| abstract |
The application discloses a fumaric acid pour point depressant for crude oil and a preparation method thereof, belonging to the technical field of pour point depressant for crude oil. The pour point depressant is formed by polymerizing a first prepolymer, a second prepolymer, a third monomer and a fourth monomer, wherein the first prepolymer is formed by prepolymerizing vinyl acetate and the first monomer , the second prepolymer is prepolymerized by fumaric acid and the second monomer. The preparation method of the fumaric acid type pour point depressant for crude oil of the invention is simple, the prepared pour point depressant has good acid resistance and salt resistance, can effectively reduce the freezing point and viscosity of crude oil, and the mutual coordination energy between the monomers Increase the hydrophobicity of pour point depressants, thereby reducing the affinity between crude oil and reservoirs and pipelines, increasing production and transportation. |