bluuebunny/crossref_metadata_2025 huggingface dataset:
Comment intégrer un patient partenaire dans une équipe de soins ?
Authors: Tourniaire Nolwenn , Leseur Julie , Roy Agnès , de la Motte Rouge Aurélie , Pougheon Bertrand Dominique
Published: October 2023

Introduction : Il n’est plus rare aujourd’hui de rencontrer des patients ayant la connaissance et l’expérience d’un parcours de soins, intégrer une équipe de professionnels de santé afin d’améliorer la qualité et la pertinence du parcours de soins de leurs pairs. But de l’étude : L’objectif de cet article est de proposer, aux institutions et à tout acteur de la santé qui envisagent d’intégrer un patient partenaire (PP) dans une équipe de professionnels de santé, des réponses méthodologiques pratiques et des questions structurantes pouvant soutenir leur expérimentation. Résultats : Les résultats issus d’une recherche-action (R-A) menée au sein d’un centre de lutte contre le cancer permettent à la fois de fournir un cadre méthodologique de coconstruction et d’apporter des réponses aux questions soulevées par les acteurs au cours de cette expérimentation : comment l’équipe et le PP se sont-ils organisés pour mettre en œuvre la mission de pair-accompagnant ? Quelles évaluations du projet mettre en place ? Comment chacun trouve-t-il sa place dans le projet ? Et finalement, quelles sont les modalités opérationnelles, les limites et leviers de l’intégration du patient partenaire dans l’équipe ? Nous proposons dans la partie discussion un modèle de l’expérimentation issu de la R-A mettant en exergue les drivers principaux ainsi que les interventions qui les nourrissent. Conclusions : Enfin, nous partageons une série de questions structurantes issues du travail de coconstruction des acteurs, qui nous a permis d’établir notre plan d’action pour l’intégration d’une PP dans l’équipe de soins au CLCC de Rennes (35), et qui nous semble suffisamment généralisable pour être testée et utilisée par d’autres équipes et dans d’autres contextes.
Leavening capacity, physicochemical and textural properties of wheat dough enriched with non-commercial unripe banana flours
Authors: Matidza Mutshidzi , Kgatla Tsietsie Ephraim , Mashau Mpho Edward
Published: October 2023

Banana is a highly nutrient-dense, widely produced and consumed tropical fruit. Luvhele and mabonde non-commercial unripe banana cultivars were used to produce the flour and substituted the wheat flour at four levels (10%, 20%, 30% and 40%) for dough production. The water and oil holding capacity of the blended flour samples and the pH, titratable acidity, leavening capacity, proximate composition and texture of the dough were determined. Incorporation of Luvhele and Mabonde flour improved the blended flours' water and oil holding capacity. At 0 min and level 40%, the pH of the dough sample decreased from 5.79 (control) to 5.27 in both banana cultivars. The volume of the dough decreased from 195.00 mL (control) at 30 min to 128.33 mL (luvhele) and 125.00 mL (mabonde), respectively. The proximate composition of the blended dough increased in terms of ash, fiber, fat and carbohydrate. However, a decrease in protein and moisture contents at p < 0.05 was also observed. The hardness of the dough increased significantly with increased amounts of unripe banana flour substitutions. On the other hand, the control sample recorded a high cohesiveness (1.22). Doughs added with mabonde flour recorded high adhesion. The results of this work demonstrate that non-commercial unripe banana flour can be used as an alternative functional component for baked products with improved nutritional value.
Students’ Perception of Using ChatGPT in Counseling and Mental Health Education: The Benefits and Challenges
Authors: Ajlouni Aseel O. , Almahaireh Abdallah Salem , Whaba Fatima Abd-Alkareem
Published: October 2023

ChatGPT is an artificial intelligence (AI)-based chatbot that has expanded in popularity among users in several fields. It could transform education and support achieving sustainable development goals. Providing counseling and mental health services is a vital national goal for maintaining sustainable goals. As evidence of innovative technology’s ability to support sustainability in the digital era, no study has been found to investigate ChatGPT in counseling and mental health education based on students’ perceptions and experiences. Consequently, this study aimed to explore undergraduates’ perceptions in terms of the benefits and challenges of using ChatGPT in counseling and mental health education. The study adopted a descriptive quantitative approach using a purposive sample comprising 210 respondents who enrolled in the counseling and mental health program at the University of Jordan and experienced ChatGPT in their learning. The results reported that 81.9 percent of respondents perceived ChatGPT as a beneficial learning tool for counseling and mental health (M = 4.10); they perceived their ability to support most of the primary counseling skills and therapeutic conditions as the counseling dispositions and behaviors expected for reflection on meaning skills, empathic care, setting boundaries with colleagues, openness to feedback, congruence and genuineness, ability to record-keeping and task completion, and non-verbal skills. Furthermore, the findings reported that students experienced moderate challenges and concerns while utilizing ChatGPT (M = 3.21). The study’s findings suggest educators in counseling and mental health employ ChatGPT in the teaching and learning process. In addition, it proposes that decision-makers at the University of Jordan consider student concerns about ChatGPT.
Construction and Implementation of Curriculum Knowledge Bases by Integrating New Educational Resources
Authors: Zhang Xiaoqian
Published: October 2023

