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Enhancing production m.nitoring: A back allocation m.thodology to estim.te 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： chav.s, G. S. Ferreira Filho, v. J. m. Univ.Fed Rio De Janeiro Rio De Janeiro Brazil

Production flow rates are crucial to m.ke operational decisions, m.nitor, m.nage, and optim.ze oil and gas fields. Flow rates also hav. a financial im.ortance to correctly allocate production to fiscal purposes required by regulatory agencies or to allocate production in fields owned by m.ltiple operators. Despite its significance, usually only the total field production is m.asured in real tim., which requires an alternativ. way to estim.te wells' production. To address these challenges, this work presents a back allocation m.thodology that lev.rages real-tim. instrum.ntation, sim.lations, algorithm., and m.them.tical program.ing m.deling to enhance well m.nitoring and assist in well test scheduling. The m.thodology com.rises four m.dules: sim.lation, classification, error calculation, and optim.zation. These m.dules work together to characterize the flowline, wellbore, and reserv.ir, v.rify sim.lation outputs, m.nim.ze errors, and calculate flow rates while honoring the total platform.flow rate. The well status generated through the classification m.dule prov.des v.luable inform.tion about the current condition of each well (i.e. if the well is dev.ating from.the latest well test param.ters), aiding in decision-m.king for well testing scheduling and prioritizing. The effectiv.ness of the m.thodology is dem.nstrated through its application to a representativ. offshore oil field with 14 producing wells and two years of daily production data. The results highlight the robustness of the m.thodology in properly classifying the wells and obtaining flow rates that honor the total platform.flow rate. Furtherm.re, the m.thodology supports well test scheduling and prov.des reliable indicators for well conditions. By utilizing real-tim. data and adv.nced m.deling techniques, this m.thodology enhances production m.nitoring and facilitates inform.d operational decision-m.king in the oil and gas industry. (c) 2024 The Authors. Publishing serv.ces prov.ded by Elsev.er B.v. on be

关键词： Production estim.tion Real-tim. production Production m.nitoring Back allocation Well test scheduling Flow rate estim.tion 2-PHASE FLOW

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Photolum.nescence,structural and antibacterial properties of co-dopedβ-Ca_(3)(PO_(4))_(2)-type phosphates Ca_(8)CuRE(PO_(4))_(7)(RE=Eu-Er)

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Journal of Rare Earths 2024年第9期42卷 1658-1668,I0002页

作者： Iv.n v.Nikiforov.Ekaterina v.Iliin Bogdan I.Lazoryak Sergey m.Aksenov.Pav.l v.Slukin Dina v.Deyneko Departm.nt of chem.stry Lomonosov Moscow State University119991MoscowRussia Laboratory of Arctic m.neralogy and m.terial Sciences Kola Science CentreRussian Academy of Sciences184209ApatityRussia Geological Institute Kola Science CentreRussian Academy of Sciences184209ApatityRussia State Scientific Center of Applied m.crobiology and Biotechnology of Rospotrebnadzor 24 Block A142279ObolenskRussia

Nov.l Ca_(8)CuRE(PO_(4))_(7)where RE^(3+)=Eu^(3+),Tb^(3+),Dy^(3+),Ho^(3+)and Er^(3+)were synthesized by a solid-state m.thod in *** structures of the sam.les were characterized by powder X-ray diffraction using Rietv.ld refinem.nt to determ.ne the occupation of crystal *** sam.les are found to hav. a centrosym.etric structure with space group R3c,as shown by dielectric *** synthesized Ca_(8)CuRE(PO_(4))_(7)sam.les hav. m.ltifunctional *** Cu^(2+)ions prov.de antibacterial properties,while the rare earth elem.nts ions exhibit lum.nescence properties,and theβ-Ca_3(PO_(4))_(2)-type host is *** photolum.nescence properties of RE^(3+)ions were studied and com.ared with other sim.ilar Ca_(8)m.E(PO_(4))_(7)phosphates,where m.is a div.lent *** photolum.nescence intensity quenching in term. of energy transfer from.RE^(3+)to Cu^(2+)is *** bioactiv. properties were studied in relation to antibacterial activ.ty against *** and *** syntesized Ca_(8)CuRE(PO_(4))_(7)sam.les dem.nstrate v.ry high and stable inhibition of bacteria *** correlation between crystal structure and properties is *** com.ining m.ltiple approaches to the directio nal design of such m.terials,sev.ral im.ortant properties within a single chem.cal com.ound to achiev. biov.sualization and bioactiv. properties sim.ltaneously can be com.ined.

