«Oilfield engineering»

Determination of rock geomechanical parameters of the Timan-Pechora oil- and gas-bearing province in order to increase the reliability of hydraulic fracturing modeling

UDC: 622.276.66
DOI: 10.33285/0207-2351-2023-12(660)-32-37

Authors:

¹ LUKOIL-Engineering Limited PermNIPIneft Branch Office in Perm, Perm, Russia

Keywords: hydraulic fracturing of a formation, hydraulic fracturing design, 1D geomechanical model, Timan-Pechora oil- and gas-bearing province, vertical stress, minimum horizontal stress, Poisson’s ratio, elastic Biot parameter, tectonic stress

Annotation:

Hydraulic fracturing of a formation is an effective method of intensifying oil production. The efficiency of hydraulic fracturing depends on the realization of the technology’s potential in definite geological-physical conditions. Hydraulic fracturing planning is performed on the basis of 1D specialized geomechanical models. In the absence of the required data for calculation, uncertainties arise when designing a design of hydraulic fracturing type, non-confirmation of geomechanical models when implementing hydraulic fracturing leads to deviations of the actual geometric dimensions of fractures from the planned ones. In the absence of the data required, the author of the article proposed calculation methods and built dependences of key parameters for the Timan-Pechora oil and gas province (TPOGP): vertical mountain pressure, Biot coefficient, tectonic stress. The obtained dependences of rocks geomechanical parameters were tested on one of the TPOGP wells. According to the results of a retrospective analysis of hydraulic fracturing, wave acoustic cross-dipole logging performed before and after hydraulic fracturing as well as determining the inflow profile after hydraulic fracturing, high convergence of design and actual parameters of hydraulic fracturing was noted, the reliability of the built geomechanical model was confirmed.

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