bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Nonisothermal Wellbore Model and Its Application in Well Testing
Authors: Wilson Adam 
Published: January 2017

This article, written by Special Publications Editor Adam Wilson, contains highlights of paper IPTC 18152, “A Nonisothermal Wellbore Model With Complex Structure and Its Application in Well Testing,” by Shiyi Zheng, SPE, London South Bank University, and Yiqun Zhang, SPE, Heriot-Watt University, prepared for the 2014 International Petroleum Technology Conference, Kuala Lumpur, 10–12 December. The paper has not been peer reviewed.
Although the wellbore is in a nonisothermal environment, heat transfer between the fluid in the wellbore and the formation is often ignored and temperature is usually assumed constant in data interpretation, which will lead to misunderstanding of the pressure profile. In this work, wavelet transform and a nonlinear-regression-analysis method were used to study the relationships between downhole temperature, pressure, and flow rate. A nonisothermal wellbore model was established that is capable of predicting temperature, pressure, flow rate, and liquid-fraction profiles under multirate and multiphase production scenarios.
Introduction
In order to monitor the downhole production and injection conditions, as well as make decisions for well-performance optimization, the dynamic temperature data acquired from permanent downhole gauges (PDGs) and distributed-temperature sensors (DTSs) are often interpreted widely.
In this paper, first, the relationships among bottomhole-pressure (BHP), -temperature (BHT), and flow-rate data were analyzed briefly by use of wavelet transform and nonlinear regression. Next, a nonisothermal wellbore model with complex structure was derived theoretically step by step. Then, the wellbore model was coupled with an existing reservoir model through BHT. After that, several synthetic cases were simulated to verify the wellbore model. Finally, on the basis of the coupled wellbore/ reservoir model, the transient temperature behavior during flowing and shut-down periods was drawn out for well-testing analysis and some typical thermodynamic parameters were estimated by use of a set of field data.
BHT, BHP, and Flow-Rate Relationships
It is worth noting that formation pressure and temperature emerged in many similar characteristics. First, temperature and pressure meet the same diffusion equation. Second, at the junction between formation and well, near-wellbore damage should be considered for pressure. At the same time, on the temperature side, heat loss should also be considered, located in the formation, casing, tubing, and cement. Third, wellbore storage is compared with heat-capacity coefficient in wells. Fourth, constant-pressure and impermeable boundaries have been set for pressure boundaries, but the temperature boundary is always regarded as infinite ground. Analyses of the measured PDG data show that the temperature can also be used to provide reservoir information.
Formation-Damage Diagnosis Facilitates Successful Remediation in Sandstone
Authors: Wilson Adam 
Published: January 2017

This article, written by Special Publications Editor Adam Wilson, contains highlights of paper SPE 174279, “Formation-Damage Diagnosis Facilitates a Successful Remedial- Treatment Design and Execution in Sandstone Horizontal Oil Producer: A Laboratory and Field Case Study,” by M.A. Bataweel, SPE, A.H. Al-Ghamdi, SPE, P.I. Osode, SPE, T.A. Almubarak, SPE, E.S. Azizi, SPE, Eddy Sarhan, SPE, and M.G. Al-Faifi, SPE, Saudi Aramco, prepared for the 2015 SPE European Formation Damage Conference, Budapest, Hungary, 3–5 June. The paper has not been peer reviewed.
Well-control fluids were used during a routine overbalanced workover operation in an offshore well completed in high-permeability sandstone. A fluid-loss-control pill was used to control excessive losses; however, because of the high permeability of the reservoir and the absence of sized particles in the pumped pill, a large amount of fluid was lost to the formation. A comprehensive review, accompanied by laboratory work, was conducted to identify the damaging mechanism and formulate a remedial treatment.
Introduction
Polymer-based fluids are beneficial in terms of generating viscosity to clean out the wellbore during any well intervention. Improper polymer selection has led to significant formation damage in several situations. Polymers also can invade the high-permeability zones, hampering hydrocarbon flow through the zones. Bipolymers generally are removed through acidizing, which breaks down the polymer backbone. The damage caused by polymers can be minimized with proper polymer selection.
Standard remedial treatments for removing the near-wellbore polymer include injecting solvents (e.g., xylene), acids, alcohols, glycols, surfactants, or a mixture of these liquids into the well.
In sandstone well treatments, formation composition should be considered carefully, especially minerals susceptible to acid attack. Three potential damaging mechanisms can occur during sandstone acidizing: formation deconsolidation in acid; reprecipitating during primary, secondary, and tertiary reactions; or the release of fines because of partial decomposition of minerals in acid.
In the case of damage with oil-based material or emulsions, microemulsion treatments have been recommended. The microemulsion will solubilize the oil and emulsions and fluidize the filter cake into a single mesophase while dissolving the acid-soluble particles and making the solids and formation rock water-wet. The oil-based-mud particles in a filter cake will disperse, allowing the produced fluid to displace these blocking particles from the damaged zone into the wellbore and through any screens.
Nanoscale Surface Modifications of Medical Implants for Cartilage Tissue Repair and Regeneration
Authors: Griffin MF , Szarko M , Seifailan A , Butler PE 
Published: January 2017

