bluuebunny/crossref_metadata_2025 huggingface dataset:
"La marcha de la bronca” de Miguel Cantilo
Authors: Fiuza Alexandre Felipe , Duarte Geni Rosa
Published: September 2020

Este artigo enfoca a história do músico Miguel Cantilo, expoente do rock argentino, que construiu uma carreira musical com períodos intermitentes de atuação conjunta com Jorge Durietz, formando a dupla Pedro y Pablo; vale lembrar também sua atuação ao lado dos músicos da La Cofradía de la Flor Solar. São conhecidas suas composições, como “Yo vivo en esta ciudad” (1969), “Catalina Bahia” (1971) ou “La Marcha de la bronca” (1970), sendo que a última dá título a este texto, transformada em uma espécie de hino político setentista, vencendo o Segundo Festival de la Música Beat. Miguel Cantilo, além de ser um dos precursores do rock argentino, também vem construindo uma memória sobre o período por meio da literatura. A perseguição ao seu trabalho musical e a falta de perspectivas levou-o ao exílio na Colômbia e na Espanha, o que permite ampliar o foco de análise para além do quadro nacional em que estava inserido. Por fim, analisa-se aqui o percurso trilhado pelo músico e as escolhas estéticas e políticas que deram corpo ao seu cancioneiro.
O disco We Shall Overcome e a propagação de canções pró-direitos civis nos Estados Unidos
Authors: Arantes Mariana Oliveira
Published: September 2020

O presente artigo analisa o disco We Shall Overcome. Songs of the “Freedom Riders” and the “Sit-ins”, gravado em fevereiro de 1961 pela gravadora Folkways, na cidade de Nova Iorque. Com doze canções, sendo sete no lado A e cinco no lado B, interpretadas pelos grupos The Montgomery Gospel Trio e The Nashville Quartet e pelo cantor Guy Carawan, o disco apresenta uma parte do repertório utilizado durante os eventos relacionados ao movimento pelos direitos civis nos Estados Unidos. Nosso objetivo é compreender de que maneira distintas tradições culturais foram mobilizadas e reformuladas a fim de atenderem as demandas do movimento. Por meio da difusão de canções em diferentes suportes, como livros e discos, diversos artistas e mediadores contribuíram para a consolidação e legitimação de um cânon de canções, parte de uma determinada tradição cultural, que foi mobilizado em prol do mais influente movimento social do país.
Contemporary Carioca, de Frederick Moehn
Authors: Baia Silvano Fernandes
Published: September 2020

Nos anos 1990, na Zona Sul do Rio de Janeiro, surgiu uma cena musical com a atuação colaborativa de um grupo de compositores/intérpretes que compartilharam alguns pressupostos estéticos que os distinguiramem relação a outras sonoridades anteriores ou contemporâneas. Entre estes músicos, cariocas ou vindo de outras partes do país, mas vivendo no Rio, que lograram alcançar projeção nacional e tornar-se influentes na sua geração, encontram-se Marcos Suzano, Lenine, Pedro Luiz e a Parede, Fernanda Abreu e Paulinho Moska,cujos trabalhos estão no centro do estudo do etnomusicólogo estadunidense Frederick Moehn, atualmente professor no curso de Música do King’s College London.
Pre-operational Sentinel-3 Snow and Ice (SICE) Products: Algorithm Theoretical Basis Document
Authors: Kokhanovsky Alexander , Box Jason , Vandecrux Baptiste
Published: September 2020

This document describes the theoretical basis of the algorithms used to determine properties of snow and ice from the measurements of the Ocean and Land Color Instrument (OLCI) onboard Sentinel-3 satellites within the Pre-operational Sentinel-3 snow and ice products (SICE) project: http://snow.geus.dk/. The code used for the SICE retrieval and its documentation can be found at https://github.com/GEUS-SICE/pySICE. The algorithms were developed after the work from Kokhanovsky et al. (2018, 2019, 2020).
COVID-19 Infection After a Total Knee Arthroplasty in a Patient with Hemophilia A
Authors: Taranchenko Yuri Lara , Martinez Garcia Fernanda , Benitez-Hidalgo Olga , Aguilar Marc , Massons Josep , Nuñez Jorge H.
Published: September 2020

Case:

Minimal information is available regarding coronavirus disease-19 (COVID-19) patients with hemophilia A. Coagulopathy is a major pathophysiological characteristic of COVID-19; however, because of a paucity of data, it is not clear whether these patients with hemophilia are more or less prone to the severe form of the COVID-19 disease. We report the case of a hemophilic patient with confirmed COVID-19 after total knee arthroplasty.

Conclusion:

This case highlights the idea that patients with a congenital hypocoagulability stated as haemophilia may be protected against COVID-19 hypercoagulability-related adverse effects. Thromboprophylaxis with low–molecular-weight heparin should be evaluated in patients with hemophilia and COVID-19 disease.
The Treatment of Periprosthetic Distal Femoral Fractures After Total Knee Replacement
Authors: Quinzi David A. , Childs Sean , Lipof Jason S. , Soin Sandeep P. , Ricciardi Benjamin F.
Published: September 2020

» Periprosthetic distal femoral fracture after total knee arthroplasty carries substantial morbidity and mortality regardless of fixation technique.

» Surgical treatment is favored in most patients compared with conservative therapy because of high rates of nonunion, malunion, and reoperation after casting or bracing.

» Internal fixation techniques including retrograde intramedullary nailing and locked plating are favored for surgical treatment in most fractures when bone stock in the distal fragment allows for appropriate fixation.

» In the setting of deficient distal femoral bone stock or femoral component loosening, revision arthroplasty with distal femoral replacement is the favored technique.

