bluuebunny/crossref_metadata_2025_split huggingface dataset:
Análise de práticas em profissões relacionais
Authors: Araújo-Oliveira Anderson , Chouinard Isabelle 
Published: June 2018

Résumé: Le 20 mars 2012, l’Équipe de recherche et d’analyse des pratiques professionnelles (ERAPP) fut reconnue comme groupe de recherche en émergence par la Commission des études de l’Université du Québec en Abitibi-Témiscamingue (UQAT). Instaurée par deux professeurs nouvellement engagés au sein de l’institution, Anderson Araújo-Oliveira (UER en sciences de l’éducation, maintenant professeur à l’UQAM) et Isabelle Chouinard (UER en sciences du développement humain et social), l’Équipe aura comme principaux objectifs le développement de la recherche interdisciplinaire sur les pratiques professionnelles, ainsi que la formation de la relève scientifique à l’UQAT. Porteuse d’une vision élargie des pratiques professionnelles, l’Équipe regroupera des chercheurs provenant de différents départements de l’UQAT et d’autres universités québécoises et internationales. Pour mener à bien sa mission, l’ERAPP développe depuis cinq ans une programmation scientifique articulée autour de deux aspects principaux : 1) la production significative de nouvelles connaissances ainsi que leur diffusion dans la communauté scientifique et académique de même qu’auprès des acteurs sur le terrain; 2) la formation scientifique d’étudiants des cycles supérieurs en vue de développer chez ces derniers les compétences nécessaires à la réalisation de leurs travaux de recherche. Le présent article propose de mettre en évidence, en premier lieu, les objectifs et les lignes directrices qui sous‑tendent les activités de recherche menées par les chercheurs associés à l’ERAPP et, en deuxième lieu, certaines des activités développées qui permettent l'opérationnalisation de ces objectifs et lignes directrices.
Mots-clés: pratiques professionnelles, métiers relationnels, production et diffusion des savoirs, formation de futurs chercheurs
Merkezsizleştirme Becerisini Değerlendirme: Yaşantılar Ölçeğinin Türkçe Formunun Psikometrik Özellikleri
Authors: ÜNLÜ KAYNAKÇI Fatma Zehra 
Published: June 2018

Bu çalışmada, bilinçli
farkındalığa dayalı yaklaşımların ortak unsuru olarak görülen merkezsizleştirme
becerisini ölçen Yaşantılar Ölçeğinin
(Fresco ve diğ., 2007) Türkçeye uyarlamasının yapılması amaçlanmıştır.
Katlımcılar, Ankara’da bir devlet üniversitesinde okumakta olan 363 üniversite
öğrencisinden (251 kadın, 112 erkek) oluşmaktadır. Yaşantılar Ölçeğinin tek faktörlü
yapısını test etmek için Doğrulayıcı Faktör Analizi (DFA) yapılmıştır. DFA bulguları,
ölçeğin tek faktörlü yapısının doğrulandığını göstermiştir (Satorra-Bentler χ2/df = 3.05 (p &lt; .001), RMSEA = .07, NNFI = .93, CFI = .94, SRMR = .06, NFI = .92 ). Yaşantılar Ölçeğinin, merkezsizleştirme boyutunun Cronbach-α
katsayısı .80 olarak bulunmuştur. Ayrıca ölçeğin ölçüt bağıntılı geçerliğini test etmek için Ruminasyon Ölçeği Kısa Formu
(Treynor, Gonzealez ve Nolen-Hoeksama, 2003) ve Yaşantılar Ölçeği –
Merkezsizleştirme arasındaki ilişki 620 üniversite öğrencisinin katılımıyla
incelenmiştir. Ruminasyon ve merkezsizleştirme arasında negatif yönde anlamlı
ilişki bulunmuştur. Sonuç olarak, üniversite öğrencilerinin katılımı ile gerçekleştirilen bu çalışmada
Yaşantılar Ölçeği - Merkezsizleştirme Türkçe formunun geçerli ve güvenilir bir
ölçme aracı olduğuna dair bulgular elde edilmiştir. Elde edilen
bulgular, alan yazın ışığında tartışılmıştır.
Discitis in Adults
Authors: Shenoy Kartik , Singla Amit , Krystal Jonathan D. , Razi Afshin E. , Kim Yong H. , Sharan Alok D. 
Published: June 2018