Background:
Natural cartilage regeneration is limited after trauma or degenerative processes. Due to the clinical challenge of reconstruction of articular cartilage, research into developing biomaterials to support cartilage regeneration have evolved. The structural architecture of composition of the cartilage extracellular matrix (ECM) is vital in guiding cell adhesion, migration and formation of cartilage. Current technologies have tried to mimic the cell’s nanoscale microenvironment to improve implants to improve cartilage tissue repair.

Methods:
This review evaluates nanoscale techniques used to modify the implant surface for cartilage regeneration.

Results:
The surface of biomaterial is a vital parameter to guide cell adhesion and consequently allow for the formation of ECM and allow for tissue repair. By providing nanosized cues on the surface in the form of a nanotopography or nanosized molecules, allows for better control of cell behaviour and regeneration of cartilage. Chemical, physical and lithography techniques have all been explored for modifying the nanoscale surface of implants to promote chondrocyte adhesion and ECM formation.

Conclusion:
Future studies are needed to further establish the optimal nanoscale modification of implants for cartilage tissue regeneration.
Raw material variability as archaeological tools: Preliminary results from a geochemical study of the basalt vessel workshop at Iron Age Tel Hazor, Israel
Authors: Gluhak Tatjana , Rosenberg Danny , Ebeling Jennie 
Published: January 2017

The discovery of a basalt vessel workshop at Tel Hazor, one of the most important Iron Age sites in the Near East, marks a turning point in our understanding of stone artifact production and distribution during the1st millennium BCE. It offers a rare opportunity to characterize ancient raw material sources, production sites, and study production, trade and distribution systems. The basalt vessel workshop, the only one of its kind in the Levant, produced large quantities of bowl preforms and production waste. To better understand the production and distribution systems behind this specialized production center, in 2011 we initiated a focused geochemical project that concentrated on the products of this unique workshop. We measured the major and trace element composition of 44 unfinished basalt vessels from the workshop and other contexts at Hazor, and can demonstrate that the majority of these objects were derived from one specific, geochemically well-constrained, basaltic rock source. Only a few bowls clearly deviate from this geochemical composition and were produced using raw material from other sources. Thus, we believe that one major quarry existed that supplied the Hazor workshop with the majority of the basaltic raw material. The products from this specific extraction site provide us with a “Hazor reference group” that can be used to test whether or not finished vessels from Hazor and contemporary sites were produced in the Hazor workshop.
Planejamento, estratégia local e complexidade: uma reinterpretação do legado do Projeto Eixo Tamanduatehy (Santo André)
Authors: Klink Jeroen 
Published: January 2017

