DEVICE FOR FIXING SUSPENDED EQUIPMENT TO IMMERSIBLE PUMP OR TO TUBING STRING Russian patent published in 2004 - IPC

FIELD: oil and gas extractive industry.

SUBSTANCE: device has threaded branch pipe fixed to lower portion of immersible pump or tubing string. Device additionally has upper headpiece, cylindrical spring, bushing and lower headpiece with threaded end. Upper end of cylindrical spring is winded on lower end of threaded branch pipe and on the outside is enveloped by upper headpiece. Suspended equipment is fixed to threaded end of lower headpiece. Slit spaces between threaded branch pipe, cylindrical spring and upper headpiece as well as between bushing, cylindrical spring and lower headpiece are filled with solder or polymer glue. Device additionally has crimped shell, crimp shape of which matches shape of outer surface of cylindrical spring, and ends of crimped shell are hermetically sealed on surfaces of upper and lower headpieces in such a way that inner hollow of device was sealed.

EFFECT: higher reliability and lifetime of device.

3 cl, 3 dwg