bluuebunny/crossref_metadata_2025_split huggingface dataset:
Transformation Strategy on Splitter Well Application to Encounter Collision Risk
Authors: Andhika Lutfi , Iriyanto Rizky , Kartaatmadja Himawan , Hendarno Boby Wijaya , Hutahaean Ray Henry Jimmy 
Published: February 2025

Abstract
Conductor pipe partition system (CPPS) is a method that allow drilling more than one well from one conductor pipe (CP). Separation device consist of plate conveyed with tubing is run inside CP to segregate the wells and as a circulatory system. This technique could bring noteworthy advantages for the development of oil and gas field by decreasing the size and/or number of platforms and also to offer additional reserves access from current platform. Enormous cost saving by applying CPPS can be obtained up to 32 MUSD from the platform design and well construction.
Offshore Mahakam has been utilized CPPS since 2003 by more than 100 wells was built with this technique. Misalignment, twisted CPPS, cement ring, and collision risk are common problem during the construction. Practically with inclined and directional CP driven, the 1st well will be drilled below CP with tangent section around 2-3 stands and continue to shift direction as per target zone. Meanwhile for the 2nd well will directly kick-off below CP shoe and immediate keep at the distance to the 1st well drilled. By design, distance between well along inside CP are nearly close around 0.23 m which by default already below anti-collision standard. Failed troubleshoot might result on well integrity issue to loss of new slot.
Two cases casing integrity issue due to collision on splitter well was occurred while perform drilling splitter well in Offshore Mahakam. The first one on Sisi-Nubi field while drilling 2nd well surface section observed mud return from 1st well lateral valve outlet. The second integrity issue was happened on Bekapai field while 2 wells already completed drilling and set surface casing. During RIH BHA and perform choke drill inside surface casing on the 1st well, it is found unable to hold pressure and no mud return observed. Based on both of cases, reviving on casing integrity was performed by drilling rat hole and run smaller casing size that causes loss time and additional material equivalent to 1.4 MUSD.
Hence, proposed modification to make robust design and procedure is deployed to prevent those undesirable events appear in the future, such as: update on running BHA and kick-off procedure, bit design with shield, utilization of casing saddle, cementing strategy, and re-design CPPS supporting equipment. By those modifications, CPPS can still be one of the best options to optimize number of slot and well that can be drilled from the platform without compromise integrity and performance.
Modelling CO2 Injection in Shallow Context: The Case of Otway Shallow Fault Project
Authors: Maffeis I. , Messori A. , Petho G. , Rieger M. , Nourollah H. 
Published: February 2025

Abstract
The present publication aims to illustrate key aspects of the modelling work underlying the operational design of the Otway Shallow Fault research project. The objective of this project is to provide a field demonstration of the interaction between CO2 and faults in the subsurface through the injection of a limited volume of CO2 in the Port Campbell Limestone aquifer at the Otway International Test Centre (Victoria, Australia).
An extensive subsurface study was conducted for targeting the operational design of the project, facing the challenging conditions posed by the shallow depth of the injection formation (about 70-80 m). The experimental observations available for deeper layers were the basis for the development of a Mechanical Earth Model (MEM), which was extended to shallower layers for the evaluation of the optimal injection pressure.
From a fluid dynamic side, the phase behavior is impacted by the specific formation pressure and temperature conditions. The solubility model involved in the numerical simulations needed specific calibration starting from literature data for the forecast of plume shaping in the formation.
The MEM approach offers valuable insights on the geomechanical behavior of the involved formations: the resulting stress regime transition from reverse to normal with depth aligns with regional geological observations, validating the findings. Uncertainty arises in the application of assumptions from deep sedimentary rocks to near-surface carbonates. While the model results suggest vertical stress as the threshold for safe injection, conservative recommendations favor data from extended leak-off tests performed in near offset wells, showing a gradient of 14.77 MPa/km.
On the other hand, the quantitative evaluation of the CO2 dissolution in the formation brine showed that the solubility trapping is the main drive for CO2 storage in such a shallow context. Its effect on the dynamic forecast of the size and shaping of the CO2 gaseous plume is noticeable, having also impact on the operative constraints of the field experiment and allowing to estimate the optimal volume of CO2 to be injected for the observation of its interaction with the fault.
Various uncertainties, mainly due to the limited availability of experimental data, were addressed by the studies presented. The results obtained allowed the construction of a dedicated numerical model for the accurate forecast of the CO2 behaviour in the subsurface.
The presented characterizations supported the operative phase of the project in a challenging context, mainly impacted by the shallow depth. Advanced monitoring techniques were designed and put in place for the field observation of the effects of CO2 injection. The analysis of the field data will allow to refine the calibration of the model inputs, while gaining the knowledge to be transferred on CCS projects at commercial scale.
Well Integrity: Similarities and Differences Between Dynamic Influx Management and Riser Gas Handling in Managed Pressure Drilling Applications
Authors: Ben-Fayed M. I. , Luis R. A. Gonzalez 
Published: February 2025

