bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ossifying fibroma of maxilla – A pediatric case
Authors: Badhan Tejal , Shah Kanchan M , Landge Jayant S , Sindhuja K  
Published: April 2023

Ossifying fibroma (OF) is classified as, and behaves like, a benign bone neoplasm. It is often considered to be a type of fibro-osseous lesion (FOL). It can affect both mandible and the maxilla, particularly the mandible. This bone tumour consists of highly cellular, fibrous tissue that contains varied amounts of bone or cementum resembling calcified tissue. Present case is an unusual report of ossifying fibroma involving the left side of maxilla in a 13-year old male patient, who presented to the department with a painless hard swelling. The lesion was treated by surgical enucleation and curettage.Surgical enucleation and curettage was performed.: Healing was uneventful, patient has been kept on a regular follow-up regimen.The case report and treatment of an unusual case of Ossifying fibroma in the maxilla of a paediatric patient has been described. Based on our experience, we suggest that proper correlation of the clinical, radiological and histological features is necessary to establish a definitive diagnosis, as well as for proper surgical intervention. As reported in the literature, the rate of recurrence is not very high, but long term periodic follow-up is warranted.
“PHILO-PHILIPPA”: TO THE EXCELLENT ORINDA: UN POEMA LAUDATORIO DEDICADO A KATHERINE PHILIPS POR OTRA MUJER, EN EL SIGLO XVII
Authors: García Calderón Ángeles 
Published: April 2023

Autora de gran importancia en la poesía inglesa del siglo XVII, Katherine Philips atesora, entre otros méritos, el de haber sido alabada por Dryden, y celebrada por Cowley y Jeremiah Taylor, así como el de haber instaurado en la literatura inglesa femenina una tradición de escritos virtuosa y moral, reivindicada a su muerte por otras autoras relevantes.
Sin pretender ni buscar nunca halagos ni privilegios intelectuales durante su corta vida, sería no obstante ensalzada por escritores y personalidades tan importantes como The Earl of Orrery, The Earl of Roscomon, Abraham Cowley, James Tyrrell y Thomas Flatman. Además de todas estas alabanzas, Philips recibiría, como reconocimiento a su labor de escritora y traductora, un poema anónimo, se supone que escrito por una mujer irlandesa: “Philo-Philippa”: To the Excellent Orinda.
Basado en estas premisas el presente trabajo se articula en torno a tres ejes: a) la figura de la autora, b) un breve esbozo de la literatura encomiástica, c) la traducción del poema citado.
Optimizing Rod Pump Performance Using High Frequency, High Resolution Pressure Data at the Wellhead
Authors: Vekved Kerry , Ito Tokunosuke , Gordon Ryan 
Published: April 2023

Abstract
This is part of a case study designed to confirm that high frequency, high resolution pressure data measured at the wellhead of a pumpjack well can be used to evaluate and optimize the performance of the downhole pump. This paper will provide the rationale for the concepts and methods that will be used and tested during field trials of this approach.
For the field trials, participants are installing high-performance pressure monitoring devices on the tubing of rod pump wells upstream of the flow line check valve. Additional devices are being installed on the flow line. These Internet of Things (IoT) devices are rated for Class I, Division 1 hazardous zones, measure pressure at one-second intervals, and have a pressure resolution of 0.006 psi. The per-second pressure measurements are also time-synchronized and temperature-compensated for accuracy and will be delivered to a cloud-based data service over the course of several weeks.
For each well, the difference in pressure between the tubing and flow line will be analyzed in five-minute data windows. The pressure differential from each five-minute data window will provide a clear picture of the pressure the pump exerts on the flow line over the course of an average pumping cycle during that interval. Because pressure can be used as a proxy for flow, fill and efficiency at the bottom hole pump can be deduced from the calculated flow profile at surface, eliminating the rods and their associated error as the conduit of pump performance data. Assessments of pump performance using this technique will also be compared to results from production tests to determine how effective this technique is in evaluating rod pump performance. The large sample of five-minute data windows collected over the course of a month will test the technique against varying operational conditions. Furthermore, we will determine if particular pressure trends, as outlined in this paper, correlate with certain pump conditions during field trials, which would be of use for diagnosing pumping issues.
The approach of using high frequency, high resolution pressure measurement at the wellhead to assess downhole pump performance has shown promise in a previous case study (SPE-209253-MS). The current case study will add to the body of literature around this technique. Success with this technique would offer an economical alternative for monitoring rod pump performance of aging wells.
Slow-Release Downhole Chemical Treatment in Rod Pump, ESP and Gas Lift, Including a Non-Pulling Tubing Method of Installation
Authors: Chavarria Jose , Gonzalez Gustavo , Sanchez Donovan , Arias Renzo 
Published: April 2023

