FIELD: oil production from wells by deep- well pumping unit, particularly, device for rotation of sucker rod string through some angle. SUBSTANCE: rod rotary mechanism ensure rotation through some angle of sucker rods with scrapers attached to them. EFFECT: higher efficiency of cleaning of operating well from asphalt-resin-paraffin accumulations in wells by means of scrapers. 4 cl, 12 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2160817C2 |
| WELL-HEAD PACKING BOX OF DEEP-PUMP WELL | 1996 |
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RU2680001C1 |
| DEEP-WELL PUMPING UNIT | 0 |
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SU1120089A1 |
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|
RU2077654C1 |