With the development of information technology (IT), the educational field has gradually entered a modernization stage. In this context, it is important to effectively integrate various educational resources to further improve teaching quality. However, existing methods of constructing curriculum knowledge bases face many challenges in several aspects, such as data fusion, knowledge reasoning, and so on. To address these issues, this study conducted in-depth research and practice on the construction of curriculum knowledge bases in the educational modernization field. The main content of this study includes the data fusion and knowledge reasoning of curriculum knowledge bases and the intelligent Q&A framework design of the bases in the educational modernization field. In the data fusion part, an entity alignment method based on semantic similarity was adopted, which effectively solved the problem of semantic relationship fusion between entities. In the knowledge reasoning part, the option-aware network based on attention mechanisms was used to significantly improve the accuracy and efficiency of reasoning. As part of the intelligent Q&A framework design, a sequence-to-sequence machine translation model was adopted, which intelligently queried the knowledge bases successfully and provided customized teaching content, thereby optimizing the learning process. This study provides effective theoretical and practical support for promoting educational modernization.
The cost of water in Brussels does not respect the “polluter pays” principle
Authors: May Xavier
Published: October 2023

L’ordonnance Cadre Eau impose le cout-vérité de l’eau conformément au principe du pollueur-payeur. En pratique, les consommateurs d’eau – domestiques et non domestiques – bruxellois sont les principaux contributeurs au financement de la lutte contre les inondations, de la collecte et de l’épuration des eaux présentes dans le réseau unitaire d’égouts bruxellois. Cependant, environ la moitié des eaux résiduaires sont des eaux de pluie et des eaux claires parasites qui ne sont pas liées à la consommation d’eau. Les consommateurs ne devraient donc pas être mis à contribution pour les couts qu’elles engendrent en vertu du principe du pollueur-payeur. Nous estimons que 20 % de la facture d’eau des consommateurs est indument à leur charge et examinons comment ces montants pourraient être financés autrement.
« This Woman’s Work » : de la comédie romantique aux déclinaisons dystopiques
Authors: Dumas Lucie
Published: October 2023

La chanson « This Woman’s Work », écrite et composée par Kate Bush pour le film américain She’s Having a Baby, de John Hughes, sorti en 1988, évoque l’angoisse d’un homme dans la salle d’attente d’une maternité. Intégrée par la suite à l’album The Sensual World, la chanson apparaît notamment dans la série télévisée The Handmaid’s Tale adaptée du roman de Margaret Atwood et au sein du spectacle d’anticipation féministe Le Parasite, donné le 15 avril 2022 à l’Université Jean Jaurès. Ces récits dystopiques semblent très éloignés de la comédie romantique pour laquelle la chanson a été écrite. En nous fondant sur une analyse des différentes scènes – cinématographiques et théâtrales – auxquelles le morceau a été associé, nous montrerons que de nouveaux récits peuvent émerger de ces mélanges a priori disharmonieux.
Not No Place, Jeppe on a Friday and representing Joburg: Excerpts from a conversation
Authors: Walsh Shannon , Lalloo Arya , Malcomess Bettina , Kreutzfeldt Dorothee
Published: October 2023

Shannon Walsh et Arya Lalloo ont coréalisé le film Jeppe on a Friday (2013), un documentaire sur la vie dans le quartier de Jeppestown à Johannesburg. Bettina Malcomess et Dorothee Kreutzfeldt ont coécrit un livre sur Johannesburg intitulé Not No Place (Jacana Media, 2013). Ce qui suit est une transcription éditée d’une conversation sur le processus de réalisation du documentaire et du livre, publiée à l’occasion des 10 ans de leur parution ; elle met en particulier l’accent sur la différence des approches dans la manière de représenter la ville de Johannesburg et les difficultés qu’il y a à aborder cette dernière.
An Interview with Debra Bricker Balken and Lynn Gumpert, curators of Americans in Paris: Artists Working in Postwar France, 1946-1962 (Grey Art Gallery, 2024)—Part One
Authors: Cox Lara
Published: October 2023

Projected to open in February 2024 at the Grey Art Gallery of NYU, Americans in Paris: Artists Working in Postwar France, 1946-1962 examines the work of approximately seventy artists who lived in Paris for a period during the two decades following World War II. The following is the first of a two-part interview with the show’s curators, Debra Bricker Balken and Lynn Gumpert. In this first part, the organizers discuss the relationship of Americans in Paris to other shows, their research process, and the critical choices and layout decisions they made during the conception phase of the exhibition. As this interview reveals, the curators aimed to challenge the assumption that all art of the period fell under the rubric of “Abstract Expressionism” (or the “New York School”). The exhibition and its accompanying three-hundred-page catalogue showcases instead the diversity of US art genres and artists emerging from Paris during the period.
Songlines
Authors: Singeot Laura
Published: October 2023

Compte-rendu de l’exposition Songlines au Musée du Quai Branly, du 03 avril 2023 au 02 juillet 2023
Regard sur la loi n° 2023/009 du 25 juillet 2023 portant charte de protection des enfants en ligne au Cameroun
Authors: Wairou Gaorang Wangkari
Published: October 2023

