Analysis of Natural Gas Production in Pre-Salt via Pipelines with MEG and Onshore Processing

Abstract:

The exploration of pre-salt introduces challenges beyond those posed by ultra-deep waters and the thick of carbonaceous reservoirs. Among the main difficulties are the high gas-oil ratio and the high content of carbon dioxide (CO₂) present in the gas. This paper proposes an alternative to the technology currently used in the exploration of pre-salt, in which the gas is treated on the platform. The proposed alternative is applicable to reservoirs which CO₂ concentration in gas is greater than 50%, like Jupiter that contains 79% of CO₂. For this scenario is suggested that exploration occurs in three production areas: subsea, offshore and onshore. The proposed technology includes the construction of three subsea pipelines: one for the transportation of untreated gas (that is treated onshore); a second for the return of the recovered hydrate inhibitor (in order to be re-injected into the gas pipe) and the last for the return of the carbon dioxide stream separated from the gas.

• Periodical: Applied Mechanics and Materials (Volume 830)
• Pages: 85-92
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.830.85
• Online since: March 2016
• Authors: Jéssica dos Santos Cruz de Almeida*, José Luiz de Medeiros, Ofélia de Queiroz Fernandes Araújo
• Keywords: Carbon Dioxide, Pre-Salt, Process Simulation, Subsea Pipelines

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