bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Optimized Equation of State Thermodynamic Model for Hydrocarbon Volumetric Calculations Based on Wide-Range Experimental Data
Authors: Shaaban O. M. , Ali M. , Alomair O. 
Published: February 2024

Abstract
Compositional modeling using equations of state is the standard thermodynamic modeling approach in the oil and gas industry. Despite its robustness, this approach yields non-unique solutions due to its dependence on the selection of heptane-plus characterization models, binary interaction sets, and volume shift schemes. This study investigates this dependence and optimizes the performance of equation of state models in predicting the volumetric properties of hydrocarbon mixtures based on it. The performances of the Peng-Robinson (1978) and the Soave-Redlich-Kwong (1971) equations of state were compared in a comprehensive study. Different combinations of published heptane-plus characterization models, binary interaction sets, and volume shift schemes were also compared. The investigated heptane-plus characterization models included 4 boiling point, 10 critical pressure, 11 critical temperature, and 4 acentric factor correlations. Five binary interaction sets were applied in addition to 5 volume shift schemes. 88,000 thermodynamic models were tested against multistage separation data for 71 hydrocarbon mixtures of crude oil and gas condensate samples. The performance of the models in predicting gas-oil ratio and liquid density was evaluated, and the influence of each model component was quantified through sensitivity analysis. Results show that the choice of the equation of state model, heptane-plus characterization models, binary interaction set, and volume shift scheme can significantly vary volumetric predictions. Based on the selected thermodynamic model, the average absolute percent error ranged from 1.5% to 33.5% for liquid density and 5.7% to 36.8% for gas-oil ratio. The sensitivity analysis revealed that the selection of the volume shift scheme, the equation of state model, and the heptane-plus critical pressure model is the most influential on volumetric predictions. The best-performing models were reported, 62% of which used the Peng-Robinson (1978) equation of state. In contrast, 82% of the worst-performing models used the Soave-Redlich-Kwong (1971) equations of state. This demonstrates that the Peng-Robinson (1978) equation outperforms the Soave-Redlich-Kwong (1971) equation in predicting the volumetric properties of hydrocarbons. The comprehensive comparative study provides great insight into the influence of different model components on volumetric predictions for hydrocarbon mixtures. Moreover, the recommended thermodynamic models provide an accurate predictive tool for hydrocarbon mixture volumetric properties that does not need prior tuning to experimental data.
Research and Practice of Smart Laying Exploiting Technology in Tight Oil Development
Authors: Zuqing He , Yuxi He , Yulin Tu 
Published: February 2024

Abstract
To deal with low production, low liquid and low efficiency which occur after large-scale horizontal well fracturing has been carried out to develop tight oil reservoirs in Southern Ordos Basin, and to further determine oil reservoir performance and improve the development, a number of feasible solutions and production recovery measures were determined and implemented by evaluating the potential of underperforming wells. Based on the principle of remote intelligent control, a high-performance downhole intelligent switch was developed. A smart layering exploiting technology with a low cost and a simple operation procedure was developed by applying intelligent microelectronic technology to production strings based on mechatronics, by means of astring mechanics effect calculation method used for multiple-packer combination, the deformation of smart layering exploiting string and the load in the process of water packing were calculated to avoid movement and failure of packers. This technique was tested at 5 wells. It was shown that this smart layering exploiting technology could acquire production data effectively, decrease water cut and increase production rate. Therefore, it was advantageous due to its low construction cost and a convenient layer control. Further, it may be an effective technique of water production control and oil production stabilization in tight oil reservoir horizontal wells.
Insights into H2S Scavengers and Corrosion Inhibitor Interactions for Sour Crude Applications
Authors: Alotaibi F. , Rafie M. , Almubarak T. , Alomair A. 
Published: February 2024

