METHOD AND DEVICE FOR EVALUATING PHYSICAL PARAMETERS OF AN UNDERGROUND DEPOSIT FROM ROCK CUTTINGS SAMPLED THEREIN

摘要

method and device for evaluating, at the same time and with the sameequipment, physical parameters such asthe absolute permeability and the porosity of bullet fragments du00e3un environmentnatural or artificial fractured porous. it is a measure of theporosity of the fragments by using a pressure testing of lu00e3hu00e9liumprotocol known per se. lu00e3enceinte (1) which containsis in communication with a reservoir (11) of known volume,with lu00e3hu00e9lium under a known pressure.a lu00e3u00e9quilibre pressure, we can deduce the value of the solid volume. wemeasure the volume of rock, and envelopethe mass fragments. the combination of these measures are used to determine the porosity ofthe samples and the density of the rock. wemeasured permeability by submerging them in a viscous fluid.with lu00e3enceinte in communication with fluid.viscous pressure defined in a container (9) in such a way as tocompress the gas trapped in the pores of the rock.according to two different protocols. through the model of federallu00e3u00e9volution pressure or volume in lu00e3enceinte.du00e3un iterative adjustment, we determined the values of the physical parameters.for example, applications to petrophysical measurementsfrom drill cuttings or crushed cores.