Carbon dioxide capturing polymeric system for water shutoff applications
A treatment fluid and method for water shut-off applications containing an amine-functionalized solid support, an epoxy resin, a second curing agent, and a carrier fluid. Prior to use of the treatment fluid, the amine-functionalized solid support has reacted with carbon dioxide to produce a carbamate-functionalized solid support. The treatment fluid is introduced into a geological formation with high-permeability pathways, curing the epoxy resin, and sealing these pathways.
1. A treatment fluid for water shut-off applications, the treatment fluid comprising:
an amine-functionalized solid support comprising a porous adsorbent material functionalized with an amine-rich compound selected from the group consisting of monoethanolamine (MEA), diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), pentaethylenehexamine (PEHA), 2-amino-2-methyl-1-propanol (AMP), diethanolamine, polyethyleneimine, polyallylamine, polyvinylamine, and polydiallylamine;
an epoxy resin selected from the group consisting of bis-phenol A epoxy, bis-phenol F epoxy, aliphatic epoxy, and cycloaliphatic epoxy;
a second curing agent selected from the group consisting of a dicyandiamide and a dihydrazide; and
a carrier fluid selected from the group consisting of water, glycol ether, ethylene glycol, dimethyl sulfoxide, dimethyl formamide, and petroleum distillate fractions,
where the amine-functionalized solid support has been previously reacted with carbon dioxide to produce a carbamate-functionalized solid support.
2. The treatment fluid of claim 1 , further comprising one or more surfactants selected from the group consisting of silicone, fatty acid ethoxylate, alkyl phenol ethoxylate, sorbitan ester ethoxylate, ethylene oxide-propylene oxide block copolymer, alcohol sulfate, alcohol ethoxy sulfate, alkylbenzene sulfonate, and betaine surfactants.
3. The treatment fluid of claim 1 , further comprising an accelerator selected from the group consisting of a tertiary amine, an imidazole, and an aromatic amine.
4. The treatment fluid of claim 1 , further comprising a pH adjusting agent selected from the group consisting of sodium hydroxide, potassium hydroxide, and sodium carbonate.
5. The treatment fluid of claim 1 , where the porous adsorbent material is selected from the group consisting of silica materials, carbon materials, zeolites, and metal-organic frameworks (MOFs).
6. The treatment fluid of claim 1 , where the amine-rich compound is physically impregnated into the porous adsorbent material.
7. The treatment fluid of claim 1 , where the second curing agent concentration in the treatment fluid is in the range from about 0.5 wt % to about 30 wt %.
8. The treatment fluid of claim 1 , where the carrier fluid concentration in the treatment fluid is in the range from about 10 wt % to about 90 wt %.
9. The treatment fluid of claim 1 , where the amine-functionalized solid support concentration in the treatment fluid is in the range from about 0.1 wt % to about 10 wt %.
10. The treatment fluid of claim 1 , where the epoxy resin concentration in the treatment fluid is in the range from about 5 wt % to about 50 wt %.