Petrobras, following up on the announcement made on 23 July 2025, has signed the Expenses and Volumes Equalisation Agreement with PPSA (Pré-Sal Petróleo S.A.), resulting from the Production Individualisation Agreement for the Jubarte Pre-Salt Shared Reservoir.
The amount owed by Petrobras to PPSA totals R$1.54 billion, payable in a single instalment by the end of October. Of this total, R$1.47 billion had already been provisioned in the financial statements for the second quarter of 2025, as disclosed in explanatory note 17.4 regarding Production Individualisation Agreements.

FPSO Maria Quitéria operates in the Jubarte field, pre-salt in the Espírito Santo portion of the Campos Basin
The negotiation process for equalisation between Petrobras (Jubarte Field) and the partners in the Argonauta Field—Shell Brasil Petróleo Ltda., Enauta Petróleo e Gás Ltda. (Brava), and ONGC Campos Ltda.—is ongoing and will be disclosed to the market upon conclusion.
As disclosed on 23 July 2025, approval of the Production Individualisation Agreement for the Jubarte Pre-Salt by Brazil’s National Agency of Petroleum, Natural Gas, and Biofuels resulted in the definition of proportional shares of each company in the shared reservoir: Petrobras 97.250 percent, Shell 0.430 percent, Brava 0.198 percent, ONGC 0.232 percent, and the Brazilian Union represented by PPSA 1.890 percent.
This new configuration requires negotiation of the Expenses and Volumes Equalisation Agreement to reconcile revenues derived from oil and natural gas production, incurred investment expenses, operating expenses, royalties, and special participation payments in proportion to the parties’ shares in the shared reservoir, in accordance with CNPE Resolution No. 8/2016 and ANP Resolution No. 867/2022. The period considered spans from signing of the BC-60 Concession Agreement (Jubarte) on 6 August 1998 to 31 July 2025, the day prior to the effective date of the Jubarte Pre-Salt Production Individualization Agreement.
Shared reservoirs occur where hydrocarbon accumulations extend across boundaries between different concession blocks or licensing areas, creating situations where multiple parties hold rights to portions of a single geological reservoir. Brazil’s regulatory framework establishes procedures for individualising production from shared reservoirs, determining each party’s proportional entitlement based on reservoir characteristics and ensuring equitable allocation of production, costs, and revenues.
The Production Individualisation Agreement defines the technical and commercial framework for allocating production and expenses among parties with interests in the shared Jubarte Pre-Salt reservoir. The resulting ownership shares reflect subsurface geological analysis determining the proportion of the reservoir underlying each party’s concession area.
Petrobras’s dominant 97.250% share indicates that the vast majority of the Jubarte Pre-Salt reservoir lies within the BC-60 concession area where Petrobras operates the Jubarte Field. The minor shares held by Shell, Brava, and ONGC reflect small portions of the reservoir extending into the adjacent Argonauta Field concession. The Brazilian Union’s 1.890% share represents the government’s direct interest through PPSA, established under the production sharing regime governing Brazil’s pre-salt petroleum resources.
The Expenses and Volumes Equalisation Agreement addresses the retrospective reconciliation of production, revenues, costs, and government payments over the 27-year period from the original BC-60 concession signing in 1998 through July 2025. During this extended period, production from the shared reservoir occurred under the operational control of different field operators without formal allocation reflecting the subsequently determined ownership shares.
The R$1.54 billion payment from Petrobras to PPSA represents the net financial settlement arising from this retrospective reconciliation. The payment indicates that PPSA’s proportional entitlement to revenues from production, less its share of costs and government payments, exceeds amounts previously allocated during the period before the Production Individualisation Agreement’s effective date.
Petrobras’s advance provisioning of R$1.47 billion in second-quarter 2025 financial statements demonstrates proactive financial management, recognising the anticipated liability before formal agreement signature. The provisioning minimised financial statement impact at settlement, with only R$70 million representing adjustment to the provisioned amount.
The ongoing negotiations with Argonauta Field partners address similar equalisation requirements among parties affected by the shared reservoir determination. These negotiations will establish financial settlements reflecting the retrospective reallocation of production, costs, and revenues among Petrobras and the Argonauta partners based on their respective ownership shares.
The regulatory framework governing shared reservoir individualisation in Brazil reflects international petroleum industry practices addressing unitisation—the joint development of reservoirs crossing concession boundaries. Unitisation agreements establish operational control, cost allocation, production allocation, and commercial arrangements enabling efficient reservoir development whilst protecting each party’s economic interests.
Brazil’s pre-salt petroleum resources, located in ultra-deepwater offshore areas beneath thick salt layers, represent world-class hydrocarbon accumulations discovered over the past two decades. The Jubarte Field, originally developed targeting post-salt reservoirs, subsequently identified pre-salt accumulations that proved to extend across concession boundaries, triggering the individualisation process.
The Production Individualization Agreement and associated equalization arrangements establish clear ownership and operational frameworks enabling continued efficient development of the Jubarte Pre-Salt reservoir whilst ensuring equitable treatment of all parties with interests in the shared resource. Resolution of these complex technical and commercial matters supports ongoing investment in Brazil’s strategic pre-salt petroleum province.
For more information visit www.nossaenergia.petrobras.com.br