From Deseret News archives:
Drilling technique damaging less land
On a cliff several hundred feet above the White River, Texas-based Anadarko is drilling 17 wells from a single location a dozen more than it has drilled from a single site in the past.
Rather than spread the wells across the landscape, they'll be concentrated in a relatively small area. The ultimate goal is to snake the drill bit thousands of feet into the earth, tapping natural-gas supplies beneath the river.
"The driving factor is being able to get under the river," said Jordan Hixson, who supervises Anadarko's production operations in northeastern Utah. "We can't get to it drilling conventional, vertical wells."
By using increasingly sophisticated and more expensive drilling methods and equipment, Anadarko and others are expanding their presence but reducing their "environmental footprint" throughout the Rockies and elsewhere. They're doing so primarily by consolidating wells to groups of 17, 22 and even larger combinations, then drilling in various directions to reach reservoirs, some previously inaccessible.
Such clusters cost more because they require the latest equipment and techniques in directional drilling. But analysts say the economics make sense because multiple-well operations allow companies to work more efficiently, decrease environmental disturbance and, in some cases, find new sources of fuel in unconventional geologic formations once too costly to tap.
Higher market prices for natural gas in recent years have helped spur activity.
"Setting aside environmental goodness and conscience, brute economics has driven companies to say it's in their best interest to concentrate their footprint and do what they can from a given location," said Richard Ranger, a senior policy adviser for the American Petroleum Institute.
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