» Further studies with regard to the use of intramedullary nailing, locked plating, and distal femoral replacement are necessary to refine the indications for each technique and to define the use of combinations of these fixation techniques.
The Legitimacy of Circular Letter in Handling COVID-19 Pandemic
Authors: Disantara Fradhana Putra
Published: September 2020

The purpose of this legal research is to analyze the relevance of the discretion of government officials during the COVID-19 pandemic with the concepts and legislation related to legal issues; as well as analyzing the existence of a Circular to legitimize the handling of COVID-19 with statutory regulations. This legal research is carried out by making an inventory of various primary and secondary legal materials, so as to obtain relevant and critical studies of the legal issues discussed. The results of this legal research are that the discretion made by government officials can be justified legally if it is relevant to several provisions contained in legislation for the realization of good emergency governance; and the existence of a circular letter is legally valid if it is in accordance with the laws and regulations and the General Principles of Good Governance, by understanding that a circular is not a product of rules that are in the order of national legislation. Thus, a circular does not have strong and binding legal legitimacy. Therefore, the researcher recommends the criteria and classification of the parameters of discretion in the form of a circular as outlined in the form of a Supreme Court Regulation. This should be done so that there is no abuse of authority in implementing discretionary power by government officials and general legal principles.
MESLEKİ UYGULAMA BEKLENTİLERİNİN KARİYER MOTİVASYONU ÜZERİNE ETKİSİ: SAĞLIK YÖNETİMİ BÖLÜMÜ ÖĞRENCİLERİNE YÖNELİK BİR ARAŞTIRMA
Authors: ÇALIŞKAN SÖYLEMEZ Şerife , KAYA Ş. Didem
Published: September 2020

Üniversitelerdeki teorik eğitimlerin kalıcı olması ve bu eğitimin gerçek iş yaşamında uygulanabilmesi için mesleki uygulama, öğrencilerin eğitim hayatında önemli bir yer tutmaktadır. Bu nedenle çalışma, mesleki uygulama yapan sağlık yönetimi bölümü öğrencilerinin mesleki uygulama beklentilerini karşılama derecesinin, kariyer motivasyonları üzerindeki etkisini incelemek amacıyla gerçekleştirilmiştir. Araştırmada, 5 üniversitenin mesleki uygulamaya katılan 305 sağlık yönetimi bölümü öğrencisine tanımlayıcı sorular, mesleki uygulama beklentilerini karşılama derecesi ile ilgili sorular ve Kariyer Motivasyonu Ölçeği’nin yer aldığı anket formu uygulanmıştır. Çalışmada örneklem seçimine gidilmeyip çalışma evrenine ulaşılmaya çalışılmıştır. Verilerin analizinde; ortalama, standart sapma, t ve ANOVA testi, faktör analizi, korelasyon ve regresyon analizinden yararlanılmıştır. Mesleki uygulama beklentilerini karşılama derecesi ile cinsiyet, yaş ve öğrenim görülen üniversite değişkenleri karşılaştırıldığında aralarında anlamlı bir fark bulunmuştur (p<0,05). Kariyer motivasyonunun kimlik alt boyutu ile cinsiyet grupları arasında da anlamlı bir fark bulunmuştur (p<0,05). Mesleki uygulama beklentilerini karşılama derecesi ile kariyer motivasyonu arasında “orta düzeyde” (r=0,373; p<0,01) anlamlı ve pozitif bir ilişki saptanmıştır. Mesleki uygulama beklentilerini karşılama derecesi, kariyer motivasyonundaki değişimin %14’ünü açıklamaktadır. Sonuç olarak, öğrencilerin eğitim sürecinde yapmış olduğu mesleki uygulama ile mesleği konusunda bilgi, beceri ve tecrübe kazanımları ve mesleki bakış açısı, onların kariyer hedeflerini ve kariyer planları yapabilmeleri için gereken kariyer motivasyonunu sağlamaktadır.
TÜRKİYE’DEKİ SAĞLIK HİZMETLERİNİN ETKİNLİK VE VERİMLİLİK ANALİZİ: RADYAL VE RADYAL OLMAYAN VZA VE MVE MODELLERİNİN KARŞILAŞTIRMASI
Authors: DİRİK Ceren , SAHİN Serap
Published: September 2020

Ülkelerin sağlık göstergeleriyle gelişmişlik düzeyleri arasında yakın ilişki bulunması, sağlık harcamalarının gayrisafi yurt içi hasıla içindeki payının yüksek olması ve sağlık hizmetlerine olan talebin artması, kaynakların etkin kullanımıyla ilgili endişelerin ortaya çıkmasına neden olmuştur. Hükümetlerin temel hedeflerinden olan etkin çalışan bir sağlık sisteminin oluşturulabilmesi için sağlık hizmetlerinin etkinliğinin ve verimliliğinin sistematik bir şekilde değerlendirilmesi ve etkin çalışmayan alanların saptanarak, iyileştirmelerin yapılması gerekmektedir. Türkiye’deki sağlık hizmetlerinin makro düzeyde ele alındığı bu çalışmada 2016 yılı için il bazında sağlık hizmetlerinin etkinliğinin ölçülmesi ve 2012-2016 dönemi için illerin sağlık hizmetleri verimliliğindeki değişimin saptanarak, radyal ve radyal olmayan Veri Zarflama Analizi (VZA) ve Malmquist Verimlilik Endeksi (MVE) modellerinden elde edilen bulguların karşılaştırmalı olarak incelenmesi amaçlanmıştır. Türkiye’deki iller sosyo-ekonomik gelişmişlik düzeylerine göre üç gruba ayrılmış ve analizler her bir grup için ayrı ayrı gerçekleştirilmiştir. Analiz sonucunda radyal ve radyal olmayan modeller arasında yüksek ve anlamlı ilişki bulunduğu ve yöntemlerin monoton bir şekilde bağlantılı olduğu tespit edilmesine rağmen, aylak değişkenleri ihmal eden radyal modellerin yanıltıcı bulgular ortaya koyduğu gözlemlenmiştir. Ayrıca sağlık hizmetleri etkinliğinin, yüksek gelişmişlik düzeyinde bulunan illerin yer aldığı gruptan düşük gelişmişlik düzeyinde bulunan illerin yer aldığı gruba doğru gidildikçe azaldığı görülmüştür. Bunun yanı sıra, Türkiye’deki sağlık hizmetlerinin üretim teknolojisinde gerileme yaşandığı saptanmıştır.
ÇEVRESEL KUZNETS HİPOTEZİNE KÜRESELLEŞME EKSENLİ YAKLAŞIM: TÜRKİ CUMHURİYETLER ÖRNEĞİ
Authors: MANGA Müge , CENGİZ Orhan
Published: September 2020