R e s u m o O artigo problematiza a literatura crítica sobre o Projeto Eixo Tamanduatehy (Santo André) no sentido de enraizá-la na trajetória específica da cidade de Santo André e de contribuir com a reflexão sobre o significado das “experiências reais” de planejamento estratégico urbano no cenário atual da globalização neoliberal. Argumentamos que a ausência de uma leitura de três dimensões entrelaçadas dificultou uma compreensão adequadado legado deste projeto, isto é: (I) a construção política e contestada da escala local, além de seu significado para a disputa de hegemonia sobre a gestão urbana; (II) o planejamento estratégico,a neoliberalização e a emergência de uma representação hegemônica do espaço urbano a partirdo Projeto Eixo Tamanduatehy e (III) planos, projetos estratégicos e a emergência de novos espaços de representação.Palavras-chave Empresariamento urbano; planejamento estratégico; Projeto Eixo Tamanduatehy. A b s t r a c t In this paper the critical literature on the Project Eixo Tamanduatehyis highlighted in a problematic perspective, in the sense of embedding it within the specific trajectory of the city of Santo André, and to contribute with a reflection on the significanceof the “real experiences” of strategic urban planning in the present scenario of neoliberal globalization. Our argument is that the absence of an analysis on three interlinked dimensions has made an adequate understanding of the legacy of this project more difficult, that is: (i)the political and contested nature of scale, besides its significance for the hegemonic disputesover urban management; (ii) strategic planning, neoliberalization and the emergence of ahegemonic representation of urban space on the basis of the Project Eixo Tamanduatehy; and (iii) plans, strategic projects and the emergence of new spaces of representation.Keywords Projeto Eixo Tamanduatehy; strategic planning; urban entrepreneurialism;.
O engenheiro Antônio Bezerra Baltar: prática urbanística, CEPUR e SAGMACS
Authors: Pontual Virgínia 
Published: January 2017

Resumo: A contribuição do engenheiro Antônio Bezerra Baltar para a constituição da prática do urbanismo no Brasil ainda apresenta lacunas historiográficas. A presente narrativa ao seguir a perspectiva da história cultural traz outros aportes à medida que apresenta Baltar não apenas inserido em um cenário local, mas também no nacional e internacional, articulando em instituições suas ideias às suas práticas urbanísticas. Neste sentido é mostrada no presente artigo a sua passagem no Centro de Estudos de Planejamento Urbano e Regional (CEPUR) e na Sociedade de Análise Gráfica e Mecanográfica Aplicada aos Complexos Sociais (SAGMACS). Aborda também a contribuição do padre dominicano francês Louis-Joseph Lebret para a formaçãodo pensamento de Baltar. Em um movimento inverso, indica como a prática urbanística de Baltar contribuiu para o entendimento de Lebret sobre cidade e urbanismo. A interpretação documental das práticas urbanísticas de Baltar situa obras, ideias e instituições que constituíramo campo do urbanismo no Brasil dos anos 1950.Palavras-chave Baltar; CEPUR; estudos urbanos; Lebret; prática urbanística; SAGMACS. Abstract: The contribution of the engineer Antonio Bezerra Baltar to constitutethe practice of urban planning in Brazil still presents historiographical gaps. Following theperspective of cultural history, thi paper shows Baltar not only inserted in the local scene but alsoin the national and international levels, articulating ideas to practices in urban institutions: atthe Centro de Estudos de Planejamento Urbano e Regional (CEPUR) and Sociedade de Análise Gráfica e Mecanográfica Aplicada aos Complexos Sociais (SAGMACS). The paper discuss thecontribution of the French Dominican priest Louis-Joseph Lebret for the formation of Baltar’sthought, and in a reverse movement, indicates how the urban practice of Baltar contributed forthe understanding of Lebret on town planning. The interpretation of the documents of urbanpractices of Baltar reveals works, ideas and institutions that constitute the field of urbanism inBrazil in the 1950’s.Keywords: Baltar; CEPUR; Lebret; SAGMACS; urban practice; urban studies.
Dilemas estructurales del norte argentino: un enfoque estilizado de tres complejos agroindustriales de la region
Authors: Gorenstein Silvia , Schorr Martín , Soler Gonzalo 
Published: January 2017

