CORE SAMPLE TESTING PROTOCOL

摘要

The invention relates to the dividing up and testing of bulk samples from cores of rock. The method involves the extraction of several plugs for triaxial testing which are derived from exactly the same level in the core, and also Brazilian test samples and samples for compositional and textural analysis from the same level. Triaxial tests with different confining pressures may be performed to destruction on separate triaxial plugs, allowing a reliable full Mohr-Coulomb analysis to be performed. Mechanical properties may be related more reliably to composition and texture of rock. The technique is especially useful for non-conventional rock such as shale.

主权项

1. A method of processing a bulk sample of a cylindrical rock core, the said bulk sample being created by making two transverse cuts through the core such that the bulk sample is of cylindrical shape with the same cross section as the core, having two end faces and a curved face, the method comprising:
a) making a cut through the bulk sample, parallel to and spaced from the axis, to remove a slab from the bulk sample, thereby creating a plane face on the bulk sample extending parallel to the axis, the removed slab having a corresponding plane face; b) removing from one of said end faces of the bulk sample three or more cylindrical plugs having substantially the same dimensions; and c) performing triaxial compressive testing to failure on each of said plugs.