Makroekonomi politikalarının odağındaki büyüme eksenli uygulamaların ortaya çıkardığı sorunlara yönelik ilgi son dönemlerde giderek artmıştır. Bu ilginin gerek ekonomik gerekse de siyasal, sosyal ve kültürel unsurlardan hareketle artmasının geri planında yatan dinamiklerin ortaya konulması küreselleşme olgusundan bağımsız bir biçimde ele alınmayı imkânsız hâle getirmektedir. Dolayısıyla, 20. yüzyılın sonlarından itibaren toplumun tüm katmanlarına yayılım gösteren küreselleşme ile birlikte çevresel dengenin değişimine vurgu yapan literatürün öne çıkmaya başladığı görülmektedir. Bu doğrultuda mevcut çalışmada, 1991-2014 dönemine ait verilerle panel ARDL yöntemiyle Türkiye, Azerbaycan, Kazakistan, Kırgızistan, Tacikistan, Türkmenistan ve Özbekistan’dan oluşan Türki Cumhuriyetlerde Çevresel Kuznets hipotezi ekonomik, politik ve sosyal küreselleşme göstergeleri dikkate alınarak test edilmiştir. Elde edilen sonuçlar, ekonomik büyümenin karbon emisyonu üzerindeki negatif yönlü etkisinin yaklaşık olarak kişi başı 2,830$ gelir düzeyinde ortaya çıktığını, sonrasında ise N tipi bir ilişkinin söz konusu olduğunu göstermektedir. Ayrıca analiz bulguları, politik ve sosyal küreselleşmenin karbon emisyonunu azalttığını, ekonomik küreselleşme ve enerji kullanımını ise arttırdığını ortaya koymaktadır.
YAŞLILARA YÖNELİK ŞİDDET: “BEYAZ MELEK” FİLMİ ÖRNEĞİ
Authors: TUNA UYSAL Meyrem , ALTUNAY Zeynep
Published: September 2020

Ataerkil zihniyete sahip toplumlarda yaşlı bireyin aile içinde bakılması ve yaşlıların bakımının aile üyeleri tarafından üstlenilmesi kabul gören bir davranıştır. Ancak köyden kente göçle birlikte toplumun yapısında meydana gelen ekonomik ve sosyo-kültürel değişimler, aile yapısının geniş aile tipinden çekirdek aile tipine doğru dönüşümü, kadının çalışma hayatına katılması, yaşam süresinin uzaması, yaşlı nüfusun artışı gibi nedenler yaşlı bireyin evde bakımını güçleştirmiş ve yaşlı bireylerin bakımı sürecinde huzurevlerine daha fazla ihtiyaç duyulmuştur. Bu süreçte yaşlıların gerek aile üyelerinden gerekse de kurum personelinden şiddet görmeleri söz konusu olabilmiştir. Bu çalışma, ‘Beyaz Melek’ isimli sinema filminde yer alan yaşlıların huzurevinde onların bakımını üstlenen çalışanlar tarafından maruz kaldıkları şiddet sahnelerini değerlendirmeyi amaçlamaktadır. Bu bağlamda “Beyaz Melek” filminin incelenmesinde bir nitel araştırma tekniği olan içerik analizi tercih edilerek yaşlılık ve yaşlıya yönelik şiddetin nasıl ele alındığı çözümlenmeye çalışılmıştır. Çalışma sonucunda huzurevinde kalan yaşlıların mutsuz oldukları, kendi istekleri ile huzurevine yerleşmedikleri ve huzurevinde onların bakımını üstlenen çalışanlar tarafından psikolojik ve fiziksel şiddete maruz kaldıkları görülmüştür.
SİYASAL LİDERLİK VE BİR SİYASAL LİDER OLARAK MUHSİN YAZICIOĞLU
Authors: AKAR Fatma , SAVUT Emre
Published: September 2020