Abstract
The effect of traditional chemical treatments at the pump intake can be minimized due to the fluid level, high GLR, and production packers, among other reasons. Using a slow-release polymer matrix is an effective chemical treatment that was installed in several wells in the Delaware basin with Conoco Phillips. The chemicals were encapsulated in the matrix ensuring maximum absorption and then slow dispersion, and the tool was run under the intake of rod pumps, ESPs, and gas lifts.
In rod pumps, the installations were carried out by pulling the production tubing while in the Gas Lifts, the chemical tools were installed via slickline without pulling the BHA. In the gas lifts and rod pumps, the chemical tool can be replaced whenever the concentration levels reach the minimum effective concentration without pulling the tubing. To track the dispersion rate, the wells were sampled monthly to measure the concentration of scale and corrosion inhibitor and the amount of THPS downhole. The whole tracking history of the wells will offer valuable information about the chemical concentrations expected using downhole chemical treatment compared with the concentrations obtained while using surface treatments and the longevity of the treatment at the production rates and depths installed.
Corrosion and scale are some of the major issues in the Conoco Phillips field in the Delaware Basin. after installing the downhole chemical treatment in different wells, the KPIs determine stable conditions downhole without failures reported. The manganese and iron concentration remained stable in the wells assessed, the chemicals concentration has been above the MEC (minimum effective concentration) and the wells are still running. The main impact of these favorable conditions is the run time and the fact the total cumulative production increased compared to the same period before the installation.
Application of Machine Learning to Evaluate the Performances of Various Downhole Centrifugal Separator Types in Oil and Gas Production Systems
Authors: Osorio Ojeda Laura Camila , Olubode Michael , Karami Hamidreza , Podio Tony 
Published: April 2023

Abstract
Pumping artificial lift techniques, such as rod pumps and ESPs, are applied for gassy wells more than ever before. This has made the downhole separators a critical part of most such installations. There are multiple categories of downhole separators, with various techniques developed to assess and improve their performances, but no general guidelines are established for their application. This paper aims to classify the separator types and review their performances in the open literature. In addition, various data sets are collected and put together to evaluate and rank downhole centrifugal separators using data analysis and machine learning (ML) techniques.
A comprehensive literature review is conducted to collect the available downhole separator performance data. Experiments and Computational Fluid Dynamic (CFD) simulations are the techniques used by the researchers. This information is collected to identify the optimum conditions for each separator type, considering the effects of liquid and gas rates and other flow parameters. The data collected from various research projects over the last 20 years are combined to make a comprehensive downhole separation databank. These data are analyzed using various machine learning algorithms to rank the performances of downhole separators at various operating conditions.
Various downhole separators have been tested in the open literature, including poor-boy separators, two-stage separators, packer-type separators, rotary and spiral separators with different designs, etc. A critical factor that adds to the uncertainty is the separator's control system, which significantly affects its efficiency. The available data show that most separators provide separation efficiencies higher than 80% if the downstream casing valve is adequately controlled. The separation efficiencies decline as the liquid and gas rates increase past an upper limit. The collected data from multiple previous studies form a broad dataset. Data analysis is used to compare the performances of different downhole separator classes, and machine learning is applied to identify a robust prediction model. This paper gathers, interconnects, and examines several available research works through data analytics. The results provide a fundamental source and a valuable guideline for downhole liquid-gas separation, particularly in artificial lift applications.
A Robust Screening Tool to Repurpose Hydrocarbon Wells to Geothermal Wells in Oklahoma
Authors: Ugarte Esteban R. , Salehi Saeed 
Published: April 2023

