... modulus stiffness compaction curve sandstone synthetic gronstone correction compaction reservoir compaction reservoir characterization upstream oil & gas uniaxial compaction compaction behavior core damage effect synthetic rock virgin compaction core compaction drilling operation...

... Abstract This paper describes, for the first time, a unique investigation of ASR using synthetic sandstone samples formed under applied polyaxial stresses. The strain relaxation in all tests invariably gave a good indication of the principal stress orientations. Measured strain relaxation...

... and repeatable. The paper finally discusses the influence of the wear flat and the depth of cut on the results and also the limitations of the method. P. 15 friction line measure strength sandstone strength compressive strength structural geology experiment detoumay resolution reservoir...

... P.M.T.M. Schutjens, SPE (1, T.L. Blanton, SPE (2, J.W. Martin (3, B.C. Lehr (1 and M.N. Baaijens (4 Abstract Laboratory experiments were done to investigate compaction of core taken from a 5 km deep, highly overpressured sandstone reservoir as a function of depletion, stress path, and time...

...," and this progression is assumed to be related to increasing strain imparted to a rock layer. A complication observed in sandstone outcrops from Oil Mountain, a Laramide anticlinal structure in Wyoming, is that fracture sets can reach saturation at different levels of strain even in the same bed. Assuming that average...

... Abstract We report an experimental study on the poromechanical behaviour of a sandstone rich in clay minerals. With the use of Biot's theory of poro-elasticity, results obtained from mechanical experiments performed in a triaxial cell at temperatures up to 200 C are compared with results...

... in a mounting material (Demotec 30), in order to stabilize the sample during testing, and simplify surface preparation. The upper and lower surfaces of the samples were made flat and plane parallel by grinding. 15 materials were tested, including sandstones, limestones and shale/clay materials with different...

... and applied a moment tensor inversion procedure to located AE. This allows a direct analysis of the mechanics driving the cracking. We present and compare results from two tests (triaxial loading and triaxial unloading) using Springwell sandstone to show the capabilities of the laboratory and processing...

... at high effective pressure. We compare the shale results with those from measurements on a sandstone and a tuff, where permeability anisotropy is maintained even up to the highest effective pressures used. P. 307 permeability anisotropy sandstone shale experimental study effective pressure...

.... The key results of this study, based on measurements on a variety of sandstones, are: Sandstone formations are characterized by a single normalized failure envelope. This universal curve makes it possible to construct the failure envelope for a sandstone formation from the knowledge of critical...

... feld applications. P. 87 disposal sandstone slurry reservoir characterization dusseault chloride injeetion evolution saskatchewan sfi operation sfi strata drillstem/well testing permeability drillstem testing slop waste management fracture injection hydraulic fracturing...

... Abstract Volumetric strains during triaxial tests of 44 sandstone materials were analysed in order to understand the physics of dilation. The samples originate from different North-Sea fields, and the porosities vary from 1 to 39 percent. Different confining stresses were applied to the same...

... in sands and shales based on core testing and finite element analysis placed tighter constraints on the relative principal stress magnitudes and the magnitude of the maximum horizontal stress. P. 179 cohesion mpa papanastasiou sandstone computation constraint situ stress stress magnitude...

... mechanism. This parameter is analytically approached using the formalism of the yield design. Cutting tests carried out in Vosges sandstone at atmospheric pressure showed the existence of additional forces acting on the cutter and not predicted by the model. These forces, related to the rock microstructure...

... Abstract Sanding experiments were carried out on weak sandstones with uniaxial compressive strengths in the range of 2 MPa to 25 MPa. The sandstones were either reservoir rocks or those with appropriate physical and mechanical properties to be good model materials. The experiments involved...

... Abstract Hydrostatic and triaxial compression experiments have been conducted to investigate the evolution of fluid permeability and fluid storage capacity in Tennessee sandstone, a low- porosity tight' reservoir sandstone. A newly developed single-ended transient pulse permeability...

... Abstract This paper is based on laboratory investigations of synthetic sandstone cemented under stress making it possible to perform mechanical tests directly from the simulated in situ stress state. We have mapped the acoustic emission damage surface, or Holcomb surface as we have called...

... Abstract Compression and extension tests with measurement of permeability and elastic wave velocity were made on two different sandstones. Distinctly different cracking and compaction behavior were observed in the two types of test. Conclusions are drawn for the choice of wellbore orientation...

... mpa sandstone wellbore log analysis elastoplastic interface reservoir characterization drawdown horizontal stress porosity reservoir geomechanics well 22 well logging thompson upstream oil & gas stress state critical drawdown core sample elastic-perfectly plastic model bradford...

... to the permeability and electrical conductivity of the medium. (ii) Secondly the piezoelectric effect in which electric dipoles are created due to the application of stress on specific crystals e.g. quartz. Here we present laboratory measurements of electrical potential and acotsstic emission from sandstone (75...