DEPRESSANT OF COMPLEX ACTION AND PROCEDURE FOR TRANSPORTING WAXY-RESIN AND LOW-WATERED OIL WITH USAGE OF THIS DEPRESSANT Russian patent published in 2011 - IPC C10L1/18 C10L1/10 

FIELD: oil and gas production.

SUBSTANCE: invention can be used for reducing chill point and dynamic viscosity and also for prevention of formation of pyrobitumen waxy-resin sediments (PWRS) at oil transportation and storage. Here is disclosed the depressant of complex action including ethylene copolymer with polar monomer, non-ionogenic surface active substance (NSAS) and aromatic solvent. Also, the depressant additionally contains triple copolymer of vinyl-pyrrolidone, alkyl-acrylate and methacrylic acid and/or copolymer of isobutylene with isoprene at the following ratio of components, wt %: ethylene copolymer with polar monomer - 2.0 - 30.0; triple copolymer of vinyl-pyrrolidone, alkyl-acrylate and methacrylic acid and/or copolymer of isobutylene with isoprene 5.0 - 10.0; non-ionogenic surface active substance - 1.0 - 10.0; aromatic solvent - the rest. Additionally, there is disclosed the procedure for transporting waxy-resin and low watered oil consisting in introducing reagent into oil flow. As the reagent there is used the above described depressant of complex action. The depressant is introduced into oil flow proportionally.

EFFECT: simplified oil processing, reduced cost of oil transporting.

2 cl, 37 ex, 3 tbl