Banca de QUALIFICAÇÃO: CHAYANE VITORIA FELIX FONSECA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : CHAYANE VITORIA FELIX FONSECA
DATE: 18/08/2024
TIME: 14:00
LOCAL: Videoconferência / CCET
TITLE:

Study of the thermal setting of the Barreirinhas Basin based on the correction of temperature data obtained from exploratory wells

KEY WORDS:

Thermal disturbance, Geothermal gradient, Barreirinhas Basin

PAGES: 32
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUBÁREA: Geofísica
SPECIALTY: Geofísica Aplicada
SUMMARY:

Temperature measurements taken immediately after drilling may be the only source of temperature data in deep wells. However, these records are affected by the thermal disturbance of drilling and do not represent the actual rock temperature. The extent of this disturbance varies depending on factors such as the duration of drilling, logging procedures, and mud temperature. However, older well reports often lack this crucial information, complicating the application of conventional corrections to temperature records. This study aims to analyze the thermal configuration of the Barreirinhas Basin - Equatorial Margin of Brazil, using temperature data collected from exploratory wells. For this, 315 temperature data points from BHT, DST, and Graphic Extrapolations types from 67 wells were analyzed and corrected based on correction techniques described in the literature. The ultimate goal of this research is to estimate the geothermal gradient of the region, contributing to the understanding of subsurface thermal conditions that influence the development of petroleum systems in the basin. The analysis of geothermal gradients as a function of depth showed a clear trend of gradient decrease with increasing depth, especially at shallower depths, becoming consistent at greater depths. This observation aligns with previous studies indicating a systematic and non-linear variation of geothermal gradients concerning tectonic variables.

COMMITTEE MEMBERS:
Interno - 1315614 - DAVID LOPES DE CASTRO
Interno - 1506706 - MILTON MORAIS XAVIER JUNIOR
Externo à Instituição - PEDRO XAVIER NETO - UFRN