Çalışmanın amacı, siyasi lider Muhsin Yazıcıoğlu’nun liderlik özelliklerini ortaya koymaktır ve çalışma nitel araştırma yöntemi esas alınarak yürütülmüştür. Esas alınan bu yönteme bağlı olarak Muhsin Yazıcıoğlu’nun siyaset içerisinde birlikte yer aldığı, kartopu örnekleme yöntemi ile belirlenen 20 kişi ile nitel araştırma yöntemlerinden biri olan yarı yapılandırılmış görüşme tekniği kullanılarak görüşme yapılmış, bu görüşmelerden elde edilen veriler betimsel analiz yöntemi kullanılarak analiz edilmiştir. Elde edilen bulgular neticesinde Muhsin Yazıcıoğlu’nun siyaset içerisinde yer aldığı dönemlerde sabit ve tek bir liderlik özelliği göstermediği sonucuna ulaşılmıştır. 1980 öncesinde ani ve tek başına karar almasıyla, teşkilata hizmet edenleri değerlendirip, hizmet etmeyenleri görevden almasıyla ağırlıklı olarak otoriter lider özelliklerini yansıttığı görülmüştür. 1980 sonrasında ise istişareye çok önem vermesiyle, çalışma arkadaşlarına karşı dostane davranışlarıyla, güvenilir bir lider olarak nitelendirilmesiyle, ülkücü camia nezdinde olumlu bir imaj yaratmasıyla, çalışma arkadaşlarının onun ideolojisini benimsemesiyle, siyasi başarıdan daha çok insanlara hizmet etmeyi kendine vazife edinmesi sebebiyle daha çok karizmatik, demokratik, paternalist, dönüşümcü ve hizmetkâr lider özelliklerini gösterdiği sonucuna varılmıştır.
A RESEARCH ON THE INTERNAL CONTROL COMPLIANCE ACTION PLANS CREATED BY THE MUNICIPALITIES IN TURKEY IN ACCORDANCE WITH COSO MODEL
Authors: YILMAZ Onur Kemal , KARAKAYA Gencay
Published: September 2020

Within the scope of the study, firstly, conceptual explanations related to the internal control structure, COSO and internal control action plans are made. Afterwards, regarding the research part of the study, population and sample of it is presented. While the population consists of metropolitan municipalities working in the Turkish local government system, the sample consists of metropolitan municipalities that publish internal control compliance action plans on their websites. In this context, while the number of the population is 30, the number of the sample is 16 and the sample representation rate of the population is 53%. Within the scope of the research, the internal control compliance action plans of the municipalities are examined in detail and what actions they take in accordance with the standards are determined on 1264 actions specified in the reports. According to the data obtained as a result of the study, it is observed that the municipalities have developed internal control compliance action plans with standard content in accordance with laws and regulations and planned actions in 79 sub-components. It is concluded that these actions are compatible among municipalities and comply with internal control standards.
"Quem não registra não é dono": o sistema cartorial como representação do patrimonialismo no Brasil
Authors: Teixeira Silva Késia Aparecida , Da Silva Arantes Isabel Critina , Pereira José Roberto
Published: September 2020

A democracia é algo recente no Brasil. Após um longo período de ditadura, o país se consolidou como um Estado democrático e se caracterizou pela notável capacidade de mobilização de diversos setores da sociedade civil, que reivindicaram seu direito de participação política. Todavia, apesar das conquistas rumo à democratização, ainda hoje se observam práticas sociais que deslegitimam a democracia e corroem sua qualidade, como é o caso de algumas instituições, que além da pouca transparência, não representam a diversidade social e econômica e nem sempre estão orientadas por princípios que promovam justiça e direitos ou acesso a bens sociais como saúde e educação. Nesse sentido, os cartórios ferem alguns princípios democráticos ao incorporar características patrimoniais em sua dinâmica de funcionamento. Diante disso, o presente ensaio objetiva discutir sobre a materialização de práticas patrimonialistas no sistema cartorial brasileiro, em um contexto contemporâneo marcado pelo regime democrático. Para tanto, discute-se a democracia e o patrimonialismo no Brasil e busca-se demonstrar de que forma as características patrimoniais estão presentes nas práticas cartoriais. Ao final, evidencia-se que as relações personalistas e a centralização administrativa, oriundas do patrimonialismo encontram-se presentes nos cartórios, o que dificulta a consolidação da democracia em sua totalidade.
Fatores que impactam na qualidade do planejamento orçamentário dos municípios do estado de São Paul
Authors: Speeden Eduardo Andrade , Perez Olivia Cristina
Published: September 2020

O orçamento é um documento central da política governamental, mostrando quais objetivos serão priorizados no ano seguinte e no médio prazo. Este trabalho explora os fatores que influenciam a qualidade do planejamento orçamentário. A pesquisa quantitativa foi baseada no IEGM (Índice de Efetividade da Gestão Municipal) criado pelo TCESP (Tribunal de Contas do Estado de São Paulo) que mede a efetividade do planejamento nos 644 municípios do estado de São Paulo. Constatou-se que quanto maior o município, pior a qualidade de seu planejamento orçamentário. Já o orçamento per capita tem efeito positivo na qualidade do planejamento. Não foi encontrada associação entre a qualidade do planejamento e os seguintes fatores apontados pela literatura: iniciativas de transparência, existência de equipe de planejamento e controle interno formalmente instituído no município. Esses dados apontam para novas descobertas não previstas pela literatura e que ajudam a explicar o sucesso do planejamento orçamentário.
“Acrescentar Anos a Vida e Vida aos Anos Vividos”: Um olhar foucaultiano sobre a gestão da velhice no programa Mais Vida, em Minas Gerais
Authors: Passos Leandro Corrêa , Barreto Raquel Oliveira , Carrieri Alexandre de Pádua
Published: September 2020

O envelhecimento é um fenômeno mundial e no Brasil não é diferente, a projeção é de que 1/3 de brasileiros, em 2060, tenham 60 ou mais anos. A partir da perspectiva foucaltiana da governabilidade e da biopolítica, objetivamos analisar como o Programa Mais Vida se propõe a realizar a gestão da velhice em Minas Gerais. Nos inspiramos na arqueologia de Foucault para propiciar um olhar diferente realizando uma análise da legislação brasileira e, de forma específica, sobre as regulamentações e práticas do programa. Foi possível perceber o desejo que temos de vivermos mais como fio condutor que liga o indivíduo à população que será gerida. A família e a sociedade serão chamadas para cuidar dos seus idosos na busca por eficiência. E logo, o idoso será alvo de uma biopolítica, normatizado, subjetivado, disciplinado e examinado, sendo compelido a se autogerir para manter-se ativo, saudável.
The usefulness of ascorbic acid degradation to analyze the effectiveness of water filtration in household water filter jugs
Authors: Jezierska Karolina , Podraza Wojciech , Sękowska Anna
Published: September 2020

Introduction: This study aimed to determine whether the degradation of ascorbic acid in aqueous solutions could be used to compare the filtration efficiency of various household water filter jugs.

