bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Teoria das Representações Sociais como referencial teórico-metodológico na pesquisa em Geografia: análise de teses e dissertações presentes na Capes de 2012 a 2016
Authors: Yaegashi Solange Franci Raimundo , Oliveira Bethânia Vernaschi de , Oliveira Lucilia Vernaschi de 
Published: April 2019

A Teoria das Representações Sociais (TRS) foi idealizada por Serge Moscovici no início da década de 1960 e tem sido utilizada em diferentes áreas do conhecimento para investigar como são produzidos, organizam-se e são veiculados os saberes sociais, utilizados para interpretar a realidade concreta na inter-relação dos grupos sociais. A presente pesquisa tem como objetivo analisar o uso da TRS como referencial teórico-metodológico para o ensino da Geografia na educação básica. Para a realização deste trabalho, selecionamos pesquisas stricto sensu cadastradas no banco de teses e dissertações na Coordenação de Aperfeiçoamento de Pessoal e Nível Superior (CAPES), no período de 2012 a 2016. Analisamos quatro teses e 25 dissertações, para isso organizamos dois quadros e um gráfico nos quais distribuímos informações relevantes do material analisado. Além disso, organizamos semanticamente, as 29 pesquisas em cinco categorias de análise. Os resultados apontam que a TRS tem sido um importante referencial teórico-metodológico para compreender fenômenos da Geografia e das diversas implicações que envolvem essa disciplina escolar.
A Atuação do Estado Brasileiro nas Políticas Públicas para Educação Profissional nos Governos Fernando Henrique Cardoso (1995-2002) e Luiz Inácio Lula da Silva (2003-2010)
Authors: Oliveira Arão Davi , Silva Celeida Maria Costa de Souza e 
Published: April 2019

Este artigo discute as principais políticas públicas voltadas à educação profissional dos governos Fernando Henrique Cardoso (1995-2002) e Luiz Inácio Lula da Silva (2003-2010) no contexto da fase de acumulação flexível do capital. Focaremos nossas discussões nos programas PLANFOR e PROEP para o período de 1995 a 2002; para o período de 2003 a 2010, nos programas e ações: fortalecimento e expansão da Rede Federal de Ensino Técnico, criação da Rede e-TEC Brasil, no programa Brasil Profissionalizado; por fim, no acordo de gratuidade com o Sistema S. Essa é uma pesquisa documental e bibliográfica ancorada nos conceitos de “Estado” de (GRAMSCI, 1991). É possível afirmar que no período estudado, as diferentes articulações entre a educação e o trabalho foram mediadas pelo Estado em âmbito federal por meio de políticas públicas voltadas à educação profissional as quais atenderam, em maior parte, aos interesses de organismos internacionais e grupos de empresários nacionais os quais requisitavam força de trabalho mais flexível adaptada as novas demandas do sistema produtivo na fase de acumulação flexível do capital.
Aspectos socio demográficos y calidad de vida en salud Bucal, del personal del municipio de Azogues – Ecuador
Authors: Dominguez-Crespo Cristina , Crespo-Crespo Cristina , Vallejo-Aguirre Fernando , Garcia-Rupaya Carmen , Evangelista-Alva Alexis , Del Castillo- López Cesar 
Published: April 2019

Objetivo: Asociar los aspectos socio demográficos y la calidad de vida en salud bucal del personal del Municipio de Azogues – Ecuador. Material y métodos: La presente constituye una investigación transversal, descriptiva, observacional misma que investigó a 185 adultos, aplicándoles una encuesta para determinar aspectos relacio- nadas a datos personales, determinantes sociales y uso de servicio odontológico. Seguido se indagó sobre el im- pacto de la salud bucal en la calidad de vida utilizando el cuestionario validado Ohip –14Sp. Se efectúo análisis univariado y bivariado. Para el estudio bivariado se utilizó el Odds Ratio (OR) para asociar los factores mencio- nados con la calidad de vida relacionada a la salud bucal (CVRSB). Se contó con un nivel de confianza del 95% y un p<0,05. Resultados: No se encontró asociación estadísticamente significativa al evaluar todas las variables con CVRSB; el grupo con la mayor prevalencia de impactos según el nivel de instrucción fueron Universitarios con un 46%; según el ingreso mensual, los de ingreso mensual menor a $1000 con un 66%; de acuerdo a la denominación laboral los trabajadores con un 53%; de acuerdo al motivo de consulta, fueron otras causas 39%. Sin embargo, a pesar de que no hay una asociación significativa, se puede apreciar que el sexo masculino fue el más impactado. Conclusiones: Las determinantes sociales y CVRSB no estuvieron asociados. Las dimensiones limitación funcional, dolor físico y obstáculos fueron las más frecuentes.
Conocimientos, actitudes y prácticas de padres/ cuidadores sobre salud bucal en el distrito de Ventanilla
Authors: Victorio-Pérez Jhoana , Mormontoy-Laurel Wilfredo , Díaz-Pizán María Elena 
Published: April 2019

