bluuebunny/crossref_metadata_2025_split huggingface dataset:
Banken und Insolvenz - eine internationale Betrachtung
Authors: Paulus Christoph G. 
Published: October 2015

Abstract
Das in diesem Beitrag thematisierte Spannungsverhältnis weist Inhaltsübersicht zwei Seiten auf: einmal die Insolvenz des Kunden der Bank und zum anderen die Insolvenz der Bank selbst. Letzteres wird literarisch wenig erörtert - und noch weniger seine internationalen Implikationen. Das ist deswegen verwunderlich, weil der Europäische esetzgeher jüngst erst eine Richtlinie eigens zur Regelung von Insolvenzen von Banken geschaffen hat, die gegenüber der ungleich bekannteren und häufig behandelten Europäischen Insolvenzverordnung entscheidende Abweichungen des zugrunde liegenden Regelungsmodells aufweist. Anhand einiger exemplarischer Ausgangsfragen des nationalen Rechts werden diese Abweichungen dargestellt und auf ihre wechselseitige Anpassungsfähigkeit überprüft.
Grandes complejos turísticos de la globalización, el caso de Marina de Cope, Murcia
Authors: Cortijo-Pardo Javier 
Published: October 2015

<p>El proyecto de urbanización turística Marina de Cope (Murcia, España), con 60.000 plazas hoteleras y residenciales, ofrece la posibilidad de analizar la relación entre estructura urbana y sociedad en el contexto de la globalización. Como instrumento de análisis, se proponen ocho preguntas sociológicas que, aplicadas al caso, permiten concluir que responde a un diseño urbano segregador, que evita la complejidad social, basado en una forma periférica de la economía globalizada y con un impacto socioambiental insuficientemente evaluado. </p>
Debates sobre conservación y áreas naturales protegidas: paradigmas consolidados y nuevos horizontes
Authors: D'Amico María Paula 
Published: October 2015

<p>Este artículo analiza de manera sucinta las discusiones teóricas centrales sobre la conservación de la naturaleza en áreas naturales protegidas. En un escenario de expansión y diversificación de los mecanismos destinados a proteger la naturaleza, dicha estrategia se destaca debido a su carácter precursor y a la magnitud e intensidad de sus alcances territoriales. En primer término, se abordan los paradigmas consolidados en torno a la conservación. Por un lado, el modelo autoritario o estricto, que defiende la idea de parques y reservas sin presencia humana. Por el otro, la conservación comunitaria sostiene que los objetivos ambientales pueden alcanzarse sin expulsar a las comunidades o personas que habitan espacios protegidos. Sin desconocer las consecuencias disímiles que cada uno implica, ambos dejan traslucir un carácter moral sobre el cuidado de la naturaleza y las diferencias quedan reducidas a cuestiones de gestión. Tendiente a ampliar el horizonte de análisis, se recuperan contribuciones teóricas que sitúan y explican la conservación y sus mecanismos en el marco del capitalismo y se interesan por desentrañar las características y dinámicas que asume en la actual fase neoliberal. Así, se trata de un hecho social que condensa una diversidad de intereses antes que sólo una preocupación por el cuidado de la naturaleza.</p>
El agua fluye hacia el turista
Authors: Navas Grettel 
Published: October 2015

<p>La creciente demanda de agua potable para abastecer la industria hotelera en la costa pacífica costarricense ha llevado al sector turismo a buscar fuentes cada vez más alejadas, ocasionando tensión e incertidumbre en las comunidades locales por una futura escasez. Bajo un marco teórico de Ecología Política y Justicia Ambiental, este artículo caracteriza tres conflictos suscitados por el turismo residencial e inmobiliario en la provincia de Guanacaste, Costa Rica: Lorena (1998), Sardinal (2006) y Potrero (2014). En los tres casos, las comunidades utilizan la judicialización del conflicto como estrategia para asegurar su derecho al agua potable y a un ambiente sano. Se concluye que si bien hay un aparente éxito, los escenarios de conflictividad continúan latentes y se recomienda una revisión profunda del modelo turístico que se está implementando. Las revisiones propuestas incluyen: la participación de las comunidades locales en la toma de decisiones relacionadas al agua, información libre y previa con los actores locales y una clasificación sobre los usos del agua con criterios y prioridades. </p>
Segmentación y posicionamiento de los servicios microfinancieros en Colombia: un estudio comparativo en la industria
Authors: Garcia Carvajal Santiago 
Published: October 2015

