Decarbonization

Workflow Integrates Analytical, Modeling Activities for CCS Application

The authors of this paper present a workflow designed to achieve maximum integration between analytical and modeling activities in carbon capture and storage projects.

Micro-CT apparatus (X-ray microscope) for rock samples characterization
Micro-CT apparatus (X-ray microscope) for rock samples characterization.
Source: SPE 220010.

In this work, the authors present a workflow developed to achieve maximum integration between experimental analytical and modeling activities in the operator’s carbon capture and storage (CCS) projects. The workflow allows integration of the skills developed in hydrocarbon reservoir characterization and management into the objective of capture and storage of CO2. The integrated workflow, developed with an interdisciplinary approach, permits adequate population of numerical models for the prediction of reservoir and caprock behavior during CCS.

Step 1: Sedimentology and Stratigraphy

A sedimentological study is performed on cores to obtain a sedimentological model of the reservoir and the related primary seal. This activity includes sedimentological core description, seismic-horizon interpretation at the storage-complex scale, and well-log correlation. Considering the variability of the lithologies related to the depositional environment, this step is necessary for an accurate selection of representative samples for both reservoir and caprock to be used in the workflow.

Step 2: Initial Characterization of the Storage Complex in Terms of Rock and Fluids

Plug Characterization. Plugs sampled from the reservoir and caprock are characterized from mineralogical, petrographic, petrophysical, and geomechanical points of view.

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