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Enhancing production monitoring: A back allocation methodology to estimate well flow rates and assist well test scheduling

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Petroleum Research 2024年第3期9卷 369-379页

作者： g.s.chaves V.J.M.Ferreira Filho Universidade Federal Do Rio de Janeiro Brazil

Production flow rates are crucial to make operational decisions,monitor,manage,and optimize oil and gas *** rates also have a financial importance to correctly allocate production to fiscal purposes required by regulatory agencies or to allocate production in fields owned by multiple *** its significance,usually only the total field production is measured in real time,which requires an alternative way to estimate wells'*** address these challenges,this work presents a back allocation methodology that leverages real-time instrumentation,simulations,algorithms,and mathe-matical programming modeling to enhance well monitoring and assist in well test *** methodology comprises four modules:simulation,classification,error calculation,and *** modules work together to characterize the flowline,wellbore,and reservoir,verify simulation outputs,minimize errors,and calculate flow rates while honoring the total platform flow *** well status generated through the classification module provides valuable information about the current condition of each well(*** the well is deviating from the latest well test parameters),aiding in decision-making for well testing scheduling and *** effectiveness of the methodology is demonstrated through its application to a representative offshore oil field with 14 producing wells and two years of daily production *** results highlight the robustness of the methodology in properly classifying the wells and obtaining flow rates that honor the total platform flow ***,the methodology supports well test scheduling and provides reliable indicators for well *** uti-lizing real-time data and advanced modeling techniques,this methodology enhances production monitoring and facilitates informed operational decision-making in the oil and gas industry.

关键词： Production estimation Real-time production Production monitoring Back allocation Well test scheduling Flow rate estimation

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sm-Nd systematics of metaultramafic-mafic rocks from the Arroio grande Ophiolite(Brazil): Insights on the evolution of the south Adamastor paleo-ocean

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geoscience Frontiers 2020年第6期11卷 2287-2296页

作者： Rodrigo chaves Ramos Edinei Koester Daniel Triboli Vieira Programa de Pòs-graduação Em geociências Instituto de GeociênciasUniversidade Federal Do Rio Grande Do Sul.PO Box 1500191501-970Porto AlegreRSBrazil Departamento de geologia Universidade Federal Do Rio Grande Do Sul.Bento Gonçalves Avenue950091540-000Porto AlegreRSBrazil

In this contribution we present new insights on the evolution of the Dom Feliciano Belt,southernmost Mantiqueira Province,integrating new whole-rock sm-Nd isotopic data for the Arroio grande Ophiolite(Punta del Este Terrane,Brazil/Uruguay border)with previously published bulk-rock and isotope geochemistry of the south Adamastor paleo-ocean metamafic rocks located in Uruguay(Paso del Dragon Complex,Punta del Este Terrane)and Namibia(Chameis subterrane,Marmora Terrane,gariep Belt).For the regional geology,the new data corroborate previous hypothesis and demonstrate the depleted mantle features of the amphibolites and metagabbros of the studied *** Arroio grande Ophiolite rocks are compared with its Uruguayan and Namibian counterparts,demonstrating their isotopic and geochemical similarities and differences,and the backarc affinity of the south Adamastor *** MORB-affinity amphibolites from the Arroio grande Ophiolite-Paso del Dragon Complex are,so far,the most juvenile rocks in the eastern sector of the Dom Feliciano Belt,yielding εNd(640)Ma)between+7.3 and+9,and high 147sm/144Nd(>0.169)and 143Nd/144Nd(640 Ma)ratios(0.51219-0.51229).The south Adamastor is interpreted in this paper as an internal back-arc ocean,with limited lateral extension,opened at around 750-650 Ma as the result of the closure of the older Charrua-goianide paleoocean during the Brasiliano/Pan-African orogenic cycle and final configuration of the West gondwana paleocontinent.

