Characterization of Core-Scale Heterogeneities Using Laboratory Pressure Transients

Abstract

We constructed a novel, state-of-the-art laboratory setup that captures several hundred pressure readings per second to study the response of cores to pressure disturbances. We used our new experimental setup to measure accurately and rapidly permeability of homogeneous cores, matrix and fractured properties of a fractured rock, and the individual segment properties of a butted core sample.

A Technique for Faster Pulse-Decay Permeability Measurements in Tight Rocks

“…This technique also has the advantage that the fastest, upper-end portion of the pulse decay is not "used up" during establishment of the single exponential decay. 7. The smaller reservoir volumes should be 2 to 10 times larger than the PV of the sample.…”

Experimental investigation on the characteristics of gas diffusion in shale gas reservoir using porosity and permeability of nanopore scale

“…It cannot be the representative of nanopores in shale matrix due to the microfracture in core samples. Thus, the permeability obtained from the PPD method is not valid for the characterization of gas diffusion in nanopores of shale matrix (Kamath et al, 1992;Luffel et al, 1993).…”

Modeling fluid flow in heterogeneous and anisotropic porous media

“…It is interesting to compare the anisotropic solution and the solution for the anisotropic permeability distribution. In addition, since some laboratory measurements are the response of the porous media to preesure transients to characterize rock heterogeneities (Kamath et al, 1990), the finite difference code for the diffusion equation (Eq. 3) can be developed to study the effects of heterogeneities and arusotropy on the time-dependent flow properties.…”