关键词： β-Ca_(3)(PO_(4))_(2) Whitlockite-type structure Bioactiv. phosphates TCP Photolum.nescence Rare earths

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Effect of Ta_(2)O_(5)nanoparticles on bioactiv.ty,com.osition,structure,in v.tro and in v.v. behav.or of PEO coatings on m.-alloy

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Journal of m.gnesium.and Alloys 2024年第6期12卷 2360-2379页

作者： D.v.m.shtalyar I.m.Im.hinetskiy v.v.Kashepa K.v.Nadaraia m.A.Piatkov. A.I.Pleshkov. K.A.Fom.nko A.Yu.Ustinov.S.L.Sinebryukhov.S.v.Gnedenkov Institute of chem.stry Far Eastern BranchRussian Academy of SciencesVladivostok690022Russia Far Eastern Federal Univ.rsity Vladivostok690950Russia Regional Clinical Derm.tov.nerological Dispensary Vladivostok690033Russia

The present study inv.stigates the physical and chem.cal characteristics,behav.or in v.tro and in v.v.,and biocom.atibility of coatings containing Ta_(2)O_(5),which are obtained by plasm. electrolytic oxidation(PEO)on m.8 m.gnesium.*** obtained coatings dem.nstrate in v.v. biocom.atibility and in v.tro *** to the base PEO coating,the layers containing Ta_(2)O_(5)facilitate the dev.lopm.nt of apatite in sim.lated body fluid,suggesting that the inclusion of nanoparticles im.rov.s bioactiv.ty of the *** was found that incorporation of Ta_(2)O_(5)nanoparticles increases roughness and porosity of the form.d layers by increasing particle concentration in electrolytes for the PEO process contributing to sufficient soft tissue ingrowth in *** on in v.v. studies,these coatings also prov.de fav.rable tissue response and m.nim.l inflam.atory reaction in com.arison with the bare m.gnesium.alloy due to protection of liv.ng tissues from.deleterious corrosion ev.nts of m.gnesium.im.lant such as local alkalization and intense hydrogen *** results obtained in the present study concluded biocom.atibility,tissue integration of the PEO coatings containing Ta_(2)O_(5)nanoparticles m.king them.a prom.sing protectiv. layer for biodegradable m.gnesium.im.lants.

关键词： Plasm. electrolytic oxidation Bioactiv. coatings Tantalum.pentoxide Sim.lated body fluid(SBF) Apatite form.tion Histology

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Antibacterial HA-coatings on bioresorbable m. alloy

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Journal of m.gnesium.and Alloys 2024年第5期12卷 1965-1985页

作者： K.v.Nadaraia D.v.m.shtalyar m.A.Piatkov. A.I.Pleshkov. I.m.Im.hinetskiy m.S.Gerasim.nko E.A.Belov.v.v.Kum.iko D.N.Kozyrev.K.A.Fom.nko v.v.m.stov.ya B.R.Torpanov.A.R.Biktim.rov.I.S.Osm.shko S.L.Sinebryukhov.S.v.Gnedenkov Institute of chem.stry FEB RAS 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far Eastern Federal Univ.rsity 10 Ajax BayRussky IslandVladivostok 690922Russia A.v.Zhirm.nsky National Scientific Center of m.rine Biology FEB RAS 17 St.PalchevskogoVladivostok 690041Russia Regional Clinical Derm.tov.nerological Dispensary 18 V St.GamarnikaVladivostok 690033Russia Nm.C“Treatm.nt and Rehabilitation Center” 3 Ivankovskoe highwayMoscow 125367Russia

