1887

Abstract

Summary

Permanent geophysical crosshole methods offer opportunities to provide spatiotemporal information on CO2 migration, since the physical properties change in regions affected by fluid substitution.

The direct and quantitative integration of geophysical methods in a reservoir modeling context is not straightforward and requires multi-physical process models coupled through petrophysical parameter transformations.

Based on an example from the Ketzin CO2 storage site, Germany, we present a hydrogeophysical modeling workflow, in which simulated CO2 distributions are transfered to changes in electrical properties used for geoelectrical forward modeling.

Simultaneous inversion of the electrical time-lapse response, reservoir pressure and CO2 arrival times has not been reported before and enables estimation of the permeability distribution.

The calibrated model captures the known migration direction of the CO2 and is able to explain the multi-physical calibration dataset.

The presented framework allows to integrate various types of observations into a single hydrogeophysical model leading to increased confidence in permeability parameterization and, in perspective, to improved predictive assessments of the storage reservoir.

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/content/papers/10.3997/2214-4609.201601659
2016-05-31
2020-06-03
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