Abstract
The first common usage of MPD was as an Early Kick Detection System (EKDS). The next evolution of this implementation was to develop an Influx Management Envelope (IME) for Dynamic Influx Management (DIM), which focuses on mitigating, controlling, and circulating influxes during drilling operations within the primary barrier, emphasizing the dynamic nature of the wellbore conditions. In contrast, Riser Gas Handling primarily deals with gas influxes outside the constant bottomhole constraint. In 2023, an IADC committee issued guidance on Riser Gas Handling for deepwater wells that have Surface Backpressure (SBP) MPD systems. This adds another layer of consideration when dealing with influxes while drilling with MPD, which allows for the management of rising pressure and control of gas expansion in a safe and controlled manner. The analysis reveals similarities and differences between DIM and RGH methodologies. DIM dynamically manages influxes within the primary barrier, while RGH deals with gas influxes outside the primary barrier, especially in deepwater wells with Surface Backpressure (SBP) MPD systems.
Even with MPD operations evolving to include IME, the industry outlook, unfortunately, was to be viewed as a supplemental or bolt-on upgrade. In conventional drilling, the first line against the ability of the well to flow to the environment is a visible mud column whose combined pressure is greater than the formation's in situ pressure. The redundancy in the barrier is provided by the Blowout Preventer (BOP) stack, a crucial safety measure that acts as a secondary line of defense. This recognition should show how MPD is an integral part of well planning and shouldn't be seen as an upgrade or bolt-on feature. As an integrated part of well planning, well integrity analysis is necessary.
This paper will guide you through the analysis by highlighting the objectives of handling gas in the riser and circulating an influx out with an Influx Management Envelope. With the objectives described the data necessary to accomplish said objectives becomes easier to determine. Then, the barriers during an IME and the barriers in an RGH will have to be ascertained. Identifying the barriers and preservation thereof will make the process for RGH and IME easier to understand. With those two concepts clarified, the methodologies, equipment requirements, and operational challenges become easier to discuss. Analytical methods will be applied to compare the two methodologies, considering their respective effectiveness in managing well integrity.
Drilling Performance Improvement and Cost Reduction with 3D Geomechanical Modelling for Wellbore Stability Analysis
Authors: Chen Chao , Wu Qingxiang , Xie Dan , Ding Zhenhua , Zhen Yangming , Zhou Wei , Hua Xiaoqing , Liu Zhenping , Huang Xingning , Wu Zangyuan 
Published: February 2025

