August 12, 2019
Petrobras has begun environmental licensing to carry out a proprietary 4D seismic data acquisition mega-campaign with Nodes and to implement a permanent monitoring system in Santos Basin pre-salt areas. The campaign will involve 11 pre-salt areas with a minimum coast distance of 146km and a depth of operation between 1,300 and 2,500m: Sepia, Sapinhoá, Lula, Itapu, Tres Marias, Uirapuru, Sagitario, Iara, Mero, Buzios and Jupiter.
A total of 17,164 km² will be surveyed, with base surveys expected to begin between 2020 and 2023 and monitoring between 2023 and 2025.
The project foresees data acquisition in the areas of Uirapuru and Três Marias, concluded in the 5th pre-salt round in partnership with Petrogal, Equinor and ExxonMobil and Chevron and Shell, respectively.
There is also a forecast for the installation of a Permanent Reservoir Monitoring (PRM) in the Mero field area, the country’s first production sharing area, a project in partnership between Petrobras, Shell, Total, CNPC and CNOOC.
The maritime bases will be the ports of Rio de Janeiro and Niterói and the air bases will be the airports of Jacarepaguá (Rio de Janeiro – RJ) and Cabo Frio – RJ.
See the details of each campaign:
Sapinhoá
The first seismic acquisition will be in Sapinhoá. The node area consists of 568km², 1,050km² acquisition area and 1,797km² maneuvering area. The nodes will be arranged in rows and spaced 425m in the 117º direction and 368m in the orthogonal direction. The source vessel shall sail the azimuth lines 117º / 297 °
Lula
The acquisition in an area of nodes of 2,927km², 4,079km² of acquisition and 5,565km² of nodes will be arranged in the 120º direction with 650m spacing in this direction and 375m in the orthogonal direction. There will be an area of 523 km², inside the node polygon, where the nodes will be arranged 425m x 368m. The source vessel shall sail the azimuth lines at 120º / 300 °.
Itapu
Node area of 436km², acquisition area of 803km² and maneuvering area of 1,425km². The nodes will be arranged in the East-West direction with 500m x 500m spacing. The source vessel will travel east-west.
Três Marias
The acquisition in Três Marias consists of a 783km² node area, a 1,265km² acquisition area and a 2,017km² maneuvering area. The nodes will be arranged in the 123 ° direction with 500m x 500m spacing. The source vessel shall sail the azimuth lines 123º / 303 °.
Uirapuru
The acquisition in Uirapuru consists of a 1,510km² node area, 2,216km² acquisition area and 3,246km² maneuvering area. The nodes will be arranged in the 110 ° direction with 500m x 500m spacing. The source vessel shall sail the azimuth lines at 110º / 290 °.
Sagitario
The acquisition consists of a 685km² node area, 1,123km² acquisition area and 1,817km² maneuvering area. The nodes will be arranged in the 130 ° direction with 500m x 500m spacing. The source vessel shall sail on azimuth lines 130º / 310 °.
Iara
Acquisition in an area of nodes of 1,311km², acquisition area of 2,044km² and maneuvering area of 3,004km². The nodes will be arranged in the 150 ° direction with 500m x 500m spacing. There will be an area of 140km², internal to the node polygon, where the nodes will be equispaced 250m. The source vessel shall sail the azimuth lines at 150º / 330 °.
Sepia
Acquisition in a node area consists of 414km², 773km² acquisition area, and 1,367km² maneuvering area. The nodes will be arranged in the East-West direction with 500m x 500m spacing. There will be an area of 89 km², internal to the node polygon, where the nodes will be equispace 250m. The source vessel will travel east-west.
Buzios
Acquisition in a node area of 1,631km², acquisition area of 2,739km² and maneuvering area of 3,893km². The nodes will be arranged in the 65 ° direction with 500m x 500m spacing. The source vessel shall sail the azimuth lines 65º / 245 °.
Jupiter
The acquisition consists of an area of 2,173km² of nodes, 3,144km² of acquisition and 4,509km² of maneuver. The nodes will be arranged in the 130 ° direction with 500m x 500m spacing. The source vessel shall sail on azimuth lines 130 ° / 310 °.
Mero
The Mero acquisition consists of a PRM with a 309km² permanent receiver area, a 681km² acquisition area and a 1,277km² maneuvering area. The receivers, licensed together with the subsea facility for field production, will be arranged in the 117º direction with 100m spacing in this direction and 500m in the orthogonal direction. The source vessel shall sail the azimuth lines 117º / 297 °.
Source: epbr
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