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Ashley Field

BY:Stacy Sutliff

Recent Activity

  • There are now 17 producing wells

  • Presently looking into injecting CO2 into the Weber reservoir, to increase permeability

Production Record

Stratigraphic Column

St

  • In 1948, the Ashley Field started producing 300bbls of oil per day.

  • There are now 17 producing wells producing 5000bbls of oil monthly and over 23,000,000bbls of water.

  • Production as of January 1, 2005, was 20,575,112bbls of oil and 1,315,409,604bbl of water
  • The Uinta Basin formed during the Paleocene or Eocene time, due to subsidance in the central region and uplift around the boundaries

  • Wells begin in the lower part of the Mancos Shale

  • Cretaceous- brackish, marine, and terrestrial waters

  • Jurassic-Alternated between marine and nonmarine environments

  • Triassic- Marine transgression in conjunction with volcanism south west of the Uinta basin.

  • Permian-characterized by the Weber Sandstone and the Park City formations. These are the Primary producing horizons.The Weber is of Aeolian deposition

Structure

  • Located on a northwest-southeast plunging antincline on another Blue Mountain anticline

  • Field closure is about 300ft

  • Several basement type faults that do not reach the surface

Introduction

  • 1900, the first well in the Uinta basin was drilled.

  • 1925 the Ashley Field was found producing gas in commercial amounts

  • 1948, deeper drilling in the Ashley field by the Equity Oil Company resulted in the finding of oil

  • located 5 mi SE of Vernal, along the south flank of the Uinta Mountains, in the Uinta basin

  • Cumulative production over 20 million barrels of oil

  • Principle reservior Pennsylvanian Weber Sandstone
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