* Discitis is a bacterial infection of the intervertebral disc that is commonly caused by direct inoculation from surgery or hematogenous seeding.* Rapid diagnosis and treatment are essential to preserve spinal stability and neurological function.* Discitis is usually treated nonoperatively with antibiotics. However, when surgical intervention is indicated, debridement and intervertebral fusion are often performed to promote healing, limit neurological impairment, and restore spinal stability.
Water Performance in Toe-Point Injection Wellbores at Supercritical State
Authors: Sun Fengrui , Yao Yuedong , Li Guozhen , Zhao Lin , Liu Hao , Li Xiangfang 
Published: June 2018

Abstract
Most of the previous works were focused on the saturated/superheated steam flow in wellbores coupled with conventional single-tubing injection method. With the rapid development of technology. Supercritical water coupled with toe-point injection technique is proposed.
Compared with conventional method, supercritical water could heat the reservoir to a higher temperature, obtain a larger heated radius, and obtain a higher thermal cracking efficiency etc. Besides, toe-point alternating heel-point injection could release the phenomenon of unequal absorption of steam when the horizontal wellbore is extremely long or the reservoir is of serious heterogeneity.
This paper presents a model for estimating thermal properties of supercritical water along the inner tubing (IT) and annuli in the horizontal section of the wellbores with toe-point injection technique. Firstly, a flow model in wellbores is proposed based on the mass, energy and momentum conservation equations. Secondly, coupled with flow model in reservoir, a comprehensive mathematical model is proposed. Thirdly, type curves of supercritical water flow in horizontal wellbores with toe-point injection technique is obtained by finite difference method on space and iteration technique. Finally, sensitivity analysis is conducted.
Results show that: (a) supercritical water temperature decreases rapidly from heel-point to toe-point in IT. The temperature decrease rate near toe-point of wellbores becomes smaller. (b) The larger the pressure difference, the larger the mass injection rate from annuli to oil layer. (c) When the mass injection rate is small, heat loss from fluid to reservoir plays an important role on temperature drop. (d) When the injection rate is high enough, the effect of heat loss on temperature drop becomes weak. (e) The pressure of supercritical water at a certain place in IT or annuli decreases with injection rate.
Alternate Imbalance Operating-Pressure Process Improving SAGD Performance of Foamy Extra-Heavy Oil Reservoirs in the Eastern Orinoco Belt, Venezuela
Authors: Yang Zhaopeng , Li Xingmin , Chen Heping , Liu Zhangcong , Luo Yanyan , Fang Lichun 
Published: June 2018

Abstract
The foamy extra-heavy oil reservoirs in the eastern Orinoco Belt, Venezuela with high initial dissolved gas oil ratio and flow ability in situ, have been exploited by the Cold Heavy Oil Production (CHOP) method, with recovery of only 8%-12% OOIP. SAGD has proved to be one of commercially active post-CHOP processes. Whereas during the SAGD process the dissolved gas as non-condensable gas accumulated at the edges of the steam chamber causes a resistance to heat transfer between steam and oil, thus slowing down growth of the steam chamber and oil recovery. Therefore a novel SAGD process using alternate imbalance operating-pressure (AIOP-SAGD) is studied for the purpose of improving foamy oil SAGD performance.
The novel SAGD process involves multi SAGD well pairs, and with the growth of steam chambers, a significant pressure gradient is deliberately created between two steam injection wells. Moreover the higher and lower operation pressure of the two injection wells is periodically alternate. In this work, the potential evaluation and optimization of foamy oil AIOP-SAGD are studied, through extensive simulations utilizing a sector model, which is from a sector with representative oil and reservoir characteristics of Eastern Orinoco Belt, considering the mechanism of foamy oil and thermal recovery.
Simulation results indicate that the AIOP-SAGD process shows significant improvement in oil recovery, at least 10% higher than traditional SAGD. The mechanism includes two aspects: firstly the pressure gradient between two adjacent SAGD well pairs brings a sweep of dissolved gas from steam chambers; secondly, based on the flow ability of foamy extra-heavy oil, the pressure gradient helps to exploit oil between two SAGD pairs which is typically difficult to be recovered with conventional SAGD. The optimization of operating parameters shows that the optimal start time of AIOP-SAGD is when the oil rate of SAGD reaches the peak and the steam chamber extends to the top of the reservoir. High steam quality helps improve the performance of AIOP-SAGD. Moreover the parameters of alternate time, imbalance time, imbalance pressure difference were optimized.
Formation Damage Characterization of Horizontal Well in Extra-Heavy Oil Reservoir and Methods of Remedy
Authors: Liu Zhangcong , Chen Changchun , Lv Xue , Yang Zhaopeng , Shen Yang , Luo Yanyan , Li Xingmin 
Published: June 2018