Objetivos: Determinar la relación entre los conocimientos, actitudes y prácticas de padres/cuidadores y el estado de salud bucal de sus niños de 3 a 5 años de edad pertenecientes al Centro Educativo Inicial (C.E.I) N° 120 “Casuarinas”, Distrito de Ventanilla. Material y Métodos: El estudio fue de tipo transversal y observacional. Se contó con la participación de 79 niños de 3 a 5 años de edad y sus respectivos padres/cuidadores. El análisis univariado de las variables cuantitativas se realizó mediante el cálculo de la media y desviación estándar (medidas de resumen), y de las variables cualitativas mediante la determinación de proporciones. La evaluación de la higiene bucal fue realizada según Green y Vermillion mediante el índice de higiene oral simplificado (IHO-S) y de caries dental según Gruebbel (índice ceo-d). Además, se evaluó la relación entre conocimientos, actitudes y prácticas (CAP) y caries dental e higiene bucal mediante el coeficiente de correlación de Spearman. Resultados: Se encontró una prevalencia de caries de infancia temprana (CIT) de 82,3%, un ceod de 5,24 y un IHO-S de 1,56 en los niños evaluados. No se encontró asociación estadísticamente significativa entre los índices ceo-d e IHO-S de los niños y conocimientos, actitudes y prácticas sobre salud bucal de sus padres/cuidadores, excepto en actitud. Conclusiones: Se encontró un nivel regular de conocimientos, actitudes y prácticas, y una relación moderada estadísticamente significativa entre actitudes de los padres/cuidadores y el estado de salud bucal de sus niños (Índice ceo-d, p < 0,05; IHO-S, p < 0,05).
Understanding Flow Through Interwell Tracers
Authors: Tello Bahamon Cristhian Camilo , Mora Gisela , Acosta Tito Jose , Manrique German Alberto , Quintero Diego Fernando 
Published: April 2019

Abstract
This paper presents the successful implementation of an interwell tracer program performed in a multilayered reservoir with mature waterflooding. The objectives of the program are to evaluate water channeling in a high water cut field and, assess sweep efficiency improvements in an EOR pilot test. An extensive methodology was prepared to ensure the quality of the program. The first stage followed the screening of areas and reservoir layers with underperforming waterflooding. After that, the design stage included a selection of tracer available in the market, volume calculation and breakthrough time simulations. The execution plan defined the optimum injection rates, equipment and lab tests requirements for the monitoring and field sampling schedule. The results were being recorded in a monthly progress report and analyzed by a technical team in charge of the project. Interwell tracers made possible to confirm water channeling issues and provided information about the severity of preferential flow using the breakthrough times obtained for each reservoir layer. It was also possible to observe how changes in injection rate impacted the recovery of the tracers, creating different flow patterns at different flow rates. The six-month monitoring ended with the estimation of channel volume to design water conformance treatments. In addition, the findings from the interwell tracer conducted in the EOR pilot test showed an increase in the breakthrough time after three years of polymer flooding and, a change in flow patterns that allowed the displacement of previously bypassed oil. These results are interpreted as a measurable improvement of sweep efficiency and served as input to appraise the performance of the pilot test.
First Ever Polymer Flood Field Pilot - A Game Changer to Enhance the Recovery of Heavy Oils on Alaska’s North Slope
Authors: Dandekar Abhijit , Bai Baojun , Barnes John , Cercone Dave , Ciferno Jared , Ning Samson , Seright Randy , Sheets Brent , Wang Dongmei , Zhang Yin 
Published: April 2019