关键词： West gondwana Brasiliano orogenic cycle Adamastor ocean

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A Long-Range generalized Predictive Control Algorithm for a DFIg Based Wind Energy system

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IEEE/CAA Journal of Automatica sinica 2019年第5期6卷 1209-1219页

作者： J.s.solis-chaves Lucas L.Rodrigues C.M.Rocha-Osorio Alfeu J.sguarezi Filho the Department of Energy Engineering at the Federal University of ABC-UFABC Santo AndreSPBrazil

This paper presents a new Long-range generalized predictive controller in the synchronous reference frame for a wind energy system doubly-fed induction generator based. This controller uses the state space equations that consider the rotor current and voltage as state and control variables, to execute the predictive control action. Therefore, the model of the plant must be transformed into two discrete transference functions, by means of an auto-regressive moving average model, in order to attain a discrete and decoupled controller, which makes it possible to treat it as two independent single-input single-output systems instead of a magnetic coupled multiple-input multiple-output system. For achieving that, a direct power control strategy is used, based on the past and future rotor currents and voltages estimation. The algorithm evaluates the rotor current predictors for a defined prediction horizon and computes the new rotor voltages that must be injected to controlling the stator active and reactive powers. To evaluate the controller performance, some simulations were made using Matlab/simulink. Experimental tests were carried out with a small-scale prototype assuming normal operating conditions with constant and variable wind speed profiles. Finally, some conclusions respect to the dynamic performance of this new controller are summarized.

关键词： Direct power control doubly-fed induction generator flux oriented control generalized predictive control long-range predictive control wind energy systems

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Performance of aerogel as a thermal insulation material towards a sustainable design of residential buildings for tropical climates in Nigeria

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Energy and Built Environment 2022年第3期3卷 291-315页

作者： Aminu Wali Bashir Brenda chaves Coelho Leite Departamento de Engenharia de Construção Civil Escola Politécnica da Universidade de São PauloSão Paulo 05508-010Brasil

The building sector accounts for nearly 40%of global energy *** Nigeria,more than two-thirds of the consumption comes from residential *** efficiency measures through the adoption of insulation materials are tools that could crash the peak demand of energy in buildings while improving its thermal comfort and aerogel is considered as the most effective material for insulation,owing to its unique thermal *** this paper,we present the performance of aerogel as a thermal insulation material towards a sustainable design of residential buildings for tropical climates in ***,a typical residential building in the tropical region was modeled with conventional materials utilized in the region and was later modified through the application of aerogel material on various surfaces of the model.A whole building energy simulation was then carried out in each variation and the outcome was compared to effectively conclude on the significance of aerogel in terms of thermal comfort improvement and energy consumption *** show that aerogel had the highest influence when inserted in the attic and floor slabs of the designed model.A reduction of more than 6%was attained in the recorded indoor mean air and operative temperatures while still maintaining an acceptable humidity *** energy consumption,a reduction of more than 15%was ***,the high price of aerogel may hinder its application on the studied building but could be a good investment where climate change and sustainability are of high importance and less concern is given to *** demonstrated significant potential with respect to both thermal comfort improvement and energy consumption reduction on the designed *** outcome of the study is hoped to serve as a base reference for the insulation of residential buildings with similar climate and characteristics to the adopted case building.

关键词： Aerogels Building energy consumption Energy efficiency Thermal insulation materials Thermal comfort Building energy simulation

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Checking procalcitonin suitability for prognosis and antimicrobial therapy monitoring in burn patients

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Burns & Trauma 2018年第1期6卷 39-48页

作者： Luís Cabral Vera Afreixo Rita Meireles Miguel Vaz Catarina chaves Marisa Caetano Luís Almeida JoséArtur Paiva Department of Plastic surgery and Burns Unit Unidade de QueimadosCoimbra University Hospital Centre(CHUC)Av.Bissaya Barreto s/n3000-075 CoimbraPortugal Autonomous section of Health sciences(sACs) University of AveiroAveiroPortugal CIDMA-Center for Research and Development in Mathematics and Applications iBiMEDInstitute for BiomedicineUniversity of AveiroAveiroPortugal Clinical Pathology Department Coimbra University Hospital Centre(CHUC)CoimbraPortugal Pharmacy Department Coimbra University Hospital Centre(CHUC)CoimbraPortugal MedinUP Department of Pharmacology and TherapeuticsFaculty of MedicineUniversity of PortoPortoPortugal Department of Emergency and Intensive Care Medicine Centro Hospitalar Sao JoaoPortoPortugal Faculty of Medicine University of PortoGrupo de Infeccao e SépsisPortoPortugal.