Abstract
Primary production using horizontal wells has been successfully applied in extra-heavy oil reservoirs, heavy oil belt, Orinoco, Venezuela. During drilling period, formation damage due to drilling fluid invasion lowers the effective permeability around the well, leads to higher pressure drop and has detrimental impact on well productivity in such pressure depleted reservoirs.
In this study, laboratory experiments of drilling fluid invasion are conducted to identify damage mechanism. The oil sample used in the test is taken from Block J, Orinoco Belt and the formation temperature is restored in the lab to mimic the process of drilling fluid mixing with crude oil in horizontal drilling. The stable emulsion is formed by mixing the crude oil with drilling fluid in different proportions. Furthermore, damage level is quantified by well test interpretation. Skin factor, wellbore storage and other formation parameters are estimated by deconvolution method based on three build-ups. Finally, acid washing and well bottomhole electric heating, two methods of remedy are applied in oilfield.
Experiment results show that low productivity of the horizontal wells is due to the presence of highly viscous emulsion system stabilized by large amount of calcium carbonate in drilling fluid. The emulsion system restricts reservoir fluid flowing from the formation to the slotted liner. In Block J, constrained by the operational problems, the effective shut-in time is commonly short. Conventional well test method can hardly give the reliable results. Compared with the conventional method, deconvolution method can solve the data limitation, minimize the initial distortion caused by wellbore storage and get more reliable results. The production can be improved temporarily after the acid washing while declines rapidly. Electric heating can obviously improve the oil mobility near wellbore and maintain stable production.
This paper combines both lab studies and well test interpretation to characterize the formation damage, provides guidance for the remedial operations to improve well productivity.
EUR Prediction for Unconventional Reservoirs: State of the Art and Field Case
Authors: Mahmoud Omar , Ibrahim Mazher , Pieprzica Chester , Larsen Shane 
Published: June 2018

Abstract
Forecasting future production and estimating ultimate recovery (EUR) in supertight reservoirs and shale plays has long been problematic. Developing a reliable and more accurate production forecast have always been a main goal of any petroleum operation. Effectively assessing the reservoir volume and well producing life is instrumental for creation of development scenarios and strategies to maximize the value to the company. Different models have been introduced and used for reserves estimation and production forecast of unconventional reservoirs. This work is intended to review and compare the methods and models currently used in the industry.
Reserves estimation is a process that is constantly updated during the life of a reservoir. Its accuracy depends on the amount of data available and the method of forecast. Analytical models or rate transient analysis (RTA) methods are widely used for history matching and production forecast of unconventional reservoirs. Numerical simulation is also used for estimating ultimate recovery. Different relations have been introduced to model the rate/time behavior in unconventional plays as an alternative to the Arps’ decline curve analysis to address shortcomings when matching production history. Modified hyperbolic decline, power-law exponential decline (PLED), stretched-exponential decline (SEPD), Duong's method, and logistic-growth model (LGM) are developed for forecasting the production in shale reservoirs, but all are based on empirical observations of a particular scenario.
In this study, different methods of history matching the production of hydraulically fractured unconventional reservoirs were investigated by forecasting future production and predicting EUR's to quantify the differences between them. The traditional Arps’ decline for low permeability reservoirs over-forecasts reserves. PLED, SEPD, LGM, and Duong's method were intended to represent the character of rate/time production data for the standard well completion in a multiple-fractured horizontal well in a shale play. These methods provide different forecasts as they have different equation forms. Unfortunately, all of them are not satisfactorily sufficient to forecast production for all unconventional reservoirs. The RTA analytical models required certain modifications of the reservoir and fracture parameters to provide optimistic EUR when compared to the numerical simulation.
Different methods for forecasting unconventional well data have been reviewed and compared in this work based on the production forecast and EUR prediction. Field case production data has been used to reveal the accuracy of the models, the similarity of reserves estimation, and the relationship to the reservoir theory.
An investigation into the Combination of Cyclic Steam Stimulation and Cyclic CO2 Stimulation for Heavy Oil Recovery in Trinidad and Tobago
Authors: Bobb Janos , Hosein Raffie 
Published: June 2018

