FIELD: oil and gas producing industry; draining of liquid from space of rising pipes. SUBSTANCE: spool placed inside housing with drain holes has cross rod. Bushing on end of plunger is provided with slot to embrace cross of spool and has projection for fitting the plunger on stop in housing over spool. EFFECT: enlarged operating capabilities. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TRAP | 1993 |
|
RU2085709C1 |
| JERKER PUMP UNIT | 1991 |
|
RU2027905C1 |
| SUCKER-ROD WELL PUMP | 0 |
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| WELL HEAD SHUT-OFF VALVE | 1993 |
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| METHOD OF MOUNTING BORE HOLE SUCKER-ROD PUMP | 0 |
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| METHOD OF TREATING BOTTOM-HOLE ZONE OF RESERVOIR | 1994 |
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| POWER NUT-DRIVER | 1993 |
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| METHOD FOR DEVELOPMENT OF TERRIGENOUS OIL BED | 1994 |
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| METHOD FOR OIL POOL DEVELOPMENT WITH FRACTURED RESERVOIR | 1991 |
|
RU2011806C1 |
