Polymer microsphere water shutoff profile control agent and preparation method thereof
The technology of a water profile control agent and polymer is applied in the field of polymer microsphere water plugging profile control agent and its preparation, which can solve the problems of affecting the oil recovery rate, poor stability of the profile control agent, poor plugging effect, etc. Excellent plugging effect, improved stability, not easy to deform
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Embodiment 1
[0038] This example provides a polymer microsphere water plugging profile control agent, the parts by weight of each component are shown in Table 1, wherein the main agent is: 25 parts of acrylamide, 12 parts of isooctyl acrylate, and 10 parts of N-vinylpyrrolidone parts; additives are: 3 parts of surfactant, 8 parts of bentonite, 2 parts of calcium carbonate. The surfactant is a mixture of alkyl dimethyl betaine and fatty acid sorbitan; the weight ratio of alkyl dimethyl betaine: fatty acid sorbitan is 1:0.3. The crosslinking agent is crosslinking agent JL-1. The dispersion stabilizer is acryloyloxyethyltrimethylammonium chloride. The initiator is azobisisobutylamidine hydrochloride.
Embodiment 2
[0040] This example provides a polymer microsphere water plugging profile control agent, see Table 1 for the parts by weight of each component, wherein the main agent is: 26 parts of acrylamide, 13 parts of isooctyl acrylate, and 11 parts of N-vinylpyrrolidone parts; additives are: 3.5 parts of surfactant, 10 parts of bentonite, 2.2 parts of calcium carbonate. The surfactant is a mixture of alkyl dimethyl betaine and fatty acid sorbitan; the weight ratio of alkyl dimethyl betaine: fatty acid sorbitan is 1:0.3. The crosslinking agent is crosslinking agent JL-1. The dispersion stabilizer is acryloyloxyethyltrimethylammonium chloride. The initiator is ammonium persulfate.
Embodiment 3
[0042] This example provides a polymer microsphere water plugging profile control agent, the parts by weight of each component are shown in Table 1, wherein the main agent is: 27 parts of acrylamide, 14 parts of isooctyl acrylate, and 12 parts of N-vinylpyrrolidone parts; additives are: 3.8 parts of surfactant, 11 parts of bentonite, 2.5 parts of calcium carbonate. The surfactant is a mixture of alkyl dimethyl betaine and fatty acid sorbitan; the weight ratio of alkyl dimethyl betaine: fatty acid sorbitan is 1:0.4. The crosslinking agent is crosslinking agent JL-1. The dispersion stabilizer is acryloyloxyethyltrimethylammonium chloride. The initiator is ammonium persulfate.
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