Abstract
More than four billion barrels of heavy oil remain in the oil fields of Trinidad. If these oil fields are exploited, the country's total oil production can increase significantly. However, heavy oil is difficult to produce, due to its high viscosity, and only a small fraction is recovered after primary recovery. Therefore, it is necessary to implement enhanced oil recovery (EOR) techniques to increase heavy oil production. Two of the most commonly used EOR techniques are cyclic steam stimulation (CSS) and cyclic CO2 stimulation (CCO2S). These processes have a long history of successful heavy oil recovery in Trinidad and Tobago when applied individually. However, very little research was found regarding the combination of both processes which was the basis for this study
A test reservoir, located in the southern basin on land Trinidad was selected and a computer simulation model was built, using the Computer Modelling Group (CMG) software to determine the production analysis. Sand, structure and pay maps were obtained and digitized, using the Didger Five software and then uploaded into the CMG software. Reservoir properties and production data were also uploaded. Wells were then added to the model at the exact location indicated on the structure map. Simulations were conducted using varying injection rates, slug size and soak times for CSS, CCO2S and combined CSS and CCO2S to determine optimal EOR performance and production.
The combination of CSS and CCO2S show an increase in recovery by 8.6% and to be profitable at oil prices higher than USD 14/bbl. It is also best used as a first step for other enhanced oil recovery techniques to further increase recovery. In addition, the results show that 8 out of 17 wells were more responsive to CSS and CCO2S when applied individually than when combined.
Bio-Oil Dispersants Effectiveness on AsphalteneSludge During Carbonate Acidizing Treatment
Authors: Alrashidi Hessah , Farid Ibrahim Ahmed , Nasr-El-Din Hisham 
Published: June 2018

Abstract
Matrix acidizing is a remedial well stimulation that done to overcome formation damage near wellbore or improve the permeability. Although acidizing treatments are proven and abundant there is still inherit from formation damage when pumped. Acid-induced asphaltene sludging is becoming an increasing cause of oil well stimulation Failure.
The objective of the paper is to evaluate the performance of coconut oil as a bio-oil dispersant against commercial dispersants in preventing asphaltene sludge while acidizing carbonate cores with 15 wt.% HCl and a chelating agent. A Kuwaiti crude oil was used in this study has an API of 38° and 2% asphaltene content. The crude oil was characterized by a variety of analytical techniques including total acid and base numbers (TAN, TBN), saturates, aromatics, resins and asphaltene analysis (SARA), density, viscosity and elemental analysis. Indiana limestone cores were used with average porosity of 16% and permeability ranges (9-13) md. X-ray diffraction (XRD) was used to analyze the mineral and clay content in the cores. Sludge tests were used to examine the acid and oil compatibility using anaging cell under 500 psi and 160°F with oil to an acid ratio of 1:1. Coreflooding experiments under reservoir condition were done with the selected two acid systems, 15 wt. % HCl and achelating agent. Indiana limestone cores with a permeability of 7-12 md were initially saturated with the crude oil then acid was injected until breakthrough. The injected acid volume was recorded and CT-scan imaging of the cores after the acid treatment was used to evaluate the structure and the propagation of the wormhole. The effluent fluids were analyzed by inductively coupled plasma (ICP) and pH measurements.
The results for a Kuwaiti crude oil showed the formation of 13 wt% sludge with 15 wt% HCl and it increased to 19 and 30 wt% with increasing acid concentrations to 20 and 28 wt%, respectively. The presence of iron(III) in the system increased the sludge precipitation to 17.8 wt% at 15 wt% HCl and 3,000 ppm iron concentration. The sludging decreased to 7.5 wt% by adding 300 ppm coconut oil to the system. The formation of asphaltene sludge in the carbonate acidizing retards the wormhole propagation. Hence, the injected acid volume to the breakthrough decreased from 1 to 0.4 by adding 300 ppm coconut oil to the acid system. A conical wormhole was formed with the injection of 15 wt% HCl, comparing to a uniform wormhole in the presence of coconut on the acid system. In the case of stimulating the cores with achelating agent (20 wt% GLDA), the coconut oil exceeds the expectations with the minimum pore volume needed to breakthrough compared to the GLDA alone or with the chemical dispersant B.
This study concluded that the use of dispersant can help reduce the asphaltene sludge and create better acid propagation through the core. The results can be employed to design the optimum acid formulation and create the desired wormhole in carbonate formations.
Re-Evaluating Contributions from Thin Bedded Reservoirs: Integrated Reservoir Modelling of the Greater Dolphin Area
Authors: Ryan Damien , Crooks-Smith Nwenna , Nurafza Peyman , Ogiste Candice , Calvert Stefan 
Published: June 2018

