Geological process modeling and geostatistics for facies reconstruction of presalt carbonates

Ferreira, Danilo Jotta Ariza; Dutra, Henrique Picorelli Ladeira; Castro, Thais Mallet de; Lupinacci, Wagner Moreira

doi:10.1016/j.marpetgeo.2020.104828

Cited by 22 publications

(4 citation statements)

References 25 publications

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“…3). Previous works were also fundamental for a better understanding of the sedimentarytectonic history of the study area (Castro, 2019;Ferreira et al, 2021aFerreira et al, , 2021b.…”

Section: Methodsmentioning

confidence: 99%

Application of Seismic Architecture Interpretation in Pre-salt Carbonate Reservoirs of the Buzios Field, Santos Basin, Offshore Brazil

et al. 2021

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ABSTRACT. The Brazilian pre-salt carbonate reservoirs, in deep water, are examples of interesting places for oil and gas industry exploration due to their high production capacity. Oil and gas companies are often collecting information about the geology and the reservoir’s characteristics to improve its understanding and consequently optimize the production results. Seismic interpretation is mandatory for the understanding of geology, always pondering reducing the risks during exploration. Seismic and well data are commonly used together as a useful approach to comprehend the geological history and provide a good reservoir characterization. In this paper, we performed the seismic interpretation of the pre-salt carbonate reservoirs of the Buzios Field, Santos Basin, and used seismic attributes to obtain a better comprehension, as the TecVA attribute. Also, we generated isopach maps for a better understanding of reservoir intervals. As a result, we achieved a better definition of fault distribution and tectonic behavior, as well as determined the main interval thickness and the possibility of build-up and coquina bank occurrence.Keywords: seismic interpretation, reservoir characterization, pre-salt.Aplicação da interpretação da arquitetura sísmica em reservatórios carbonáticos do pré-sal no Campo de Buzios, Bacia de Santos, offshore do BrasilRESUMO. Os reservatórios carbonáticos do pré-sal brasileiro, em águas profundas, consistem em um dos locais mais procurados pela indústria de energia devido à sua capacidade de produção. Empresas de óleo e gás estão frequentemente adquirindo novas informações sobre a geologia e a caracterização de reservatórios, para melhorar seu entendimento e, consequentemente, otimizar os resultados da produção. Dados sísmicos e de poços são comumente usados juntos como uma abordagem útil para compreender a história geológica e fornecer uma boa caracterização do reservatório. A interpretação sísmica é obrigatória para o entendimento da geologia, sempre pensando em reduzir os riscos durante a exploração e a produção, auxiliando na compreensão da história geológica, além de fornecer informações necessárias para a caracterização do reservatório. Neste trabalho, realizamos a interpretação sísmica das principais discordâncias da seção do pré-sal do Campo de Búzios, Bacia de Santos, com o auxílio do atributo TecVA. Mapas de isópacas também foram gerados para um melhor entendimento das seções dos reservatórios. Como resultados, obtivemos uma melhor definição da distribuição de falhas e comportamento tectônico, bem como determinamos a espessura do intervalo principal e a localização de possíveis build-ups e bancos de coquinas. Palavras-chave: interpretação sísmica, caracterização de reservatórios, pré-sal.

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“…3). Previous works were also fundamental for a better understanding of the sedimentarytectonic history of the study area (Castro, 2019;Ferreira et al, 2021aFerreira et al, , 2021b.…”

Section: Methodsmentioning

confidence: 99%

Application of Seismic Architecture Interpretation in Pre-salt Carbonate Reservoirs of the Buzios Field, Santos Basin, Offshore Brazil

et al. 2021

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“…Geological processes modelling (SFM) is a 4D reservoir characterization technique that allows sedimentary models building based on simulation of physical and chemical mechanisms which control deposition on sedimentary basins (Ferreira et al, 2021). By integrating data with different scale and resolution, SFM method provides a better perspective of sedimentary dynamic evolution and the resulting architectonic features of a reservoir (Hamon et al, 2021).…”