Abstract
The low permeability reservoir has the characteristics of large buried depth, high temperature, large lithologic change and high stress field, which leads to the inaccurate drilling mud density window based on the conventional wellbore stability analysis, resulting infrequent instability of the wellbore during the drilling process, and brings hidden dangers to drilling safety and environmental protection. By considering the influence of temperature effect on the borehole stress and adding the weak surface (fracture) instability condition based on Mohr-Coulomb destruction criterion, we proposed a method to determine the safe slurry density window of ultra-deep reservoir drilling according to six parameters: the minimum slurry density for shear instability and the maximum slurry density for tension instability in rock and weak surface, and the equivalent slurry density of pore pressure and minimum horizontal main stress. The application results of real data show that this method has good applicability and accuracy for the prediction of collapse pressure and leakage pressure in the ultra-deep complex formation in Baqu block of Karamay depression, and can provide effective reference for the actual borehole drilling design.
Asia's First Successful Application: Slim Battery Tractor Conveyor System via Slickline for Memory Contact Logging Operation
Authors: Utta Arie Muchalis , Skiftun Tor Oskar , Narasingam Thanithrahvathy , Ho Yap Yin , Maluan Lilihani , Lidwin Sharon Ellen 
Published: February 2025

Abstract
Well X at Field Y, Offshore Sarawak Malaysia is a highly deviated well at 75 degree. Contact Logging was planned on the well -whereby the data result will be crucial for the next Infill Drilling project sanctioning, to de-risk the new well placement nearby well X and for reservoir modelling on the Gas Oil Contact (GOC) movement. Well X is located at a small jacket platform which required thorough well intervention assessment and deployment strategy to meet the project objective. This paper aims to share experience of one of the operators in offshore Sarawak, Malaysia who successfully conducted a Memory Contact Logging operation using a Memory Tractor System deployed on slickline in a highly deviated well. The paper will highlight the following: Project Requirement for Slickline Memory Tractor over E Line TractorOperational Challenges & LimitationWell Preparation and Well Conveyor (WECO) Tractor activation process
Congenital malaria: Prevalence, clinical presentation, and clinical outcome
Authors: Abolodje Efe , Jiya Nma Mohammed , Onankpa Ben , Audu Isah Lamidi 
Published: February 2025

Objectives
The objective of the present study was to determine the prevalence, clinical manifestations, and clinical outcome of congenital malaria at the study center.

Material and Methods
Consecutive neonate seen between February 1st and July 28th, 2014, were recruited for the study at the time of delivery. Blood specimens were obtained from neonates for Giemsa stain and microscopy for malaria parasite. Neonates with malaria parasitemia were observed for 48 h for development of symptoms, and when present, they were treated.

Results
Four hundred neonates were studied, 162 (40.5%) had congenital malaria out of which 40 (24.7%) developed symptoms. Fever and jaundice were the most common symptoms, and all symptomatic neonates responded to treatment with artemether-lumefantrine.

Conclusion
The prevalence of congenital malaria in the present study was high; however, symptoms were uncommon, and when present mimicked those of neonatal sepsis.
ТЕОРЕТИКО-МЕТОДИЧЕСКИЕ АСПЕКТЫ ИССЛЕДОВАНИЯ ВЗАИМОСВЯЗИ ЭКОНОМИЧЕСКОЙ КУЛЬТУРЫ И ЭКОНОМИЧЕСКОГО МЫШЛЕНИЯ
Authors: Фурин А.Г. , Манукянц С.В. 
Published: February 2025