<p>Este artículo propone un análisis del consumidor microfinanciero en Colombia a partir de su adaptación al entorno que presenta la industria con base en definiciones básicas: la visión original denominada alivio a la pobreza, representada generalmente por la Cumbre de microcrédito y Yunus con su banco Grameen; y la segunda visión denominada minimalista, representada por actores como el cgap (Consultative Group to Assist the Poor), usaid (Agencia de Estados Unidos para el Desarrollo Internacional), ACCION International y la Universidad del Estado de Ohio, entre otros.<br />Para el Análisis del Comportamiento se llevó a cabo un Análisis Factorial a fin de determinar segmentos de mercado en función de su tamaño y composición. Finalmente, se analizó el sistema afectivo-cognoscitivo del consumidor<br />microfinanciero por medio de escalamiento multidimensional con el propósito de obtener el mapa perceptual de los consumidores.<br />Palabras clave: administración de portafolio, estrategia, mercadeo bancario, microfinanzas.</p>
Redes neuronales artificiales en la producción de tecnología
Authors: Coello Blanco Lenniet , Casas Laura , Pérez González Olga Lidia , Caballero Mota Yailé 
Published: October 2015

<p align="LEFT"> <span style="font-size: medium;">La presente investigación surgió para resolver el déficit de promoción en la asignatura de álgebra lineal de los estudiantes de las carreras de ciencias técnicas de la Educación Superior. La solución se basó en incorporar redes neuronales artificiales como tecnología educativa para apoyar al estudiante durante su estudio independiente, acumulando conocimiento y simulando el rol de un profesor. Este artículo ofrece una guía que comprende tres etapas para aquellas personas que deseen desarrollar sistemas inteligentes basados en redes neuronales artificiales para dicha asignatura </span></p>
El examen del Icfes –Saber 11– y la prueba de entrada como predictores del aprendizaje de los estudiantes de primer semestre de psicología de una universidad privada de Bogotá
Authors: Pardo Adames Carlos Antonio , Cabarcas Acosta Karen 
Published: October 2015

<p align="LEFT"> <span style="font-size: medium;">Es una tradición en Colombia que las Instituciones de Educación Superior utilicen diversos procesos para el ingreso de los estudiantes a sus programas y el de mayor uso es el Examen de Estado Saber 11, requisito obligatorio como elemento de admisión. Igualmente, éstas utilizan pruebas diseñadas por las instituciones como un elemento adicional de ingreso. Este estudio plantea la pregunta de si estas pruebas en realidad constituyen buen material para incluirlas como parte determinante del ingreso de estudiantes o si su utilidad es restringida y es mejor utilizar otros mecanismos complementarios. Los resultados indican que ambas pruebas se relacionan en forma significativa con el resultado del aprendizaje de los estudiantes medido a través de las notas obtenidas durante el primer semestre, aunque la prueba Saber 11 tiene una relación negativa. El porcentaje de varianza explicado por las pruebas de entrada es 27%, lo que implica que sería pertinente ampliar el alcance del estudio e incluir otras variables potencialmente relacionadas </span></p>
First Fishbone Well Drilling at Vankorskoe Field
Authors: Bazitov M. V. , Golovko I. S. , Konosov D. A. , Mingazov A. N. , Nigmatullin R. R. , Lokot A. V. , Malyasov V. Y. 
Published: October 2015

