Questar Pipeline: Serving The Rockies Since 1928

Questar Pipeline Co., founded in 1928, is one of the oldest pipelines serving the Rockies. The system has a capacity of 1.6 billion cubic feet per day (Bcf/d) and runs 1,722 miles with access to six major producing areas in Utah, Wyoming and Colorado, including the Greater Green River, Uinta and Piceance basins.

Owned by Questar Corp., the pipeline connects with other systems, including the Overthrust and Rockies Express pipelines, that provide it with access to markets in the West and Midwest.

Questar Pipeline has a seasonal storage capacity of 145 billion cubic feet (Bcf), including capacity at the Clay Basin facility that Questar owns and operates. This facility is the largest underground storage reservoir in the Rockies.

According to Hart Energy Mapping & Data Services, the system’s largest transport customer is Questar Gas Co. at 901,000 dekatherms per day (Dth/d). This was followed by Pacificorp at a combined 270,000 Dth/d; EOG Resources with a combined 173,000 Dth/d; XTO Energy at a combined 134,000 Dth/d; Anadarko Energy Services Co. at 106,000 Dth/d; Chevron USA at 47,000 Dth/d; and Bill Barrett Corp. at 37,000 Dth/d.

The top storage customer on the system is also Questar Gas Co. at 13.42 Bcf. This is followed by Puget Sound Energy at 12.88 Bcf; Intermountain Gas Co. at 8.41 Bcf; Williams Gas Marketing at 6.43 Bcf; and Anadarko Energy Services at 2.40 Bcf.

The system’s peak for transport throughput in the years from 2006-2009 was 2008 at 1.2 million Dth/d with its peak storage quantity hitting 125 Bcf in 2006, according to Hart Energy Mapping & Data Services.

Questar Pipeline’s top receipt point in 2010 was Red Wash – Fidlar and its top delivery point in 2010 was Kern River – Goshen.