Section: Stratigraphic Forward Modellingmentioning

confidence: 99%

Impact Assessment and Input Parameters Selection for Stratigraphic Forward Modelling (Sfm)

Boing

Soares²,

Bazzo

et al. 2022

BJPG

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In deep-water reservoirs, predicting geometry of sedimentary bodies and distribution of facies become inefficient due to data limitations. Stratigraphic forward modelling (SFM) appears as an alternate geological modelling method. High uncertainty is related to definition of input parameters and calibration of the SFM models. This study assesses responses and respective sensitivities of models from the Morro do Chaves Formation (Sergipe/Alagoas Basin) by carrying out SFM multi-realizations. These assessments allow the evaluation and reduction of uncertainties to define input parameters capable of generating models more suitable to the data observed.

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“…However, more than ten years after its discovery, operations in the pre-salt carbonates continue to present challenges in terms of drilling, production, and also in relation to the reservoir characterization [4,5]. Pre-salt carbonate reservoirs are highly complex and heterogeneous [2,6,7], a feature justified by the nature of the original deposition system and the subsequent diagenetic processes [2].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Multi-Objective Optimization of the Rate of Penetration and Mechanical Specific Energy: A Case Study Applied to a Carbonate Hard Rock Reservoir Based on a Drill Rate Test Using Play-Back Methodology

Mantegazini,

Nascimento,

Dornelas

et al. 2024

Applied Sciences

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Until early 2006, in Brazil, the focus used to be on oil and gas exploration/exploitation of post-salt carbonates. This changed when the industry announced the existence of large fields in pre-salt layers across the South Atlantic Ocean from nearshore zones up to almost 350 [km] from the shore. With the discovery of pre-salt hydrocarbons reservoirs, new challenges appeared. One of the main challenges is the necessity to optimize the drilling processes due to their high operational costs. Drilling costs are considerably high, which leads the oil and gas industry to search for innovative and entrepreneurial methods. The coupling of the mechanical specific energy (MSE) and the rate of penetration (ROP) is a method that allows for the identification of ideal conditions to efficiently enhance the drilling process. In addition, the performance of the drilling process can be estimated through pre-operational tests, which consist in continuously testing the applied drilling mechanic parameters, such as the weight-on-bit (WOB) and drill string rotary speed (RPM), looking for optimum sets that would ultimately provide the most desirable ROP. Thus, the goal of this research was to analyze field data from pre-salt layer operations, using a multi-objective optimization based on the play-back methodology for pre-operational drilling tests, through the ideal combination of the highest ROP and the lowest MSE. The results showed that the new concept of pre-operational tests based on the MSE proved to be effective in the drilling process optimization. The combination of the highest ROP and the lowest MSE allows for a high-performance drilling process. For WOB intervals of 5 and 7 [klb], a good fit of the parameters was obtained. Through the parameters obtained from pre-operational tests, the eventual cost-saving and time-saving values could be estimated, respectively, ranging from USD 1,056,180 to 1,151,898 and 19.50 to 21.27 [h], respectively. In addition, the results of this research can be applied to the exploration of other natural resources, such as natural hydrogen and geothermal sources.

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Geological process modeling and geostatistics for facies reconstruction of presalt carbonates

Cited by 22 publications

References 25 publications

Application of Seismic Architecture Interpretation in Pre-salt Carbonate Reservoirs of the Buzios Field, Santos Basin, Offshore Brazil

Application of Seismic Architecture Interpretation in Pre-salt Carbonate Reservoirs of the Buzios Field, Santos Basin, Offshore Brazil

Impact Assessment and Input Parameters Selection for Stratigraphic Forward Modelling (Sfm)

Analysis and Multi-Objective Optimization of the Rate of Penetration and Mechanical Specific Energy: A Case Study Applied to a Carbonate Hard Rock Reservoir Based on a Drill Rate Test Using Play-Back Methodology

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