Uinta Uteland Butte, Mahogany zones yield oil

By OGJ editors

Bill Barrett Corp., Denver, is adding oil production in the Uinta basin from the Uteland Butte and shallower Mahogany members of the Eocene Green River formation in its Blacktail Ridge and Lake Canyon areas.

The company has completed four horizontal Uteland Butte wells and is testing oil from the Mahogany through a vertical well.

Peak 24-hr initial rates for the first four horizontal Uteland Butte wells have averaged in excess of 1,000 b/d of oil equivalent per day. The first two are producing as or better than expected. The third flowed and pumped an average 707 boe/d its first 30 days and had a peak 24-hr IP rate of 1,330 boe/d. The fourth, on production 21 days, has averaged 596 boe/d and had a peak IP rate of 863 boe/d.

The third well had 15 frac stages in a 3,400-ft lateral at 5,850 ft, and the fourth well had 15 stages in a 3,200-ft leg at 5,900 ft.

It is too early to figure estimate ultimate recoveries, the company said. Barrett has 55.8% working interest in the first four wells and plans to drill a total of seven horizontal Uteland Butte wells by the end of 2011.

Meanwhile, Barrett completed a vertical test well into the Mahogany formation to 5,500 ft with 245 ft of core. Core tests in the Mahogany formation were positive, and the well is recovering oil. The company is permitting two more vertical test wells it expects to drill in mid-2012.

Related Articles

ANOTHER DAKOTA OIL STRIKE HAILED IN WYOMING

02/12/1990 John McCaslin Exploration Editor Oil discoveries in the Greater Green River basin of Wyoming have been few and far between in recent years. But th...

GAS TRANSPORTATION ACTION KEEPS GAINING MOMENTUM IN U.S. WEST

02/26/1990 Gas transportation activity in the U.S. West continues to heat. Three companies have teamed up to lay a $100 million, 300 mile pipeline in Colorado...

DEVELOPMENT ECLIPSING EXPLORATION ONSHORE

06/04/1990 G. Alan Petzet Exploration Editor Federal tax credits and horizontal drilling technology are fueling a large slice of onshore development in the U....

UTAH THRUSTS GETTING DEEP LOOKS

06/04/1990 G. Alan Petzet Exploration Editor Summit County, Utah, will always be remembered as the site of the Pineview field discovery well, which opened pro...

Careers at TOTAL

Careers at TOTAL - Videos

More than 600 job openings are now online, watch videos and learn more!

 

Click Here to Watch

Other Oil & Gas Industry Jobs

Search More Job Listings >>
Stay Connected