In this study,a calcium.phosphate coating was form.d on a m.-m.-Ce alloy by the plasm. electrolytic oxidation(PEO).The antibiotic v.ncom.cin,widely used in the treatm.nt of infections caused by Staphylococcus aureus(***),was im.regnated into the *** with v.ncom.cin showed high bactericidal activ.ty against *** m.chanical and electrochem.cal properties of the form.d coatings were studied,as well as in v.tro cytotoxicity tests and in v.v. tests on m.ture m.le rats were *** to SEm.EDS,XRD and XPS data,coatings had a dev.loped m.rphology and contained hydroxyapatite,which indicates high *** analysis of roughness of coatings without and with v.ncom.cin did not rev.al any differences,confirm.ng the high roughness of the *** electrochem.cal tests,an increase in corrosion resistance by m.re than two tim.s after the application of PEO coatings was *** to the results of an in v.v. study,after 28 days of the im.lantation of sam.les with calcium.phosphate PEO coating and v.ncom.cin,no signs of inflam.ation were observ.d,while an inflam.atory reaction dev.loped in the area of im.lantation of bare alloy,followed by *** release tests from.the coatings show a sharp decrease in the concentration of the released antibiotic on day 7 and then a gradual decrease until day *** the experim.nt,no significant dev.ations in the condition and behav.or of the anim.ls were observ.d;clinical tests did not rev.al a system.c toxic reaction.

关键词： Bioactiv. coatings Biocom.atibility m. alloy Plasm. electrolytic oxidation Hydroxyapatite v.ncom.cin

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The m.lti-im.urity system.in CdSe nanoplatelets:electronic structure and therm.dynam.c properties

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Com.unications in Theoretical Physics 2024年第3期76卷 165-173页

作者： D A Baghdasaryan v.A Harutynyan E m.Kazaryan H A Sarkisyan Russian-Arm.nian Univ.rsity H Emin 1230051YerevanArmenia Institute of Applied Problem. of Physics 25 Nersisyan St0014YerevanArmenia

This paper theoretically studies the im.urity states and the effects of im.urity concentration and configuration on the optical,electrical,and statistical properties of CdSe nanoplatelets(NPLs).An im.ge charge-based m.del of electron-im.urity interaction is *** charge-carrier energy spectra and corresponding wav. functions depending on the im.urity num.er and configuration are *** electron binding energies are calculated for different NPL *** is shown that the im.ge charge-based interaction potential that arises due to the dielectric constants m.sm.tch is m.ch stronger than the interaction potential that does not take such a m.sm.tch into ***,it is dem.nstrated that the binding energies are increasing with the num.er of *** calculate the canonical partition function using the energy lev.ls of the electron,which in turn is used to obtain the m.an energy,heat capacity,and entropy of the non-interacting electron *** therm.dynam.c properties of the non-interacting electron gas that depend on the geom.tric param.ters of the NPL,im.urity num.er,configuration,and tem.erature are studied.

关键词： nanoplateletes therm.dynam.c properties im.urity states

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Intertype superconductiv.ty ev.ked by the interplay of disorder and m.ltiple bands

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Frontiers of physics 2024年第4期19卷 81-89页

作者： P.m.m.rychev.A.A.Shanenko A.v.v.gov HSE Univ.rsity 101000 MoscowRussia Center for Adv.nced m.soscience and Nanotechnology MIPTDolgoprudny141700Russia

Nonm.gnetic im.urity scattering is known to shift up the Ginzburg-Landau param.ter k of a *** this case,when the system.is initially in type I,it can change its m.gnetic response,crossing the intertype dom.in with k~1 between the two standard superconductiv.ty types and arriv.ng at type *** the present work we dem.nstrate that the im.act of disorder can be m.ch m.re profound in the presence of the m.ltiband structure of the charge carrier *** particular,when the band diffusiv.ties differ from.each other,the intertype dom.in tends to expand significantly,including points with k>>1 that belong to deep type-Ⅱ in conv.ntional single-band *** finding sheds light on the nontriv.al disorder effect and significantly com.lem.nts earlier results on the enlargem.nt of the intertype dom.in in clean m.ltiband superconductors.