Background: Due to greater infection susceptibility, sepsis is the main cause of death in burn patients. Quick diagnosis and patient stratification, early and appropriated antimicrobial therapy, and focus control are crucial for patients’survival. On the other hand, superfluous extension of therapy is associated with adverse events and arousal of microbial resistance. The use of biomarkers, necessarily coupled with close clinical examination, may predict outcomes, stratifying patients who need more intensive care, and monitor the efficacy of antimicrobial therapy, allowing faster de-escalation or stop, reducing the development of resistance and possibly the financial burden, without increasing mortality. The aim of this work is to check the suitability of procalcitonin (PCT) to fulfill these goals in a large sample of septic burn patients. Methods: One hundred and one patients, with 15% or more of total body surface area (TBsA) burned, admitted from January 2011 to December 2014 at Coimbra Burns Unit (CBU), in Portugal were included in the sample. All patients had a diagnosis of sepsis, according to the American Burn Association (ABA) criteria. The sample was factored by survival (68 survivors and 33 non-survivors). The maximum value of PCT in each day was used for statistical analysis. Data were summarized by location measures (mean, median, minimum, maximum, quartiles) and dispersion measures (standard error and range measures). statistical analysis was performed with sPss?23.0 IBM? for Windows?. Results: There were statistically significant differences between PCT levels of patients from the survivor and non-survivor groups during the first and the last weeks of hospitalization as well as during the first week after sepsis suspicion, being slightly higher during this period. During the first 7 days of antimicrobial therapy, PCT was always higher in the non-survivor, still without reaching statistical significance, but when the analysis was extended till the 15th

关键词： Burns sepsis Procalcitonin Prognosis Antimicrobial stewardship

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Cellulose synthase ‘class specific regions’ are intrinsically disordered and functionally undifferentiated

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Journal of Integrative Plant Biology 2018年第6期60卷 481-497页

作者： Tess R.scavuzzo-Duggan Arielle M.chaves Abhishek singh Latsavongsakda sethaphong Erin slabaugh Yaroslava g.Yingling Candace H.Haigler Alison W.Roberts Department of Biological sciences University of Rhode Island120 Flagg RoadKingstonRI 02881USA Department of Materials science and Engineering North Carolina State UniversityRaleighNC 27695USA Department of Crop and soil sciences and Department of Plant and Microbial Biology North Carolina State UniversityRaleighNC 27695USA

Cellulose synthases （CEsAs） are glycosyltransferases that catalyze formation of cellulose microfibrils in plant cell walls. seed plant CEsA isoforms cluster in six phylogenetic clades, whose non-interchangeable members play distinct roles within cellulose synthesis complexes （CsCs）. A ＇class specific region＇（CsR）, with higher sequence similarity within versus between functional CEsA classes, has been suggested to contribute to specific activities or interactions of different isoforms. We investigated CEsA isoform specificity in the moss, Physcomitrella patens （Hedw.） B. s. g. to gain evolutionary insights into CEsA structure/function relationships. Like seed plants, P. patens has oligomeric rosette-type CsCs, but the PpCEsAs diverged independently and form a separate CEsA clade. We showed that P. patens has two functionally distinct CEsAs classes, based on the ability to complement the gametophore-negative phenotype of a ppcesa5 knockout line. Thus, non-interchangeable CEsA classes evolved separately in mosses and seed plants. However, testing of chimeric moss CEsA genes for complementation demonstrated that functional classspecificity is not determined by the CsR. sequence analysis and computational modeling showed that the CsR is intrinsically disordered and contains predicted molecular recognition features, consistent with a possible role in CEsA oligomerization and explaining the evolution of class-specific sequences without selection for class-specific function.

