FIELD: oil producing industry.
SUBSTANCE: device is designed for use in insert oil well pumps for recovery of liquid from well. Proposed device contains two-stage fastening housing with sealing members installed on both stages. Two stage landing nipple is installed on lifting tube string. Two-stage fastening housing and landing nipple form vacuum chamber. Sealing members of both stages are made in form of single-acting elastic cups installed to scheme providing their operation to ensure sealing under action of pressure differentials directed to side of vacuum chamber.
EFFECT: improved reliability in service.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| LOCK SUPPORT OF INSERT OIL-WELL PUMP | 1992 |
|
RU2066789C1 |
| DOWNHOLE PIPE PUNCH | 2001 |
|
RU2206707C2 |
| 0 |
|
SU436922A1 | |
| XIRXULATION VALVE | 2001 |
|
RU2206714C2 |
| BOREHOLE PUNCH FOR PIPES | 1993 |
|
RU2057894C1 |
| DOWNHOLE DRIFT FOR PIPES | 2001 |
|
RU2202035C2 |
| DOWNHOLE PIPE DRIFT | 2001 |
|
RU2198997C1 |
| LOCKING SUPPORT OF WELL SUCKER=ROD PUMP | 0 |
|
SU1059252A2 |
| WELL PUNCH-PERFORATOR | 2002 |
|
RU2211310C1 |
| PUMP ROD EXTRACTOR | 1999 |
|
RU2170327C1 |
