... Mass transport by diffusion (q D,fm,c ) and convection (q C,fm,c ) between the gas flowing in the fracture and fluids (oil and gas) in the matrix is defined in the model. Diffusion mass-transfer is modeled by a diffusion mass-transfer coefficient (k c ) between flowing gas in the fracture...

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... Abstract Recently, the flow of fluids into a fracture from a point source has been the subject of several different papers. Cleary and Fonseca 1 first suggested that convective transport should play a major role in the placement of proppant when the flow into a fracture was from a point...

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