The blender, a closed system-pressurized vessel, is pnuematically loaded with proppant. Liquid CO2 is subsequently introduced into the tank, at temperature and pressure contraints of 0 degrees F, and 300 psi respectively. The speed of twin augers that run through the bottom of the blender vessel controls the density of the slurry. Choosing the Right Reservoir Successful results and applications of the Dry Frac technology depend on the selection of the proper reservoirs and wells. These candidates typically have good permeabilties, and don't require long fracture extentions.
Reasonable rock stresses.
Generally, high fracture gradients make sand placement an arduous endeavor. Thus, the likelihood for effective sand placement with the Dry Frac is difficultl. Poor fracture containment. A realistic evaluation of the well can be made within 48 hours to 60 hours following the stimulation treatment. Coals, in particular those coals that are susceptible to gel damage.