Carbon Storage Site Characterization: Appraise Capacity, Ensure Containment

PGS recognizes the urgency and the call for action against climate change to achieve ambitious net carbon dioxide (CO2) emissions goals. Carbon storage is essential to combat climate change and understanding the subsurface is key. PGS' integrated expertise and assets can accelerate the energy transition and help plan, develop and operate carbon storage sites efficiently and safely.

The Need for Carbon Capture Storage (CCS)

The world must both reduce its CO2-generating activities and permanently store more of it. At present there are less than 30 sites worldwide with a combined storing capacity of around 40 Mt of CO2 /year (GCCSI, 2020; Ringrose and Meckel, 2019), and the expectation is to have close to 300 Mt storage capacity per year by 2050 (European Commission, 2018). There is an immediate need to identify viable and sufficiently largescale CCS storage sites fast.

Define and Appraise CO2 Sites with GeoStreamer and rockAVO

Carbon Capture PGS Workflow


PGS’ global MultiClient library,(one of the largest seismic data libraries in the world) is the foundation for the development and implementation of an integrated geological and geophysical (G&G) workflow for risk assessment of carbon storage site capacity and containment. A Proof-of-Concept (PoC) area has been chosen in the North Sea within an extensive cross border (UK and Norway) regional GeoStreamer dataset. The broadband seismic data allows significant and efficient site assessment by providing accurate and detailed descriptions and understanding of the subsurface, with more reliable attributes for key storage capacity parameters such as net-to-gross, porosity and thickness.

These parameters are firstly derived from well measurements through petrophysical and rock physics evaluation. Rock physics understanding is accessed through the PGS interactive rock physics product, rockAVO. This regional product offers a consistent, homogenous processed well-log database.

PGS has two webinars available on Carbon Storage. 

Understanding The Subsurface for Capacity and Containment Characterization

The workflow to assess capacity and containment includes a complete G&G study, comprising of seismic data conditioning, seismic interpretation, depth calibration, well-to-seismic ties, seismic inversion as well as rock physics and reservoir properties estimation.

This workflow is a data-driven approach that, from 3D analysis estimates the risk and uncertainties of key features relevant to CCS including lithology, integrity, size, geometry, and sand connectivity. This is crucial for the C02 containment assessment and storage capacity calculations.

Revealing Storage Site Potential Efficiently with (semi) Automatic Tools

The storage site assessment integrates the outcomes of the capacity and containment analysis and the risk evaluation, and it has been designed to be automated. Having an automatic solution enables the deployment of the workflow over large areas, resulting in the efficient screening of different volumes, the comparison of various sites and more confident site selection.

Integrated and Flexible Workflow for Carbon Site Characterization

Characterizing the capacity and containment of a carbon storage site is only a part of a larger CCS value chain. It is therefore important to place this workflow into a recognizable front-end project context: Identify, Assess and Select. Throughout these stages the objective will be to identify and screen many potential sites and through technical analysis to define the most suitable to meet the CO2 storage needs of the project. The ultimate objective of the “assess” and “select” processes, is to reduce the risks associated with site characterization and achieve sufficient confidence that the project can move into the detailed engineering and design phase. The integrated G&G workflow provides numerous benefits

  • Automatic processes for time-efficiency delivery
  • Integrated G&G technology and expertise
  • Scalable workflow (regional to local evaluation)
  • Possibility to tailor to project objectives.

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Contact us with any questions You can also see this content presented and discussed by our subsurface experts in two recent recorded events