En se dotant de la loi n° 2023/009 du 25 juillet 2023 portant charte de protection des enfants en ligne au Cameroun, le Cameroun vient de réaliser une avancée significative dans la lutte contre la cybercriminalité contre les enfants. Cette loi spéciale instaure un ensemble de mesures salutaires qui visent tant à prévenir qu’à réprimer les infractions contre les enfants en ligne.
Montar um céu estrelado: possibilidades metodológicas com imagens na pesquisa em educação
Authors: Balthazar Gregory da Silva , Cardoso Livia de Rezende , Huerta Moreno Lydia
Published: October 2023

A presente escrita é um esforço de realçar possibilidades metodológicas frente ao trabalho infinito diante da imagem, uma vez que, como bem nos ensinou Foucault, existe uma relação incontornável de irredutibilidade da imagem à palavra, e desta àquela. Com efeito, e a partir das teorizações arquegenealógicas foucaultianas, objetivamos delinear alguns caminhos metodológicos para pensarmos em uma pedagogia ética do olhar diante da imagem. Para tanto, argumentamos sobre a potência metodológica de uma arqueologia do saber das imagens, isto é, um exercício genealógico de pensar a multiplicidade de sentidos sobre e com imagens na tessitura do conceito de montagem proposto por Georges Didi-Huberman: os modos como as imagens, enquanto entes estelares singulares, nos permitem produzir, quando colocadas lado a lado, como em uma espécie de novos desenhos constelares, possíveis aprendizagens de resistências, de zonas de respiro, de espaços de criação do pensamento. Seguindo suas pistas, a partir de sua análise do Atlas Mnemosyne do historiador da arte alemão Aby Warburg, entendemos a montagem como um movimento genealógico que procura enfatizar o trabalho infinito diante de uma imagem, um exercício que nos permita pensar diferentemente o que somos e o que podemos vir a ser. Nesse bailado cintilante, a montagem tenta apreender a dança sobrevivente e anacrônica que é a historicidade mesma do acontecimento que é a imagem – aparecimentos, destruição e renascimentos, ou melhor, uma arqueologia do saber da e sobre a imagem que impõe à ordem do saber uma dupla condição: o inesgotável da imagem – a exuberância de seu aparecimento, o modo como nos abre para além do já sabido – e o abismal da imagem – as dimensões da imagem que se fazem irredutíveis à provisoriedade do ato de olhar, um não-saber que é intransponível ao nosso olhar diante da sobrevivência que fazem as imagens pulsar como entes vivos.
Possible Increase of Production Through Magnetic Field and Inhibitor Association - Evaluation of Reduction Minimal Inhibitory Concentration - MIC in a Brazilian Pre-Salt Well
Authors: Aldeia W. , Del Bigio J. C. , Lourenço V. S. , Martins A. L. , Castro B. B. , Schluter H. E.
Published: October 2023

This article presents the results obtained in the evaluation of the joint action of the chemical inhibition (inhibitor) and the magnetic field, aiming to evaluate the possibility of reducing the minimal inhibitory concentration (MIC), seeking an increase in production in oil extraction wells, increasing the reliability of the guarantee of flow in deep water wells. The magnetic field has the potential to retard the scaling of inorganic salts in oil production/water treatment systems. An evaluation of the combination of magnetic field and inhibitor to retard carbonate scaling was carried out, based on the tube blocking test method (TBT). The evaluation was carried out in two brine solutions, with reduced concentrations from a brine solution representative of the Brazilian pre-salt. A reactor with an internal diameter of 0.045 cm and a total flow rate of 20 cm3/min was used. (Re ≈ 900), reactor inlet pressure of 10 kgf/cm2 and outlet pressure of 1 kgf/cm2. The temperature was 60 °C and the inhibitor used was hydroxymethyl amino-di(methylene phosphonic acid) type in different concentrations. The magnetic field used was 1.0 Tesla. The results indicate that the association of inhibitor and magnetic field under certain conditions can lead to significant delays in calcium carbonate fouling, proving to be an interesting strategy for mitigating calcium carbonate fouling.
Mero Field: Subsea Development Challenges
Authors: Buk L. , Pereira R. M. , Valença C. J. G .M. , de Melo R. T. , Gonçalves A. A. , da Silva W. A. , Reis B. P. , Bidart A. M. F. , Passarelli F. M. , Garmbis A. G. , Delescen J. H. W.
Published: October 2023