Abstract
Geothermal energy is a renewable energy that has vast potential due to its reliable energy supply. Its development has been related to specific geological locations with extremely high temperatures. However, depleted oil and gas reservoirs can produce geothermal energy from the subsurface. Repurposing this well can be a valuable tool to generate sustainable and steady energy for the state of Oklahoma due to its large number of wells used in the Oil and Gas industry. In fact, abandoned oil and gas wells are suitable candidates for conversion as these are environmental liabilities. The challenge is selecting which wells are good candidates for geothermal applications. This study aims to build an evaluation methodology to filter wells with a high potential for geothermal production. Three factors, temperature, proximity to the end user, and well integrity, are analyzed for evaluating possible candidates. Three datasets of temperature gradients were gathered from the Oklahoma Geological Survey, abandoned oil and gas wells from the Oklahoma Corporate Commission, and cities’ locations and populations from the US Census Bureau were combined. The objective is to evaluate the wells in Oklahoma to select promising candidates for repurposing for geothermal applications. Temperature prediction was made using Spatial Interpolation using Thiessen polygons, K-nearest Neighbors, and Kriging. K-nearest Neighbors exhibited the highest performance based on the evaluation metrics. Temperature prediction at an average true vertical depth of 6000 ft showed 26.7% or 4292 wells have more than 150 °F and can be converted for geothermal production. The shortest distance heuristic algorithm was used to calculate the shortest distance of each well to any city in Oklahoma. Before conversion, an evaluation of the well is required to assess the volumes and condition of the well; methods include statical analysis, logging, and evaluation techniques. These are discussed in this study. This study shows the high number of wells with the potential to be converted for geothermal applications converting a liability and environmental concern to a renewable energy-producing asset.
Geomechanical Study and Wellbore Stability Analysis for Potential CO2 Storage into Devonian and Silurian Formations of Delaware Basin
Authors: Nguyen Son Truong , Nguyen Tan Cong , Yoo Hyunsang , El-kaseeh George 
Published: April 2023

Abstract
The objective of this project is to construct a 1D mechanical earth model for the prospective geological sequestration of carbon dioxide (CO2) into carbonate formations. The study sustains a pivotal role in analyzing the possible wellbore instabilities for drilling deep injection wells. Besides, the developed model can be essentially used to evaluate the caprock integrity for long-term CO2 storage and provide the primary analytical assessment of fault slip potential.
This paper describes the extensive construction of a geomechanical model to achieve three ultimate goals. A variety of petrophysical interpretations, shear wave velocity modeling, and Mogi-Coulomb failure criterion are initially established to deliver a safe drilling mud weight window for overpressure ramps in the Delaware basin, a sub-basin of the Permian. Using the dependable outputs of rock properties and strengths, top seal quality is subsequently determined by calculation of the brittleness index and critical pressure of tensile failure. Finally, pore pressure, shear stress, friction angle, and in-situ stresses are integrated to predict maximum sustainable injection pressures for preliminary fault slip analysis in deep aquifer carbonate rocks.
Two distinct overpressured zones of Wolfcamp and Barnett Shale are identified for wellbore instability based on pore pressure and fracture gradient prediction. These pressure ramps have a lower compressive strength, which causes the collapse pressure to exceed the pore pressure and serve as the lower bound of drilling mud weight. The wellbore stability simulation also shows low brittleness indices and high threshold breakdown pressures for Woodford shale caprock. It implies that the caprock may be more resistant to fracture growth and failure, indicating an effective top seal above the injected reservoirs. Meanwhile, close observation may be purposefully monitored to assess the fault slip potential in Devonian and Silurian formations once the critical injected fluid pressure approaches the projected threshold from the analytical computation.
The findings from this study will be useful in further understanding wellbore stability under drilling practices and CO2 sequestration. The appropriate application can support optimizing the casing and drilling mud weight design while also modifying the injection fluid pressure. Furthermore, the estimated rock properties, formation pressure, and principal stresses will be significant elements in building a hydrodynamic simulation of gas plume distributions after certain injection years.
Intentional Wet Shoetrack Completions for Unconventional Oil and Gas Resources: Methods and Techniques
Authors: Gundersen Anders , Gomez Ricardo , Kadler Chelsea , Broussard Taylor , Gandomkar Arjang 
Published: April 2023

