Rock Property Characterization Services

Rock Property Characterization & Pore System AnalysisRock Property Characterization

Macroscopic description of whole core for facies analysis

Detailed description of whole core produces a vertical sequence of facies that can be placed into a depositional setting. This data is useful in reservoir modeling and exploitation applications providing information on flow units and identification of sequence boundaries and flooding surfaces.

Submicroscopic description for understanding the effects of mineral diagenesis

Reflected, transmitted, and fluorescent-light microscopy
Thin sections, impregnated with blue epoxy to highlight pore space, provide information on texture (grain size, sorting) grain composition, intergranular phases and pore types. Modal analysis data (point count) quantifies each of the rock and pore space components as a percentage of the rock volume.

Reflected light photomicrograph
Fluorescent light microscopy uses an auto-fluorescing epoxy to help identify pore space not large enough to be visible during standard thin section evaluation. This "microporosity" can be present in altered grins, intergranular clay and very small remnants of intergranular pores.

Reflected light photomicrograph taken at 20x showing drill cuttings from a high permeability, arkosic gas sand. Photomicrographs like this can be used to compare rock from other zones or wells.

Scanning Electron Microscopy
The high magnifications available through SEM show diagenetic clay morphology and how the clay development has impacted the pore structure. Diagenetic clay is responsible for a majority of formation damage and a significant amount of unconventional pay opportunities.

High pressure (60,000 psia) mercury injection capillary pressure testing

High pressure mercury injection capillary pressure testing using Micromeritics equipment. Data includes capillary properties at over 100 pressure points as well as porosity and calculated air permeability.

Bulk Volume vs. Capillary Pressure

Pore Volume vs. Capillary Pressure

Pore Aperture Size Distribution


Conversion to Hydrocarbon Water Systems

Height Above Free Water

Seal Capacity


Contact Ellington and Associates, Inc. today for more information about rock property characterization services 713-956-2838.

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