Acoustic Sounding of Hydraulic Fractures in a Low-Permeability Reservoir

Theoretical models indicate the possibility of diagnosing presence and conductivity hydraulic fractures in reservoirs permeability order milli Darcy by means an acoustic TV set, which is a cylindrical probe length several meters with generator impulse signals pressure sensors. It suggested to generate signal fluid, filling gap between body outer wall borehole. supposed that generated fluid located The evolution recorded sensors as damping its amplitude appearance reflected burst allow one estimate bottomhole zone. We consider fractures, are radial or longitudinal open part less than probe, but exceeds width take into consideration due viscosity effects boundary layer near borehole walls. fracture much wavelength, this why admitted reflecting surface. provide results dispersion analysis numerical experiments on influence filtration characteristics type channel.