Abstract
A horizontal well in Vankor oil field, Russia, was drilled with a multilateral fishbone shape to increase production. This type of drilling, in which branches (ribs) are drilled into a single layer from the main horizontal section, increases the reservoir drainage area over that covered by single-bore horizontal wells.
In recent decades, rotary steerable systems (RSS) have been actively used by the Russian oil industry to drill elongated horizontal wells in sweet formation zones. This strategy is possible because of the development and availability of RSS technology in the oil and gas industry and is financially feasible because the production rate of horizontal wells is greater than that vertical wells. The Vankor is one of the largest oil fields in Russia. Since 2009, advanced RSS technologies have been successfully used in this field to develop reservoirs by drilling horizontal holes with length ranges from 300 to 1000m. One of the three major formations in this field is the Cretaceous Nizhnekhet 1 formation, with a thickness of approximately 1 to 2 meters. It is the thinnest reservoir formation in the field, and it exhibits the lowest recovery rate against the two other major reservoirs. The fishbone drilling strategy was adopted by the operator to improve the single-well production rate from the Nizhnekhet 1 formation. Given the geological conditions, the main significant challenge is to place ribs from the horizontal hole in a narrow drilling tunnel 1 m above and 1 m below the trajectory.
In December, 2014 the first fishbone well in the Vankor field was drilled. The well plan called for drilling a multilateral well with nine additional branches from the main horizontal borehole. Technologies applied during drilling included control of the trajectory with geologically oriented drilling and openhole sidetracking. A multifunctional team of drilling engineers and geologists from the operator and the service company successfully placed the branches within the 2-m thick reservoir. In early production results, the fishbone well showed two times higher production compared to a single-bore horizontal well.
Implementation of lessons learned from this first fishbone well in Vankor field will create new approach to multiplying the productivity of horizontal wells coming through involvement in the development of additional volumes of oil in rocks with low productivity and also, by increasing the area of interaction with the productive part of the reservoir within the same horizontal wells.
Development and Field Testing of the Downhole Multi-Purpose Thrusting Device for Drilling of Deep Vertical and Directional Wells
Authors: Buslaev George V. , Belkin Alexander S. 
Published: October 2015

Abstract
The article uses results of a 5- year research of a hydraulic thruster used to create a constant weight-on-bit and impact load to free stuck pipe in deep and directional wells including horizontal wells too. The main distinguished feature of the device is its multifunctionality determined by its structural design and sufficient stroke length of the sliding shaft. The proposed solutions will compensate axial vibrations and resonance in the drill string as well. The article explains the necessity of using hydraulic thruster for extended reach and horizontal wells. Formulas expression and research results of dynamic impact load change is demonstrated for different accelerations during pulling out when using thruster to free stuck pipe. The strength of material and testing requirements are specified. Development and field testing methodology and results are described as well.
The First Experience of Rod-Shaped Proppant Implementation in Western Siberia Oil Fields
Authors: Valiullin Albert , Makienko Vladimir , Overin Alexander , Yudin Alexey , Gromovenko Alexander 
Published: October 2015

Abstract
The most efficient way of production enhancement is the hydraulic fracturing which has proven efficient in majority of the fields in Western Siberia and over the world. Despite wide stimulation experience in the Siberian region there are still some unresolved issues. One is the proppant flowback, a root cause of well equipment damage and also reduction in conductivity of the fracture itself.
One of the ways to prevent the problem is the usage of resin-coated proppant (RCP). However there is a disadvantage of this method - agglomeration of polymeric material reduces fracture conductivity in the near-wellbore area. Since 2013 a pilot campaign with the usage of rod-shaped proppant has started in a region. This unique product has two main advantages over a classical spherical proppant: enhanced conductivity of a proppant pack and inherited proppant flow back prevention. Due to the rod-shaped form of the particles, pack has improved stability. Comparison of conductivity tests for different proppants shows that rod-shaped proppant outperforms conventional ones typically used in the region. This also leads to better fluid and polymer recovery and results in increased effective fracture length, hence in substantial production enhancement.
There are 9 oil fields near Langepas a city in Khanty-Mansiysk district. These oil fields are at the latest stage of development: decreasing production rates and recovery of the most part of resources. Drilling has shifted to edge zones of the reservoirs and wells start-up is challenging due to low production rates (small net pays and low values of permeability and porosity). At the moment rod-shaped proppant has been successfully implemented in 4 wells on Jurassic and Achimov formation and the first positive results have been obtained - no proppant flow-backs detected and wells productivity enhanced by 20%.
Detailed results of the first project with rod-shaped proppant application in Western Siberia (Russia), including a comprehensive analysis of well production performance, are covered in this paper.
Investigation of Downhole Jet Pump Unit for Dual Completion of Two and More Reservoirs
Authors: Tumanyan Kh. A. , Plyev A. M. , Kovalevsky S. A. , Korneev A. A. 
Published: October 2015