关键词： Uwe sonnewald Friedrich-Alexander University germany

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Modeling unmanned aerial vehicle system for identifying foci of arboviral disease with monitoring system

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International Journal of Modeling, simulation, and scientific Computing 2022年第3期13卷 98-120页

作者： John David s.Belem Hidalyn Theodory C.M.souza Alvaro sobrinho Lenardo chaves E.silva Helder Fernando De Araujo Oliveira Federal Rural University of the semiarid BR-233s/n Cara´ubasRio Grande do Norte 59780-000Brazil Federal Rural University of the semiarid BR-226s/n Pau dos FerrosRio Grande do Norte 59900-000Brazil Federal University of the Agreste of Pernambuco Avenida Bom Pastor s/nGaranhuns Pernambuco 55292-270Brazil

People who live in low-income and hard-to-reach regions are usually the most affected ones by high incidences of arboviral diseases,increasing morbidity and mortality rates,and public health *** present the modeling of hardware and software components of an unmanned aerial vehicle(UAV)system by mathematical tools,focusing on monitoring foci of arboviral diseases transmitted by Aedes aegypti mosquito,e.g.,Zika,Chikungunya,and *** used restriction equations and the colored Petri nets formal modeling language to represent the flight dynamics and the software components of the system,*** evaluated the specification of desired behaviors of the monitoring system using simulations and the model checking *** results showed the completeness and correctness of the *** design of such a system is challenging due to the potential risks to people and the ***,this study provides insights into the development of an UAV system for such an application *** monitoring system has the potential of improving the efficiency in identifying foci of arboviral diseases.

关键词： system modeling unmanned aerial vehicle colored Petri nets flight dynamics arboviral diseases

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socio-spatial organization reveals paternity and low kinship in the Honduran white bat(Ectophylla alba)in Costa Rica

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Integrative Zoology 2021年第5期16卷 646-658页

作者： Edgar g.gUTIÉRREZ Isabela VIVAs-TORO Daniela CARMONA-RUÍZ David VILLALOBOs-chaves Bernal RODRÍgUEZ-HERRERA Melina Del REAL-MONROY gloria LEÓN-AVILA Jorge ORTEgA Laboratorio de Bioconservación y Manejo Posgrado en Ciencias QuimicobiológicasDepartamento de ZoologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalCiudad de MéxicoMéxico Department of Biology University of WashingtonSeattleWashingtonUSA Escuela de Biología Universidad de Costa RicaSan JoséCosta Rica Laboratorio de genómica Evolutiva Doctorado en Ciencias BásicasUniversidad Autónoma de ZacatecasZacatecasZac.México Laboratorio de genética Posgrado en Ciencias QuimicobiológicasDepartamento de ZoologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalCiudad de MéxicoMéxico

Ectophylla alba is a tent-making bat that roosts in mixed-sex clusters comprising adults and *** goal was to determine the genetic identity of individuals belonging to different roosting *** tested the hypothesis of kin selection as a major force structuring group *** used 9 microsatellites designed for *** to determine the genetic identity and probability of parentage of *** analyzed parentage and kinship using the software ML-Relate,genAIEx,and *** obtained relationship probabilities(0.5)revealed a clear maternal relationship between female adults and offspring with allele compatibility,and at least 5 relationships between male adults and *** found a low degree of relatedness within roosting *** roosting groups at different sites,the mean probability of a half-sibling relationship ranged from 0.214 to 0.244 and,for full-sibling relationship,from 0.383 to ***,adult individuals were poorly related within clusters,and kinship as an evolutionary force could not explain group membership.

关键词： Ectophylla alba group composition kinship microsatellites relatedness

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spatial cluster mapping and environmental modeling in pediatric inflammatory bowel disease

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World Journal of gastroenterology 2023年第23期29卷 3688-3702页

作者： Mielle Michaux Justin M Chan Luke Bergmann Luis F chaves Brian Klinkenberg Kevan Jacobson Department of Pediatrics Division of GastroenterologyHepatology and NutritionFaculty of MedicineBritish Columbia Children’s HospitalUniversity of British ColumbiaVancouver V6H 3V4British ColumbiaCanada British Columbia Children’s Hospital Research Institute British Columbia Children’s HospitalVancouver V5Z 4H4British ColumbiaCanada Department of geography University of British ColumbiaVancouver V6T 1Z2British ColumbiaCanada Department of Environmental and Occupational Health School of Public HealthIndiana UniversityBloomingtonIN 47405United States Department of Cellular and Physiological sciences University of British ColumbiaVancouver V6T 1Z3British ColumbiaCanada