This paper will present the technological achievements in the subsea scope of the Mero field development, which was recognized with the Distinguished Achievement Award by OTC Brazil in 2019. Mero is the third largest Pre-Salt field, being the first one developed under a Production Sharing Contract that was awarded by Libra Consortium in 2013, where Petrobras (38,6%) is the operator in partnership with Shell Brasil (19,3%), Total (19,3%), CNOOC (9,65%) and CNPC (9,65%). The Consortium also has the participation of the Brazilian state-owned company Pré-Sal Petróleo - PPSA (3,5%). The paper will detail the subsea system development for the Mero field and how the Mero EPS (Early Production System) operation influenced the final configuration for all Mero Projects. This paper will also present the technical challenges that had to be overcome to successfully start the production through EPS and Mero 1 Projects. This includes various new solutions for Brazilian Pre-Salt and offshore industry. The Mero 1 development has proved to be a success with the achievement of the highest oil production flowrate per FPSO (250,8 kboepd)in Brazil in early 2023. Its subsea architecture has been considered and applied not only for the next Mero Projects, but also for future Petrobras Pre-Salt Projects. ln addition, the paper will introduce the new technologies that Petrobras and its Partners are developing together with suppliers, to overcome the future challenges of the field. This paper will contribute to the offshore industry by sharing the experiences and innovative technologies adopted in the subsea system for this complex Pre-Salt development.
Probabilistic Failure Occurrence Estimation Based on Survival Analysis Modeling: First Approach
Authors: Vianna I. G. P. , Valladares I. F. , Pacheco C. E. P. , Netto E. V. , Brito A. C. de A. , Costa F. R. , de Carvalho E. P. , Mendes D. H. , da Silva R. N. C.
Published: October 2023

Workover is a critical operation performed by drilling rigs, given the operational impact of resources involved in this activity. The yearly estimation of workover occurrences for drilling campaigns or mature fields is challenging for resource allocation, given the need to maintain the production of oil and gas fields. Based on these aspects, we established a group of business rules to identify failure historical with experts from a large Brazilian energy company. We presented an adapted survival analysis methodology to estimate failure occurrences.

We scheduled several meetings with workover experts from a large Brazilian company to establish the business rules required to identify failure historical occurrences. To estimate future failure occurrences, it was necessary to adapt a traditional survival analysis into a well's failure survival analysis methodology that considers all premises from the business rules. The failure survival analysis methodology generates a survival curve; however, it still needs to be fulfilled, considering the rarity of failure occurrences. The next step was fitting a continuous distribution into the survival curve to complete the information. The continuous distribution represents the shape of the survival curve; thus, we performed linear regression to adjust the continuous fitted distribution in real data.

We apply our methodologies to real well's data from two Brazilian fields. The failure identification methodology could identify most failures based on the business rules. We tested the failure estimation methodology and compared the total real failures with the total estimated failures. The failure methodology can be applied for failure estimation in new campaigns (using a similar field) or following years in mature fields (using the field's history itself). The results allow a future multivariate approach, introducing new features to multivariate survival analysis or a machine learning model. A multivariate failure model can generate more robust results, providing better estimation.

The first novelty is the group of business rules established by workover experts to identify failure historical. The documentation and standardization of these rules compose the base for future works focused on probabilistic estimations of failures and workovers, building the premises required by any survival analysis or machine learning model. The second novelty is the methodology developed to adapt a traditional survival analysis into a failure survive analysis.
A New Approach to Manage CO2 Hydrates During Geological Carbon Sequestration
Authors: Rocoulet S. , Lesage N. , Jellema R. , Tacnet J. , Drouilly C.
Published: October 2023

CO2 storage into reservoirs aims to reduce global Green House Gas emission. CO2 is injected into the reservoir in supercritical conditions and undergoes expansion when reaching the lower pressures of the depleted reservoir. During start-up, or restart, rapid CO2 expansion at the near wellbore region induces a significant temperature drop in the near wellbore. In presence of water, CO2 hydrate can form, precipitate, and degrade well injectivity. To prevent hydrate formation during start-up, or after a long shut-down, mitigation measures should be implemented.

Contrary to CH4 hydrates, there is a lack of CO2 hydrate formation in reservoir conditions in literature. This innovative study assessed the use of Kinetic Hydrate Inhibitor (KHI) to avoid CO2 hydrate formation during start-up sequences. The impact of fluid composition, process parameters and reservoir conditions on the possible implementation of the mitigation measure have been mapped to support the selection and use of an appropriate KHI.

This study proposes to assess the use of Kinetic Hydrate Inhibitor (KHI) and Thermodynamic Hydrate inhibitors (THI) to avoid CO2 hydrate formation during start-up sequences.

Laboratory tests were conducted by reproducing reservoir conditions inside an autoclave set-up. The impact of various parameters, such as water composition (salinity), mineralogy of the reservoir (especially the clay content), CO2 purity (H2S, CO, H2 and CH4 impurities) have been studied on KHI efficiency. Autoclaves tests were conducted to assess the performance of several KHI chemistries to delay CO2 hydrates formation. Adsorption tests were conducted to better understand interactions of KHI chemistries and reservoir mineralogy. Lab results point out the impact of the salinity on KHI performance and a correlation has been highlighted between KHI efficiency and KHI composition (polymer based vs. alcohol based). Results indicate that reservoir samples containing the highest clay content, lead to the lowest KHI efficiency when keeping a constant salinity level. Indeed, KHI efficiency drops when increasing clay content in the reservoir mineralogy and decreasing KHI concentration in water phase. Results suggest that the inhibitor chemicals are adsorbed by the clay and plays an important role in KHI efficiency.
BM-C-33 Project Large Diameter Pipeline Direct Tie-In PLEM in Ultra-Deep Water
Authors: Strandbakken T. , Nystrøm P. R. , Gilbu E. J. , Fosse A. , Valeriano I. A. , Fridriksdottir V.
Published: October 2023

The BM-C-33 field is located in Campos Basin 200 km offshore of the Rio de Janeiro state in Brasil. The field development will comprise an offshore development and an onshore development with a gas export pipeline connecting the two installations. The development concept includes subsea installations tied back to a Floating Production Storage and Offloading (FPSO) unit for crude storage and offloading to shuttle tankers. Gas will be exported to shore via Gas Export Pipeline (GEP).