Resumen: El presente artículo busca recuperar algunos de los “viejos” temas deldebate regional resurgidos ante la actual fase expansiva de actividades intensivas en recursosnaturales en el Norte de Argentina. Paralelamente, se desarrollan nuevas lógicas de produccióny circulación de bienes asociadas a este ciclo de reprimarización, redefiniendo y profundizando las barreras territoriales que traban la diversificación productiva y el desarrollo. Estas rupturasy continuidades son analizadas a partir de evidencias recientes registradas en tres complejos agroindustriales : los de tabaco y yerba mate, los de larga y arraigada tradición en la región,y el de la soja, de reciente difusión en el marco de proceso expansivo del modelo de producción típico de la pampa húmeda.Palabras clave: Cambio tecnológico; complejos agroindustriales; crecimientoy desarrollo regional; impacto socio territorial. Abstract: The aim of this article is to recover some of the “old” issues of theregional debate that have emerged as a result of the current upturn of natural intensiveresources activities in Northern Argentina. At the same time, the developement of new logics of production and circulation of goods are associated with this reprimary cycle, redefining and making deeper the territorial barriers that lock the productive diversification and development.This interruptions and continuities are analyzed trough recent evidences recorded in three agroindustrial complexes: tobacco and yerba mate’s, with long and established tradition in theregion, and soybeans, with recent spreading under the expansive process of the typical humidpampas production model.Keywords: Agroindustrial complex; growth and regional development; socialand territorial impact; technological change.
Desenvolvimento, região e poder regional: a visão de Celso Furtado
Authors: Tavares Hermes Magalhães 
Published: January 2017

Um dos mais importantes economistas brasileiros e o de maior projeção fora do Brasil, Celso Furtado, deixou uma obra significativa sobre a economia brasileira e latino-americana. Ocupou-se ao mesmo tempo da questão regional, especialmente do Nordeste brasileiro. O nosso objetivo é tratar da evolução da economia brasileira sob o prisma do desenvolvimento das regiões do país, na visão de Furtado. Esse tema foi abordado pelo autor, principalmente em duas de suas obras, que focamos particularmente: ‘Formação econômica do Brasil’ e ‘Uma política para o desenvolvimento do Nordeste’ (GTDN). Buscamos na obra desse autor e em sua visão macroeconômica e macroespacial uma contribuição para que se possa estabelecer um contraponto com a abordagem hoje prevalecente, ancorada no desenvolvimento local. Palavras-chave: Celso Furtado; desenvolvimento regional; poder regional; Nordeste; Brasil. Abstract: One of the most important Brazilian economists and the most proeminent outside the country, Celso Furtado left an expressive work about Brazilian and Latin-American economy. He also emphasized the study of Regional issues, particularly on the Northeast of Brazil. This paper addresses the relationship between the Brazilian economic evolution and the development of the country’s different regions according to Furtado’s ideas. This subject was approached by the author, especially in two of his works: “Formação econômica do Brasil” (Brazilian economic Formation) and “Uma Política para o desenvolvimento do Nordeste” (A policy for the Northeast development). We sought in his works and macroeconomic and macrospatial’s vision a contribution to establish a counterpoint to the local development current approach. Keywords: Celso Furtado; regional development; regional power; Northeastern Brazil.
Estrategias de acceso al suelo y a la vivienda en barrios populares del Área Metropolitana de Buenos Aires
Authors: Di Virgilio María Mercedes , Mejica María Soledad Arqueros , Guevara Tomás 
Published: January 2017

En este trabajo se investiga la producción social de los asentamientos y barrios populares ubicados en el Área Metropolitana de Buenos Aires. Describe los procesos de integración, la urbanización y la consolidación de los distritos e investiga las trayectorias familiares y estrategias de acceso a la tierra y a la vivienda. Busca también las conexiones entre dos escalas geográficas de análisis: por un lado, los cambios en el barrio y en el lote y, por otro, los cambios en la vivienda. El estudio se realizó en cuatro distritos de la región metropolitana. La investigación de los procesos de producción de hábitat se basó en una encuesta realizada en 2008, y la selección de casos de estudio en profundidad se hizo de acuerdo con los criterios de significación adoptados. Palabras clave: producción del hábitat; estrategias; acceso al suelo urbano; hábitat popular; políticas de regularización. Abstract: This paper investigates the social production of settlements and poor neighborhoods in the Metropolitan Area of Buenos Aires. The processes of urbanization, integration and consolidation of the districts are described and family trajectories and strategies to access land and housing are investigated. The analysis looks for the connections between two geographical scales: on one hand, the changes in the neighborhood and in the lot, and on the other, the changes in housing. The study was conducted in four districts of the metropolitan region. The investigation of the processes of habitat production was based on a survey conducted in 2008, and the selection of cases for study in depth was made according to criteria of significance. Keywords: production of habitat; strategies; access to urban land; popular habitat; regularization policies.
Conceitos divergentes para políticas convergentes: descompassos entre a Política Nacional de Habitação e o Programa Minha Casa, Minha Vida
Authors: Nascimento Neto Paulo , Moreira Tomás Antonio , Schussel Zulma Das Graças Lucena 
Published: January 2017

