Institute of Computational Mathematics and Mathematical Geophysics SB RAS

International Conference on Mathematical Methods in Geophysics «MMG-2008»

Akademgorodok, Novosibirsk, Russia, October 13-15, 2008

Abstracts

Mathematical Simulation in Geophysical Problems. Seismic Methods, Problems of Geomonitoring and Geodynamics

Modeling of deformation process of system "borehole - hydraulic fracturing cracks" in problem of stress estimation in rock massif

Serdyukov S.V., Martynyuk P.A., Pavlov V.A.

Institute of mining SB RAS (Novosibirsk)

The traditional way of stress definition in a rocks massif with the help of hydrofracturing assumes measurement of shut-in pressure of formed cracks. In high-permeability rocks of oil-and-gas formations fixation and interpretation of this parameter cause difficulties down to impossibility of its finding because of high outflow of a liquid. For the decision of this problem it is offered to carry out works in two stages. First with the help of hydrofracturing we create system of extended radial cracks. Then we load a contour of a borehole with the help of the device interfering a filtration of a working liquid in rocks. For the decision of questions of applicability of the specified approach to an estimation of an intense condition of rocks modelling researches which results are resulted in given article are executed. Testing of a technique of the account and interpretation of the settlement data are given in the simplified statement when the system will consist of two opposite directed rectilinear cracks which lengths are much greater radius of a chink and they are focused on the maximal compression.

Note. Abstracts are published in author's edition

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