Opal Gas Processing Plant


The Opal gas processing facility in Lincoln County, Wyoming, processes natural gas gathered from wells in the area in preparation for interstate natural gas pipeline transport. It also produces natural gas liquids (NGLs) from the natural gas.

The Opal plant initially began operations in 1958, and in recent decades has undergone significant expansions to serve growing natural gas production in Wyoming. The first of five turbo-expander trains was built in 1983 with the most recent going into service in 2007. The plant currently has approximately 40 employees.

The facility consists of five cryogenic processing trains, which purify the natural gas and then separate the NGLs.

Gathering Area

OpalMap-01The Opal plant receives natural gas from gathering pipelines serving the southwest Wyoming areas including Greater Green River Basin, Big Piney, Jonah/Pinedale and Moxa/Green River.


The Opal plant has an inlet capacity of 1.1 Bcf/d of natural gas per day. Recent daily volumes have been approximately 1 billion cubic feet of natural gas.

Pipeline Connections

The Opal plant provides pipeline-quality gas to interstate natural gas pipelines including:

  •  Ruby
  •  Kern River
  •  Northwest Pipeline
  •  REX via Questar’s Overthrust Pipeline
  •  Colorado Interstate Gas

Natural Gas Liquids

The plant also provides NGLs to the Overland Pass Pipeline for transport to the Mid-Continent NGL market center in Conway, Kan. and to MAPL (Mid-America Pipeline). NGLs include ethane, propane, butane, and natural gasoline. NGLs are used for home heating, indoor and outdoor cooking, motor fuels, and as industrial energy to help manufacture plastics.