Abstract
The Dolphin Field has been producing gas since 1996, however predicting in place volumes, reserves and forecasting production has been a challenge since field inception. The fact that in place estimates have increased significantly since development sanction highlights that a range of geophysical, geological and petrophysical uncertainties are associated with the field. Historically, static volumes have been smaller than dynamic volumes estimated from material balance. The explanation of this difference traditionally related to uncertainty in contact depth (given the minimal data on contacts), that adversely caused poor predictions of water production in the historical models.
Many of the reservoir units within the Greater Dolphin Area (GDA) are characterised by a heterolithic deltaic succession of centimeter scale very-fine sandstone, siltstone and mudstone. Given the thin-bedded nature of the reservoir, conventional wireline-logging tools lack the resolution to accurately resolve many of the static parameters including water saturation. However, based on the available PLT data, it is believed that these thin-bedded intervals generally contribute to the production from the wells and hence to the fluid flow in the reservoir.
A new static and dynamic reservoir model of the GDA has been built that integrates and incorporates new seismic interpretation, petrophysical recharacterization, revised geological and reservoir engineering concepts, and eventually history matching to production data. A key component of this new model build has been integrated modelling iterations amongst different disciplines from new petrophysical interpretations through to dynamic simulation. Initial iterations used a conventional formation evaluation method and resulted in simulations that showed accelerated pressure drops (compared to production data) as a result of failure to capture flow from thin-beded intervals. An alternative petrophysical methodology that aims to better estimate water saturation within thin bedded intervals has been incorporated into a new workflow to account for the thin bed volumes. The new thin bed simulation model results in greater gas contributions from the thin-bedded intervals and helps overcome the historical shortage of static volumes required to achieve a pressure match.
The Upper Cretaceous of Trinidad, is there an Unconventional Source Rock Play?
Authors: Archie Curtis 
Published: June 2018

Abstract
To date Trinidad has produced close to three billion barrels of oil from onshore and offshore fields. Formations penetrated range in age from the Lower Cretaceous to the Pleistocene.
Ninety three wells have been drilled to the Cretaceous with varying degrees of success, these wells have identified whether source rock facies are present or absent across the island. Based on well and outcrop data, the Upper Cretaceous interval is shale dominated with occasional turbidite sandstone reservoirs and a siliceous mudstone locally known as "Argilline".
Geochemical research by Kuarsingh (1986), Rodrigues (1987, 1988, 1993), Talukdar et al (1990), Requejo (1991), Persad et al (1993), Requejo et al (1994), Baseline/DGSI (2004) indicated that most of the hydrocarbons in Trinidad have been sourced from Type II kerogens contained in Cenomanian-Santonian and Aptian aged marine shales of the Naparima Hill and Gautier Formations respectively, Maastrichtian and Tertiary sediments are dominated by mainly woody and coaly kerogens. Total Organic Contents range from 0.1 to +\- 9%.
Rodrigues (1989) mapped the distribution of geothermal gradients identifying hot and cold areas, this data has implications for petroleum systems modeling, especially for the timing and top of the oil generating window.
Royalty Lease Evaluation (RLE) analysis of oils produced from Upper Cretaceous sandstone and naturally fractured intervals (Specific gravity / API, viscosity, % Sulphur, % of products by distillation) give clues to the origin and history of these oils.
Integration of these results and data can result in identification of areas with potentials unconventional source rock plays.