... Abstract The simulations and numerical analyses of triaxial compression tests on soil samples recovered from the East Nankai trough have been performed by the elasto-viscoplastic constitutive equation. And the numerical analyses of the laboratory model tests on ground deformation in methane...

... sample quality lunne fabric disturbance sampler soil sample drilling operation borehole literature piston corer assessment quality sample disturbance htpc diameter reservoir characterization upstream oil & gas strength hydraulically tethered piston corer penetration...

... with greater aspect ratios were introduced. To examine the potential of the research program, a 4-in. (100-mm)-diameter model caisson with an aspect ratio of 8 was fabricated and successfully installed using suction in a laboratory-prepared soil sample. From the results of this test, the components...

... characterization strength property compression mcclelland engineer situ vane test investigation soil sample drilling equipment upstream oil & gas site investigation undrained shear strength west delta area penetration pile test program vane test strength test platform...

... of this sampling technique upon sample quality have been recognized for many years (Emrich, 1970; Schjetne and Brylawski, 1979; and Broms, 1980); however, the usually increased costs associated with acquiring higher quality samples has prolonged the use of percussion sampling. Soil samples may be disturbed...

... ABSTRACT Offshore soil samples obtained during foundation investigations frequently are expensive to obtain and are expected to become more expensive as deeper water areas are explored. Such samples should be thoroughly studied before being removed from sample liners, so that the testing...

... the information obtained from laboratory tests on soil samples. A remotely-controlled, hydraulically-operated, seafloor-based system called Stingray has been developed by McClelland Engineers which operates in conjunction with offshore drilling equipment to provide continuous cone penetrometer information...

... of the sample has virtually ceased all the applied vertical pressure is carried by the soil particles and the pore pressure is practically nil. The vertical pressure is then increased (usually doubled) and this is repeated for the range of pressures under investigation. Since the compression of the soil sample...