Aspects of hydraulic fracture propagation in Tatarstan fields
This paper reviews publications on microseismic monitoring of hydraulic fracturing operations performed in Tatarstan fields. Results of foreign and domestic research in other regions have been compared. The following conclusions have been made: 1. Horizontal stress field at a depth of 1400-1700 m is almost isotropic. 2. Under such conditions, the induced fractures tend to propagate along the direction of natural fractures, thus generating a fractured zone. 3. Expansion of the fractured zone continues after the injection stops. 4. It is necessary to perform microseismic monitoring for proving complex stratification and critical stress parameters.