Banca de DEFESA: JOSÉ PAULO DE MELO GOULART

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : JOSÉ PAULO DE MELO GOULART
DATE: 23/12/2025
TIME: 14:00
LOCAL: Videoconferência
TITLE:

STUDY OF TURBIDITE COMPLEXES AND ASSOCIATED PETROLEUM SYSTEMS IN THE MARGINAL BASINS OF THE CENTRAL SECTOR OF THE BRAZILIAN EQUATORIAL MARGIN

KEY WORDS:

gas chimney; oil exploration; seismic attributes; Direct Hydrocarbon Indicator; Barreirinhas Basin

PAGES: 89
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUMMARY:

Sedimentary basins in new exploration frontiers are considered high-risk exploration areas. Increasing the chances of success is one of the main objectives of a hydrocarbon exploration company, especially in a frontier basin such as the Barreirinhas basin. One of the main objectives of this work is to increase the chances of success by revealing exploration opportunities with Direct Hydrocarbon Indicators (DHIs) and with sufficient area to generate an economic accumulation, through the study of seismic attributes. Seeking to reduce these risks, 5,450 km of 2D seismic lines were interpreted in the central sector of the Brazilian Equatorial Margin, in the Barreirinhas Basin, focusing on mapping structures similar to those found in the giant fields of the West African margin, which also had Direct Hydrocarbon Indicators (DHIs) and could be validated by seismic attributes, which are powerful tools in monitoring and predicting the presence of hydrocarbon zones. Seismic attributes such as chaos, RMS amplitude, instantaneous amplitude or envelope, instantaneous phase, and apparent polarity were generated and enhanced in terms of quality, which helped identify seven exploratory opportunities in this sedimentary basin. Three special frequency attributes were also used to highlight the low and high frequencies of the seismic signal. The LFE (Low Frequency Enhancement) attribute enhances low frequencies, facilitating the mapping of gas chimneys that have their strongest amplitude in this frequency range. The HFE (High Frequency Enhancement) attribute favors the visualization of high frequencies, increasing vertical seismic resolution and allowing the mapping of thin reservoirs. The third attribute was LHFE (Low and High Frequency Enhancement), which combines the two previous attributes and facilitates the mapping of turbidites, faults, gas chimneys, and other IDHs, providing more reliable interpretation. The survey revealed the presence of three turbidite complexes that were identified and verified using frequency attributes, showing the presence of IDHs that greatly contributed to reducing exploration risk. Seven exploration opportunities were also mapped, clearly highlighting the presence of IDHs emphasized in their seismic images by the various attributes obtained in Petrel.

COMMITTEE MEMBERS:
Presidente - 1315614 - DAVID LOPES DE CASTRO
Externo à Instituição - JORGE DE JESUS PICANÇO DE FIGUEIREDO
Interno - 2042405 - MOAB PRAXEDES GOMES
Externo ao Programa - ***.611.213-** - PEDRO XAVIER NETO - UFRN
Externo à Instituição - WEBSTER UEIPASS MOHRIAK - UERJ