claim 6 wherein at least a portion of the tagging material is dispersed in the swellable polymer.

8. The well treatment system of claim 6 wherein the thermal neutron absorbing material comprises at least one material selected from the group consisting of cadmium, boron, gadolinium, iridium, boron carbide, boron nitride, boric acid, boron concentrated glass, zinc borate, borax, gadolinium oxide, gadolinium acetate, gadolinium concentrated glass, and any combination thereof.

9. The well treatment system of claim 6 wherein the swellable polymer comprises at least one elastomer selected from the group consisting of natural rubber, acrylate butadiene rubber, polyacrylate rubber, isoprene rubber, choloroprene rubber, butyl rubber, brominated butyl rubber, chlorinated butyl rubber, chlorinated polyethylene rubber, neoprene rubber, styrene butadiene copolymer rubber, sulphonated polyethylene, ethylene acrylate rubber, epichlorohydrin ethylene oxide copolymer rubber, ethylene-propylene rubber, ethylene-propylene-diene terpolymer rubber, ethylene vinyl acetate copolymer, a fluorosilicone rubber, a silicone rubber, poly 2,2,1-bicyclo heptene, alkylstyrene, a block copolymer of styrene-butadiene rubber, nitrile rubber, hydrogenated nitrile rubber, a fluoro rubber, a perfluoro rubber, a tetrafluorethylene/propylene, an isobutylene maleic anhydride, and any combination thereof.

10. The well treatment system of claim 6 , wherein the swellable polymer comprises at least one swellable polymer selected from the group consisting of polymethacrylate, polyacrylamide, a non-soluble acrylic polymer, a starch-polyacrylate acid graft copolymer, polyethylene oxide polymer, a carboxymethyl cellulose polymer, poly(acrylic acid), poly(acrylic-co-acrylamide), graft-poly(ethylene oxide) of poly(acrylic acid), poly(2-hydroxyethyl methacrylate), poly(2-hydroxypropyl methacrylate), polyvinyl alcohol cyclic acid anhydride graft copolymer, isobutylene maleic anhydride, vinylacetate-acrylate copolymer, a starch-polyacrylonitrile graft copolymer, and any combination thereof.

11. The well treatment system of claim 6 , wherein the base fluid comprises water.

12. The well treatment system of claim 11 wherein a treatment fluid has a density of about 4 lb/gal to about 20 lb/gal, the treatment fluid comprising the base fluid, the traceable polymeric additive, and the hydraulic cement.

13. The well treatment system of claim 11 further comprising a dispersant.

Assignees

• Halliburton Energy Services Inc

Inventors

• Gordon Christopher Lynn
• Roddy Craig Wayne
• Chatterji Jiten

Classifications

• E21B43/16

  Enhanced recovery methods for obtaining hydrocarbons · CPC title

• E21B33/13 Primary

  Methods or devices for cementing, for plugging holes, crevices or the like · CPC title

• C09K8/467 Primary

  containing additives for specific purposes · CPC title

• C09K8/46

  containing inorganic binders, e.g. Portland cement · CPC title

• C09K8/40

  Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses · CPC title