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Original scientific article

PORE PRESSURE AND FRACTURING PRESSURE INFLUENCE AT BOREHOLES CONSTRUCTION ON THE ROCK SALT DEPOSIT ''TETIMA'' TUZLA

By
Sanel Nuhanović ,
Sanel Nuhanović
Contact Sanel Nuhanović

Faculty of Mining, Geology and Civil Engineering, University of Tuzla, Tuzla, Bosnia and Herzegovina

Adnan Hodžić ,
Adnan Hodžić

Faculty of Mining, Geology and Civil Engineering, University of Tuzla, Tuzla, Bosnia and Herzegovina

Almir Šabović
Almir Šabović

Mining Institute, Tuzla, Bosnia and Herzegovina

Abstract

In the rock salt deposit "Tetima" by analysis of situation and pore (layers) pressures and fracturing pressures development it has been proved that the values of pore and fracturing pressures are quite low (in the part of deposit which is currently exploited) and on the border of use salt water such as fluid for canal rinse in some drilling intervals. That especially relates to the'' weak'' breccia layer, stationed just above rock salt series, which is rated as most likely zone of drilling fluid loss and hermeticity loss of all constructed boreholes in that part of deposit. Calculated values of pore pressures, fracturing pressures and their gradients indicate on need for correction of existing boreholes construction on the rock salt deposit ''Tetima''. Analysis results of six constructed boreholes are presented in this paper, by analytical and graphical method.

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 

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