Abstract
The shoetrack of an oil and gas well refers to the bottommost part of the casing string, from the bottom of the float shoe to the top of the landing collar, or to the top of the float collar if a landing collar is not used. A wet shoetrack is defined as the lack of competent cement in the shoetrack of a cemented completion string. In applications where a wet shoetrack is undesirable, the most important purpose of the shoetrack is to allow fluid to flow out of the casing string (casing to annulus) but prevent fluid from entering (annulus to casing). Control over fluid flow direction is achieved by multiple redundant one-way check valves installed in the shoetrack that only allow flow from casing to annulus. The one-way check valves also prevent the cement from flowing from the annulus and into the casing at the end of the cement job in a phenomenon called U-tubing. This occurs because the cement has a higher density than the displacement fluid resulting in a differential pressure acting from the annulus to the casing. The ability to prevent fluid from entering the casing string, together with other equipment such as a blowout preventer, enables well control while installing and cementing the casing string.
A wet shoetrack in oil and gas well construction has historically been both unintentional and undesirable. In the best case, it was a minor inconvenience, while in the worst case it was a critical Health, Safety and Environment (HSE) risk. Costly remediation operations, such as a cement squeeze, might have been required to establish a competent shoetrack before continuing with subsequent operations.
The practice of completing the production casing strings in low-permeability unconventional oil and gas formations with intentional wet shoetrack completions started to take off in the early 2010's in the USA, especially on 4-1/2″ liners in the Bakken Formation, but soon also in the DJ-Basin, Permian and SCOOP/STACK formations. The growing popularity was driven by the need to cost-effectively pump down the first stage of plug and perf completion, and the significantly reduced well control risk compared to higher permeability conventional oil and gas formations. Intentional wet shoetrack completions soon became a real alternative to tubing conveyed perforation, sand jetting, and pressure-actuated atmospheric ("air") chamber sliding sleeves ("toe sleeves") to create the injection path for the first stage of plug and perf completion.
This paper aims to describe the different methods and techniques used to create intentional wet shoetracks on longstring and liner production casing strings in low-permeability unconventional oil and gas formations.
An Efficient Hydraulic Fracture Geometry Calibration Workflow Using Microseismic Data
Authors: Bachi Hana , Wu Jianfa , Liu Chuxi , Yang Xuefeng , Chang Cheng , Yu Wei , Sepehrnoori Kamy 
Published: April 2023

Abstract
Microseismic technology has proven its efficiency to monitor hydraulic fracturing effectiveness. The objective of this study is to develop a novel method to calibrate and generate the hydraulic fracture cluster-based model of a multi-stage horizontal shale well using the microseismic data. We use microcosmic numerical model known as Microseismic EDFM software feature (MSE-Frac) with the embedded discrete fracture model to simulate the hydraulic and natural fractures and the discrete fracture network. The MSE-Frac can handle the grouping of the clustered microcosmic events around the wellbore and generate a cluster-based model of the complex fractures network. Afterwards, we apply different factors on the hydraulic fractures, natural fractures, and the discrete fracture network to calibrate the fracture's geometry to match the historical data. This method allows us to determine the best parameters to be applied on this model to calibrate the hydraulic fracture geometry, and to find the fractures' characteristics for optimal production. Finally, we perform a production forecasting study for the next twenty years. Through this study, we develop a novel method to calibrate the complex hydraulic fracture geometry starting from the microseismic data. Four main parameters are investigated, namely, height and length cutoff, water saturation, compaction coefficient, and conductivity of the complex hydraulic fracture network. Multiple studies have been conducted to calibrate the geometry of the hydraulic fractures, but relatively less work is focused on utilizing the microseismic events even though they are largely available to most operators. Heretofore, there are no thorough studies on innovating a workflow to calibrate and position the fracture geometry starting from the microseismic events. Our models use more precise methodical approaches to simulate and calibrate the complex hydraulic fracture geometry based on microseismic events.
Optimization of Feed for Nile tilapia (Oreochromis niloticus) using an Excel Programming Model in Small-scale Feed-mixing Operations in Togo
Authors: BOMA Soudah , N'FEIDE Toï , LOMBO Yao , BATIMSOGA Bougra , KOSSOGA Assota , BATAKA Koutera , TOKO Ibrahim IMOROU , OMASAKI Simon Kipkemboi 
Published: April 2023

