CO2 EOR Concept and pre-FEED Studies
Location: Middle East
+ Independent assessment of a wide range of CO2 recovery technologies, including revolutionary new technologies that are approaching the market;
+ In-depth appreciation of the complexities of modifying existing infrastructure to accommodate CO2 EOR as well as a thorough knowledge of the current state of technologies available to enable high pressure CO2 transportation, injection and production; and
+ Focus on balancing minimisation of initial capital expenditure with ensuring future expandability of the overall CO2 EOR scheme.
The operators of a large mature offshore oil field in the Middle East are considering the use of CO2 Enhanced Oil Recovery (EOR) as one of a number of schemes for boosting production in the long term development plan for their field. The field being considered has been in production since the mid-1960s and has total proven reserves of approximately 17 billion barrels of oil with current average production of circa 400,000 barrels per day.
Xodus Group conducted a study to determine the overall technical and commercial feasibility of utilising CO2 captured from an existing onshore power generation system for enhancing the oil recovery of the existing offshore mature oil field.
The scope of the study was to examine all systems from the outlet of the carbon capture plant through to the systems required to support CO2 EOR in-field. The overall plan for the CO2 EOR scheme is to extend CO2 injection in stages across the entire field (which currently consists of a large number of production, gas injection and water injection platforms) as the quantity of available captured CO2 increases over time.
The study included the conceptual design of a subsea CO2 transmission pipeline and its associated compression station, new water-alternating-CO2 injection/production platforms, CO2 rich production pipeline network systems, central processing facility raw production treatment and CO2 recovery/recycle systems plus examination of the modifications required to existing infrastructure to support CO2 EOR.
+ Design of systems to enable significant future expandability of processing systems over full field life;
+ Integration of significantly altered production and processing systems into existing, ageing infrastructure; and
+ Design of systems to ensure that wide ranges of composition and flowrate as CO2 breaks through from a large number of injector/producer pairs over field life.
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