Materials and methods: Based on absorbance measurements of ascorbic acid, a new water quality coefficient (WQC) parameter was defined. Differences between the WQC were determined for 4 different water filters commonly used in household water filter jugs in Poland. In addition, correlations between the WQC, the amount of filtered water (AFW), and a number of other parameters were examined for all 4 filters.

Conclusions: Significant differences were found in WQC among the 4 filters. A decreasing efficiency of calcium ion removal from the water was observed with the ongoing use of all 4 filter cartridges. Overall, this method could be a sensitive, simple, fast, eco-friendly, and relatively inexpensive tool for determining the effectiveness of water purification in household water filter jugs, which of course requires further research.
Colonic necrosis of vague aetiology presenting scarce clinical and radiological symptoms: a case report
Authors: Żyluk Andrzej , Jagielski Wojciech
Published: September 2020

Spontaneous colonic necrosis is very uncommon in a patient without predisposed disorders such as end-stage renal failure in dialysed patients, serious cardiac failure, sepsis, post-traumatic shock, and vascular surgery within an abdominal aorta. This paper presents the case of an elderly patient in whom necrosis of almost the whole colon had occurred within 2 days. At presentation the patient had no clinical symptoms or signs suggesting serious abdominal disease. There was also a lack of biochemical abnormalities and changes in angio-CT. Due to deterioration of the patient’s general condition, he underwent surgery which revealed necrosis of almost the whole colon. The necrotic colon was resected, followed by a terminal ileostomy. Despite the operation, the patient died 2 days after.
Properties and use of rosemary (Rosmarinus officinalis L.)
Authors: Pawłowska Katarzyna , Janda Katarzyna , Jakubczyk Karolina
Published: September 2020

Rosemary (Rosmarinus officinalis L.) is a spice herb found in most cuisines and in many spice blends on the Polish market. It deserves special attention, not only because of its unique taste and smell, but also due to a composition that provides health benefits. Its antimicrobial activity has been proven in relation to bacteria, fungi (including yeast) and viruses. Positive effects on the metabolism of carbohydrates and lipids, and the function of the nervous system, as well as hepatoprotective properties have been demonstrated. The plant itself and the extracts and essential oils obtained from it are used in home cooking, and the cosmetic and food industries. It also finds applications in agriculture as an animal feed additive.

The aim of the work was to review current scientific publications and present the properties and areas of use of rosemary.
Optimizing the Huff ‘n’ Puff Gas Injection Performance in Shale Reservoirs Considering the Uncertainty: A Duvernay Shale Example
Authors: Hamdi Hamidreza , Clarkson Christopher R. , Esmail Ali , Sousa Mario Costa
Published: September 2020

Recent studies have indicated that huff ‘n’ puff (HNP) gas injection has the potential to recover an additional 30 to 70% oil from multifractured horizontal wells in shale reservoirs. Nonetheless, this technique is very sensitive to production constraints and is impacted by uncertainty related to measurement quality (particularly frequency and resolution) and lack of constraining data. In this paper, a Bayesian workflow is provided to optimize the HNP process under uncertainty using a Duvernay shale well as an example.

Compositional simulations are conducted that incorporate a tuned pressure/volume/temperature (PVT) model and a set of measured cyclic injection/compaction pressure-sensitive permeability data. Markov-Chain Monte Carlo (MCMC) is used to estimate the posterior distributions of the model uncertain variables by matching the primary production data. The MCMC process is accelerated by using an accurate proxy model (kriging) that is updated using a highly adaptive sampling algorithm. Gaussian processes are then used to optimize the HNP control variables by maximizing the lower confidence interval (μ-σ) of cumulative oil production (after 10 years) across a fixed ensemble of uncertain variables sampled from posterior distributions.

The uncertain variable space includes several parameters representing reservoir and fracture properties. The posterior distributions for some parameters, such as primary fracture permeability and effective half-length, are narrower, whereas wider distributions are obtained for other parameters. The results indicate that the impact of uncertain variables on HNP performance is nonlinear. Some uncertain variables (such as molecular diffusion) that do not show strong sensitivity during the primary production strongly impact gas injection HNP performance. The results of optimization under uncertainty confirm that the lower confidence interval of cumulative oil production can be maximized by an injection time of approximately 1.5 months, a production time of approximately 2.5 months, and very short soaking times. In addition, a maximum injection rate and a flowing bottomhole pressure around the bubblepoint are required to ensure maximum incremental recovery. Analysis of the objective function surface highlights some other sets of production constraints with competitive results. Finally, the optimal set of production constraints, in combination with an ensemble of uncertain variables, results in a median HNP cumulative oil production that is 30% greater than that for primary production.