A última década evidenciou uma série de avanços no campo da habitação social no Brasil. Com a formatação da Política Nacional de Habitação (2004), do Sistema Nacional de Habitação (2005), e do Plano Nacional de Habitação (2008), foi construído um modelo consistente de enfrentamento do déficit habitacional brasileiro. A articulação das ações e recursos das diversas esferas de governo e de agentes privados obteve seu ápice com a implementação do Programa Minha Casa, Minha Vida (PMCMV), lançado com a meta de construir um milhão de casas. Partindo do contexto delineado, este artigo busca avaliar o grau de aderência entre a Política Nacional de Habitação e o PMCMV, a fim de discutir suas implicações sobre o panorama habitacional no país. A partir de uma pesquisa bibliográfica e documental, evidencia-se o descompasso teórico-conceitual entre as duas políticas, permitindo especular sobre a prevalência do componente econômico sobre o social. Palavras-chave: política habitacional; Minha Casa, Minha Vida; déficit habitacional; habitação social. Abstract: The last decade revealed a series of achievements in social housing in Brazil. With the National Housing Policy (2004), the National Housing System (2005), and the National Housing Master Plan (2008), a consistent model was built to face Brazilian housing deficit. The articulation between government and private agents obtained its apex with the implementation of the program Minha Casa, Minha Vida (PMCMV), which started with the goal of building a million houses. Based on a bibliographical and documental study, this paper evidences a theoretical and conceptual gap between the two policies, as well as the prevalence of the economic over the social component. Keywords: housing policy; Minha Casa, Minha Vida; housing deficit; social housing.
Mobilidade populacional e um novo significado para as cidades: dispersão urbana e reflexiva na dinâmica regional não metropolitana
Authors: Ojima Ricardo , Marandola Jr. Eduardo 
Published: January 2017

Nas últimas duas décadas, especialmente, a maior novidade no processo de urbanização brasileira não vem das grandes metrópoles, que receberam muita atenção em termos de políticas públicas e sociais, da mídia e de pesquisas acadêmicas desde os anos 1970. O processo de migração rural-urbana de longa distância e a urbanização-industrialização que ajudaram a formar as nossas nove metrópoles clássicas hoje parecem assumir novos contornos. Para realizar tal discussão, partiremos de uma compreensão do papel dos deslocamentos pendulares na urbanização brasileira, explorando os dados mais recentes no que revelam de novidade na última década (especialmente fora das regiões metropolitanas), passando a seguir para uma reflexão sobre suas consequências em termos dos modos de vida e das repercussões na escala do cotidiano urbano, que passa a ter dimensão regional. Palavras-chave: dispersão urbana; deslocamentos pendulares; urbanização; migrações; demografia; região. Abstract: In the last two decades, the biggest news in the urbanization process in Brazil is not within the larger metropolitan areas, who received all the attention in terms of public and social policies, the media and academic research, especially over the 1970s, regarding the process of rural-urban migration and industrialization, which helped form our classic nine metropolitan areas. To accomplish this discussion, we seek to understand the role of commuting in the Brazilian urbanization, exploring what the latest data shows us the novelty in the last decade (especially outside metropolitan areas), passing below for a reflection on its consequences in terms of ways of life and the impact on the scale of everyday urban life, which is replaced by a regional dimension. Keywords: urban sprawl; commuting; urbanization; migration; demography; region.