摘要
an id="EnChDivSummary" name="EnDivSummary">To detect the tilt fracture of carbonate reservoirs in Tahe Oilfield,fracture prediction technique based on P-wave residual timedifference of TTI model with tilt axis symmetry is developed and validated.The basic theory of TTI media and NMO residual timedifference are reviewed and the phase velocity of P-wave in 3DTTI media is computed.A fracture prediction technique for P-wave residual time-difference applied for prestack seismic gathers is developed,of which the technical procedures and steps are shown in details.A three-layer numerical model containing one TTI fracture interlayer is designed,with which synthetically seismic azimuth gathers are simulated with finite difference method.The fracture development intensity and fracture angles are inversed by extracted NMO residual time-difference,which are almost the same with the model design parameters.It validates the fracture prediction technology using P-wave residual time-difference based on TTI model.an>
