| 摘要 |
oil producing industry, particularly, intensification of oil recovery from nonuniform permeable flooded formations. SUBSTANCE: method includes injection into producing formation of polymer suspension in liquid taken in form of formation water of definite mineralization. Time of delivery of polymer with concentration of 0.01-1.0 wt.% into oil formation. Upon expiration of this time, polymer swells and dissolves in formation water. In this case, amount of injected suspension does not exceed 50-70% of well injectivity value with injection pressure not exceeding the initial pressure of water injection. EFFECT: increased coverage with flooding of water- encroached nonuniform permeable oil formation with use of water- soluble polymer. 1 dwg |
