A Systematic Approach to Source-Sink Matching for CO₂ EOR and Sequestration in South Sumatera

Carbon dioxide for enhanced oil recovery (CO₂ EOR) can magnify oil production substantially while a consistent amount of the CO₂ injected remains sequestrated in the reservoir, which is beneficial for reducing the greenhouse gas (GHG) emission. The success of CO₂ EOR sequestration depends on the proper sources-sinks integration. This paper presents a systematic approach to pairing the CO₂ captured from industrial activities with oil reservoirs in South Sumatra basin for pilot project. Inventories of CO₂ sources and oil reservoirs were done through survey and data questionnaires. The process of sources-sinks matching was preceded by scoring and ranking of sources and sinks using criteria specifically developed for CO₂ EOR and sequestration. The top candidate of CO₂ sources are matched to several best sinks that correspond to added value, timing, injectivity, containment, and proximity. Two possible scenarios emerge for the initial pilot where the CO2 will be supplied from the gas gathering station (GGS) while the H₃ and F₂₁ oil fields as the sinks. The pilot is intended to facilitate further commercial deployment of CO₂ EOR sequestration in the South Sumatera basin that was confirmed has abundant EOR and storage sinks as well as industrial CO₂ sources.