The water depth at the field is nearly 3 000 m, making the field one of the deepest developments in the world. Pipeline tie-in architecture at such water depth is pushing the boundaries of current design codes, component design and installation vessel capacity. There is a need to ensure that the design limits the installation loads and ensures an installation friendly design. As a consequence, the BM-C-33 project has explored a design for a direct tie-in Pipeline End Manifold (PLEM) for the GEP system at the deep-water end.

This paper discusses the PLEM and tie-in architecture proposed for the connection of two 10.5″ ID Steel Catenary Risers (SCR) and the 22″ ND GEP in 2 735 m water depth. In addition, this paper discusses the background and processes leading to the selected concept.
Investigation on CO2 Solubility for Safer CO2 Storage: Experimental Study on the Effect of pH
Authors: Ali M. , Hamdi Z. , Elochukwu H. , Bataee M. , Musa S. A. , Hassan A. M. , Rostamian A.
Published: October 2023

The solubility of carbon dioxide (CO2) in water is an important parameter in various scientific fields, including environmental sciences, chemistry, and climate studies. This paper aims to investigate the effect of pH on the solubility of CO2 in water. It explores the underlying chemical processes involved in CO2 dissolution and examines the relationship between pH and CO2 solubility. Experimental data, theoretical models, and empirical relationships are presented to support the discussion. The findings highlight the significance of pH in understanding CO2 solubility and its implications in subsurface storage applications.
Subsea Environmental Monitoring, Hydrocarbon and CO2 Leak Detection Technologies
Authors: Smith Michael T. , Wie S. H.
Published: October 2023

Among Government Authorities, Subsea Production Operators, and the General Public, there is an increased awareness and concern about subsea hydrocarbons and carbon dioxide (CO2) leaks, and consequent pollution. Leaks from production and CO2 injection wells may have severe environmental consequences. Even if all subsea systems are designed not to leak, leaks have and will occur, in smaller and larger volumes. Any leak, small or big, should be detected and stopped to avoid environmental disasters following the As Low As Reasonably Practicable (ALARP) philosophy as described by Offshore Norway Guidelines 100 for Detection of Acute Pollution to the Sea.

Active acoustic sonar has been used for decades in the fishing industry, as a very effective and accurate technology to find fish and monitor marine life. Over the last decade this technology has been further developed to detect hydrocarbon and CO2 leaks from subsea oil and gas production systems.

This paper will strive to describe and demonstrate a recently qualified and field validated solution to overcome issues with traditional leak detection methodology, through a collaboration between operators and suppliers and validated through third party testing, both in controlled environments and in real life field installations.
Operational Applications and Legal Aspects of the Insertion of Artificial Intelligence and Machine Learning into the Brazilian Oil and Natural Gas Industry
Authors: Paciello R. , Alves M. A.
Published: October 2023

For many decades, the world has not faced a geopolitical scenario as unstable as the current one. From the Covid-19 pandemic to the conflict between Russia and Ukraine, the oil and gas sector has been through a real economic epic. This conjuncture presents a perfect backdrop for the introduction of strategic changes in the O&G sector. Now in the third decade of the 21st century, it is increasingly unlikely to dissociate the debate on strategic changes from the imminence of technological innovations; and, even more unlikely, to talk about innovations without making an effort to reflect on their developments and impacts. After all, what better force to combat instability than a stable technological horizon?

This article, in the meantime, aims to discuss some technical and legal aspects of the introduction of AI - Artificial Intelligence - and ML - Machine Learning - technologies in the oil and gas market. Despite the fact that the insertion of these technologies is still a novelty in the market, some of its repercussions are already perceptible, both from a strategic-structural point of view, i.e., relative to the impacts on the daily operations of the companies that make up the sector, and from the point of view of the business structure of these same companies.

Such advances are a wake-up call to monitor the means and conditions under which these technologies will be inserted into the domestic market. To capture these elements in a way that makes it possible to point out trends, it is worth the effort to observe how this insertion has occurred in the international market and, no less important, to analyze how the regulatory frameworks under development in Brazil and the world are prepared to receive these innovations.
Geopolymer for Low-Temperature Shallow Depth Cementing Applications
Authors: Agista M. N. , Gomado F. D. , Khalifeh M. , Saasen A. , Moreira P.
Published: October 2023

