FIELD: oil production industry. SUBSTANCE: this relates to oil recovery by plunger-operation method, particularly in deep wells. This ensures increased lifting capacity, prolonged service life and improved fatigue strength of flexible pulling member of immersed pumping unit. Device is made up of at least one metal band. Band is made with continuous longitudinal curvature of radius Rc lying within 
, where h - thickness of band, mm; E -modulus of normal elasticity of band, kgf/sq.mm; σ0,2 - yield point of band material, kgf/sq. mm; l - full length of flexible pulling member, mm. EFFECT: higher efficiency. 1 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEEP WELL PLUNGER-TYPE PUMPING UNIT | 1996 |
|
RU2118708C1 |
| DEEP WELL PUMPING UNIT | 1996 |
|
RU2113620C1 |
| DEEP WELL PUMPING UNIT | 1996 |
|
RU2114323C1 |
| METHOD OF TREATMENT OF OIL BY MEANS OF PLUNGER PUMP WITH TRACTIVE MEMBER MADE IN FORM OF BAND STACK AND WELL PUMPING UNIT | 1996 |
|
RU2114322C1 |
| LINEAR TRACTIVE MEMBER OF WELL PUMPING UNIT | 1996 |
|
RU2105195C1 |
| OIL-WELL PUMPING UNIT | 1996 |
|
RU2113621C1 |
| PLANT FOR LIFTING OF LIQUID FROM WELL | 1999 |
|
RU2150608C1 |
| PLANT FOR OIL RECOVERY | 2000 |
|
RU2182220C2 |
| METHOD FOR STRAIGHTENING, MAINLY, THIN NARROW STRIPS AND BELTS | 1996 |
|
RU2112618C1 |
| PLANT TO LIFT FLUID FROM WELL, PROCESS OF ITS OPERATION, WELL PUMP AND HYDRAULIC DRIVE INCORPORATED IN ITS MIX | 1997 |
|
RU2111343C1 |