The application of a Bayesian framework for optimizing the HNP performance in a real shale reservoir is introduced for the first time. This work provides practical guidelines for the efficient application of advanced techniques for optimization under uncertainty, resulting in better decision making.
Highly Conductive Layers and their Role in the Development of Oil Fields of the Bazhen-Abalak Complex
Authors: Ipatov Andrey Ivanovich , Zhukovskaia Elena Anatolievna , Lazutkin Dmitriy Mikhailovich
Published: September 2020

Modern technology of drilling and construction of horizontal wells allows for effective development of complex oil fields hard-to-recover oil reserves includes off low-permeability (less than 1-2 mD) and hyper-low-permeable (0.01-0.0001mD) fields. The latter in Russia include Bazhen, Domanic and Achimov fields. Their development provides for the mandatory completion of HW with Multiple-Fractured Horizontal Wells (MFHW).

Experience in the development of layers of the specified type for Gazpromneft PJSC shows that the highest oil production rate is achieved if the MFHW system reveals not only the low-permeability rock matrix, but also captures the highly conductive (typically fractured) streaks — "strata-conveyors" (the latter may also be located in neighboring geological and stratigraphic differences). The difference in the permeability of such highly conductive layers and the hyper-low-permeable matrix of the host rocks can be very significant (up to 106!).

In addition to the positive aspects of the presence of highly conductive layers in the section associated with the achievement of high initial oil flow rates in new wells, in the process of further development, negative consequences may arise as a result of premature (even unpredictable) gas and water breakthroughs through narrow fractured layers. Is it possible to take into account the risks of loss of well productivity as a consequence of the pronounced geological heterogeneity of these fields, even if the scale of the impact of this heterogeneity is still difficult to assess by modern research methods?

In this paper analyzes some of the results of core, logging, well testing and indicator studies with the allocation of characteristic features indicating the presence of local highly conductive fractured layers in the section of the oil the Bazhen-Abalak complex (BAC).
Cyclical Gel-Polymer Flooding Technology is an Effective Method of Enhanced Oil Recovery in High-Viscosity Oil Fields
Authors: Lobanova Svetlana Yur’evna , Yelubaev Berdibek Ulanovich , Talamanov Nikolay Evgen’evich , Sun Zhijian , Wang Chunxi , Zhao Bo , Ismagilov Tagir Akhmetsultanovich , Telin Aleksey Geroldovich
Published: September 2020

The issue of increasing reservoirs recovery rate in non-uniform permeable high-viscosity oil reservoirs is considerably challenging, especially when the oil under reservoir conditions manifests its structural-mechanical properties, which is characteristic of the Buzachi North oil field. Its development using water flooding method has demonstrated that even moderate uptake of recoverable reserves is followed by injection water breakthrough to the production wells. As substantiated by the high median permeability quotient with a broad range of values, employment of a regular ("classical") polymer flooding technique for the task of aligning the oil displacement front, when instead of water a weak polymer solution is injected in high volumes (up to 30 % of pore volume), is of similarly low efficiency because of rapid polymer breakthrough to the production wells boreholes through fissures and "super reservoirs". This article presents development and field pilot tests results related to cyclical gel polymer flooding technology as applied under the conditions of the Buzachi North oil field productive reservoirs rich in high-viscosity oils. The technology implies an integral gel polymer action upon water-bearing strata of productive reservoirs via injection wells performed in several stages. During the first stage, fissures are isolated with water-swellable polymers or synthetic resins; during the second stage, profile log is aligned using high-viscosity hydrogels; finally, during the third stage, the oil is displaced with a low-viscosity hydrogel slug based on cross-linked acrylamide polymer. Based on laboratory and field research, optimal linear dimensions (fractions) of water-swellable resins have been selected, along with cross-linkers and their concentrations required to obtain high-viscosity gels under reservoir conditions; the optimal amounts of low-viscosity hydrogels to be injected at the displacement stage have been determined. The parameters of fissures and "super reservoirs" required for estimating the working amounts of injected gels at each stage are evaluated by means of tracer analysis performed immediately prior to the injection cycle start. The tests performed at 16 sites with Jurassic deposits and two sites with Cretaceous deposits of the Buzachi North oil field have demonstrated high technical and economic efficiency of the developed cyclic gel polymer flooding technology.
A Field Pilot Test on CO2 Assisted Steam-Flooding in a Steam-flooded Heavy Oil Reservoir in China
Authors: Qi Zongyao , Liu Tong , Xi Changfeng , Zhang Yunjun , Shen Dehuang , Mu Hertaer , Dong Hong , Zheng Aiping , Yu Kequan , Li Xiuluan , Jiang Youwei , Wang Hongzhuang , Li Huazhou , Babadagli Tayfun
Published: September 2020

It is challenging to enhance heavy oil recovery in the late stages of steam flooding. This challenge is due to the reduced residual oil saturation, the high steam-oil ratio, and the lower profitability. A field test of CO2-assisted steam flooding technology was carried out in the steam-flooded heavy oil reservoir in the J6 block of Xinjiang oil field (China). The field test showed a positive response to the CO2-assisted steam flooding treatment including a gradually increasing heavy oil production, a rise in formation pressure, a decrease in water cut, etc. The production wells in the test area mainly exhibited four types of production dynamics, while some production wells showed production dynamics that were completely different from those during steam flooding. After being flooded by CO2-assisted steam flooding, these wells exhibited a gravity drainage pattern without steam channeling issues, and hence could yield a stable oil production. Meanwhile, emulsified oil, together with CO2-foam, was observed to be produced in the production well, which agreed well with what was observed in the lab-scale tests. The reservoir-simulation-based prediction in the test reservoir shows that the CO2-assisted steam flooding technology can reduce the steam-oil ratio from 12 m3 (CWE)/t to 6 m3 (CWE)/t and yield a final recovery factor of 70%.
Selection Method of Activator for Indigenous Energized Microorganisms in Daqing Oilfield with Low Permeability Reservoirs
Authors: Zhou Xiaofeng , Gayubov Abdumalik Talat , Le Shihao , Yang Ying
Published: September 2020

In recent years, microbial enhanced oil recovery methods have been systematically applied in the Daqing oilfield in order to stimulate and increase oil production, remaining difficult to be recovered after polymer flooding. In this paper, a selection method of activator for indigenous energized microorganisms in Daqing oilfield with low permeability reservoirs was proposed.