Abstract
The development pace of Alaska's vast, 20-25 billion barrels, heavy oil resources has been very slow due to high development costs and low oil recovery using conventional waterflood, and the impracticality of deploying thermal methods due to the presence of continuous permafrost. Although, polymer flooding has attracted attention and has become a promising EOR technique in heavy oil reservoirs due to the extensive application of horizontal wells and advancement of polymer flooding technology, no field tests have been performed to date in Alaska's underdeveloped heavy oil reservoirs. The overall objective of this research is to perform a field experiment to validate the use of polymer flooding for extracting heavy oil in Alaska's challenging environment.
Two pre-existing pairs of horizontal injection and production wells in an isolated fault block of the Schrader Bluff heavy oil reservoir at the Milne Point Field are currently being used for the field experiment. Hydrolyzed polyacrylamide (HPAM) polymer injection started on August 28, 2018 at 600 ppm (4 cP viscosity) concentration ramping up to 1,800 ppm (45 cP viscosity) over a three week time period, and has been maintained at an average concentration of ~1,800 ppm. Current injection rates in the two horizontal injectors are ~2,200 and 600 bwpd. Laboratory experiments to determine the polymer retention, optimum water salinity, synergistic effects of water salinity and polymer, and handling of produced fluids, in support of the field experiment, are currently ongoing. Similarly, reservoir simulation of coreflood behavior and history match of previous waterfloods to predict polymer flood performance in the project area are also conducted in parallel.
The field data and scientific knowledge that have been collected since the start of the injection indicates that the field pilot is performing as predicted. To date, no unexpected injectivity issues or polymer breakthrough have been encountered, and the two horizontal producers are showing positive response to the polymer injection, resulting in incremental increase in oil production rate. Since the research is still in its early stages, selected field, laboratory and simulation results are presented and discussed to highlight the integrative approach adopted in this first ever polymer flood field pilot in Alaska.
Modeling Naturally and Hydraulically Fractured Reservoirs with Artificial Intelligence and Assisted History Matching Methods Using Physics-Based Simulators
Authors: Eltahan Esmail , Yu Wei , Sepehrnoori Kamy , Kerr Erich , Miao Jijun , Ambrose Ray 
Published: April 2019

Abstract
Unconventional reservoirs typically exhibit large uncertainty in rock and fracture properties coupled with significant heterogeneity making manual history matching a challenging endeavor. Computer-assisted methods of history matching gained preference because they honor the non-uniqueness of the possible geological and fracture realizations by allowing efficient simulation sensitivities over many possible outcomes. This study integrates EDFM's fracture-modeling capabilities into an artificial intelligence-based history matching and optimization tool, to achieve more confidence and capability in simulations for production forecasting and reservoir-behavior studies.
This approach involves four main steps: (1) initializing EDFM-fracture parameters for a realization, (2) running a pre-simulation command that calls the EDFM-preprocessing engine and generates an updated model, (3) running the model on an appropriate simulator, and (4) calculating the objective function. We apply this method to perform history matching for a horizontal tight-oil well in the middle Bakken. We further repeat history matching for the same model after including a set of 1,000 randomly distributed natural fractures. In both studies, four embedded-fracture parameters are set to vary within predefined continuous ranges.
The objective is to minimize history matching error for field-recorded, bottom-hole pressure and gas production data with oil production history set as a constraint. This new method, with a more realistic fracture geometry, resulted in a better match to the field-recorded data compared to a previous study that was based on a local gird refinement model. After introducing natural fractures to the model, history-matching results displayed a trend of decreasing rock-matrix permeability and fracture conductivity compared to the original scenario without natural fractures. In this case, history matching error response was most sensitive to rock-matrix permeability followed by fracture half-length. We then made 30-year production forecast using the most optimal solutions. Accepted solutions were screened based on a cut-off value of 5% normalized history-matching error. We finally demonstrate that, even though the presence of natural fractures significantly altered the model, it did not have a major influence on long-term production.
A Robust Reservoir Screening Approach to Identify IOR/EOR Opportunities from Mature Oilfields
Authors: Chen Peila , Zhu Yidan , Deka Anisha , Kuma Chandan , Kuma Manish , Balasubramanian Sriram , Thakur Ganesh 
Published: April 2019