Shallow depth cementing is often faced with the challenges of low temperatures and weak formation strength. To handle this challenge, green alternative cementitious material, so-called geopolymer, is proposed as an alternative to Portland-based cement for this specific application. In this article, the potential of using low-density geopolymer, utilizing the water-extended approach, for low temperature shallow depth application is described. Despite its flexibility in operation and slurry design, water-extended slurry is often faced with challenges such as weaker strength, prolonged thickening time, excessive free fluid and increased risk of particle sedimentation. The objective is to reduce the particle size distribution of its precursors to increase its reactivity and performance in the water extended low-density geopolymer. Two granite-based geopolymer mix designs, a normal-density geopolymer design and a low-density design, are compared. Several tests assessing thickening time, rheology, and compressive strength are performed on both geopolymer materials. For the low-density slurry, higher liquid-to-solid ratio is used to extend the slurry. Different source of precursors with smaller particle size distribution are used as the approach to obtain stable low-density slurry for low temperature application. This approach modifies the rheology profile of the slurry and leads to a more rapid hardening, making it suitable for surface casing cementing applications. Prolonged thickening time issue is solved with the low-density geopolymer, allowing the slurry to have a shorter thickening time. Smaller particle size results in water adsorption capacity and increased reactivity of precursor. Moreover, the low-density geopolymer shows rapid strength development for a short period of observation of 7 days at low temperature. The result shows the potential of low-density geopolymer, utilizing a liquid extended approach, for low temperature surface casing cementing applications.
Subsurface Image Morphing Operator Using Deep Learning Techniques
Authors: Chen C. S. , Datta D. , Chandran A. , Gupta M. , Chen J. , Sidahmed M.
Published: October 2023

Velocity uncertainty is one of the major challenges for subsurface imaging in oil & gas exploration. A surrogate migration engine based on image morphing operation can significantly reduce migration costs and speed up subsurface velocity model building workflow. We develop a machine learning based approach to predict subsurface image change due to velocity perturbation. This fast image change estimator takes the three channel inputs: an initial velocity model, its migrated image, and a velocity perturbation. It outputs the new image due to the velocity change. It is implemented using deep neural networks with 3D Fourier neural operator. We verify this image morphing operator with both synthetic data and field data experiments. The goal of this study is in speeding up the velocity model scenario tests.
ROP Optimization and Improved Wellbore Quality with New BHA and Drill Bits Modeling in Soft Shallow Formations
Authors: Soares Matheus Morato , dos Passos Adriano Gouveia Lima Gomes , De Lima Flank Melo , De Souza Márcio Francisco Alves , de Souza Moreira Jorge , Martins Aléssio Flávio Vitoretti , Pioli Ricardo Magalhães , Spredemann Ricardo , Buzza Joseph Eduardo Harbi , Fernandes Fernando Bastos
Published: October 2023

The paper introduces a method that enables the drilling of a directional trajectory in shallow and unconsolidated formations of riserless phases through the adjustment of parameters, Rotary Steerable System (RSS) settings and PDC bits configurations. The technique was designed for some specific scenarios: exploratory projects in which maintaining verticality in shallow formations/hazards is mandatory, post-salt projects with significant inclination build in riserless phases, and projects that require kickoff in large diameters. There has been a substantial shift in drilling BHAs historically used in riserless drillings with KOP in shallow formations. The use of positive-displacement mud motors (PDM) combined with tricone bits was replaced by RSS and PDCs bits. To enable the change of BHA and the consequent optimization of performance, some parameters and drilling settings were adjusted, such as: an increase in TFA, flow rate reduction, HSI reduction, increase in the frequency of viscous pills, use of the Pump & Dump technic and readjustment of drilling parameters. The main optimization achieved by the adopted methodology is related to the increase in ROP and improvement in wellbore quality. The performance optimization with RSS and PDC bits was observed not only in the directional part of the trajectory, but also in the vertical section. Another relevant aspect of the method is that it enables drilling trajectories in challenging scenarios: riserless phases in large diameters, such as the "chaotic" ones in the Santos Basin post-salt; shallow or friable formations. These actions have allowed the installation of casings or completion tubings without excessive drag and/or bumps, due to the simplification of the directional design and improvement of wellbore quality. An increase of 39,3% in the average ROP in the worst case scenarios and 112,1% in the best ones were observed, as well as a reduction from 20% in caliper ratio washout to 12% (related to less formation washout due to the application of lower flow rates), an improvement in wellbore quality. In addition, the reduction in flowrare and drilling time allows the use of the Pump & Dump technique, which guarantees geomechanical stability at high inclinations, typical of ultraslender projects. The methodology has ensured risk mitigation (involuntary sidetracks, high drag during installation of completion equipment, improvement in cementation hydraulics, absence of overpull margin and reduced bottom drilling torque available), project scope optimization (reduction in the number of phases in pre-salt projects, ultraslender configuration in the post-salt Campos Basin) and increase in ROP and consequent reduction in well construction time.
Dynamic Analysis to Identify Mathieu Instability on Hanging Riser for Exploitation of Subsea Minerals
Authors: Yamamoto Marcio , Yamamoto Joji , Masanobu Sotaro
Published: October 2023

We investigated the occurrence of Mathieu Instability on a hanging riser under dynamic loads from irregular waves and platform motion. Mathieu Instability shall occur in risers by combining dynamic axial and radial loads with reduced axial tension, resulting in high amplitudes of bending moment and axial tension.

