Non-Upset Tubing - NUE/NUT Thread Plug and Ring Gages

To use NUE/NUT tubing, the following steps are recommended:

  • Select the appropriate size, grade, and weight of NUE/NUT tubing according to the well conditions and the production requirements. The API Spec 5B provides a table of tubing sizes, ranging from 1.050 to 4.5 inches in diameter, and the corresponding threads per inch (TPI), ranging from 8 to 10.
  • Inspect the tubing and the coupling threads for any damage, corrosion, or defects. Use a thread plug and ring gage to check the thread dimensions and tolerances. The gage should conform to the API Spec 5B and be certified by a qualified laboratory.
  • Apply a suitable thread compound to the pin and box threads of the tubing and the coupling. The thread compound should be compatible with the tubing material and the well fluids, and provide adequate lubrication and corrosion protection.
  • Align the tubing and the coupling, and make up the joint by hand until the pin shoulder contacts the box face. Use a torque wrench or a power tong to apply the recommended torque to the joint. The torque value should be based on the tubing size, grade, and thread compound. Do not over torque or under torque the joint as this may cause leakage or failure.
  • Lower the tubing into the wellbore, and connect it to the surface equipment and the downhole tools. Perform a pressure test to verify the integrity of the tubing and the joints. Monitor the tubing performance and condition during the well operation, and replace any damaged or worn-out tubing as needed.
WPNUE/NUT-1.050-P 1.050" NUE/NUT Plug Gage call
WPNUE/NUT-1.050-R 1.050" NUE/NUT Ring Gage call
WPNUE/NUT-1.315-P 1.315" NUE/NUT Plug Gage call
WPNUE/NUT-1.315-R 1.315" NUE/NUT Ring Gage call
WPNUE/NUT-1.660-P 1.660" NUE/NUT Plug Gage call
WPNUE/NUT-1.660-R 1.660" NUE/NUT Ring Gage call
WPNUE/NUT-1.900-P 1.900" NUE/NUT Plug Gage call
WPNUE/NUT-1.900-R 1.900" NUE/NUT Ring Gage call
WPNUE/NUT-2-3/8-P 2-3/8" NUE/NUT Plug Gage call
WPNUE/NUT-2-3/8-R 2-3/8" NUE/NUT Ring Gage call
WPNUE/NUT-2-7/8-P 2-7/8" NUE/NUT Plug Gage call
WPNUE/NUT-2-7/8-R 2-7/8" NUE/NUT Ring Gage call
WPNUE/NUT-3-1/2-P 3-1/2" NUE/NUT Plug Gage call
WPNUE/NUT-3-1/2-R 3-1/2" NUE/NUT Ring Gage call
WPNUE/NUT-4-P 4" NUE/NUT Plug Gage call
WPNUE/NUT-4-R 4" NUE/NUT Ring Gage call
WPNUE/NUT-4-1/2-P 4-1/2" NUE/NUT Plug Gage call
WPNUE/NUT-4-1/2-R 4-1/2" NUE/NUT Ring Gage call

Non-Upset Tubing (NUE/NUT) is a type of tubing used in oil and gas wells that has no increase in diameter at the end of the pipe body. It is threaded and coupled with a special joint design that provides a metal-to-metal seal and a strong mechanical connection. The API Spec 5B standard from the American Petroleum Institute (API) defines the specifications for NUE/NUT tubing.

NUE/NUT tubing is a simple and reliable tubing option that can be used in various well applications. By following the API Spec 5B and the best practices for tubing installation and maintenance, NUE/NUT tubing can provide a long-lasting and effective service in the oil and gas industry.

If you have any technical questions; our team of engineers has served on many different API gaging subcommittees with over 100 years of experience. We are here to assist you with any questions or special requirements you may have.

You can contact us at: 888-400-4243 with any questions or quoting you require or email your prints to quote@westportcorp.com.