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Depression of the Earth's crust where sedimentary rocks accumulate, which may contain oil and/or gas, whether associated or not.

A stock tank barrel, a standard measure of petroleum volume corresponding to about 159 liters.

Part(s) of a sedimentary basin, with a polygonal surface defined by the geographical coordinates of its vertices and undetermined depth, where exploration or production activities of petroleum and natural gas are developed.

Volume measure of gas converted to barrels of oil using a conversion factor (1,000 m³ of gas = 1 m³ of oil/condensate and 1 m³ of oil/condensate = 6.29 barrels).

Also known as a blowout preventer, it is a safety device used on oil platforms to prevent blowouts during the drilling or production of oil wells. It consists of a set of valves and mechanical devices that are automatically or manually activated in case of emergency, preventing subsurface content from reaching the sea.

Mixture of petroleum produced in the North Sea, originating from the Brent and Ninian petroleum systems, with an API degree of 39.4° and sulfur content of 0.34%.

Equipamento composto de carreteis (spools), válvulas e adaptadores conectados à parte terminal superior do poço, que garante vedação, controle de fluxo e sustentação mecânica dos equipamentos suspensos, tais como tubing e revestimentos.

Equipment composed of spools, valves, and adapters connected to the upper terminal part of the well, ensuring sealing, flow control, and mechanical support of suspended equipment, such as tubing and casings.

Fields that have already surpassed their production peak; that is, the volume of hydrocarbons extracted has reduced the internal energy of the reservoir, resulting in a natural decline in production.

Campos que já ultrapassaram seu pico de produção, ou seja, o volume de hidrocarbonetos extraído reduziu a energia interna do reservatório, acarretando declínio natural da produção.

The certification and declaration of mineral resources and reserves is a process carried out by major companies in the sector to raise funds in stock exchanges or negotiate mineral projects with other companies. The document contains the estimated reserve of that field with data confirming the indicated value.

Process of making the well ready for production.

State grant of the right to access a certain area for a specified period (usually through a competitive process), transferring certain rights from the country to the concessionary company for petroleum and natural gas exploration and production activities.

Natural gas liquid obtained in the normal field separation process, which remains in the liquid phase under normal pressure and temperature conditions.

Reservoir pressure drop that can be detected during a formation test or as a result of oil and/or gas production from the reservoir of an oil field.

According to the Petroleum Law, it is a new finding of petroleum, natural gas, or other resources within the concession, confirmed by at least two evaluation methods (following ANP specifics). To be considered commercial, a discovery must present positive returns under market conditions for its development and production.

Earnings before interest, taxes, depreciation, and amortization expenses.

Environmental Impact Study and its counterpart, the Environmental Impact Report. The study contains all information required to analyze potential impacts of a project, while the report aims to simplify the study's language to facilitate understanding for all stakeholders.

Also known as emission rates, are the total emissions of an activity divided by a metric that best describes its main activity. For PRIO, for example, they are the total emissions divided by the total production.

Process of partial or total acquisition of concession rights held by another company. In the same transaction, the company acquiring the concession rights is in a farm-in process, and the company selling them is in a farm-out.

System aimed at collecting and burning hydrocarbon vapors from petroleum equipment in a safe area. In operations, it resembles a chimney.

Floating Production Storage Offloading. Floating production, storage, and offloading unit built from a ship.

Floating oil production unit, built from a ship.

Floating storage and offloading unit, built from a ship.

High-speed ship for supplying cargo and passengers.

Artificial oil lifting method involving the injection of gas under pressure into the production column through valves near the producing interval. The gas mixes with the oil, reducing its average density, allowing reservoir pressure to lift the oil to the surface.

A way to express the relative density of oil or its derivatives. The API scale varies inversely with relative density. Oils with higher API degrees are lighter and more valuable.

Any hydrocarbon or mixture that remains gaseous under normal atmospheric conditions, extracted directly from petroleum or gas reservoirs, including wet, dry, residual, and rare gases.

Organic compound consisting only of carbon and hydrogen. Petroleum and natural gas are examples.

Sixth-generation submersible rig acquired by PRIO in 2022, operational in 2023. Capable of drilling in water depths up to 3,000 meters and wells up to 10,000 meters deep.

PRIO's sponsorship platform investing in over 40 projects focusing on education, social development, culture, and sports.

Ratio between the volume of reserves added during the year and the total volume produced in the same year.

Number of exploratory wells with commercial oil and/or gas relative to the total drilled and evaluated in the current year.

Support structure of a fixed platform extending from the foundation to above sea level, upon which the deck and modules are installed housing the process and utility units.

Accumulation of petroleum or mineral deposit identified by research methods but not yet dimensioned or economically evaluated.

Administrative procedure where ANP establishes minimum requirements for companies proposing to conduct petroleum and natural gas exploration and production activities via concession contracts.

