This presentation on the UKCCSRC Call 1 project, Tractable Equation of State for CO2 Mixtures, was presented at the Cranfield Biannual, 22.04.15. Grant number: UKCCSRC-C1-22.

This poster on the UKCCSRC Call 1 project, Tractable Equation of State for CO2 Mixtures, was presented at the Cambridge Biannual, 02.04.14. Grant number: UKCCSRC-C1-22.

This poster on the UKCCSRC Call 1 project, Determination of water Solubility in CO2 Mixtures, was presented at the Cambridge Biannual, 02.04.14. Grant number: UKCCSRC-C1-21.

This poster on the UKCCSRC (UK Carbon Capture and Storage Research Centre) Call 1 project, Multi-Phase Flow Modelling for Hazardous Assessment, was presented at the Cranfield Biannual, 21.04.15. Grant number: UKCCSRC-C1-07.

This project will tackle one of the key technical challenges facing the development of commercially viable CO2 transport networks: modelling the phase behaviour of impure carbon dioxide, under the conditions typically found in carbon capture from power stations, and in high-pressure (liquid phase) and low-pressure (gas phase) pipelines. Models for phase behaviour are known as equations of state (EoS). EoS vary in their mathematical form, accuracy, region of validity and computational complexity. Because different applications have different requirements, there is no single EoS that is ideal for all applications. This project will use cutting-edge computer algorithms to automatically reparameterise EoS for CCS modelling. This flexible technique will allow a user to specify their requirements and re-derive model parameters matched to their needs. Our algorithms will directly produce functional forms for EoS from experimental data, thus fully automating the derivation of EoS. This will enable users to rapidly produce bespoke EoS that are tailored to their particular application, and will enable these models to continually evolve as new measurements become available, ensuring that experimental advances are rapidly converted into improved CCS modelling and, ultimately, better performance and efficiency of real CCS processes. Grant number: UKCCSRC-C1-22.

The inherent nature of electricity necessitates a permanent balance between generation and demand in electricity systems. This has obvious implications for the operation of CCS power plants in decarbonised electricity systems with inflexible nuclear and variable renewable supply. The low variable costs of nuclear and some intermittent renewable technology allow them to run as base-load generators and shift fossil fuel plants from base-load to midmerit plants. CCS power plants can be expected to increasingly operate in ways to balance variations, sometimes simultaneously, in the production of some intermittent renewable technologies and variations in electricity demand, resulting in more frequent ramping and start/stop cycles. As a result, they may also operate over a wide output range to maintain the quality and security of electricity supply by providing ancillary services, e.g. capacity and energy reserve, to the electricity network. This work characterises the operating envelope, the performance and the corresponding compressed CO2 flow of coal power plants for a range of loads, with or without voluntary by-pass of the capture unit. Optimised part-load operating strategies provide novel insights into the additional capabilities of CCS power plants specifically designed for enhanced operating flexibility. The paper is available at http://www.sciencedirect.com/science/article/pii/S1876610214026010, DOI: doi:10.1016/j.egypro.2014.11.786.

CO2 equation of state software from UKCCSRC project: Tractable equations of state for CO2 mixtures in CCS: Algorithms for automated generation and optimisation, tailored to end-users and tutorial presentation to support equation of state software. Grant number: UKCCSRC-C1-22.

This project will develop and experimentally validate a heterogeneous flow model for predicting the transient depressurisation and outflow following the puncture of dense phase CO2 pipelines containing typical impurities. Such data is expected to serve as the source term for the quantitative consequence failure assessment of CO2 pipelines including near field and far field dispersion, fracture propagation and blowdown. Grant number: UKCCSRC-C1-07. UKCCSRC - UK Carbon Capture and Storage Research Centre.

This poster on the UKCCSRC Call 1 project, Determination of water Solubility in CO2 Mixtures, was presented at the Cranfield Biannual, 21.04.15. Grant number: UKCCSRC-C1-21.

This poster on the UKCCSRC Call 1 project 3D Mapping of Large-Scale Subsurface Flow Pathways using Nanoseismic Monitoring was presented at the CSLF Call project poster reception, London, 27.06.16. Grant number: UKCCSRC-C1-19. Injection of fluids into geological formations induces microseismic events due to pressure changes causing either opening mode or shear mode fracturing. Injection for CO2 storage is designed to be well below the pressures required for hydraulic fracturing. Due to the inherent heterogeneity of geological formations, some existing structures will be critically stressed so small microseismic events are inevitable. Current reservoir monitoring strategies either examine time-lapse variations in the rock’s elastic properties (4D seismic) over diffuse areas, or aim to detect leakage from diffuse and point sources at the seabed (e.g. the QICS project). The aim of the project is twofold: • test the potential of a new technology (nanoseismics) for passive seismic monitoring that aims to image focused flow pathways at depth of an active CO2 injection site: the Aquistore site, Canada; • use a multi-disciplinary approach to interpret passive seismic data sets obtained during operation of the same site.