Abstract
The paper demonstrates a robust and efficient screening workflow and methodology that identifies reservoir candidates for improved oil recovery/enhanced oil recovery (IOR/EOR) methods. This workflow integrates rigorous analysis of production/injection data with understanding of reservoir geology and petrophysics. Firstly, based on screening criteria including reservoir properties and volumetric estimates, the reservoirs were studied and ranked. The screening study was supported by incorporating the evaluation of geological framework, facies distribution, and flow barrier. Secondly, the reservoir drive mechanism was investigated through MBAL study. Thirdly, various production performance plots were generated to evaluate waterflood performance. The diagnostic plots included hydrocarbon production rate, water injection rate, gas oil ratio (GOR), number of active oil producers versus time; and water oil ratio, hydrocarbon production rate, water injection rate versus cumulative oil. The ABC (after before compare) plot was also analysed to identify the regions for IOR/EOR opportunity. Simple gas/chemical EOR feasibility studies were also performed based on reservoir static and dynamic data available.
Fifty (50) mature oil reservoirs were ranked and the high potential reservoirs for IOR/EOR were identified. Considering gas EOR opportunity, the key parameter under study was the minimum miscibility pressure (MMP), mobility ratio, GOR and reservoir pressure. Diagnostic plots were generated to assist in the analysis of waterflood response. A plot of water oil ratio with cumulative oil led to a conclusion to maintain the WOR to follow a specific trend. The time needed to re-pressurize a reservoir was considered in addition to evaluating geological heterogeneities and sand continuity to determine if certain IOR methods will be effective and economic. Through this workflow, additional IOR/EOR opportunities were identified to increase production and/or extend the reservoir life. The reservoir analysis has indicated the reservoirs under study have a high side opportunity of adding over 5.4 MMKLS of recovery through effective reservoir management.
The waterflood performance review and IOR/EOR screening workflow incorporates geological aspects along with static, dynamic, and operational parameters, which is appropriate for a large number of reservoirs underconsideration. These insights, evolved from practical field experiences, are beneficial for revitalizing mature water floods, and more importantly the design and implementation of suitable EOR pilots.
Model Evaluation of Sand Transport Under Gas-Liquid Stratified Flow
Authors: Dabirian Ramin , Mohammadikharkeshi Mobina , Mohan Ram , Shoham Ovadia 
Published: April 2019

Abstract
Sand transport in multiphase flow has recently gained particular attention of many companies in oil and gas industry owing to unpleasant circumstances that particle deposition accompanying. The main objective of this study is to evaluate the performance of some existing models for the prediction of the critical sand deposition velocity under gas-liquid stratified flow against acquired experimental data.
Experimental data are acquired under stratified flow regime with the air as gas phase, and the water as liquid phase. Spherical glass bead with three particle sizes of 70, 185 and 510 μm with concentrations less than 0.0045 vol/vol are utilized as solid phase. A horizontal 0.1 m ID test facility is designed and constructed in order to investigate the effects of parameters such as phase velocities, particle concentration and particle size on the critical sand deposition velocity. The acquired data are compared with previous models developed by Salama (1998), Stevenson and Thorpe (2002), Hill (2011), Ibarra et al. (2014) and Dabirian et al. (2017) to determine the most reliable model for the prediction of the critical sand deposition velocity.
The experimental data show that depending on the particle size and concentration, the critical velocity can change either linearly or exponentially with particle concentration. The evaluation of the previous models with acquired experimental data confirm that Ibarra et al. (2014) and Dabirian et al. (2017) models generally show better performance for the predictions of the critical velocity. Models proposed by Salama (1998) and Hill (2011), respectively, under-predicts and over-predicts the critical velocities under various experimental conditions. Also, the comparison of Stevenson & Thorpe (2002) model and the experimental data corroborates that the model is not an accurate predictive tool for the critical velocity.
Analytical Model of Fault Leakage in Compartmentalized Reservoirs Considering Three-Directional Flow in the Fault Zone
Authors: Mosaheb Mojtaba , Zeidouni Mehdi 
Published: April 2019