Our model is a 20" drilling riser in the hang-off configuration, including the 6-5/8" Choke/Kill lines. The simulation was repeated for 1,500 m and 4,000 m of water depths, typical depths for polymetallic crusts and nodules, respectively. Besides, we removed the subsea slurry pump to increase the risk of the Mathieu Instability occurrence. However, the Mathieu Instability did not occur in all cases because the numerical results of the axial tension and bending moment amplitudes were reduced. We hypothesize that the drilling riser has enough bending stiffness to mitigate the Mathieu Instability. Besides, the top portion of the 4,000 m riser was tensioned beyond the material's yield strength due to effective tension. Therefore, we expect a structural failure in this case.
Driving Change in the Oil and Gas Industry: A Digital Transformation Framework
Authors: Trindade D. N. , Duarte L. G. , Perico I. , Bandeira G. L.
Published: October 2023

The swift advancement of technology has forced key industrial sectors to expedite their digital transformation processes. Despite the escalating organizational interest in investing in technological advancements, the Oil and Gas (O&G) industry lags in the digitalization race. This research aims to introduce a conceptual framework for businesses to succeed in digital transformation and maintain competitive operations through digitalization.

The Digital Transformation Framework was applied in an O&G company based in Brazil, focused on the Subsea segment, and is built upon three key pillars. First, defining the digital's identity for the company, the materialization in a long-term strategy, and leadership sponsorship. Second, establishing partnerships with IT and Finance departments, and suppliers, the project management and execution engine layer is a channel to collect ideas, workflow for implementation, and follow-up meetings. The third pillar is related to people, which embraces a strong communication plan, the volunteer work of digital agents, the empowerment of employees as developers, and an upskilling program to increase competencies.

The implementation of the framework has successfully increased the digital maturity of the organization and facilitated a sustainable cultural transformation. The framework enabled the generation of improvement ideas, led the automation of critical processes, and enhanced data management. Also, empowered employees to deliver developments independently, and these individuals have been designated as citizen developers.

Moreover, the Digital Agents' role promoted a vital contribution to cultural formation. Their influence and support in major areas have elevated the digital culture, promoting the team's involvement and delivering projects autonomously. Likewise, a training program based on digital awareness following an upskilling plan and linked to business strategy allowed the implementation of new technologies in daily operations. Also, incentive mechanisms were established based on financial recognition, increasing employee visibility to those aligned with the corporate strategy and promoting cultural development. Finally, the partnership with technical developers and suppliers was strengthened, including academia for specialized and high-technological projects.

The Digital Transformation Framework fosters innovation and provides a practical digitalization approach that tailors its applicability to an O&G industry, defining processes, responsibilities, and stakeholders’ collaboration. This case study presents valuable insights regarding feasible implications for companies that embarked on their digital transformation journey and those seeking to navigate the digital landscape.
Carbon Capture and Storage in Brazil and Systematic Review of Criteria for Prospecting Potential Areas
Authors: Lourenço M. C. M , Perez Y. A. R. , Rodrigues T. C. , Rodrigues M. A. F. , Antunes A. F. , Filho L. S. , Montalvão L. C. , Eiras J. F. , Lima C. , Medeiros G. C. , Jacinto M. V. G. , Sátiro L. S. P.
Published: October 2023

This work aims to present the current scenario of Carbon Capture and Storage (CCS) in Brazil and fundamental criteria for prospecting potential areas. It reviews and applies the existing scientific literature used worldwide for CCS projects. By integrating information, we expect to provide comprehensive insights into CCS in Brazil and outline methods and criteria for screening and select areas in Brazilian sedimentary basins.

This work is based on applied research methodologies. A survey was conducted to examine the current Brazilian context, including the potential sectors for CCS in the country and ongoing developments. Additionally, several previous works on projects worldwide were reviewed to formulate criteria for assessing the prospectivity of CO2 storage areas, which can be applied at scale. By combining Brazil's current status and CCS methodological references, we integrated information to propose an applicable site screening and selection criteria for Brazil. Furthermore, we elucidated some of the potential and challenges that the country faces.

In Brazil, energy and industry are the principal sectors for decarbonization with CCS, including the oil and gas sector, bioenergy, thermal power plants, refineries, and steel, cement and chemical industries. Ongoing research is focused on specific storage sites and other CCS technologies. Currently, Brazil's CO2-EOR in the Pre-salt fields is globally recognized. Research is also being conducted on saline aquifers in the Paraná Basin to use CCS with bioenergy (BECCS). Additionally, there is a pilot project under development in the Parecis Basin. Despite these advancements, there have been no few approaches concerning methodologies and criteria for prospecting areas for permanent storage in Brazil. In this study, we propose a methodology for selecting and developing qualified CCS sites, which involves regional analysis, site screening, site selection, and site characterization. Considering Brazil's early stages in CCS implementation, we have provided a list of screening and selection criteria applicable to the country. The expertise and legacy of the oil and gas industry play a crucial role in advancing CCS in Brazil, alongside the intensified national potential through BECCS. In order to progress, the country needs to address necessities such as data availability, policies, the carbon market, and regulations.

