Micro-heterogeneous profile control and oil displacement agent, and preparation method thereof
A heterogeneous and flooding agent technology, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., to achieve good expansion slowing effect, increase injection pressure, and expand swept volume
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The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
1. The microscopic heterogeneous regulating and displacing agent of the present invention is formed by polymerization reaction of temperature-resistant and salt-resistant monomers, main agents, initiators, crosslinking agents, emulsifiers, auxiliary agents, dispersion media and water; The weight percentage of the temperature-resistant salt monomer is 1 to 5%, the weight percentage of the main agent is 10 to 30%, the weight percentage of the initiator is 0.1 to 0.3%, the weight percentage of the crosslinking agent is 0.05 to 0.1%, and the emulsifier The weight percentage of the dispersion medium is 10 to 12%, the weight percentage of the dispersion medium is 45 to 65%, the weight percentage of the auxiliary agent is 0.1 to 1%, and the rest is water. Among them, the temperature-resistant and salt-resistant monomer is 2-acrylamido-2-methylpropanesulfonic...
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