Abstract
Hydrogen Sulfide (H2S) produces an acidic fluid that is corrosive to equipment, tubulars, and facilities generating what is called "sour corrosion". One viable option to handle this gas in processing facilities is to use H2S scavengers. The main objective of this study is to evaluate six different H2S scavengers aiming to reduce the effect of H2S gas in crude oil feeds without jeopardizing the corrosion inhibitor performance that used in Gas Oil Separation Plant (GOSP).
The tested scavengers were derived from different chemical families. Some of the active compounds of these scavengers included inorganic salts, polyhydric alcohols, organic acids, chelating agents, polyols, cyclic nitrogen compounds, potassium permanganate, and zinc oxide. These scavengers underwent compatibility tests with different corrosion inhibitors using HPHT aging cell at 200°F for 24 hours. Moreover, corrosion inhibition was evaluated using low carbon sour grade steel (T-95) metal coupons at 130°F for 24 hours testing time simulating GOSP conditions. The H2S scavenging assessment was conducted using standard aqueous geochemical methods by reacting iron sulfide (FeS) with hydrochloric acid (HCl) to generate H2S. The evolved H2S was allowed to pass through a reactor vessel containing the tested scavenger. Excess or unreacted H2S that was not captured by the scavenger was gravimetrically quantified using cadmium sulfate (CdSO4) to measure scavenging efficiency. Final scavenging capacity was calculated using mass balance approach for H2S through the system.
Based on the findings of this study, three chemicals emerged with acceptable scavenging capabilities and miscibility with hydrocarbon or aqueous phases. The results indicated that liquid-based scavengers had a higher scavenging capacity compared to solid scavengers. The corrosion inhibitors excellent performance for the duration of testing. The remaining scavengers did not pass the required scavenging efficiency or showed incompatibility with the carrier fluid.
This paper shares the process of evaluating H2S scavengers for sour crude feed applications. It focuses on an overlooked incompatibility between H2S scavengers and corrosion inhibitors which can cause severe consequences if not taken into consideration as both additives can potentially lose their intended functionality.
A Holistic Approach for Mitigating Scale Deposition in Highly Sour Gas Wells
Authors: Espinosa Mauricio A. , Leal Jairo , Chen Tao , Wang Qiwei 
Published: February 2024

Abstract
Formation of iron sulfide scale in the Khuff sour gas wells has been a persistent problem. Accumulation of scale deposits on downhole tubing and liner has resulted in significant operation problems, such as restricting wellbore surveillance, limiting downhole intervention, interfering with downhole logging, and damaging logging tools. Heavy scale deposition can also result in a significant reduction in well productivity when reaching perforated intervals.
Extensive efforts have been devoted in recent years to solve this challenge, including scale composition determination, scaling mechanism investigation, evaluation and deployment of various descaling technologies, understanding formation damage mechanism and development of field trials of preventative methods. Removing such scales has been a challenging and complex process. Coiled tubing (CT) mechanical descaling was developed and deployed in the past, by taking advantage of state-of-the-art technologies such as high RPM milling, downhole sensors, foamed cleanup tools and sophisticated surface collecting/well testing equipment. However, CT descaling operations have become limited in recent years, due to reduced downhole pressures in some wells as field matures.
This paper summarizes the holistic approach for mitigating scale deposition in highly sour gas wells, with emphasis on the results of field implementation of the newly patented scale dissolver (ISD) technology for dealing with the iron sulfide scales at high temperatures in the highly sour gas wells. Lab studies demonstrated that this chemical product have potentials to be use for both tubing/liner/completion and formation stimulation benefits as well. Field results showed significantly increased gas productivity in conjunction improved well operational factors, as well as retrieved well accessibility. A discussion on the different lab evaluation protocols is also presented and a final update on current scale clean-up strategies and future proposals are included.
The results presented in this work represent the lately advancements on iron sulfide scale management. The new scale dissolver technology is under commercialization and can be applied in all various systems such as oil and gas producers, water injectors, and surface handling facilities.
Prediction of Microbial Induced Bacteria Using Innovative Semisolid Growth Media for General Aerobic Bacteria at Specific PH
Authors: Mahmoud Mohamed A. , Al-Salman Ahmed H. 
Published: February 2024