Исследование теоретико-методических аспектов экономической культуры и экономического мышления является актуальной задачей в условиях формирования «экономически грамотного» населения. В статье предложена методика исследования взаимосвязи экономической культуры и экономического мышления. Традиционные методы экономической науки, междисциплинарный синтез и институциональный подход дали возможность комплексно рассмотреть данные понятия, а качественный анализ теорий и нормативно-правовых документов позволил определить направление институциональных изменений со стороны государства. Сделан вывод о том, что экономическое мышление является базисом формирования идеологии института экономической культуры.
Introduction. The rapid development of the service industry, including the financial services sector, increases the requirements for the level of relevant competencies. This, in turn, necessitates the study of such categories as “economic thinking” and “economic culture”, as well as an assessment of the relationship between them. The research objective is to identify and systematize the foundations of the institution of economic culture, which determines the nature of economic thinking and the practice of making rational decisions. The research methods include analysis of materials from relevant domestic and foreign scientific publications, Russian regulations and subsequent synthesis of the foundations of the institution of economic culture. Results. The results of the study allow us to note the mutual influence and connection between economic culture and economic thinking in the conditions of a formed and functioning socio-economic system. The theory and methodology for studying the dependence of economic culture and economic thinking involves the integration of methods of economic science, interdisciplinary synthesis, and institutional approach. At the same time, the significance and the role of targeted institutional changes are beyond doubt since the modernization of the process of improving the quality of economic education and financial literacy of the population has become a priority area of government activity. Economic thinking has become not just a characteristic of an individual, including both conscious and unconscious; it is the mind, the intellect, psychological and social characteristics, a “way of life” in general, aimed at both analyzing and perceiving the information obtained in the process of thinking or feeling, and at the formation of a culture of behavior in the economy. Conclusion. An interdisciplinary approach encompassing methods of both economics and related social sciences and humanities, makes it possible to identify the role of economic thinking as the basis for the formation of the ideology of the institution of economic culture.
МОДЕЛЬ ФОРМИРОВАНИЯ УНИВЕРСАЛЬНОЙ КОМПЕТЕНЦИИ В ОБЛАСТИ ЭКОНОМИЧЕСКОЙ КУЛЬТУРЫ И ФИНАНСОВОЙ ГРАМОТНОСТИ
Authors: Плотникова Л.А. , Нагуманова Р.В. 
Published: February 2025

В данной статье раскрываются понятия экономической культуры и финансовой грамотности, исследуется влияние национального образования на экономическое поведение граждан России, на их уровень знаний в области экономики и финансов, исследуются требования национальных образовательных стандартов в части формирования универсальных компетенций и результатов обучения, обосновывается важная роль высшего учебного заведения в повышении экономической культуры и развитии финансовой грамотности населения, исследуются проблемные аспекты системы образования и формирования образовательных программ, предлагается модель формирования универсальной компетенции в области экономической культуры и финансовой грамотности, выявляются возможные риски при внедрении данной модели, предлагаются пути решения выявленных проблем и мероприятия по повышению экономической культуры и финансового образования граждан через систему образования.
Introduction. In order to understand the essence of economic phenomena and be able to assess (analyze) particular economic situations correctly, it is necessary to develop economic thinking, which can be achieved by getting economics education and universal competencies in the field of economic culture, including financial literacy. The aim of the study is to explore the core concepts of economic culture, including financial literacy, as well as to develop an algorithm for mastering the universal competence to ensure competent and conscious economic behavior of Russian citizens, increasing their knowledge in the area of economics and finance. Results. The study revealed a relationship between the learning outcomes and the disciplines (practices) that facilitate the formation of students’ competence in the field of economic culture, including financial literacy, in accordance with the proposed model. A matrix was developed to ensure the achievement of all learning outcomes envisaged by the UC-10 competency in compliance with the proposed model. The main advantages of the model of forming the universal competence of students were structured and clearly demonstrated. To minimize risks and avoid losses of various types, a roadmap was developed for the transition to the proposed model of the universal competence formation in the field of economic culture, including financial literacy. Conclusion. The key aspects of financial literacy include knowledge of how to make a budget, plan for retirement, manage debt, and track personal expenses. Economically and financially savvy people with critical thinking skills and еру ability to compare and evaluate risks associated with certain financial products offered by financial institutions are developing competition. Economics education plays an essential role as an element of the system of formation of people’s economic culture and financial literacy.
Research Progress on Village Eco-Industry and Rural Industrial Revitalization and Its Inspiration for the Karst Desertification Control
Authors: Yu Nana , Xiong Kangning , Zhao Rong , Feng Fangli 
Published: February 2025

