FIELD: joining of pump rods, casing pipes, pump-compressor tubes in oil and gas wells is designed for using in gas-and-oil producing industry.
SUBSTANCE: the joining has screwed ends and coupling boxes. On one end there is a cylindrical turning with a circular groove and a ledge with attached surface. The last one is fulfilled under an angle β to the axle of the joining. Corresponding cylindrical turning with a circular groove and a ledge with attached surface under an angle β to the axle are made on the other end of the joining. The connecting coupling box is fulfilled in the shape of a self-locking bushing with a channel for interacting with the cylindrical turning of the joining ends and retainer sectors. The last are fulfilled with an eccentricity ▵ relatively to the exterior diameter of the bushing for interacting with the circular grooves on the cylindrical turnings and for fixation of the joining in the well.
EFFECT: secures prolongation of exploitation term, reliability of capsulation of the joining.
1 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| CONNECTION OF CASING STRINGS OR PUMP-COMPRESSOR PIPES WITH CONICAL THREADED ENDS IN OIL AND GAS WELLS | 2005 |
|
RU2294477C2 |
| CONNECTION OF CASING PIPES OR TUBING STRINGS WITH TAPER THREAD ON ENDS IN OIL AND GAS WELLS | 2008 |
|
RU2406004C2 |
| COUPLING TO CONNECT CASING PIPES OR TUBING STRINGS IN OIL AND GAS WELLS | 2003 |
|
RU2269640C2 |
| SHOCK ABSORBER OF ELECTRIC CENTRIFUGAL PUMP IN WELL | 2010 |
|
RU2446315C2 |
| UNIVERSAL CASING HEAD FOR CONNECTIONS OF CASING STRINGS ON WELLHEAD | 1999 |
|
RU2173764C2 |
| PROTECTOR | 2009 |
|
RU2403372C2 |
| PROTECTOR FOR PROTECTION BOTH OF POWER CABLE, AND CAPILLARY TUBE IN WELL | 2008 |
|
RU2393325C1 |
| PROTECTOR | 2009 |
|
RU2403373C1 |
| PROTECTOR | 2009 |
|
RU2402671C1 |
| PROTECTOR | 2009 |
|
RU2402672C1 |
