Cement with resilient latex polymer

Patent metadata

Field	Value
Publication number	US-2016264841-A1
Application number	US-201315031924-A
Country	US
Kind code	A1
Filing date	Nov 25, 2013
Priority date	Nov 25, 2013
Publication date	Sep 15, 2016
Grant date	—

Abstract

Compositions comprising: (i) a hydraulic cement; and (ii) a polymer comprising at least one monomer having an oxazoline group. Methods of cementing in a well comprising: (A) forming a hydraulic cement composition comprising: (i) a hydraulic cement; (ii) a polymer comprising at least one monomer having an oxazoline group; and (iii) water; (B) introducing the hydraulic cement composition into the well.

First claim

What is claimed is:

1 . A composition comprising:
(i) a hydraulic cement; and (ii) a polymer comprising at least one monomer having an oxazoline group.

2 . The composition according to claim 1 , wherein the polymer comprises at least one mono-vinyl monomer and at least one di-vinyl monomer.

3 . The composition according to claim 2 , wherein the mono-vinyl monomer is selected from the group consisting of: acrylic acid, methacrylic acid, acrylic acid esters, methacrylic acid esters, 2-isopropenyl-2-oxazoline, styrene, acrylonitrile, alkyl vinyl ethers, and alkoxy vinyl ethers.

4 . The composition according to claim 2 , wherein the di-vinyl monomer is selected from the group consisting of: alkane diol diacrylates, alkane diol dimethacrylates, alkene glycol diacrylates, alkene glycol dimethacrylates, alkane diol divinyl ethers, alkene glycol divinylethers, divinylbenzene, allyl methacrylate, and allyl acrylate.

5 . The composition according to claim 1 , wherein the polymer comprises monomers of styrene, butyl acrylate, divinylbenzene, and 2-isopropenyl-2-oxazoline.

6 . The composition according to claim 5 , wherein the molar proportions of the monomers in the polymer are in the range of styrene about 10% to about 35%, butyl acrylate about 25% to about 60%, divinylbenzene about 2% to about 15%, and 2-isopropenyl-2-oxazoline about 10 to about 40%.

7 . The composition according to claim 1 , wherein the polymer is in the form of a latex.

8 . The composition according to claim 1 , wherein the hydraulic cement comprises a Portland cement.

9 . The composition according to claim 4 , wherein the composition includes water and is in the form of a slurry.

10 . The composition according to claim 1 , additionally comprising one or more additives selected from the group consisting of: a silica particulate, a retarder, a dispersant, an inorganic salt, a stabilizer, a defoamer, fly ash, and a weighting agent.

11 . A method of cementing in a well, the method comprising:
(A) forming a hydraulic cement composition comprising:
(i) a hydraulic cement;
(ii) a polymer comprising at least one monomer having an oxazoline group; and
(iii) water;
(B) introducing the hydraulic cement composition into the well.

12 . The method according to claim 11 , wherein the polymer comprises at least one mono-vinyl monomer and at least one di-vinyl monomer.

13 . The method according to claim 12 , wherein the mono-vinyl monomer is selected from the group consisting of: acrylic acid, methacrylic acid, acrylic acid esters, methacrylic acid esters, 2-isopropenyl-2-oxazoline, styrene, acrylonitrile, alkyl vinyl ethers, and alkoxy vinyl ethers.

14 . The method according to claim 12 , wherein the di-vinyl monomer is selected from the group consisting of: alkane diol diacrylates, alkane diol dimethacrylates, alkene glycol diacrylates, alkene glycol dimethacrylates, alkane diol divinyl ethers, alkene glycol divinylethers, divinylbenzene, allyl methacrylate, and allyl acrylate.

15 . The method according to claim 11 , wherein the polymer comprises monomers of styrene, butyl acrylate, divinylbenzene, and 2-isopropenyl-2-oxazoline.

16 . The method according to claim 15 , wherein the molar proportions of the monomers in the polymer are in the range of styrene about 10% to about 35%, butyl acrylate about 25% to about 60%, divinylbenzene about 2% to about 15%, and 2-isopropenyl-2-oxazoline about 10 to about 40%.

17 . The method according to claim 11 , wherein the polymer is in the form of a latex.

18 . The method according to claim 11 , wherein the hydraulic cement comprises a Portland cement.

19 . The method according to claim 11 , wherein the hydraulic cement composition includes water and is in the form of a slurry.

20 . The method according to any one of claim 11 , wherein the hydraulic cement composition additionally comprises one or more additives selected from the group consisting of: a silica particulate, a retarder, a dispersant, an inorganic salt, a stabilizer, a defoamer, fly ash, and a weighting agent.

Assignees

• Halliburton Energy Services Inc

Inventors

• Muthusamy Ramesh
• Koyitti Remitha Anandoth
• Deshpande Abhimanyu Pramod
• Bose Sohini
• Patil Rahul Chandrakant

Classifications

• C04B28/02 Primary

  containing hydraulic cements other than calcium sulfates · CPC title

• C09K8/467 Primary

  containing additives for specific purposes · CPC title

• C04B24/2688

  Copolymers containing at least three different monomers · CPC title

• E21B33/14

  for cementing casings into boreholes · CPC title

• E21B33/138

  Plastering the borehole wall; Injecting into the formation · CPC title