Abstract
Nowadays the most part of remaining reserves of the largest oilfields is referred to the category of the tight ones, which is economically unprofitable. To make the removal of oil more complete it is necessary to involve all the existing objects into the elaboration in the context of one well. This fact has caused great interest to the technology of simultaneous-separate operation of two or three objects.
The dual completion is a new step in the increased adaptability and efficiency of oil field development.
At present different schemes and equipment for the parallel scheme technology of the dual completion are being actively invented. In this regard the use of the parallel scheme technology of the dual completion with the help of a jet and pump unit seems to be actual.
The constructions of jet and pump units working according to the scheme of parallel connection of two layers are known. However, the lack of special technique of selection of two jet and pump units makes the application of this scheme very limited. As a result of the work a new mathematical model and technique of calculation jet pumps has been invented.
In the framework of the presented research a new program "Jet and pump unit for the technology of the multi-level oil and gas recovery" has been worked out. This program allows making recalculation mode of pump equipment in conditions of changing formation parameters.
Development of Methodology for Determining the Lateral and Vertical Extension of Technogenic Fractures Based On Production and Common Well Log Data for One of the Fields In Western Siberia
Authors: Semenov A. A. , Makarova E. S. , Ishmuratov I. F. , Komova P. Yu. 
Published: October 2015

Abstract
To continue effective development requiring alteration of waterflood system and reduction of risks associated with infill sidetrack drilling of UV1 formation of Varingskoe oil field in Western Siberia, which is characterized by high water cut and presence of confirmed technogenic fracturing we developed a procedure using analysis of production and well-log data for identification of technogenic fracture zones and their lateral and vertical extent.
The analysis of lateral technogenic fracturing distribution is based on a method of statistical evaluation of injection wells influence on production wells rates using Spearman rank correlation. According to the analysis and the results of additionally performed tracer injection test and special core analysis determining the principal stress axes on core samples we determined zones in which technogenic fracturing substantially adds to water cut of producing wells and principal directions in which fracturing takes place for each producing well.
To assess the confinement of technogenic fractures to any reservoir interval we compared wells which have tight impermeable layers within productive strata and ones that lack them with fractures identified statistically.
Using statistical analysis we identified for each production well the direction of fracture propagation with qualitative assessment of intensity of fracture role in fluid flow in that direction, with the preferred orientation being subparallel to low-amplitude tectonic faults coinciding with the principal directions of the stress tensor determined on core samples.
A joint analysis of technogenic fracture map and distribution of tight non-permeable layers within producing intervals allowed to determine a strong correlation (central northern part of the reservoir) between the lack of these tight layers and low Spearman rank correlation coefficient, which indirectly points to the relation between tight, conductive layers (as a result of plastic deformation and subsequent fracturing) and high fluid flow rates.
Analysis of production data using this algorithm helps in determination of lateral and vertical fracture distribution for subsequent analysis and alteration of waterflooding system as well as correction of injection profile, risk reduction in determination of remaining mobile oil reserves areas and planning of new wells based on realistic fluid flow models.
Integrated Petrophysical Approach to Evaluation of Fracturing in the Eastern Siberia Riphean Deposits
Authors: Shchetinina Natalia , Malshakov Alexey , Khabarov Alexey , Grinchenko Vasiliy 
Published: October 2015

