Development of a novel relationship between salt content and radium concentration in crude oil
DOI:
https://doi.org/10.31349/RevMexFis.72.021201Keywords:
Salinity, Radium-salinity relationship, Radioactive waste management, Radioactive concentration, Salt contentAbstract
Radium is one of the most important natural radioactive sources associated with crude oil and its extraction processes. The importance of this radioactive element is highlighted by its ability to precipitate inside oil pipelines, forming what is known as scales. Depending on its concentrations in the extracted oils, its concentrations vary according to the type of oil reservoir and its geological formations. The aim of the current study is to find a mathematical relationship linking the salt content of crude oil with the concentration of radium. Thirty samples of crude oil were taken from the fields in Thi Qar province, Iraq, and tested to determine the concentrations of radium resulting from the 238U and 232Th series using gamma ray spectroscopy based on a sodium iodide scintillation detector with dimensions of 3 × 3 inch. At the same time, the salt content was also determined in each of the studied samples. The obtained results were used to create a mathematical relationship linking the radioactive concentration of radium isotopes to the salt content in crude oil. The relationship showed an accuracy of nearly 90% and demonstrated a direct relationship between the salt content and the concentrations of radium isotopes.
References
D. Deering, N. Dietrich, M. Köhler, and F. Krüger, The radium triplet 226Ra, 228Ra, 224Ra in saline deep water - a valuable information source, Journal of Environmental Radioactivity, 277 (2024) 107449, https://doi.org/10.1016/j.jenvrad.2024.107449
W. Su et al., Effects of salinity and particle size on radium desorption from river sediments in the QinghaiTibet Plateau, Journal of Environmental Radioactivity, 241 (2022) 106771, https://doi.org/10.1016/j.jenvrad.2021.106771
J. Tomita, J. Zhang, and M. Yamamoto, Radium isotopes (226Ra and 228Ra) in Na-Cl type groundwaters from Tohoku District (Aomori, Akita and Yamagata Prefectures) in Japan, Journal of Environmental Radioactivity, 137 (2014) 204, https://doi.org/10.1016/j.jenvrad.2014.07.021
E. L. Rowan, M. A. Engle, C. S. Kirby, and T. F. Kraemer, Radium content of oil- and gas-field produced waters in the Northern Appalachian Basin (USA): Summary and discussion of data, Scientific Investigations Report 2011-5135, U.S. Geological Survey (2011)
J. Garner and D. Read, Optimisation of radium removal from saline produced waters during oil and gas extraction, Minerals, 10 (2020) 278, https://doi.org/10.3390/min10030278
N. R. Warner, M. A. Ajemigbitse, K. Pankratz, and B. McDevitt, Naturally occurring radioactive material (NORM), in Environmental Impacts from the Development of Unconventional Oil and Gas Reserves, J. Stolz, D. Bain, and M. Griffin (Eds.), Cambridge University Press, pp. 214-245 (2022), https://doi.org/10.1017/9781108774178.012
A. Vengosh and E. Weinthal, Conventional crude oil and tight oil-water nexus, in Water Quality Impacts of the EnergyWater Nexus, Cambridge University Press, (2022), pp. 81-135. https://doi.org/10.1017/9781107448063.004
A. M. Radhi, J. M. Rashid, and I. Inci, The impact of low doses of gamma rays on chemical and hematological parameters for healthy people and diabetes in Thi Qar province, University of Thi-Qar Journal of Science (UTJsci) 10 (2023) 200
A. S. Saadoun and J. M. Rashid, Determination of health risk coefficients for natural radioactive elements in crude oil produced from Al Gharraf oil field, University of Thi-Qar Journal of Science (UTJsci), 13 (2018) 42
K. F. Majeed and E. Salama, Natural radioactivity assessment around the petroleum producing areas of The Qar province, Iraq, Environmental Earth Sciences, 80 (2021) 64, https://doi.org/10.1007/s12665-020-09316-5
L. Mostafa, M. Riazi, and A. Shahab, Investigation of effects of salinity, temperature, pressure, and crude oil type on the dynamic interfacial tensions, Chemical Engineering Research and Design, 115 (2016) 53, https://doi.org/10.1016/j.cherd.2016.09.020
T. F. Kraemer and D. F. Reid, The occurrence and behavior of radium in saline formation water of the U.S. Gulf Coast region, Chemical Geology, 46 (1984) 153
J. S. Hanor, Barite-Celestine geochemistry and environments of formation, Reviews in Mineralogy and Geochemistry, 40 (2000) 193
H. Hedström, Radium Sulfate and its Co-Precipitation Behavior with Barium and Strontium, Ph.D. dissertation, Chalmers University of Technology, Gothenburg, Sweden (2013)
A. Kitamura, Update of JAEA’s Thermodynamic Database for Solubility and Speciation of Radionuclides for Performance Assessment of Geological Disposal of High-Level and TRU Wastes, JAEA-Data/Code, 2020-020, Japan Atomic Energy Agency, Tokai-mura (2021)
F. Hamed, A. Shahab, and F. Mobeen, The effect of brine salinity and oil components on dynamic IFT behavior of oil-brine during low salinity water flooding: Diffusion coefficient, EDL establishment time, and IFT reduction rate, Journal of Petroleum Science and Engineering, 196 (2021) 107862, https://doi.org/10.1016/j.petrol.2020.107862
S. C. Ayirala, A. A. Yousef, and Y. M. Al-Roomi, Effects of salinity and individual ions on crude-oil/water interface physicochemical interactions at elevated temperature, SPE Reservoir Evaluation & Engineering, 22 (2019) 897, https://doi.org/10.2118/190387-PA
G. F. Knoll, Radiation Detection and Measurement, (4th ed., Wiley 2010)
M. M. Al-Faifi, M. A. Zaki, M. S. Al-Ghamdi, and H. A. AlFuhaid, Assessment of natural radioactivity in petroleum crude oil using gamma spectroscopy, IEEE Transactions on Nuclear Science, 59 (2012) 1980, https://doi.org/10.1109/TNS.2012.2203495
M. I. M. O’Kane, Introduction to Radiation Protection, (4th ed., CRC Press 2017).
Energy Institute, IP 77 - Determination of Salt Content: Extraction and Volumetric Method, Energy Institute, (London 2015)
M. Fortuny, E. B. Silva, A. C. Filho, R. L. F. V. Melo, M. Nele, R. C. C. Coutinho, and A. F. Santos, Measuring salinity in crude oils: Evaluation of methods and an improved procedure, Fuel, 87 (2008) 1241, https://doi.org/10.1016/j.fuel.2007.07.013
A. A. Pasbana and B. Nonahala, The investigation of precision of analytical methods for determination of salt content in Iranian crude oils, Analytical Methods in Environmental Chemistry Journal, 1 (2018) 23, https://doi.org/10.24200/amecj.v1.i01.33
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