ELECTRICAL GEOPHYSICAL METHODS AND APPARATUS FOR DETERMININGTHE IN-SITU DENSITY OF POROUS MATERIALS

摘要

The invention includes a method and device for determining the in-situ densi ty of a porous material. A resistivity-measuring device applies an electrical curren t through an electrode array to measure the resistivity of the porous material. The resistivity-measuring device may also be used to measure the resistivity of a pore tilling fluid. A formation factor and in-situ density constants of the porous material are determined using empirical methods. ln-situ moisture content of the porous material is determined. The above data is applied to a general geophysical in-situ density equation to calculate the in-sitLx density of th e porous material.