While hydraulic fracturing is primarily used to recover oil and gas from reservoirs, water-free fracturing may soon become the center stage to extract hydrocarbons in certain formations or situations. DryFrac™ waterless fracturing technology, as the name implies, does not use water to create the fracture. Instead, this process uses liquid CO2 to crack open the formation providing a highly conductive path for hydrocarbons to flow into the well. This technology can provide superior technical advantages over water-based hydraulic fracturing by eliminating the need for water, resulting in formations free from water damage and maintaining the intended proppant pack conductivity with no polymer residue. This paper presents in-depth information on a case history where liquid CO2 is used to fracture a formation. The presented data includes background, modeling, liquid CO2 implementation as a fracturing fluid, results and analyses.

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