Petrobras will start the first of two seismic acquisitions for the project to monitor the Sapinhoa field, in the pre-salt of the Santos Basin. Seismic acquisition is an important tool for managing the deposit (reservoirs) and for optimizing production systems, seeking to maximize the value of assets by increasing the recovery factor of deposits.
The contract signed with the company Seabed Geosolutions do Brasil includes the acquisition and 3D and 4D geophysical processing, with total investments of around US$ 118 million. The base seismic (3D), with an area of ??575 km square, is starting this month, and the seismic acquisition monitors (4D), with an area of ??478 km square, is expected to start in 2024.
The new surveys will use a technological solution called Ocean Bottom Nodes (OBN), which allows for better collection of information on the deposit from sensors installed on the ocean floor to obtain better seismic response in geologically complex areas such as the pre-salt. Surveying 3D geophysical data at different times, or 4D acquisition, allows geoscientists and reservoir engineers to track fluid displacement, observe oil and water saturation variation, and identify effects of rock-fluid interaction and geomechanical behavior of reservoirs, contributing to better management of oil recovery from the deposit and development of production.
Petrobras is the operator of the concession where the Sapinhoá field is located, with a 45% interest, in partnership with Shell Brasil Petróleo Ltda. (30%) and Repsol Sinopec Brasil SA (25%).
