FIELD: oil and gas production.
SUBSTANCE: lubricator for survey of oil and gas wells consists of preventor, of receiving chamber and of device for flexible member contact sealing. A packing device of the lubricator corresponds to a unit containing a contact seal, a press-on sleeve, a spring-loaded piston and a threaded bushing. The spring-loaded piston is made in form of an overturned cartridge with the threaded bushing as a bottom; the piston is donned on a stop of the seal positioned in a cavity of the cartridge. Such design of the lubricator ensures seal pressing-on with threaded bushing or its loading by means of spring-loaded piston independently from each other.
EFFECT: increased service life of lubricator unit, reduced leak of well fluid into atmosphere, improved ecology and raised safety of operations.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| LUBRICATOR FOR INVESTIGATION OF OIL AND GAS WELLS WITH HIGH EXCESS PRESSURE AT HEAD | 2010 |
|
RU2456430C1 |
| LUBRICATOR FOR INVESTIGATING BOREHOLES | 0 |
|
SU643623A1 |
| SEALING DEVICE | 2004 |
|
RU2289674C2 |
| DEVICE FOR WELLHEAD SEALING, UNIT OF SEALS AND UNIT OF STOP SLIPS | 1995 |
|
RU2088745C1 |
| WELL HEAD SEALING DEVICE | 2004 |
|
RU2274728C1 |
| LUBRICATOR | 2009 |
|
RU2388898C1 |
| DEVICE FOR LOWERING AND EXTRACTING INSTRUMENTS TO/FROM BOREHOLE | 0 |
|
SU1106894A1 |
| PIPE SEALING UNIT FOR DIE PREVENTER | 2001 |
|
RU2209925C2 |
| WELL MOUTH SEALING DEVICE | 0 |
|
SU715770A1 |
| WELL HEAD SEALING DEVICE | 2004 |
|
RU2261979C1 |