Firstly, the number of microorganisms in samples taken from production and injection wells in the target block was measured. Based on the obtained results, the condition for the use of MEOR method in the studied well system was determined. Secondly, laboratory experiments were conducted on the culture of indigenous microorganisms and the optimal parameters of the activator for indigenous microorganisms was determined by the obtained experiment results. Thirdly, the concentration of indigenous microorganisms, the pH value, interfacial tension, the viscosity change of the crude oil and the amount of generated gas after the hydrocarbons metabolization were measured. Based on the values of the crude oil viscosity and the amount of generated gas, the optimal ratio of nutrients (glucose and corn steep liquor) that are part of the activator for indigenous microorganisms was determined.

The experimental results showed that when the ratio of nutrients (glucose and corn liquor) is equal to 1:2, the viscosity of the crude oil after the activation is minimal and the amount of generated gas after the hydrocarbons metabolization reaches the maximum value. The selected activator composition was used to culture indigenous microorganisms in samples taken from production wells in the studied well system. The pressure increase was observed due to the occurrence of biogas during the process of hydrocarbon degradation by microorganisms. In the further development of the Daqing field with low permeability reservoirs using microbiological methods, it is recommended to use the selected activator composition for the culture of indigenous microorganisms.
Integrated Approach Enabled Successful Delivery of the Longest Well on Odoptu-More Field for Russian National Oil Company
Authors: Shakhova Anna , Lebedeva Irina , Valshin Oleg , Famiev Robert , Marushkin Dmitry , Savinov Roman , Dementyev Alexander , Shatilov Alexey , Khakov Almaz , Shakirova Anastasia , Gaskov Dmitriy , Bochkarev Vladimir , Surmin Vladimir
Published: September 2020

This paper provides the results of the application of integrated approach to drill the longest extended reach well which has ever been drilled in Odoptu-more field (North Dome) in Sakhalin.

Although many extended reach drilling (ERD) wells have been already drilled by the operator in Odoptu-more field, extreme reach wells always require new solutions. Reaching remote reservoirs by applying standard well design of Odoptu-more field was not possible due to high standpipe pressure (SPP) and equivalent circulating density (ECD) in 8 ½-in production section. Engineering study resulted in partial upsize of a well design and change 9 5/8-in casing to liner followed by remaining challenges: 9 5/8-in liner could not be delivered to required depth due to string buckling.

Several key technical solutions were implemented in the project thus allowing to deliver the longest well accident-free. Those solutions included well design modification allowing to drill 8 ½-in production section to reach remote reservoirs and 9 5/8-in liner delivery to the required depth using "mud over air" flotation technique for the first time in the project.

Having applied integrated approach, the project team broke a new record in drilling the longest well at Odoptu-more field with total measured depth 8699m, ERD ratio 4.89 and Directional Difficulty Index (DDI) of 7.6 (Alistair W. Oag 2000).

Drilling extreme reach ERD well unlocked opportunities for the operator to reach and put into the production more distant offshore oil-bearing reservoirs from the land rig without changing existing pad facilities.
First Expandable Liner Hanger for Gas-Condensate well in Jurassic Formation, West Siberia
Authors: Klychkov Yevgeniy , Biryukova Maria , Lobanov Sergey , Pedraza Juan Camilo , Glebov Yevgeniy , Shokarev Ivan , Rudoy Viktor , Davletov Renat , Zorin Andrey
Published: September 2020

In the first quarter of 2019, a system of two gas-tight expandable liner hangers was successfully deployed for the first time in gas-condensate wells in the Jurassic formation, West Siberia, for the company NOVATEK-YURKHAROVNEFTEGAS LLC. The main operation was performed in the YG-2 reservoir of Middle Jurassic deposits associated with high-pressure gas condensate formation. The work was divided in two main stages and an additional run of the seal assembly (stinger) with an anchor-type locator.

Stage I, included the installation of a cemented gas-tight expandable liner hanger in open hole with alternative to rotate, reciprocate during running or cementing operations.

Stage II, included running of an additional expandable liner hanger (ELH) assembly, in combination with open hole hydraulic packers and multi-stage fracturing sleeves into the horizontal section. An additional stage included seal assembly deployment with the tubing production string to provide for successful stimulation of the production flow using multi-stage frac (MSF) with the subsequent transfer of the well to the operation stage.
15 in 1. Experience Utilization to Construct Multilateral Well with 15 Lateral Branches
Authors: Levanov Igor , Sirotin Denis , Levin Ilya , Efimov Roman , Lukyantseva Ekatarina , Oparin Ivan , Sultanov Ruslan , Grinchenko Vasiliy , Gorbov Alexander , Galitskiy Ivan , Nikitenko Igor
Published: September 2020

This paper is a description of the approach to the construction of technologically complex and unique well with horizontal completion of 15 branches, the first in Russia and Eastern Siberia. The experience of multilateral technology (MLT) wells application along with detailed well planning and training of the involved personnel made it possible to cope with all challenges and to achieve record technological indicators.