ABSTRACT
Structural steel is widely used in marine environments because it is strong, readily available, easy to fabricate, and cost-effective. But steel is also subject to corrosion. Microbiologically influenced corrosion (MIC) plays a critical role in the pipeline corrosion process, caused by electrochemical reactions created by microorganisms that form ‘biofilms’ on immersed steel structures. The close monitoring of microbial growth is an essential process to protect the structural steel from biofilm formation. A semisolid growth media for quantitative and qualitative analysis of general aerobic bacteria (GAB) was studied and counterchecked with commercially available ready-made media Paddle tester double-sided slides, to prove the suitability to use the Total Coliform agar media with a two-day incubation at 35°C, for quantitative determination of GAB colonies at a specific pH range from 5.5 to 7.5. Several trials were conducted, including water streams at upstream facilities, rich with GAB and Coliform sources, and all the obtained results from both media were matched.
A Novel Approach to Mitigating Incoming Slug Flow at Upstream Oil Facilities Through Dynamic Behavior Modeling to Improve Efficiency in Oil-Water Separation and Energy Conservation
Authors: Kamandahalli S. , White R. , Khan Ashiff 
Published: February 2024

Abstract
This research presents a thorough description of a novel method for mitigating the consequences of incoming slug flow using dynamic simulation software. Additionally, it paves the way for future improvements in the model's deployment for real-time level controller tuning parameter adjustment.
In the facilities that receive multiphase wet crude from numerous distant manifolds with a number of trunk lines of expansive terrain, slug flows are quite typical. Operational challenges are brought on by the slug flow. Slug flows alter high-pressure production trap (HPPT) levels and separation efficiency, which will negatively affect the quality of the produced water and the crude oil, making handling slug flows in gas-oil separation plant (GOSP) facilities particularly difficult.
The objective of this study was to employ the dynamic simulation model to investigate the behavior of incoming slug flow to the inlet 3-Phase Separators and its ramifications on downstream equipment. The findings of the dynamic simulation are to be utilized to reduce the flow variability in downstream equipment by developing an appropriate level control scheme. This measure is aimed at enhancing the separation efficiency and conserving energy by minimizing the recycling operation of injection pumps. By utilizing HYSYS dynamic simulation model results, a novel control strategy was devised, involving the modification of the split range controller into two independent controllers. The larger valve controller was tuned for a slower response, whereas the smaller valve controller was set to be more aggressive. These adjustments improved level management and reduced the flow variations to Water Oil Separation (WOSEP) and downstream equipment. The newly developed control scheme was implemented in one of the HPPT’s and was further fine-tuned to minimize the level variations. The HPPT levels were able to be controlled automatically, as compared to the past practice of manual mode of operation. Additionally, the dynamic simulation results were employed to modify HPPT level settings to accommodate higher slug volumes, with the slug volume handling capacity increasing almost three-fold. The produced water quality from the WOSEP was enhanced, and the recycling operation of produced water pumps was reduced, resulting in energy conservation. The new logic reduced the flow variability and controllers could be operated in Auto mode. This resulted in the pumps operating at their BEP and improving energy efficiency.
Improving Energy Efficiency and Reducing Carbon Footprint of Oilfields Using a Rigorous Multi-GOSP Optimization Platform
Authors: Alhuraifi M. , Ghazal A. , He Y. , White R. 
Published: February 2024

