Wellbore servicing compositions and methods of making and using same

Patent metadata

Field	Value
Publication number	US-9809736-B2
Application number	US-201213601365-A
Country	US
Kind code	B2
Filing date	Aug 31, 2012
Priority date	Aug 31, 2012
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A method of servicing a wellbore in a subterranean formation comprising placing a wellbore servicing fluid comprising a lost-circulation composite material into a wellbore, wherein the lost-circulation composite material comprises a swellable component and a reinforcing component. A wellbore servicing fluid comprising a reinforcing component disposed within a swellable component wherein the swellable component comprises a crosslinked polymer.

First claim

What is claimed is:

1. A wellbore servicing fluid comprising:
a lost-circulation composite material comprising a reinforcing component disposed within a water-swellable component, wherein the water-swellable component comprises a superabsorber,
wherein the superabsorber is selected from the group consisting of crosslinked hydrolyzed polyacrylonitrile; hydroxyethyl cellulose; crosslinked polymers of two or more of allylsulfonates; 2-acrylamido-2-methyl-1-propanesulfonic acid; 3-allyloxy-2-hydroxy-1-propane-sulfonic acid; and combinations thereof;
wherein the reinforcing component is selected from the group consisting of cotton, wool, silk, hemp, linen, jute, sisal, and combinations thereof; and
wherein the superabsorber, the reinforcing component, or both, are corona treated, plasma treated, photochemically treated, or any combination thereof, to promote formation of the lost-circulation composite material.

2. The fluid of claim 1 , wherein the reinforcing component has a tensile strength of from about 1 MPa to about 100,000 MPa.

3. The fluid of claim 1 , wherein a ratio of the reinforcing component to the water-swellable component is from about 1:1 to about 1:1000.

4. The fluid of claim 1 , wherein the lost-circulation composite material is present in the wellbore servicing fluid in an amount of from about 0.5 ppb to about 150 ppb.

5. The fluid of claim 1 , wherein the lost-circulation composite material is encapsulated.

6. A method of servicing a wellbore in a subterranean formation comprising:
providing a reinforcing component and a swellable component comprising a superabsorber,
wherein the superabsorber is selected from the group consisting of crosslinked hydrolyzed polyacrylonitrile; hydroxyethyl cellulose; crosslinked polymers of two or more of allylsulfonates; 2-acrylamido-2-methyl-1-propanesulfonic acid; 3-allyloxy-2-hydroxy-1-propane-sulfonic acid; and combinations thereof, and
wherein the reinforcing component is selected from the group consisting of cotton, wool, silk, hemp, linen, jute, sisal, and combinations thereof;

subjecting the superabsorber, the reinforcing component, or both, to corona treatment, plasma treatment, photochemical treatment, or combinations thereof;
swelling the superabsorber in the presence of water and the reinforcing component to form a lost-circulation composite material;
dehydrating the lost-circulation composite material;
adding the dehydrated lost-circulation composite material to a wellbore servicing fluid; and
placing the wellbore servicing fluid into the wellbore.

7. The method of claim 6 wherein the swellable component further comprises an oil-swellable material.

8. The method of claim 7 wherein the oil-swellable material comprises an oil-swellable elastomer.

9. The method of claim 8 wherein the oil-swellable elastomer comprises natural rubber, acrylate butadiene rubber, polyacrylate rubber, isoprene rubber, choloroprene rubber, butyl rubber, brominated butyl rubber, chlorinated butyl rubber, chlorinated polyethylene, neoprene rubber, styrene butadiene copolymer rubber, styrene butadiene block copolymer rubber, sulphonated polyethylene, ethylene acrylate rubber, epichlorohydrin ethylene oxide copolymer, ethylene-propylene rubber, ethylene-propylene-diene terpolymer rubber, ethylene vinyl acetate copolymer, fluorosilicone rubbers, silicone rubbers, poly 2,2,1-bicyclo heptene (polynorborneane), alkylstyrene, crosslinked vinyl acrylate copolymers, or combinations thereof.

10. The method of claim 6 wherein the reinforcing component has a tensile strength of from about 1 MPa to about 100,000 MPa.

11. The method of claim 6 wherein a ratio of the reinforcing component to the swellable component is from about 1:1 to about 1:1000.

12. The method of claim 6 wherein the lost-circulation composite material is present in the wellbore servicing fluid in an amount of from about 0.5 ppb to about 150 ppb.

13. The method of claim 6 wherein the reinforcing component, swellable component or both are surface-modified prior to introduction to the wellbore servicing fluid.

14. The method of claim 6 wherein the lost-circulation composite material is encapsulated.

15. The method of claim 6 wherein the wellbore servicing fluid comprises a water-based drilling mud or an oil-based drilling mud.

16. The method of claim 6 , further comprising allowing the lost-circulation composite material to enter one or more lost circulation zones.

17. The method of claim 16 , further comprising allowing the lost-circulation composite material to seal the one or more lost circulation zones.

18. The method of claim 6 , further comprising allowing the lost-circulation composite material to form a filtercake on a surface of the formation.

Assignees

• Murphy Robert J
• Miller Matthew L
• Halliburton Energy Services Inc

Inventors

• Murphy Robert J
• Miller Matthew L

Classifications

• C09K8/685

  containing cross-linking agents · CPC title

• E21B21/003

  Means for stopping loss of drilling fluid (plastering the borehole wall E21B33/138) · CPC title

• C09K8/512

  containing cross-linking agents · CPC title

• C09K8/03 Primary

  Specific additives for general use in well-drilling compositions · CPC title

• C09K2208/04

  Hulls, shells or bark containing well drilling or treatment fluids · CPC title