Infrastructure Sharing Creates Value for Brazilian Deepwater Offshore Assets
- Adam Wilson (JPT Editorial Manager)
- Document ID
- Society of Petroleum Engineers
- Journal of Petroleum Technology
- Publication Date
- October 2012
- Document Type
- Journal Paper
- 108 - 112
- 2012. Offshore Technology Conference
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- 70 since 2007
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This article, written by Editorial Manager Adam Wilson, contains highlights of paper OTC 23004, "Infrastructure Sharing: Creating Value for Brazilian Deepwater Offshore Assets," by Daniel C. Pedroso, SPE, Demetrius C. Abdala, and Luiz A.G. Pinto, Petrobras, prepared for the 2012 Offshore Technology Conference, Houston, 30 April- 3 May. The paper has not been peer reviewed.
Investments in infrastructure for deepwater production require a significant scale for achieving minimum economic returns. The infrastructure is normally planned to accommodate the peak production, and many of the assets may not be recovered or reused. Therefore, a significant spare capacity may arise in such assets. The use of spare capacity by other fields is a typical process in which both parties, the producer and the receiving facility, will benefit.
The development of deepwater offshore production is characterized by high capital expenditure (CAPEX), significant economy of scale, and, in many cases, the complete technical unfeasibility of reuse of the materials and equipment.
Production infrastructure, when located in deepwater, is normally initially installed for the exclusive use of a specific field that justifies a standalone development approach. Processing, compressing, and export capacities are designed to attend peak production. Therefore, some spare capacity will appear at some point, which may be constrained by the amount of water that is handled in the unit.
Evolution of the Production Infrastructure in Campos Basin
The production in the deepwater Campos basin of Brazil has guided the exceptional growth of Petrobras in the last two decades, providing the technological, human, and financial resources that enabled the discovery of the giant presalt fields in Santos basin, currently under development. Petrobras’ net daily production in the Campos basin (oil and gas) reached 1 million BOE (annual daily average) in 2000, 1.5 million BOE in 2004, and 1.8 million BOE in 2010 (1.66 million bbl of oil). Other companies produce approximately 150,000 BOE/D. The Campos basin is Petrobras’ main producing area, currently producing 83% of the company´s total output in Brazil. This production comes from 43 fields, including eight large oil fields in deep and ultradeep water, many of them developed using multiple production units. Petrobras’ proved oil reserves in the Campos basin are on the order of 10.7 billion bbl. The infrastructure already installed is extensive: Petrobras alone operates 40 floating production systems, 14 fixed platforms, and 6680 km of pipeline and flexible pipes in the area.
More recently, the activities began to focus on carbonate reservoirs below the presalt layer in the Sao Paulo plateau in water depths from 2000 to 3000 m. Several discoveries have occurred recently below the presalt in areas that are already in concession and are in production, sometimes with an existing production unit that faces the challenge of maintaining the economical feasibility under a low-oil-/high-water-production profile.
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