Installations for fluid movement or control of subsea equipment, including flowlines, transfer pipelines, production lines, injection lines, service lines, umbilicals, and electrical cables.

Part of natural gas in the liquid phase under certain surface conditions, obtained in field separation processes or gas processing units.

Average operational cost to extract each barrel of oil, excluding government royalties and special participation fees.

Licensing stage authorizing the conception and location of a project.

Final license authorizing the execution of a specific activity.

Portion of the oil column including only reservoir rock intervals saturated with oil and/or gas, defined by porosity, permeability, and minimum hydrocarbon saturation.

Heavier fractions from petroleum distillation, widely used as industrial fuel.

Portion of petroleum in the liquid phase under reservoir and surface conditions.

Vessel equipped to combat oil spills, capable of operating in environments where evaporating oil produces natural gas.

Set of operations for transporting oil produced by the maritime unit, starting with the shuttle tanker's approach and ending with its departure after cargo transfer.

Company's planned actions to prevent and mitigate potential oil spills within operational units.

Company's planned actions to prevent and mitigate potential oil spills at sea.

Work program offered by oil companies for each block bid in ANP auctions, to be fulfilled during the Exploration Phase.

Method to evaluate the physical and chemical characteristics of geological layers and their fluids using appropriate sensors, with data processed by surface computers.

Offshore platform with legs that can be positioned at different depths, elevating above the sea surface. 

Field in the Campos Basin acquired by PRIO in 2016, interconnected with Tubarão Martelo via subsea tieback.

Well that penetrates reservoirs horizontally, allowing greater reservoir contact and higher flow rates than vertical wells.

Petroleum reserves beneath a deep salt layer, often exceeding depths of 7,000 meters, containing high-quality light oil.

Probability of discovering a commercial accumulation of oil and/or natural gas, estimated by multiplying the probabilities of various geological factors.

Supply ship for platforms, transporting equipment, liquids, and bulk solids.

Free educational program sponsored by PRIO to prepare professionals for the offshore job market.

Estimated volumes in a discovered accumulation requiring further analysis or technology to be commercially viable.

Total potential resources multiplied by the probability of success.

Discovered volumes of oil and/or natural gas commercially recoverable through development projects.

Quantity of oil estimated to have a 50% chance of being achieved or exceeded.

Financial compensation owed to the state by oil and natural gas producers in Brazil, distributed to various governmental bodies per legislation.

Oil and gas reserves estimated to be commercially recoverable with high certainty under current conditions.

Exploratory method using sound waves to map subsurface geological formations. Sound signals are emitted into subsurface rock layers. Energy reflects at interfaces between rock layers. Reflected signals are captured by receivers. Data are processed into images representing subsurface formations.

Data acquired along straight lines with large spacing, providing imprecise subsurface images.

High-density data grids providing precise, three-dimensional subsurface images.

Wireline operation collecting rock plugs during drilling to obtain rock and fluid characteristics.

Operação de amostragem contínua das rochas do poço, que são trazidas à superfície para a análise dos geólogos. Inúmeras informações a respeito das características da rocha são obtidas: tipo de rocha, porosidade, permeabilidade, indícios de hidrocarbonetos, fraturas, etc.

Method to evaluate a reservoir's production capacity, characterizing fluids, pressures, and productivity.

Long-duration formation tests exceeding 72 hours during exploration to understand reservoir behavior.

Involves buying and selling oil contracts to profit from price fluctuations, using instruments like futures, options, and CFDs.

Floating platforms used in deep waters, fixed with tensioned cables, supporting wellheads with dry completion.

Refere-se às atividades de Exploração, Desenvolvimento da Produção e Produção, englobando a  busca, delimitação, desenvolvimento da produção e produção de petróleo e/ou gás natural. Usualmente as atividades e operações de Upstream incluem o transporte do óleo e/ou gás natural do poço produtor até um ponto de entrega, que pode ser um Navio Tanque junto à plataforma de produção ou oleoduto/gasoduto até um Terminal Downstream.

Activities involving exploration, development, and production of oil and/or natural gas, including transportation to a delivery point.

Largest class of tanker ships used for long-haul transport, each carrying about 2 million barrels of oil.

Oil with API gravity between 38 and 40 and approximately 0.3% sulfur, whose spot market price reflects barrels delivered in Cushing, Oklahoma, USA.

The first field to be fully developed by PRIO, viable due to tieback technology interconnecting operations via subsea pipelines. Oil from Wahoo will be transported 35 kilometers to the FPSO Valente/Frade, with operations expected to start in 2025.

Classifications for petroleum resource estimates, indicating increasing uncertainty from the most conservative (1C) to the most optimistic (3C).

Quantity of oil that can be estimated with reasonable certainty to be commercially recoverable from known reservoirs under current conditions.