Synthesis of organic-inorganic hybrid water soluble polymers in oil field applications

Patent metadata

Field	Value
Publication number	US-10030091-B2
Application number	US-201414901118-A
Country	US
Kind code	B2
Filing date	Sep 11, 2014
Priority date	Sep 11, 2013
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

Compositions may include a monomer, an organic crosslinker, an inorganic crosslinker, and an initiator. Furthermore, compositions may include at least one monomer and triethoxyvinylsilane (TEVS) to provide crosslinking among the at least one monomer.

First claim

What is claimed is:

1. A composition comprising:
a polymer formed from:
at least one monomer comprising N-vinyl-2-pyrrolidone (VP);
a first crosslinker having a formula:

wherein each R is selected from H or

with the provisio that at least two R are

triethoxyvinylsilane (TEVS) as a second crosslinker; and
an initiator.

2. The composition of claim 1 , wherein the at least one monomer further comprises at least one selected from the group consisting of: 2-acrylarnido-2-methylpropanesulfonate (AMPS), acrylamide (AM), methacrylamide N,N dimethyl acrylamide (DMAM), N,N dimethyl methacrylarnide, dimethylaminopropyl methacrylamide, N-vinyl-3-methyl-2-pyrrolidone, N-vinyl-4,4-diethyl-2-pyrrolidone, 5-isobutyl-2-pyrrolidone alkyl oxazoline, and 2-ethyl2-oxazoline.

3. The composition of claim 1 , wherein the at least one monomer comprises at least one selected from the group consisting of: 2-acrylamido-2-methylpropanesulfonate (AMPS) in amounts from about 5 wt % to 50 wt % of the composition as a whole, acrylamide (AM) in amounts from about 5% to 50 wt % of the composition as a whole, and the N-vinyl-2-pyrrolidone (VP) in amounts from about 1 wt % to 60 wt % of the composition as a whole.

4. The composition of claim 1 , wherein the at least one monomer comprises a vinyl amide group where the vinyl group and the amide group are directly bound to one another.

5. The composition of claim 1 , wherein the initiator comprises a nitrile functional group.

6. The composition of claim 1 , further comprising a fluid comprising a brine in which the polymer is dispersed.

7. The composition of claim 1 , further comprising at least one additive selected from the group consisting of: a thermal stabilizer, a pH buffer, a bridging material, and a fluid loss additive.

8. The composition of claim 1 , wherein the at least one monomer consists of 2-acrylamido-2-methylpropanesulfonate (AMPS) in amounts from about 5 wt % to 50 wt % of the composition as a whole, acrylamide (AM) in amounts from about 5% to 50 wt % of the composition as a whole, and the N-vinyl-2-pyrrolidone (VP) in amounts from about 1 wt % to 60 wt % of the composition as a whole.

9. The composition of claim 1 , wherein the N-vinyl-2-pyrrolidone (VP) is in amounts from about 1 wt % to 60 wt % of the composition as a whole.

Assignees

• Mi Llc

Inventors

• Sui Changping
• Panamarathupalayam Balakrishnan

Classifications

• C08F236/22

  the radical having three or more carbon-to-carbon double bonds · CPC title

• C08K5/5425

  containing at least one C=C bond · CPC title

• C08F226/10

  N-Vinyl-pyrrolidone · CPC title

• C08F216/125

  Monomers containing two or more unsaturated aliphatic radicals, e.g. trimethylolpropane triallyl ether or pentaerythritol triallyl ether · CPC title

• C08F220/54

  Amides {, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide} · CPC title