Description
When fracturing many tight gas formations, conventional, water-based fracturing fluids can cause water to become trapped in the near-wellbore region, significantly impeding gas flow. In the past few years, a number of unconventional fracturing fluids have been developed to more effectively stimulate these water-wet, undersaturated formations. New fluid options include viscoelastic surfactant gels, energized and foamed fluids, and fluids incorporating alcohol, hydrocarbon and liquid carbon dioxide. This presentation will describe the chemistry and physics of these fluids and their application in stimulating tight gas reservoirs.
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