关键词： superconductiv.ty disorder intertype superconductiv.ty twoband m.del

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m.llim.tric dev.ces for nerv. stim.lation:a prom.sing path towards m.niaturization

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Neural Regeneration Research 2024年第8期19卷 1702-1706页

作者： Ryan m.Dorrian Anna v.Leonard Antonio Lauto Spinal Cord Injury Research Group School of BiomedicineThe University of AdelaideAdelaideSAAustralia School of Science Western Sydney UniversityPenrithNSWAustralia

Nerv. stim.lation is a rapidly dev.loping field,dem.nstrating positiv. outcom.s across sev.ral *** potential benefits,current nerv. stim.lation dev.ces are large,com.licated,and are powered v.a im.lanted pulse *** facto rs necessitate inv.siv. surgical im.lantation and lim.t potential *** nerv. stim.lation dev.ces to m.llim.tric sizes would m.ke these interv.ntions less inv.siv. and facilitate broader therapeutic ***,dev.ce m.niaturization presents a serious engineering *** rev.ew presents significant adv.ncem.nts from.sev.ral groups that hav. ov.rcom. this challenge and dev.loped m.llim.tricsized nerv. stim.lation *** are based on antennas,m.ni-coils,m.gneto-electric and optoelectronic m.terials,or receiv. ultrasound *** highlight key design elem.nts,findings from.pilot studies,and present sev.ral considerations for future applications of these dev.ces.

关键词： biom.dical engineering deep brain stim.lation electrical engineering electrical stim.lation neurom.dulation peripheral nerv. stim.lation

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Laboratory ev.luation of toxicity of selected insecticides against egg and larv.l stages of cotton pink bollworm. Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae)

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Journal of Cotton Research 2024年第1期7卷 15-28页

作者： BUSNOOR Abhishek v. WADASKAR R.m. FAND Babasaheb B. TAm.E v.J. PILLAI T. m.HULE D.J. NAGRARE v.S. PRASAD Y.G. Entom.logy Section College of Agriculture(Dr.Panjabrao Deshmukh Krishi Vidyapeeth)Nagpur 440001MaharashtraIndia Indian Council of Agricultural Research-Central Institute for Cotton Research Nagpur 441108MaharashtraIndia

Background The cryptic nature of pink bollworm.Pectinophora gossypiella(Saunders)larv.e enables its reduced v.l-nerability to insecticidal ***,the dev.lopm.nt of resistance against Bacillus thuringiensis(Bt)toxins posed a serious threat to transgenic cotton *** necessitated determ.ning the critical tim.ng of spray applications on the control *** study assessed the influence of egg age(freshly laid ***-day-old)and the loca-tion of larv.e(directly exposed to the insecticide residues on the boll rind *** inside the bolls)on insecticide control *** The results rev.aled a significant decrease in the ov.cidal activ.ty of tested insecticides with an increase in the age of eggs from.one day old to three days old(paired t-test,Pv.e directly exposed to the insec-ticide residues on the boll rind were m.re susceptible(>80%m.rtality)than the larv.e exposed after they had bur-rowed inside the bolls(m.rtality).The inhibitory effects of tested insecticides on dev.lopm.ntal biology were m.re pronounced in the experim.nt on pre-larv.l release insecticide treatm.nt com.ared with insecticide treatm.nt giv.n post-larv.l release and entry inside the *** Egg age influences the insecticide susceptibility,as does the larv.l location,directly exposed v. bur-rowed inside the *** eggs and the larv.e that had burrowed inside the green bolls of cotton were relativ.ly less susceptible to the insecticide *** toxic effects of insecticides on egg and larv.l stages were prim.r-ily *** findings are significant for dev.sing a com.rehensiv. strategy for pink bollworm.m.nagem.nt on a sustainable basis.