This work presents an innovative element to organize and structure key elements to allow a national scale analysis to explore future opportunities for CCS in Brazil. Due to the absence of previous national studies, an unprecedented overview of applicable criteria was provided to prospect potential regions for CCS projects in the country.
Fatigue Analysis of Drill String Using Goodman and Sooderberg SN Curves
Authors: Valença J. P. V , Binas F. A. V. , Ferreira D. V. , Lima E. T. , Barboza A. S. , Riente A. F.
Published: October 2023

Most drill pipe failures are caused by metal fatigue because of repeated or fluctuating stress. The cumulative damage rule and S-N curves are used in a tool to calculate the amount of fatigue life consumed in drill strings. Comparisons are performed between the stress methodologies proposed by Goodman and Soderberg. For the study, a stiff string torque and drag model is used to calculate stress such as axial force, torque, bending moment, and strains. S-N curves are applied to determine the number of alternating stress cycles needed to cause fatigue failure. The Miner’s Rule is used to calculate the cumulative damage, which results in the percentage of life spent during the drilling operations. A fatigue study of a vertical tortuous well, reaching a depth of 3115 meters is carried out. Three BHAs were used to model the drilling process, performing various operations including drilling, rotation-off-bottom, and backreaming operations. The overall fatigue life consumption in a drill collar connection was computed taking into account its reuse in all BHAs. The profiles of stress and fatigue are provided to help in the analysis of the issue. Comparing Goodman’s and Soderberg’s average stress rule models yielded the overall conclusion that the differences between them are very small for the case studied, Goodman’s responses being greater than Soderberg’s. The integration of the model into a torque and drag quantification tool allows analyses to be performed using both average stress techniques, allowing the drill string to be sized in a way that prevents excessive fatigue life consumption.
Effect of Deep Eutectic Solvents on Water-Based Mud Properties
Authors: Karki N. , Hamdi Z. , Sipi A. , Bataee M. , Rostamian A.
Published: October 2023

The paper explores the potential of Choline Chloride-based deep eutectic solvents (DES) to enhance the performance of drilling fluids. While Choline Chloride-based DES can have positive effects such as reducing fluid loss and improving fluid viscosity, it can also pose significant risks to human health and the environment and negatively impact fluid rheology and filtration properties. Therefore, it is important to carefully consider the potential effects of Choline Chloride-based DES on drilling fluid performance before incorporating it into drilling operations. The paper provides a thorough literature analysis and gives insight into the present level of knowledge on Choline Chloride-based DES and its impact on drilling fluid performance. The CG13 DES provides the best results among all the Choline Chloride-based DES used. Despite DES economic concerns, the experimental works show that they are potentially good candidates as water-based mud additives.
Process Safety Management in Oil and Gas Operating Units Through Digital Twin Platform: A Digital Approach for Safety Control and Process Intervention
Authors: Correa Otavio Carneiro , Mariano Jorge Seleme , Amaro Eduardo Pelanda , Santos Eduardo do Nascimento
Published: October 2023

Operational safety holds significant importance in the oil and gas industry, given the complex and high-risk nature of its operations. Considering this complex challenge, this paper describes the development of an application through a cloud-based platform that integrates the operation and maintenance phases of industrial plants through a Digital Twin for the management of risk in Oil and Gas operating units. The platform integrates project data as well as process documentation on the digital twin database, providing a systematic overview of risk analysis, safety control, and management of the operating units.

By creating an integrated database, operators can access information, models, and processes, and perform simulations through web access and mobile. For the Process Safety application on an FPSO (Floating Production Storage & Offloading), information from risk analyses was extracted through OCR, Regular Expressions, and then contextualized and linked to the 3D model. To implement the solution, it was created an integrated system based on protocols for consuming and updating data, documents, and models involved. This includes a middleware for 3D engineering models and a document integrator for risk analysis processes, along with a dynamic visual representation of the sequencing of actions when process intervention is required.

The solution presented in this paper offers valuable recommendations and evidence to support interventions and audits. Furthermore, it centralizes access to engineering information, significantly reducing industry professionals’ time spent searching and validating data across different operating systems, leading to a reduction of up to 75%. The system also generates simulated dynamic visual representation in the digital environment to showcase the sequencing of actions required during interventions in the process. This approach has led to an expected improvement in the recordable incident rate and a significant reduction in the time required to plan shutdowns and turnarounds. Overall, the platform's efficacy is demonstrated through its ability to streamline processes and enhance safety protocols.
Maintaining the Integrity of Wellhead Components Using a Polymeric Compound
Authors: Alramadan F. B. , Aljuryyed N. W. , Alissa F. M. , AlJuaydi H. S.
Published: October 2023

This study presents an innovative approach to prevent wellhead equipment corrosion in the cellar by employing a composite gel of polyacrylamide (PAM) with sand to enhance mechanical strength. Experiments were conducted to investigate the effect of varying PAM-to-sand ratios on the composite gel's mechanical and corrosion inhibition capabilities. The mechanical properties, including stress and strain, were examined using a rheometer. The corrosion inhibition capability was evaluated using corrosion test coupons. The results showed a notable improvement in mechanical strength and corrosion resistance with the inclusion of PAM and sand. Among the tested ratios, a composite gel consisting of 10% PAM offered the optimal balance of mechanical strength and corrosion inhibition. This finding suggests that filling the cellar with a 10% PAM composite gel can significantly enhance the lifespan of wellhead equipment by effectively protecting it from corrosive agents. Further research will focus on optimizing the composite gel for improved performance and assessing long-term durability under real field conditions.