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Underground Storage of Natural Gas l
Field Situations and Need for Simplification
Outline of the Investigation
17 other sections not shown
applied approximately axial behavior cap rock Cavity B/A Chugh Circular Cavity closed-form compressive strength confining pressure considered critical stress curves defined diameter direct-pull Duvall l967 elastic elastic-elastoplastic Elliptical Cavity Equation equivalent depth experimental field finite element analysis finite element method Fracture gas storage reservoirs geologic materials geometry geostatic gradient Hardy hoop-stress hydraulic Indiana Limestone injection tube insitu ground stresses insitu stresses internal pressure investigated large model studies loading located method microseismic activity model fabrication model tests monitoring system Obert and Duvall obtained optimum pressure Pennsylvania State University physical properties Poisson's ratio principal stresses problem Psi Psi psi/ft reser reservoir cavity reservoir models reservoir pressure Rock Mechanics Sandstone shear strength shown in Figure solution spherical cavities spheroidal stability strain gages stress concentration factors structure surface techniques tensile strength Test Series transducer triaxial tricity underground gas storage uniaxial values vertical Yes Yes Yes Young's modulus