Abstract
In recent years most of the world oil and gas companies focus increasingly greater attention on studying unconventional reservoirs, to which the rocks with secondary porosity can be justly related. The paper presents an integrated interdisciplinary approach, which combines the analysis of overall geological, geophysical, and production information to identify fractured zones and predict their distribution in the formation. The interpretation of formation micro-images, full-wave sonic log, mud log, production log, and core data is combined with well test data for the most effective evaluation of near-wellbore fracturing.
Based on core data it was found that vugs predominantly develop in fractures, and the mineral composition of rocks was defined more accurately. The algorithms for determination of mineral composition and porosity based on well log data were proposed.
As a result, in correlation with seismic data, the complex approach was developed to fractures identification in well sections and their distribution in the interwell space.
Some specific features of hydrocarbons and water distribution in rock were revealed. Main types of fractures (background and feathering) were determined. The method for determination and prediction of general background fractures was presented. It was found that shale volume (Vsh) and bed thickness are the main geological factors, which control the density of background fracturing. It was determined that the intensity of feathering fractures regularly increases towards faults. The qualitative classification of fractures by the level of reliability of their identification was developed, and the comprehensive approach to the estimation of zones with different productivity was proposed. The geological 3D model was generated, which reflects probable zones of fracturing.
The paper, for the first time for the Eastern Siberia Riphean deposits, confirms the suggestion that the matrix pores of Riphean deposits in N field are predominantly occupied with residual water, whereas the reserves are concentrated in vugs and fractures. The criteria of reliability of fractured zones identification were drafted.
Core Flow Models For Analysis Of Laboratory Tests On Parameters For WAG Simulations: A Case Study From R. Trebs Oil Field
Authors: Gimazov A. A. , Russkikh K. G. , Murinov K. Yu. , Savichev V. I. , Makatrov A. K. , Emchenko O. V. , Zainullin A. V. 
Published: October 2015

Abstract
The paper presents the workflow for planning, conducting and analyzing core laboratory experiments with the help of dynamic simulations to estimate the parameters required for adequate and robust modeling of water and gas injection at R. Trebsa oil field. At the stage of planning the physical processes which take place in a reservoir when oil is displaced by a mixture of water and gas are given special consideration with the objective to obtain strict and one-valued definition of the missing parameters required for modeling by calibrating the core flow simulation to the experimental data. The findings were used to determine relative permeabilities under miscible displacement, to adjust relative permeabilities under immiscible displacement and to estimate the parameters of hysteresis and three-phase flow.
Contact Determination, Fluid Typing and Deliverability Estimation in North Caspian Appraisal Wells
Authors: Blinov V. , Weinheber P. , Vasilyev D. , Ivashin M. , Shtun S. , Samoylenko A. , Ganichev D. , Tereschuk A. , Alexeev I. 
Published: October 2015

Abstract
This paper presents a comprehensive example of wireline formation tester and drillstem tester data that offers insight to compare and contrast the information that can be delivered by these two similar but different technologies. The dataset presented here consists of logs, WFT and DST data from two North Caspian wells penetrating Cretaceous and Jurassic layers. The log data is used to initially predict fluid types and contacts. This is later verified with WFT data. This combined answer is then used to design a well test program to extract maximum data for development planning. Data is also used to defend the booking of reserves before state committees.
Difficult reservoir conditions including complex mineralogy and varying and unknown water salinity can make fluid typing and contact determination from wireline logs alone to be problematic. By incorporating WFT downhole fluid analysis data ambiguities in the petrophysical interpretation can be resolved and the results from the continuous log measurements can be calibrated by the sparser WFT dataset. Mobility information from WFT data is also used to calibrate log-derived permeabilities and this is used appropriately plan the DST program. Finally data from the DST program, including rates, fluid types and fluid properties are reconciled with the corresponding WFT data.