International Journal of Geoscience, Engineering and Technology

Editorial Team and Contents Volume 9

Antônio Jorge de Lima Gomes, Jorge Luiz dos Santos Gomes — Tue, 30 Apr 2024 00:00:00 +0000

Editorial Team and Contents.

Editorial to the ninth issue of the International Journal of Geoscience, Engineering and Technology

Antônio Jorge de Lima Gomes, Jorge Luiz dos Santos Gomes — Tue, 30 Apr 2024 00:00:00 +0000

Editorial to the ninth issue of the International Journal of Geoscience, Engineering and Technology.

Well Log Data Statistical Processing for Unbiased Qualitative and Quantitative Analyses: Case Study from the Gulf of Guinea

André Noukpo Djoï — Tue, 30 Apr 2024 00:00:00 +0000

Over oil and gas fields exploration and development phases, one of the main challenges of geoscientists and petroleum engineers is the petrophysical characterization of potential or discovered fields or reservoirs. Well logs data play key roles in wells stratigraphic column establishment and the computation of reservoir formations petrophysical parameters. Due to the conditions and the environment of well log data acquisition, they undergo some technical processing. For gamma ray log data for instance, although the technical data processing, the representative minimum and maximum values of recorded GR are required for unbiased qualitative and quantitative analyses. This study aims to propose statistical techniques for gamma ray logs data processing that will contribute to the reduction of biases related to their qualitative and quantitative analyses. A case study has been performed on a Gulf of Guinea’s offshore well gamma ray log data. The results show that the difference between the maximum and minimum values for the semi-processed data is almost twice the one of the processed data, what will lead to the underestimation of formations shale volumes and therefore to the overestimation of reservoirs effective porosity and flow performance. Moreover, the baselines (shaly sand, sandy shale and shale baselines) obtained from the semi-processed data are respectively located more leftward to those from the processed data. The main consequence is that the semi-processed data analysis has hidden the shaliness of formations comparatively to the processed data analysis. A comparative analysis shows that the semi-processed data analysis has globally underestimated the thickness of thicker formations and underestimate the shale volumes of thicker formations and those for which the estimated thicknesses from both analyses are the same or close to each other. In summary, the statistical processing of gamma ray log data prevents from the underestimation of thicker formations thicknesses and formations shale volumes. The main practical advantage is that it will prevent geologists, petro-physicists and reservoir engineers from the overestimation of oil or gas reservoirs effective porosity and flow performance and therefore from the overestimation of oil or gas initially in place and reserves.

Experimental Investigation of Resin Produced with PET Applied to the Surface of Wooden Fence Posts

Tue, 30 Apr 2024 00:00:00 +0000

Polyethylene terephthalate (PET) stands out as a recyclable material of great importance, its versatility makes it a valuable resource in industry, ensuring the conservation of natural resources and the minimization of waste when disposed of correctly. The search for an alternative method to increase the useful life of wood used as fence posts is necessary given the current use of toxic materials, such as the use of Copper-Chromium-Arsenic (CCA), a material harmful to humans and the environment. In this sense, this work presents the development of a polymeric resin, obtained through the depolymerization process, from PET discarded with a glycerin solution. The resin resulting from depolymerization, once applied to the surface of eucalyptus (Eucalyptus Cloeziana), in proportions of 4:1 (PET: Glycerin), presented a texture similar to a varnish and, after drying, proved to be efficient in protecting of wood. The field tests carried out revealed that, even though the resin applied to some test bodies had peeled off, the wood absorbed a much smaller amount of water when compared to wood not coated with resin, regardless of whether the wood was treated or not previously with CCA.

Survey of some points of landslide risk areas in the city of Teófilo Otoni/MG

Tue, 30 Apr 2024 00:00:00 +0000

With the growth of the population, there is the occupation of areas that are not suitable for construction and even the occupation with undesigned buildings. Consequently, risk areas and accidents with landslides have been increasingly frequent in Brazil. Cities with high elevation relief, such as Teófilo Otoni, face this problem even more. The objective of this study was to highlight some risk areas in the Manoel Pimenta neighborhood in the city of Teófilo Otoni. For this survey, the methodology of classification of risk areas of the Ministry of Cities was used. Risk grade areas R3 and R4 were found, showing the need to implement measures in order to reduce or prevent the impacts caused in these areas.

The use of The Million's Show as learning methodology in the teaching of work engineering subject

Tue, 30 Apr 2024 00:00:00 +0000

Currently, with the technological advances, it can be noticed that the use of different methodologies of applied learning objects, are capable to attract students in a fun and interactive ways, so they can learn, test their knowledge, and put into practice the knowledge that was taught in the subject of work engineering. This article was based on the famous Million's Show, which has as the main goal, to be a game of individual questions and answers, which the player must correctly answer each question to reach the end of the game and win. This game was made in the Learningapps website, which is a tool capable of easily editing the game’s contents, been able of making the changes inside the website itself.

The Moisture Content and Specific Mass: Soil Characteristics directly influenced by water

Tue, 30 Apr 2024 00:00:00 +0000

The article discusses the results of the tests carried out in practical form in which they were used to determine the specific mass of the grains (ρs) and the moisture content of a soil (ω), for this, through stages and laboratory methods, the soil behavior could be analyzed, thus being able to determine these respective values, in order to seek to understand some of the characteristics that the soil physically presents. To determine the specific mass of grains (ρs) of the soil sample, the method used was the test using the pycnometer method, defined by the Brazilian Regulatory Standard - ABNT NBR 6458, in its Annex B; and to determine the moisture content (ω), the test was performed through the greenhouse, following the Brazilian Regulatory Standard - ABNT NBR 6457, Annex A. Thus, it was possible to analyze with good reliability the results obtained in these trials, which through three achievements, especially because they were performed at different duration times, thus being possible to perceive that the values for these specific mass determinations of grains (ρs) and moisture content (ω), are practically the same, regardless of the time used in some stages or in the exclusion of some of them, being the amount of water, the factor directly linked to these characteristic points that were analyzed.

Landslide Risk Analysis on Riccioti Míglio Street and Minervino de Castro Pinto Street in the city of Teófilo Otoni

Tue, 30 Apr 2024 00:00:00 +0000

The records of impacts resulting from disasters in risk areas point to the urgent need for protection measures, given that the prevention of this occurrence requires joint actions, especially for those involving civil protection, housing, infrastructure, education and health. However, human interventions and natural hazards collaborate to destabilize the soil and increase the degree of a phenomenon that causes adverse effects. In this context, this research aims to identify and classify the degree of risk in isolated points located in the central intermediates of the municipality of Teófilo Otoni, in the state of Minas Gerais, where there are signs of landslides. These points are located on Rua Riccioti Míglio (Point 1 and Point 2), in the Ipiranga neighborhood, and on Rua Minervino de Castro Pinto (Point 3), in the Centro neighborhood. The method used takes into account the availability of an emergency landslide risk registration script, made available by the Ministry of Cities to determine the degree of risk of the occurrence of land mass movement. The study involves the analysis of Point 1, Point 2 and Point 3, which were classified with risk level R4, falling into very high risk areas, and stabilization and safety measures must be taken. With regard to the occupation of urban territorial spaces under development, such as in the municipality of Teófilo Otoni, there is a lack or inefficiency in the application of norms aimed at monitoring the use and occupation of areas classified as at risk.