Lost Cabin Gas Plant

Lost Cabin, Wyoming

Kiewit subsidiary, TIC, was the general contractor for the addition of train 2 and train 3 of Lost Cabin Gas Plant. TIC self-performed all major disciplines as well as miscellaneous structural steel items, and the management of caisson drilling, insulation, chemical cleaning and flushing, heavy lift and coating subcontracts. These two sequential projects expanded the processing capacity of the existing Lost Cabin sour gas sweetening plant to 313 million standard cubic feet per day with the construction of one 62-million-standard-cubic-feet-per-day train and one 180-million-standard-cubic-feet-per-day train. The facility removed carbon dioxide (CO2) and hydrogen sulfide (H2S) from locally produced gas for distribution to customers throughout the West and Midwest.

TIC also participated in Denbury’s project, which combines the proven techniques of enhanced oil recovery (EOR) with the characterization and monitoring needed for effective production of additional oil. The CO2 EOR project at Bell Creek requires a consistent supply of about 1 million tons of CO2 each year for several years. The CO2 is provided from the Lost Cabin natural gas processing facility. Natural gas must be in a pure form for transport and use; therefore, the plant removes about 50 million cubic feet of CO2 from the raw natural gas produced each day. In the past, the Lost Cabin plant would release the CO2 into the atmosphere but now the CO2 is held for use at the Bell Creek Field. As part of a Denbury project to separate CO2 from the gas stream to be compressed and used in enhanced oil recovery, TIC set a new 30,000-pound intermediate flash drum in train 3 of the Lost Cabin Gas Plant, as well as 40 tons of steel and 4,500 feet of pipe associated with the vessel and tying into the existing plant.