FIELD: oil and gas industry.
SUBSTANCE: wellhead self-packing seal of sucker-rod pump contains lower and upper sealing elements and a two-size for interior diameter case equipped with a thrust plate whereupon a lower thickened end of the two-size case is located. A differential piston is installed in the case of the wellhead seal; the bigger area of the piston interacts with well liquid, while the less part interacts with a low elastic component. A dividing washer is installed in the upper part of the case; the said washer is rigidly fixed with a dividing bush equipped with a captive nut in the upper part of which there is a cavity hydraulically connected with annular space by means of a high pressure hose. The lower thickened end of the two-size case is equipped with a press-on bushing interacting with the thrust plate by means of a cylinder thread.
EFFECT: ecological safety and simplifying service of the sucker-rod pump equipment of well.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| WELLHEAD GLAND | 2011 |
|
RU2473778C1 |
| SUBSURFACE PUMP ROD SEALING DEVICE | 2000 |
|
RU2201529C2 |
| SELF-PACKING PACKAGE FOR ASYMMETRIC CHEVRON COLLARS | 2014 |
|
RU2607935C2 |
| METHOD FOR SEALING THE WELLHEAD OPERATED BY THE INSTALLATION OF A DOWNHOLE SUCKER ROD PUMP WITH PRODUCT LIFTING ALONG THE PRODUCTION STRING, AND A SELF-ALIGNING WELLHEAD SEAL SEALING DEVICE FOR SEALING THE WELLHEAD WHEN REPLACING STUFFING BOX SEALS | 2021 |
|
RU2769792C1 |
| WELLHEAD BLOWOUT PREVENTION STUFFING BOX WITH HIGH WATER CUT OF WELLS | 2021 |
|
RU2775401C1 |
| DEEP-WELL BULL PUMP | 0 |
|
SU1724935A1 |
| WELL-HEAD PACKING BOX OF DEEP-PUMP WELL | 1996 |
|
RU2112860C1 |
| SUCKER-ROD PUMP ROPE SUSPENSION OF ROD PUMP INSTALLATION | 2009 |
|
RU2407917C1 |
| WELLHEAD SEAL | 2017 |
|
RU2673824C1 |
| WELL PUMPING PLANT FOR INJECTION OF FORMATION WATER INTO OIL-BEARING FORMATION | 2000 |
|
RU2162964C1 |
