CCS and Power Systems
Carbon Storage - Geologic Storage Technologies and Simulation and Risk Assessment
Consolidated Sequestration Research Project
Performer: LBNL - Lawrence Berkeley National Laboratory
Project No: FWP-ESD09-056
LBNL is working on a series of individual tasks with the common goal of advancing the science of geological storage through state-of-the-art research. Tasks address DOE program goals to accelerate deployment of and reduce barriers to commercialscale geologic carbon storage. Researching large-scale CO2 geological storage will further improve our understanding of the potential impacts of CO2 storage on groundwater resources. In addition, the research team is assessing storage capacity and regulation by developing pressure management schemes for storage capacity enhancement and CO2 leakage remediation, should it be necessary. Project tasks include identifying ways to improve predictions of injectivity and capacity of saline formations and depleted gas reservoirs; testing and implementing innovative, high-resolution methods for monitoring CO2 in the subsurface; researching elements of risk assessment; developing modeling and simulation techniques; measuring large scale impacts of geological storage; and collaboraitve projects to obtain information gained through global partnerships. A detailed description of each substantive task is listed below.
- Task 1 Project Management: The program management task provides a budget for performing CSRP reporting, publication support, and programmatic travel. This task includes management and coordination for each of the four work tasks.
- Task 2 GEO-SEQ: The goal of GEO-SEQ Project is to increase understanding of carbon dioxide storage processes and mechanisms by accomplishing two primary objectives: (1) develop ways to improve predictions of injectivity and capacity of saline formations and depleted gas reservoirs, and (2) develop and test innovative, high-resolution methods for monitoring CO2 in the subsurface. GEO-SEQ leverages scientific understanding and technology development through highly visible, ongoing, world-class carbon storage projects including the Otway Project in Australia, the In Salah Industrial-Scale CO2 Storage Project in Algeria, the Ketzin storage project in Germany (Figure 1), and the Aquistore project in Canada. Specifically, GEO-SEQ is improving current monitoring methods by investigating fundamental geochemical and petrophysical processes that underpin CCS projects using demonstration-scale pilots as testing facilities to scale up from laboratory to field scale.
- Task 3 Fundamental Studies: This project focuses on developing new and improved methods to track CO2 in the subsurface and detect possible leaks. It is using demonstration-scale pilot projects as testing facilities, allowing laboratory-scale projects to be tested and validated at larger field-scale levels under more realistic conditions. The overall effort is developing rock-physics models for improved quantitative interpretation of seismic measurements and conducting distributed thermal-perturbation sensor measurements in observation boreholes (Figure 2) to validate use of the method for detection of CO2 in the near wellbore region.
- Task 4 Simulation Studies: This task focuses on the comparison and evaluation of modeling and simulation activities that are relevant to carbon storage reservoirs. It supports simulation studies of large-scale hydrological impacts for CO2 storage and builds upon previous work by focusing on optimization schemes for storage management. It is working to improve current modeling methods by evaluating model uncertainties, assessing their impacts, and validating the models using field data. The effort will make lessons learned and improvements made by one research team available to other research teams, thereby contributing to better storage technologies.