Abstract
This work discusses optimizing the operations of a complex gas-oil separation plant (GOSP) network. The objective is to operate this complex network such that the required oil target is produced at minimum OPEX while leveraging the transfer capability between GOSPs. A mixed integer non-linear programming (MINLP) model is developed to optimize swing line production and processing equipment operation. This allows the systematic identification of optimal operating points, which optimizes operations. Consequently, it will result in further reduction in the processing cost and greenhouse gas emissions associated with power generation and flaring.
Many GOSPs exist to process crude production from oil wells to separate the multi-phase produced fluids into oil, gas and water. These plants include equipment, which are highly energy-intensive such as high-pressure gas compressors and water injection pumps, which are used to boost separated fluids to their final destinations. In addition, transfer lines might exist between facilities allowing for shifting production or part of it from one plant to another. As a result, there is an opportunity to optimize crude oil distribution among plants to improve asset utilization and minimize power consumption. This is in addition to the benefits of reducing greenhouse gas emissions by an average of 10% based on calculations using an MINLP model and Aramco's best practices for optimizing crude oil handling operations. The paper proposes use of parameter generation techniques to improve the model's prediction using data analytics, thereby delivering a digitalized fit-for-purpose application. This results in minimizing energy consumption while maintaining the oil target without added investment (neither OPEX nor CAPEX). Consequently, it will result in further reduction in the processing cost and greenhouse gas emissions associated with power generation.
This paper proposes a novel methodology to formulate and achieve a desired optimization solution. It also describes the level of fidelity used to model physical process equipment. This varies between use of detailed first-principles models in certain equipment to a more simplified representation elsewhere. This is done systematically based on the overall impact on the solution's accuracy and robustness.
Challenges in Gas Injection Compressor Foundation Design and Construction
Authors: Al Balushi H. M. , Al Mahrouqi M. , Al-Shaaili J. 
Published: February 2024

Abstract
This paper presents a case study of the challenges encountered during the design and construction of a GIC foundation at a PDO Gathering Station and the innovative solutions developed to address these challenges, ensuring the project's success. The compressor foundation block was modelled and analysed using STAAD PRO FEM software. SOLID Finite element elements discretized the FEM model for accurate stress analysis. A preliminary analysis determined the necessary footprint for the compressor and its associated ancillary elements, defining the shade structure's extent and orientation. Initial dynamic parameters for foundation analysis were obtained from available literature and a decade-old soil investigation report from a nearby location.
The engineering team collaborated with a consultant to correlate static-to-dynamic soil parameters for initial sizing, with the caveat that a detailed geotechnical investigation would be conducted within the new compressor's footprint. The borehole investigation revealed lower than expected dynamic parameter values, necessitating modifications to the foundation design. To avoid resonance between the foundation structure and the soil below, a thicker backfill soil layer was placed below the compressor foundation. Time constraints led to a single pour for the entire compressor foundation, requiring a detailed constructability review involving various stakeholders.
The engineering and construction teams successfully completed the GIC compressor foundation casting through unprecedented collaboration, safely and within the required timeframe. By adjusting the foundation's mass and geometry and providing a soil raft below, dynamic stability was maintained, and resonance avoided. The single concrete pour, equivalent to 306 m3 or 38concrete transit mixers, was a significant accomplishment, completed in 22 hours, avoiding additional efforts required for a two-stage pour. Throughout the project, the teams demonstrated the importance of creative problem-solving, collaboration, and effective project management in complex foundation projects within the oil and gas industry. The innovative solutions developed in this project have significant implications for similar foundation projects in the oil and gas industry. The use of soil stabilization techniques, advanced foundation design, customized equipment for site access, and collaboration among stakeholders can help overcome geotechnical constraints and expedite project delivery. The project highlights the benefits of using creative problem-solving, collaboration, and effective project management in complex foundation projects. Additionally, the successful execution of a single concrete pour for the entire foundation serves as a valuable learning experience for future projects, demonstrating the potential for efficient construction methods and time-saving measures without compromising safety or quality.
Offshore Platform Design Innovation: A Success of Accommodating More Wells and Safety Systems
Authors: Nengkoda A. , Saad A. S. , Mokhtar A. A. , Hajri M. H. , Zahrani A. S. , Shamekh T. A. 
Published: February 2024