Project issues:

High abrasive formations of the reservoir; VSS due to borehole enlargements and interbedding/stringers occurrence. High alternating bending moments during fishbone wells construction. Abnormal low formation pressure. Difficulties in fracture gradient prediction. Lack of reservoir pressure compensation in gas-oil-water zone (GOWZ) is a cause of mud loses. Extensive loads to the drill string.

The main of the trial project was to confirm the possibility of 15-branches MLT well drilling in the geological conditions of the region.
Efficiency Application of a Reactive Multi-Component System for Mud Loss Control in the Timano-Pechora Region
Authors: Nechaikin Anton , Morozova Anastasia , Sekacheva Yulia , Musabirov Ildar
Published: September 2020

In the Timano-Pechora Region, the drilling of the 178 mm hole for the production casing in horizontal wells is often accompanied by challenges attributed to mud losses in thief zones. These challenges may not be overcome by application of conventional lost circulation materials (LCMs), often resulting in the abandonment of the parent wellbore and re-drilling of the section. A reactive multi-component system was proposed to the operator as an alternative solution to control mud losses while drilling this section and assist in reducing the well construction costs and duration.

The multi-component reactive system has been developed as a combination with an oil-based fluid used to support reactions with water-based fluids in the well, regardless of the mud chemistry. When the oil-based composition contacts water-based fluids, it forms a coagulated, moldable substance that plugs off the mud loss channels in the near-wellbore zone. The substance does not ingress further into the matrix or fractures and, therefore, it does not provide any negative impact on the permeable zone of the reservoir.

Prior to implementing the multi-component reactive system, the drilling of the 220.7 mm section used to be accompanied by mud losses as high as 100 m3/h. Two pilot operations utilizing this system demonstrated reduction of mud losses by 100%, thus allowing timely drilling of the 220.7 mm sections within the schedule. Furthermore, the 178 mm casing strings were run to TD with successful cementing, and without the need to sidetrack. The estimated time savings from application of the multi-component reactive system was 20% in comparison with the previously drilled four wells.

The new technology helped the operator achieve success in preventing mud losses during well drilling, and removed the need for wellbore re-drilling. As the system may be pumped directly through the BHA, this provides additional time savings in not having to trip out of the hole. Based on the results of the pilot operations, this technology has demonstrated its advantages for solving lost circulation issues while drilling in target intervals. This paper addresses the application of the multi-component reactive system to resolve the lost circulation problem.
Case of Physical Fields Application to Accelerate Oil Preprocessing
Authors: Dengaev Alexey Viktorovich , Verbitsky Vladimir Sergeevich , Getalov Andrey Alexandrovich , Sargin Boris Viktorovich , Grekhov Ivan Viktorovich , Bogdanov Alexander Vladimirovich , Tarasevich Sergei Alekseevich
Published: September 2020

The separation of water-oil emulsions in the fields is considered to be a significant part of the costs associated with the production and transportation of the produced fluid. This is mainly connected to the use of chemical reagents (demulsifiers), which accelerate the process of the emulsion separation. The paper proposes a technological solution regarding the method of microdosing of demulsifier, which allows to reduce the concentration of the reagent input and, most importantly, to reduce the volume of the intermediate layer within the process of field oil processing. The proposed device is based on the use of ultrasonic vibrations.

In the laboratory, and later in the field conditions, the tests had been conducted to determine separation efficiency depending on the type of emulsions, oil viscosity, temperature, emitter power and the availability of a demulsifier, etc.

The obtained results make it some possible to reduce the volume of used demulsifiers, as well as increase the efficiency of oil processing.
Metal-Polymer Coiled Tubing
Authors: Grogulenko Vladimir Viktor
Published: September 2020

Metal-polymer coiled tubing (MCT) are flexible pipes based on a copolymer reinforced with steel tape, wires and ropes. During the research was proposed and justified eleven constructions of MCT with twenty options of overall dimensions. Next, mathematical modeling of the actual stress conditions of MCT in standard operations during the overhaul of wells was carried out, as well as calculations of the strength of the MCT. The result was the identification of most promising options for the implementation of MCT, as well as the proposed area of their implementation. In addition, have been introduced coefficients for rational selection of most effective MCT structure for a specific well operation from both a technical and economic point of view. The scientific and technical novelty of metal-polymer coiled tubing is confirmed by Patent for an invention, as well as the results of a thorough analysis of patenting of coiled tubing devices. Application of MCT fully meets the challenges of the modern fuel and energy complex of the Russian Federation in the direction of creating modern and safe technologies for offshore fields (including Arctic fields), as well as within the framework of the import substitution policy implemented in our country. Production of proposed metal-polymer coiled tubing can be organized in a full cycle at domestic enterprises, as well as all components of MCT are also produced in our country. This statement was confirmed when creating prototypes of pipes in a volume of 3000 meters. If ongoing laboratory tests of metal-polymer coiled tubing will be finished with positive results, then will be carried out pilot implementation of the proposed pipes in one of the domestic oilfield services companies. The timing of implementation this idea will be minimal, since significant costs are not required for the re-equipment of factory facilities for the manufacture of the proposed MCT. At the same time, final cost of manufacturing MCT on average, according to research results, is on 50 – 100 percent lower than the cost of a GT-70 steel coiled tubing manufactured by Global Tubing USA of similar dimensions. It is worth noting that the MCT, as well as the steel coiled tubing pipe, fully meets all environmental safety requirements, and that is why its use on offshore projects (where environmental friendliness is one of the main requirements for implemented technologies) is considered the most probable. As for increasing labor productivity, initially coiled tubing is an advanced industry with a high technological level. Application of metal-polymer coiled tubing as an alternative to steel coiled tubing in certain well operations will increase the number of hoisting operations for one pipe, which will increase its service life, and will also help to optimize financial costs of relocating equipment.