... successfully limits chances of leakage of the products from the caverns. Similar to other projects of the same nature, a water curtain sys- tem has been designed for the Visakhapatnam project of SALPG. The purpose of mechanical tightness criterion is long-term stability of the caverns as well as mainte...

... at the site. Instead, we demonstrate borehole wall failure by shear. By employing the Coulomb criterion, a probable stress distribution with depth is derived. 1 INTRODUCTION The hydraulic fracturing methodology has had a vast application worldwide since it was first introduced in the 1960-ies (e.g...

... breakout span as it varies with depth is obtained. Laboratory tests of core samples in a polyaxial cell render the true triaxial strength criterion of the rock. Using the condition of limit equilibrium between the local state of stress at the edges of breakout-borehole wall intersections and the strength...

... is required. In this latter case a multitude of ambiguities arise to the point that analysis of breakdown pressure for in situ stress estimation is often considered unreliable. wellbore integrity hydraulic fracturing compressibility Reservoir Characterization Wellbore Design criterion Detournay...