Abstract
Several challenges have been encountered within offshore brown field developments, especially where the platform design, layout, and facility spacing should be determined within limited foot print, load, and economic considerations. A recommended practice related to planning, design, and construction of fixed offshore platforms has been highlighted by API RP 2A; however, the industry best practices as references to accommodate and add new wells within existing facilities are vary. The objectives of this paper are to highlight the decision-making process and the innovation to overcome an extra well with an additional higher rate to the platform without jeopardizing the facility's integrity. An integrated workflow consisting of wells, surface facilities, and network analysis is performed. These technical assessments cover mechanical (static and dynamic) loads, evaluating the status of the existing platform and jackets, structural integrity and subsea parts, production assurance, electrical requirements, and safety aspects as an impact of an additional new well. Some scenarios are demonstrated, and the detailed engineering modelling is simulated within high-rate scenarios, including facility integrity, stress analysis, flow-induced vibration, hydraulic, well, and piping erosion, and higher velocity impact. Furthermore, safety aspects, barriers, liquid handling, and relief systems will also be evaluated. The results show that structural facility integrity and subsea parts, load and impact, and flow assurance analysis were found to be the critical paths in guiding the new well addition and capacity gain.
Actividad física en la comunidad Corpista, relación con la salud y la calidad de vida
Authors: Amaya Flórez Diana Ivonne , Piñeros Ricardo Ana María , Osorio De Sarmiento Marta 
Published: February 2024

En esta investigación se analizó la importancia de la Actividad Física de un grupo de administrativos de la Fundación Universitaria Juan N. Corpas (FUJNC) en Bogotá - Colombia, en relación con su salud y su calidad de vida, fue de corte cualitativo hermenéutico y se utilizó como método, el estudio de caso, la muestra fue de 10 personas, a quienes se les aplicó la Encuesta Internacional de Actividad Física IPAQ (versión corta) y una entrevista semiestructurada de creación propia, obteniendo información de la importancia que tiene la actividad física en relación con su salud y calidad de vida, entre los hallazgos, la Encuesta IPAQ, mostró mayor nivel de actividad física en los hombres que en las mujeres. La entrevista semiestructurada, mostró que, uno de los aciertos más importantes refiere que los participantes relacionan la actividad física con la salud y la calidad de vida, asociando este resultado a los beneficios físicos y mentales y se concluye que, un grupo de administrativos de la FUJNC refiere practicar actividad física mínimo tres veces a la semana, sin embargo, una pequeña parte de ellos no la realiza a pesar de ser conscientes de la importancia que esta tiene para la salud.
Effect of “Tell Show Do” Method on Dental Anxiety in Pediatrics Dentistry: A Meta Analysis
Authors: Cahyani Mey Ditaputri , Widyaningsih Vitri , Prasetya Hanung , Simatupang Nanda Agustian 
Published: February 2024

Background: Anxiety in children will make it difficult for dentists to perform dental treatment. In dentistry, especially pediatric dentistry, children who are very anxious will avoid examinations and refuse dental treatment. This study aims to analyze the influence of the "tell show do" method in reducing dental anxiety in pediatric patients.
Subjects and Method: This was a systematic review and meta-analysis conducted using PRISMA flow diagrams. Search articles through journal databases including: Google Scholar, PubMed, and Springer Link by selecting articles published in 2016 and 2022. The keywords used are (“tell show do” OR “TSD”AND “dental anxiety” OR “anxiety” ) AND (“pediatric dentistry” OR “children”) AND (“RCT” OR “randomized control trial”). The inclusion criteria were full paper articles using the Randomized Controlled Trial (RCT) research method, the results of the analysis used the Mean SD value, the intervention provided was a tell show do, the study subjects were pediatric dental patients at the first visit, with dental anxiety as an outcome. Articles that met the requirements were analyzed using the Revman 5.3 application.
Results: The meta-analysis of 12 articles shows that there is an increasing effect using the tell show do method on reducing dental anxiety. Children who received the tell show do intervention had a dental anxiety level 0.54 units lower than those who did not receive the tell show do, and the effect was statistically significant (SMD 0.54; 95% CI= 0.23 to 0.85; p=0.0007).
Conclusion: The tell show do method has an effect on reducing anxiety in pediatric dental patients.

Keywords: tell show do, dental anxiety, meta-analysis