Abstract
This study aims to develop an Excel programming model to formulate feed for Nile tilapia (Oreochromis niloticus), mainly for small and medium-sized fish feed manufacturers. The model allows users to formulate the least costly balanced diet of Nile tilapia species, giving them the ability to choose a specific ingredient in the formulation according to the realities of the local environment: space-temporary availability of ingredients, prices and nutritional quality. Computer programming of a database of 25 locally available feed components was carried out using the Excel Solver Add-in and Excel IF mathematical functions to incorporate/delete specific ingredients in real time in accordance with user objectives. The theoretical characteristics of the least-cost balanced diets performed were within the margin of the nutrients requirement of the target fish size with protein levels of 35 per cent (fry diet: $1.07), 32 per cent (fingerlings diet: $0.48/kg), 29 per cent (growth diet: $0.43/kg) and 27.12 per cent (final diet: $0.39/kg). The digestible energy of these diets was between 3016.5 ± 93.8 kcal. In addition, the model shows that an increase in soya meal prices by 75 per cent led the local feed industry to rely on imported fish meals, as the number included reached 52.28 per cent. However, the cost of the diet margin did not vary significantly. Nevertheless, it would be important to test the balanced diet developed with the model before production and scaling.
Evaluation of GnRH antagonist pretreatment before ovarian stimulation in a GnRH antagonist protocol in women with poor ovarian response undergoing IVF/ICSI: A retrospective propensity-score-matching study
Authors: Zhang Yisheng , Li Ning , Qin Jie , Liu Liling , Huang Hongyi , Xue Lintao , Tan Weihong 
Published: April 2023

Abstract
Backgroud: A low number of retrieved oocytes significantly affects the clinical pregnancy rate (CLR) in patients with a poor ovarian response (POR).The aim of this study was to assess the effect of GnRH antagonist（GnRH-ant） pretreatment performed on days 2 to 4 of the menstrual cycle on pregnancy outcomes in women with POR undergoing in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI).
Methods: We conducted a retrospective study of 208 women with POR undergoing IVF/ICSI from January 2018 to August 2021. The pretreatment GnRH-ant protocol (study group) comprised 32 patients, and the conventional antagonist protocol (control group) included 176 patients. A propensity-score-matching (PSM) method using nearest neighbour matching at a proportion of 1:3 was performed. After PSM, we compared the pregnancy outcomes of each group.
Results: After PSM, there was no significant difference in age, antral follicle count (AFC), AMH level, or gonadotropin (Gn) level between the two groups (P>0.5). There were no significant differences in the number of retrieved oocytes, mature oocytes, normally fertilized oocytes, transferable embryos, and good-quality embryos between the two groups (P>0.05). There were no significant differences in biochemical and clinical pregnancy rates between the two groups (P>0.05). The implantation rate [34.4% (11/32)] and live birth rate [50.0% (8/16)] of the studygroup were higher than those of the control group [15.5% (9/58), P=0.039; 13.8% (4/29), P=0.014].
Conclusions: Treatment with a GnRH antagonist on day 2 to day 4 of the menstrual cycle did not increase the number of retrieved oocytes or the clinical pregnancy rate in women with POR undergoing IVF/ICSI, but it may increase the live birth rate.
Trial registration: Chinese Clinical Trial Registry, ChiCTR1800019730.