Abstract
Faults are planar interfaces that intersect the sequential sedimentary layers and may provide a hydraulic connection between the confined layers. Early warning of undesirable fluid leakage into the shallower formations is important in geological storage/disposal operations. Pressure pulses travel fast and carry information that is directly related to the fluid movement through the media. In this study, we provide an analytical model to evaluate the pressure perturbation of fault leakage into a shallower layer. The solution is derived by coupling the fluid flow equations of the two layers as well as the planar interface of the fault. Results show that the solution is useful for interpretation of the pressure variations to identify the anisotropic fluid flow through the fault. The solution can be applied to separately evaluate leakage to the other side of the fault and the above layer as well as the horizontal leakage along the fault plane.
Integrated Workflow Reduces Uncertainty in Type Well Construction and Production Forecasting of Multi-Fractured Horizontal Wells
Authors: Lemoine Romain , Lee John 
Published: April 2019

Abstract
A common purpose of type wells is to predict the production profiles of multi-fracture horizontal wells (MFHW) in a selected geologically similar area (GSA) in a resource play. This paper presents a unique workflow that leads to type well production forecasts as analytically scaled rate-time profiles for an identified range of reservoir and completion properties.
The workflow uses production data from all MFHW's in a GSA to build more representative type wells. First, we sort and bin the wells, accounting for observed flow regimes (transient and boundary-dominated flow). We then extract physical properties from the data using curve-matching techniques. Using these properties, we can forecast the production profile of any well already in BDF. For wells still in the transient flow regime and for undrilled wells, we probabilistically forecast performance using distributions of observed properties (such as permeability and fracture length) from existing wells in BDF and Monte Carlo simulation.
We demonstrate that the analytical scaling factors resulting from type-curve matching can be used to construct a probability distribution of production forecasts from type wells. We can scale the type well production profiles to a given set of reservoir and completion properties, including observed average sets of properties from well analyzed or based on altered completion designs. We illustrate the workflow with a data set of 126 MFHW gas wells in the Denton County, Texas, Barnett shale. Using information extracted from this data set, we forecasted production for undrilled wells and validated the forecasts using a sequential accumulation plot with information from10 analog wells.
Type wells are important tools for decision makers and engineers to determine economic feasibility of proposed development projects and estimate reserves. As opposed to purely empirical methods used for type well construction, our analytically-based workflow provides an integrated GSA characterization, reliable production forecasts and better tools for decision making with reduced uncertainty.
A New Analytical Model to Predict Oil Production for Cyclic Steam Stimulation of Horizontal Wells
Authors: Chen Fangxuan , Liu Huiqing , Dong Xiaohu , Wang Yanwei , Zhang Qichen , Zhao Dandi , Gai Pingyuan , Yin Fanghao , Qu Li 
Published: April 2019

Abstract
For cyclic steam stimulation (CSS) process of horizontal wells, previous studies mainly focused on the shape of heating zone and few scholars took heat losses from upper and lower reservoir rocks into consideration. However, it is hard to accurately describe the shape of heating zone accounting for steam override and boundary shielding effect. And on-site production cares more about the heating volume and efficiency which determine the cumulative oil production rate. As a result, the object of this paper is to propose an accurate and computationally efficient method for calculating heating volume and oil production rate.
In order to precisely describe the heating zone, a scaling factor, M0, is introduced to coordinate the maximum and minimum heating volume. The maximum heating volume is calculated by assuming there is no heat loss from upper and lower reservoir rocks while the minimum heating volume is demonstrated by assuming the heat losses from an equivalent vertical well. Besides, time-dependent average temperature, pressure and saturation are included to demonstrate steam override effect. Instead of using conductivity equation, frictional pressure loss from toe to heel is solved by an iteration scheme.
Results of this model are compared with results simulated from commercial software Computer Modeling Group, STARS. Daily oil production rate exhibits good agreement between the proposed model and STARS. Different thermal conductivities and diffusivities of sandstone, shale rock and limestone are considered to expand the application of this model. Moreover, different values of M0 are calculated for further validation. This thermal model can be an effective predictor for planning heavy oil field development.