Banca de DEFESA: MATHEUS CRUZ LIMA PEREIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : MATHEUS CRUZ LIMA PEREIRA
DATA : 20/01/2021
HORA: 09:30
LOCAL: defesa remota
TÍTULO:

1D MODELING OF THE THERMAL EVOLUTION OF ORGANIC MATTER IN BARREIRINHA FORMATION, AMAZON BASIN, BRAZIL.

PALAVRAS-CHAVES:

Amazonas Basin, Barreirinha Formation; 1-D modeling; Thermal Maturity; Igneous intrusions; Geochemistry.

PÁGINAS: 145
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
SUBÁREA: Geologia
ESPECIALIDADE: Geoquímica
RESUMO:

The Amazon Basin is an intracratonic basin well known for hosting large
volumes of basic magmatism (basalt and diabase) along its stratigraphic
sections. The contact between these rocks was able of altering the geochemical
parameters of the hydrocarbons source rocks, providing for the occurrence of
atypical petroleum systems in that area. The Barreirinha Formation, the
hydrocarbon source rock of this basin, was under the effect of heat from
magmatic intrusions, in addition to that caused by the burial. The main objective
of this work is to quantify and qualify the organic matter present in these rocks
through geochemical characterization and thermal evaluation made by 1-D
modeling. The TOC content (wt%) in the samples from the Barreirinha
Formation ranged from 3 to 8% (good to excellent quantity of organic matter),
with types I, II, II / III, III and IV (the latter residual), showing a thermal evolution
towards the depocenter of the basin and in those wells with the presence of
igneous intrusions close to or within the formation (1-BL-01-PA and 2-OAST-1-
PA). For this work, the Behar kinetics (1990) type TII (PB) and the thermal
evolution model Easy_Ro% were used. For the modeling, data from Pirolise
Rock-Eval, reflectance of vitrinite and well-bottom temperature (BHT) were used
as calibration parameters. The modeling showed that in the wells located on the
platform, the Barreirinha Formation did not reach thermal maturity for the
hydrocarbon generation, except in the well 1-BL-01-PA, where it presented
maturity corresponding to the beginning of the oil generation window. In the
wells located in the depocenter, the leaves of the Barreirinha Formation showed
a greater tendency to generate gas, reaching the hydrocarbon generation
window during the passage to the Cretaceous. The 2-OAST-1-PA well allowed
a punctual analysis of the effect of the intrusive rock along the contact halos,
showing areas of oil, dry gas and wet gas generation. The results of these
models were: the understanding of the depositional history of the basin, mass
generation (Mtons), models of thermal evolution, showing oil and gas
generation windows and the transformation rate. From these models it was
possible to identify the hydrocarbon generation window in the Basin in different
depths, which were associated with the effects of burial and magmatism
(Penatecaua or CAMP).

MEMBROS DA BANCA:
Externo(a) à Instituição - HELIO JORGE PORTUGAL SEVERIANO RIBEIRO - UENF
Interno(a) - 268681 - JOIL JOSE CELINO
Presidente - 950.990.506-20 - KARINA SANTOS GARCIA - UFF