FIELD: pump making. SUBSTANCE: bottom with increased weight is fabricated in the form of hollow cylinder which has longitudinal cuts on axes laying in one plane. Plane passing through generating line and longitudinal axis of cylinder is perpendicular to plane passing through axis of rollers. EFFECT: increased efficiency. 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SUCKER ROD COUPLING | 1990 |
|
RU2017930C1 |
| OIL-WELL SUCKER-ROD PUMPING UNIT | 0 |
|
SU1645617A1 |
| PROTECTOR | 1990 |
|
RU2026952C1 |
| WELL SUCKER-ROD PUMPING UNIT | 0 |
|
SU823637A1 |
| DEVICE FOR FORMING SLOTS IN WELL WALLS | 1990 |
|
RU2030563C1 |
| WELL SUCKER-ROD PUMPING UNIT | 0 |
|
SU1291721A1 |
| SUCKER ROD PROTECTOR | 1988 |
|
RU2012769C1 |
| METHOD OF DETERMINING VARIATIONS OF SEAM PRESSURE IN WELL | 0 |
|
SU956774A1 |
| PROTECTING DEVICE, PARTICULARLY, FOR PUMPING RODS | 0 |
|
SU911007A1 |
| WELL PUMP UNIT FOR PRODUCTION OF OIL | 0 |
|
SU1395852A1 |
