zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-1488Research ArticleАННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙABSTRACTS ENGLISH-LANGUAGE ARTICLESЗависимость ширины ЯМР-линий сырой нефти на частоте 400 МГц от характеристик скважинDependence of 400 MHz NMR Peak Line Widths of Crude Oil on Well CharacteristicsKalD.KalD.

Батман

Batman

SunkurM.SunkurM.

Батман

Faculty of Art and Sciences, Department of Chemistry,

Batman

KöylüM.Z.KöylüM.Z.

Диярбакыр

Faculty of Sciences, Department of Physics,

Diyarbakir

mzkoylu@gmail.comYilmazA.YilmazA.

Батман

Faculty of Art and Sciences, Department of Chemistry,

Batman

Высшая школа естественных и прикладных наук Университета БатманаBatman University, Graduate School of Natural and Applied SciencesУниверситет БатманаBatman UniversityУниверситет ДиджлеDicle University202413022024911161161Copyright © Kal D., Sunkur M., Köylü M., Yilmaz A., 20242024Kal D., Sunkur M., Köylü M., Yilmaz A.Kal D., Sunkur M., Köylü M., Yilmaz A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://zhps.ejournal.by/jour/article/view/1488

Изучена взаимосвязь между свойствами сырой нефти и шириной ЯМР-линий CH2 и CH3, а также между шириной линии воды в сырой нефти и процентным содержанием воды. Набор из 22 смесей готовили путем добавления 0.02 мл сырой нефти к 0.98 мл CDCl3. ЯМР-спектр, в том числе пики воды в смесях, получен с помощью спектрометра, работающего на частоте 400 МГц. Ширины линий парафиновых пиков CH2 и CH3 варьируются в зависимости от скважины. Ширина линии CH3 уменьшается почти линейно в соответствии с данными Американского института нефти. Ширина линии воды при 4.75 ppm сильно зависит от процентного содержания воды в сырой нефти. Используемые смеси дают соответствующие пики ЯМР для CH2, CH3 и воды в сырой нефти. ЯМР-пики воды в сырой нефти впервые отображены в сильном поле. Подтверждены результаты, полученные в области низких частот ЯМР. Предложен новый подход к исследованиям ЯМР в сильном поле в химии нефти.

Today, magnetic field inhomogeneity in high-field NMR machines is minimized by proper shimming of the machine and extensive dilution of the sample with deuteron solvents. Hence, the line width (LW) measurements of the NMR peaks are reliable for NMR studies. This study is aimed at examining the relationship between the crude oil properties and the LW values of the CH2 and CH3 peaks and the relationship between the LW of water in crude oil and the percentage of water. A set of 22 mixtures was prepared by adding 0.02 mL of each crude oil to each 0.98 mL of CDCl3. A suitable NMR spectrum, including the water peaks of the mixtures, was obtained with a spectrometer operating at 400 MHz. Paraffinic CH2 and CH3 peak LWs vary from well to well. Paraffinic CH3 LW decreases nearly linearly with American Petroleum Institute gravity. In addition, the LW of the water peak at 4.75 ppm is strongly related to the percentage of water in crude oil. The mixtures used in this study provide the appropriate NMR peaks for CH2, CH3, and water in crude oil. NMR peaks of water in crude oil were displayed for the first time in the high field. Some of the previous results obtained in the low-NMR field were found. Therefore, this study suggests an additional approach for high-field NMR studies in petroleum chemistry.

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The authors declare that there are no conflicts of interest present.