Dual-stimulation swelling gel particles used in carbon dioxide flooding process to prevent gas channeling and preparation method thereof
A technology of carbon dioxide and oil displacement process, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of high industrial cost, dehydration shrinkage, high concentration requirements, etc., and achieve the effect of convenient preparation method and good application prospect
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Embodiment 1
[0034]
[0035] Dissolve 56.80g of AM monomer in 180.00g of pure water, add 0.04g of cross-linking agent MBA, 3.60g of SBMA, and 2.08g of DMAEMA to the solution in sequence, and stir until it becomes clear to obtain a mixed monomer solution polymerization system. Nitrogen was passed through the system to remove oxygen for 30 minutes; 0.12g of potassium persulfate was weighed and dissolved in 6.00g of water to prepare an initiator solution; the mixed monomer solution and the initiator solution were mixed, and the mixed reaction solution was reacted in a water bath at 40°C After 10.0 hours, continue to heat up to 60°C for 8.0 hours to increase the conversion rate. After the reaction is completed, a copolymerized gel is obtained, and the dried product is pulverized with a 12000r / min universal pulverizer. The crushing operation is as follows: after crushing for 2 seconds, stand still for 8 seconds, repeat this cycle operation ten times, and use fans to dissipate heat. The obta...
Embodiment 2
[0037]
[0038] Dissolve 56.80g of AM monomer in 180.00g of pure water, add 0.04g of cross-linking agent MBA, 3.60g of SBMA, and 4.16g of DMAEMA to the solution in sequence, and stir until it becomes clear to obtain a mixed monomer solution polymerization system. Nitrogen was passed through the system to remove oxygen for 30 minutes; 0.12g of potassium persulfate was weighed and dissolved in 6.00g of water to prepare an initiator solution; the mixed monomer solution and the initiator solution were mixed, and the mixed reaction solution was reacted in a water bath at 40°C After 10.0 hours, continue to heat up to 60°C for 8.0 hours to increase the conversion rate. After the reaction is completed, a copolymerized gel is obtained, and the dried product is pulverized with a 12000r / min universal pulverizer. The crushing operation is as follows: after crushing for 2 seconds, stand still for 8 seconds, repeat this cycle operation ten times, and use fans to dissipate heat. The obta...
Embodiment 3
[0040]
[0041]
[0042] Dissolve 56.80g of AM monomer in 180.00g of pure water, add 0.02g of cross-linking agent MBA, 3.60g of SBMA, 4.16g of DMAEMA to the solution in turn, stir until clarified to obtain a mixed monomer solution polymerization system, and add to the polymerization system while stirring evenly Nitrogen was passed through the system to remove oxygen for 30 minutes; 0.12g of potassium persulfate was weighed and dissolved in 6.00g of water to prepare an initiator solution; the mixed monomer solution and the initiator solution were mixed, and the mixed reaction solution was reacted in a water bath at 40°C After 10.0 hours, continue to heat up to 60°C for 8.0 hours to increase the conversion rate. After the reaction is completed, a copolymerized gel is obtained, and the dried product is pulverized with a 12000r / min universal pulverizer. The crushing operation is as follows: after crushing for 2 seconds, stand still for 8 seconds, repeat this cycle operation ...
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