Definition - What does Upset Tubing mean?
Upset Tubing is a long tubing joint which is installed in a wellbore to facilitate the extraction of oil and gas. It acts as a conduit, through which the produced fluids or gas get transmitted from the bottom to the surface. Tubing joint is relatively a single length pipe that can vary in length anywhere from 25 to 30 ft. This ideal length allows easy production as the tubing joint is fitted with threads on both sides and can run down through a well of any depth. Like most tubing equipment, tubing joints are designed to suit a certain well type, based on the underground conditions and fluids.
Petropedia explains Upset Tubing
American Petroleum Institute (API) developed specifications for three different connectors for use as tubing joints:
- External-upset tubing and coupling (Upset tubing)
- Non-upset tubing and couplings
- Integral-joint tubing