September 2002
Features
New foam fracturing technology unlocks lower porosity reserves
Bottom line. Using newer foam fracturing technologies, Dominion E&P has unlocked reserves – an estimated 1.5 million bbl of oil from six new wells and three re-completions – in the lower porosity (10%-to-12% range) Prue sandstone. The site is in Roberson Ranch field, southwest of Oklahoma City. Fracturing of earlier, 1970- and 1980-vintage wells – using what were then state-of-the-art, liquid-based fluids – had not been effective there. However, toward northeast of the field, where porosities were higher, in the 16%-to-18% range, the fluids had worked to some degree.
