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Shallow Depth Seismicity and Stress State of Sakhalin Earth Crust Relation Based on Deep Borehole Logging Data
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Tyumen 2017, Mar 2017, Volume 2017, p.1 - 5
Abstract
Summary
The paper covers calculations and estimation of stress state of terrigenous sedimental rocks oil & gas fields of Sakhalin, and its relations with local shallow depth seismicity. The values of maximal horizontal and vertical stress have been calculated for different depths. The maximal sublateral stress could exceed the vertical stress by 2–3 times in average. Observation of shallow depth seismicity near Polyarninskoe and Aniva fields showed, that horizontal stress state of Sakhalin sedimental rocks is characterized by horizontal stresses near to Mohr-Coulomb failure criterion.
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