For several years, Southeast Asia fields with high concentration of CO2 have been developed and have reached a mature state in production whereas in the Brazilian deep offshore environment, not only it is a novelty, but dealing with such an element brings forth several challenges, requiring additional technology and as much know-how on such issue as it may exist, especially considering the financial and technical adversities that production of deep offshore pre-salt fields entails.

In spite of the significant difference in geology, API degree and phase development of these fields, this paper analyzes the possible applications and knowledge between Asia Pacific and Brazil, concerning the lessons and expertise in mature CO2 rich offshore fields in order to predict issues that are likely to arise up until the production stage and promoting ways to mitigate these issues.

Such a correlation becomes quite substantial when one considers that during the past year, companies operating in Brazil have started to experiment with different EOR techniques such as WAG (Water-Alternating-Gas)using CO2 (which can be more collaborative and efficient in its sweeping effect), and that until now hadn't been tested in pre-salt fields rich in CO2. These techniques were, all the same, proven successful in fields of Southeast Asia with similar CO2 characteristics. Thus, an entirely new opportunity may surface: the application of the Asian experience on field development expressly taking into account the high level of CO2 present in both Asian fields and the recently discovered giant fields of Brazil also associated to very high CO2 quantities. This is definitely not a one-sided flow of know-how and experiences, since the technologies developed for the pre-salt can also be applied in Asian a mature field, which demand even less of a risk and comprises of a lesser complex environment, and can only be favored by further production.

This paper intends to comparatively examine two major petroleum regions of the world, to highlight the numerous similarities with several documented case studies and to analyze possible two way know-how exchange between fields of the Asia-Pacific region and those of the Brazilian pre-salt.

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