Micropore network modelling from 2D confocal imagery

Impact on reservoir quality and hydrocarbon recovery

Journal article (2018)

Authors

T. D. Jobe Aramco Research Center
S. Geiger Heriot-Watt University
Z. Jiang Heriot-Watt University
S. Zhang Aramco Research Center
Susan M. Agar Aramco Research Center
Affiliation
External organisation
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Published Date

01-08-2018

Language

English

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Abstract

Microporosity in carbonate reservoirs is globally pervasive and commonly used to explain high-porosity, low-permeability reservoirs, higher than expected water saturations, low resistivity pay zones and poor sweep efficiency. The potential for micropores to store and produce hydrocarbons has long been recognized, yet limitations on tools to evaluate microporosity has prevented rigorous evaluation. Here we demonstrate a workflow for evaluating microporosity through a combination of laser scanning confocal microscopy (LSCM) and pore network modelling. Specific values for microporosity and permeability calculated in our study should not be applied explicitly, as these are simulated values, but they demonstrate the viability of micropore networks to store and flow hydrocarbons. Carbonate reservoir assessment is critical not only in the petroleum industry, but also for applications in hydrothermal and mineral resources, carbon capture and storage, and groundwater supply. This approach can be applied to understand the potential for any reservoir to hold and transmit fluids.