Under the strategy of rural revitalization, it is urgent to apply the concept of ecological civilization to the development of rural industries. The study of ecological industry and industrial revitalization of karst village ecosystems can help to promote the revitalization of villages in ecologically fragile areas. However, the current status and progress of research on eco-industry and industrial revitalization of village ecosystems in ecologically fragile zones are unclear, and there is an insufficient summary of research results and problems. Therefore, based on 319 related literature, this paper focuses on the current status and progress of research on ecological industries and rural industrial revitalization in village ecosystems and reveals the current research results and shortcomings of ecological industrial revitalization in village ecosystems. We found that (1)village ecological industry and rural industry revitalization are becoming a hot topic; (2)Existing studies mainly focus on index system, driving factors, mechanism research and strategy research. (3) Research regions are mainly concentrated in Asia, North America and Africa. However, the main scientific and technological research such as the construction of indicator systems and the study of driving mechanisms are lagging behind. While summarizing the general rules, it also provides targeted insights and enlightenment for the sustainable management of karst desertification control ecosystem and the revitalization of rural industry.
Interaksi Dai dan Mad’u dalam Pengajian Arisan Qolbu di Kabupaten Agam
Authors: Raihan Putri Fadila , Berliana Ilham  , Lasri Muharami  
Published: February 2025

Artikel ini mengkaji hubungan antara dai dan mad’u dalam kegiatan pengajian Unit Pembinaan Anggota Arisan Qolbu di Jorong Bangkaweh, Kabupaten Agam. Penelitian ini berfokus pada penerapan berbagai model komunikasi dakwah, seperti Model Pertukaran Sosial, Model Peranan, dan Model Permainan, serta faktor-faktor yang memengaruhi interaksi dai dengan mad’u. Dengan pendekatan kualitatif, data diperoleh melalui observasi, wawancara, dan dokumentasi, kemudian dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa efektivitas dakwah sangat dipengaruhi oleh pendekatan personal, keteladanan, dan fleksibilitas peran dai dalam berinteraksi dengan mad’u. Mad’u lebih menerima dakwah ketika merasakan manfaat yang lebih besar dibandingkan pengorbanan mereka, sebagaimana dijelaskan dalam Model Pertukaran Sosial. Selain itu, keteladanan dai dalam kehidupan sehari-hari dan kemampuan memainkan peran sesuai kebutuhan situasi turut memperkuat hubungan dakwah. Hambatan seperti perbedaan latar belakang sosial dan ekonomi, serta keterbatasan waktu mad’u, menjadi tantangan yang harus diatasi oleh dai untuk meningkatkan efektivitas dakwah. Penelitian ini memberikan wawasan penting tentang dinamika hubungan dai dan mad’u, serta menawarkan kontribusi praktis bagi lembaga keagamaan dalam mengembangkan strategi dakwah yang lebih efektif dan relevan dengan kebutuhan masyarakat.

This study analyzes the relationship between preachers and mad’u in the recitation activities of the Arisan Qolbu Member Development Unit in Jorong Bangkaweh, Agam Regency. The research focuses on the application of communication models, including the Social Exchange Model, Role Model, and Game Model, as well as the factors influencing interactions between preachers and mad’u. Using a qualitative approach, data were collected through observation, interviews, and documentation, and then analyzed descriptively. The findings indicate that the effectiveness of da'wah is influenced by personal engagement, exemplary behavior, and the preacher’s adaptability in responding to the needs of mad’u. The Social Exchange Model highlights that mad’u are more receptive to da'wah when they perceive the benefits to outweigh the associated sacrifices. Furthermore, the preacher’s conduct in daily life and ability to adjust roles based on situational demands strengthen the da'wah relationship. Challenges include social and economic disparities between preachers and mad’u, as well as the limited availability of mad’u for engagement. Addressing these barriers is essential to improving the effectiveness of da'wah. This study provides valuable insights into preacher-mad’u dynamics and offers practical recommendations for developing da'wah strategies that align with contemporary societal needs.