BACKgROUND geographical(geospatial)clusters have been observed in inflammatory bowel disease(IBD)incidence and linked to environmental determinants of disease,but pediatric spatial patterns in North America are *** hypothesized that we would identify geospatial clusters in the pediatric IBD(PIBD)population of British Columbia(BC),Canada and associate incidence with ethnicity and environmental *** To identify PIBD clusters and model how spatial patterns are associated with population ethnicity and environmental *** One thousand one hundred eighty-three patients were included from a BC Children’s Hospital clinical registry who met the criteria of diagnosis with IBD≤age 16.9 from 2001–2016 with a valid postal code on file.A spatial cluster detection routine was used to identify areas with similar *** ecological analysis employed Poisson rate models of IBD,Crohn’s disease(CD),and ulcerative colitis(UC)cases as functions of areal population ethnicity,rurality,average family size and income,average population exposure to green space,air pollution,and vitamin-D weighted ultraviolet light from the Canadian Environmental Health Research Consortium,and pesticide *** Hot spots(high incidence)were identified in Metro Vancouver(IBD,CD,UC),southern Okanagan regions(IBD,CD),and Vancouver Island(CD).Cold spots(low incidence)were identified in southeastern BC(IBD,CD,UC),Northern BC(IBD,CD),and on BC’s coast(UC).No high incidence hot spots were detected in the densest urban *** results were represented as incidence rate ratios(IRR)with 95%*** risk factors for PIBD included fine particulate matter(PM2.5)pollution(IRR=1.294,CI=1.113-1.507,Pgricultural application of petroleum oil to orchards and grapes(IRR=1.135,CI=1.007-1.270,P=0.033).south Asian population(IRR=1.020,CI=1.011-1.028,Ps a risk factor and Indigenous population(IRR=0.956,CI=0.941-0.971,Psize(IRR=0.467,CI=0.268-0.81

关键词： Inflammatory bowel diseases Crohn disease Ulcerative colitis Pesticides Air pollution south Asian people

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glucagon-like peptide 1 receptor activation:anti-inflammatory effects in the brain

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Neural Regeneration Research 2024年第8期19卷 1671-1677页

作者： Yolanda Diz-chaves Zainab Maastor Carlos spuch José Antonio Lamas Lucas C.gonzález-Matías Federico Mallo Biomedical Research Centre(CINBIO) Laboratory of EndocrinologyUniversity of VigoGalicia Sur Health Research InstituteVigoSpain Translational Neuroscience Research group Galicia Sur Health Research InstituteCIBERSAMHospitalÁlvaro CunqueiroSala InvestigaciónEstrada Clara CampoamorVigoSpain Biomedical Research Centre(CINBIO) Laboratory of NeuroscienceUniversity of VigoGalicia Sur Health Research InstituteVigoSpain

The glucagon-like peptide 1 is a pleiotropic hormone that has potent insulinotropic effects and is key in treating metabolic diseases such as diabetes and ***-like peptide 1 exerts its effects by activating a membrane receptor identified in many tissues,including diffe rent brain ***-like peptide 1 activates several signaling pathways related to neuroprotection,like the support of cell growth/survival,enhancement promotion of synapse formation,autophagy,and inhibition of the secretion of proinflammatory cytokines,microglial activation,and apoptosis during neural *** glial cells,including astrocytes and microglia,maintain metabolic homeostasis and defe nse against pathogens in the central nervous *** brain insult,microglia are the first cells to respond,followed by reactive *** activated cells produce proinflammato ry mediators like cytokines or chemokines to react to the ***,under these circumstances,mic roglia can become chro nically inflammatory by losing their homeostatic molecular signature and,consequently,their functions during many *** processes promote the development of neurological disorders and influence their pathological evolution:like the formation of protein aggregates,the accumulation of abnormally modified cellular constituents,the formation and release by injured neurons or synapses of molecules that can dampen neural function,and,of critical impo rtance,the dysregulation of inflammato ry control *** glucagonlike peptide 1 receptor agonist emerges as a critical tool in treating brain-related inflammatory pathologies,restoring brain cell homeostasis under inflammatory conditions,modulating mic roglia activity,and decreasing the inflammato ry *** review summarizes recent advances linked to the anti-inflammato ry prope rties of glucagon-like peptide 1 receptor activation in the brain related to multiple sclerosis,Alzheimer’s disease,Parkins

关键词： astrocytes brain glucagon-like peptide 1 receptor inflammation microglia

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