15b, Usolskaya Street, Perm, Russia Close 
Hollow polished rod
Hollow polished rod is used as component of dual completion, production, heating and washing equipment.
Application
- Wellhead sealing;
- Transmission of reciprocal motion from surface drive to sucker rod pump plunger;
- Extraction of produced fluid from pump to production line through inner channel;
- Hollow sucker rod and tubing string washing in order to remove paraffin and salt deposits and to improve efficiency of equipment set;
- Injection of chemical agents or steam into well through hollow sucker rod string to reduce effects of complicating factors and to enhance oil recovery;
Advantages
- Rolled connection thread for high fatigue strength;
- Thrust cones reduce bending stress at threads and ensures tight connection;
- Nitrided hardening of outer surface;
Benefits
- Coating and rolled thread ensure extended runlife;
- Separate lifting of produced fluid at dual completion and injection;
Order reference
HPR-42-4880-D
Technical specification
- Nominal size:
- 42, 44
- Diameter, inch (mm):
- 1.65 (42); 1.73 (44)
- Length, inch (mm):
- 155 (3890), 190 (4880), 315 ( 8000)
- Grade:
- C, D