Selection of optimum well locations in heterogeneous turbidite reservoirs such as those found in Chicontepec basin, depends strongly on the description of heterogeneities--facies distribution and flow quality properties--as well as on the evaluation of the extent and orientation of propped fractures. Fracture growth propagation and orientation play an important role in visualizing and optimizing the drainage pattern of such complex reservoirs.

To better understand the fracturing response of these formations and support the design of development strategies, several measurements of microseismic response under hydraulic fracturing were carried out in wells in the Tajin field. By deploying sensor on-tubing tools of treatment wells, microseismic data were recorded following the injection operation, yielded fracture extent and orientation and stress anisotropy. The computed hypocentre locations are distributed in a non symmetric cloud of seismicity with a global trend extending no farther than 195m away from the wellbore in the N20-30°E direction. Moreover, the acoustic emissions presented a remarkably consistent direction.

Interpretation of location of shear-slip and acoustic emissions events is consistent with results provided by dipolar sonic image logging tools run on the same wells. Better understanding of reservoirs` response to stimulation leads the operator to review its fracturing practices for cost-effective reservoir stimulation. Numerical reservoir simulation grids for reservoirs in the zone were oriented according to the observed fracture trend.

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