This paper presents the overview of the feasibility studies on the possible optimization of energy footprint for the development of high CO2 fields. The development cycle will involve the production of well stream with high CO2, separating the gases and transporting the CO2 via a pipeline to a suitable sequestration site. The entire CCS cycle will require substantial usage of energy. The separation is the biggest sector for energy utilization, the source of which is usually came from the associated gas and the recycled fuel gas for the oil and gas field, respectively. To ensure the economics of developing a high CO2 field, the utilized energy to separate, transport and sequester CO2 needs to be optimized. Energy optimization can be achieved through a series of strategy such as the integration of low BTU gas turbine driver, liquid or supercritical centrifugal CO2 pump or the use of the industry proven CO2 compressors. Over or under specifications of turbo-machinery equipment could hinder the energy foot print optimization. The out-of-specs equipment selection can be from the result of erroneous estimation of pipeline pressure drop due to an inadequate simulation tool capability when predicting the fluids transport behavior. This paper identifies the technology gaps in a commercial pipeline simulation package in an attempt to reduce this uncertainty. In addition, a comparative energy footprint based on simulation and vendor specification through the implementation of various equipment schemes and compression strategy from various CO2 separation technologies are reviewed and discussed. The paper also discusses the qualification requirements for some of the turbo-machinery equipment proposed, highlighting the technology risks and gaps should a particular technology is selected and deployed to achieve the desired energy footprint during field operation.
Optimising Energy Footprint for Offshore CO2 Separation and Transportation (or CCS)
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Mohd Noh, M.G., Hor, W.V., Jalani, M.Y.J. , and M.A. Mas'od. "Optimising Energy Footprint for Offshore CO2 Separation and Transportation (or CCS)." Paper presented at the Offshore Technology Conference-Asia, Kuala Lumpur, Malaysia, March 2014. doi: https://doi.org/10.4043/25051-MS
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