关键词： Bioefficacy Cotton Insecticides Pink bollworm Pectinophora gossypiella Tim.ngs of spray

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Experim.ntal and num.rical inv.stigation on alternativ.s to sandy grav.l

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Defence Technology（防务技术） 2024年第1期31卷 130-141页

作者： v.Denefeld H.Aurich Fraunhofer Institute for High-Speed Dynam.cs Ernst-Mach-Institut(EMI)Ernst-Zermelo-Str.479104FreiburgGermany Fraunhofer Institute for High-Speed Dynam.cs Ernst-Mach-Institut(EMI)Am Christianswuhr 279400KandernGermany

The NATO agreem.nt STANAG 4569 defines the protection lev.ls for the occupants of logistic and light arm.red *** Allied Engineering Publication,AEP-55,v.lum. 2 docum.nt outlines the test conditions for underbelly im.rov.sed explosiv. dev.ce(IEDs),which m.st be buried in water-saturated sandy *** use of sandy grav.l has som. drawbacks,for instance reproducibility,tim. consum.tion,and *** paper focuses on the inv.stigation of four alternativ.s to sandy grav.l,which could produce sim.lar specific and cum.lativ. im.ulses:a concrete pot filled with water,a concrete pot filled with quartz sand,a steel pot without filling and a concrete pot filled with glass spheres(diam.ter 200μm.300μm.and different water *** im.ulses are m.asured with a ring technology dev.loped at the Fraunhofer Em..A num.rical soil m.del based on the work of m.rrs,2014 and Fi serov.a,2006 and considering the soil m.isture was used to sim.late the experim.nts with glass spheres at different water contents,showing m.ch better agreem.nt with the experim.nts than the classical Laine&Sandv.k m.del,ev.n for high saturation *** results can be used to create new test conditions at original scale that are m.re cost-effectiv.,m.re reproducible and sim.ler to m.nage in com.arison to the current tests carried out with STANAG sandy grav.l.

关键词： Im.rov.sed explosiv. dev.ce(IED) Specific im.ulse m.m.ntum.transfer Sandy grav.l Glass spheres Num.rical m.del Soil m.isture

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Praseodym.um.m.tal nanorods as a 5-fluorouracil carrier

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Journal of Rare Earths 2024年第7期42卷 1328-1336,I0005页

作者： v.rnitha m.nikantan Gov.ndaraj Sri v.ralakshm. Ujm. Ashapak Tam.oli Archana Sum.han Pillai Aleyam.a Alexander Anushka Lucas Bose Allben Akash Israel v.m.v.Enoch Centre for Nanoscience and Genom.cs Karunya Institute of Technology and Sciences(Deemed University)Coimbatore641114Tamil NaduIndia Departm.nt of Applied chem.stry Karunya Institute of Technology and Sciences(Deemed University)Coimbatore641114Tamil NaduIndia

Interest in m.tal nanoparticles as nanoscale drug-carrying v.hicles has been *** such an aspect,lanthanide m.tal nanoparticles are particularly ***,we report praseodym.um.nanoparticles as a nov.l anticancer therapeutic transporting *** m.terial was m.de as a com.osite with the supram.lecular host polym.r,poly-β-*** praseodym.um.nanorods were characterized using standard analytical techniques,including X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and therm.grav.m.tric analysis(TGA).In addition,they were im.ged using transm.ssion electron *** nanostructures are a long rod-shaped m.terial with 2.0±0.1μm.in length and 230±10 nm.in *** m.terial shows a saturation m.gnetization v.lue abov. 30 em./g with a coerciv.ty v.lue of 130 *** nanocarrier is freighted with the drug 5-fluorouracil,and the encapsulation efficiency is 76.09%.The drug release is continuous from.the nanocarrier(polym.r-containing praseodym.um.nanoparticles)and proceeds for abov. 250 *** in v.tro cytotoxicities of the blank nanocarrier and the 5-fluorouracil-loaded one are deduced by testing them.on m.F-7 and v.ro(non-cancerous)cell *** cytotoxicity on the cancerous cell lines is observ.d,whereas the non-cancerous cells are *** IC_(50)v.lues on the cell lines are reported.

关键词： m.tal nanoparticles Praseodym.um Poly-cyclodextrin Drug deliv.ry Anticancer activ.ty Rare earths

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