The paper highlights topical issues of the drill cuttings radioecological safety assessment in the process of waste management. Particular attention is paid to the necessity for continuous radioecological research and well-timed receipt of their results. The conducted research allows to solve the scientific and practical problem of radioecological studies optimization during management of drilling waste by development of the new methodical approach to their processing and interpretation. The most widespread natural radionuclides Th²³², Ra²²⁶, K⁴⁰ were selected as the focus group. An example of experimental determining the drill cuttings radiological properties depending on the depth of drilling is given. The results of these works were analyzed using the methods of regression and correlation analysis. The regression dependence of the specific effective radioactivity on the sampling depth for the investigated well is obtained. An approach using the obtained dependences as calibration graphs for a preliminary radiological assessment of drill cuttings of a similar genesis is proposed. The logical-informational model that implements this approach is described. It is shown that the use of the logical-informational model optimizes the decision-making process on the suitability of drill cuttings for their utilization to a useful product – soil-like reclamation mixtures.

1. E. R. Landa, “Naturally occurring radionuclides from industrial sources: characteristics and fate in the environment,” Radioactivity in the Environment, vol. 10, pp. 211-237, 2007.
   DOI: 10.1016/S1569-4860(06)10010-8
2. M. D. A. Sharif, N. V. R. Nagalakshmi, S. S. Redd, “Drilling waste management and control the effects,” J. Adv. Chem. Eng., vol. 7, no. 1, 2017.
   DOI: 10.4172/2090-4568.1000166
3. С. В. Мещеряков, С. В. Остах, О. С. Остах, Д. И. Рогожин, “Инжиниринговая интерактивная система по обезвреживанию нефтесодержащих отходов, загрязненных природными радионуклидами,” Безопасность труда в промышленности, № 9, C. 46-51, 2017.(S.V. Meshcheryakov, S.V. Ostakh, O.S. Ostakh, D.I. Rogozhin, “Interactive engineering system for the neutralization of oily waste contaminated with natural radionuclides,” Labor Safety in Industry, vol. 9, p. 46-51, 2017.)
   Retrieved from: https://www.elibrary.ru/download/elibrary_29991780_37741525.pdf
4. S. I. Onwukwe, M. S. Nwakaudu, “Drilling wastes generation and management approach,” International Journal of Environmental Science and Development, vol. 3, no. 3, pp. 252-257, 2012.
   Retrieved from: http://www.ijesd.org/papers/226-D598.pdf
5. В. А. Галактионов, В.Г. Журавлев, И.В. Павлова, В.А. Домаренко “Ранжирование техногенного радионуклидного загрязнения по критериям оценки радиоэкологического состояния при строительстве Альконского горно-металлургического комбината,” Материалы V Международной конференции. ФГАОУ ВО “Национальный исследовательский Томский политехнический университет,” c . 172-175, 2016. (V. Galaktionov, V. Juravlev, I. Pavlova, V. Domarenko “Ranging of technogenic radionuclide pollution on estimation criteria of radioecological condition for Elkon mining metallurgical plant construction,” Materials of the V International Conference. FGAOU VO “National Research Tomsk Polytechnic University” , pp. 172-175, 2016)
6. M. F. Attallah, H. M. Abdelbary, E. A. Elsofany, Y. T. Mohamed, M. M. Abo-Aly, “Radiation safety and environmental impact assessment of sludge TENORM waste produced from petroleum industry in Egypt,” Process Safety and Environmental Protection, vol. 142, pp. 308-316, 2020.
   DOI: 10.1016/j.psep.2020.06.012
7. F. Moatar, S. R. Shadizadeh, A. R. Karbassi et al., “Determination of naturally occurring radioactive materials (NORM) in formation water during oil exploration,” J. Radioanal. Nucl. Chem., vol. 283, pp. 3–7, 2010.
   DOI: 10.1007/s10967-009-0001-2
8. С. В. Мещеряков, С. В. Остах, А. В. Сушкова, О. С. Остах, “Алгоритмический подход к процессам обращения с отходами бурения,” Экология и промышленность России, № 10 (21), С. 9-13, 2017. (S. V. Meshcheryakov, S. V. Ostakh, A. V. Sushkova, O. S. Ostakh, “Algorithmic Approach to the Processes of Drilling Waste Management,” Ecology and Industry of Russia, vol. 10, no. 21, pp. 9-13, 2017.)
   DOI: 10.18412/1816-0395-2017-10-9-13
9. A. R. Ismail, A. H. Alias, W. R. W. Sulaiman, M. Z. Jaafar, I. Ismail “Drilling fluid waste management in drilling for oil and gas wells,” Chemical Engineering Transactions, vol. 56, pp. 1351-1356, 2017.
   DOI: 10.3303/CET1756226
10. O. Ostakh, E. Uzyakova, N. Grechishcheva, V. Kusheeva “Ecotoxicological assessment of soil-like mixtures made of drill cuttings,” Journal of Engineering, Design and Technology, vol. ahead-of-print, no. ahead-of-print, 2021.
    DOI: 10.1108/JEDT-07-2020-0310
11. ГОСТ 30108-94, “Материалы и изделия строительные. Определение удельной эффективной активности естественных радионуклидов,” М.: Стандартинформ, c. 16, 2007. (GOST 30108-94, “Building materials and products. Determination of the specific effective activity of natural radionuclides,” M.: Standartinform, p. 16, 2007.)
    http://docs.cntd.ru/document/gost-30108-94
12. J. Jónás, J. Somlai, A. Csordás, E. Tóth-Bodrogi, T. Kovács, “Radiological survey of the covered and uncovered drilling mud depository,” Journal of Environmental Radioactivity, vol. 188, pp. 30-37, 2018.
    DOI: 10.1016/j.jenvrad.2017.10.020
13. А. В. Безденежных, О. С. Остах, С. В. Остах, В. Л. Заворотный, В. С. Столбовой, “Радиационно-химическая характеристика буровых шламов Западной Сибири и модернизация системы обращения с отходами бурения,” Экология и промышленность России, Т. 24, № 9, С. 16-21, 2020. (V. Bezdenezhnykh, O. S. Ostakh, S. V. Ostakh, V. L. Zavorotny, V. S. Stolbovoy, “Radiation-chemical characteristics of drilling cuttings from Western Siberia and modernization of the drilling waste management system,” Ecology and Industry of Russia, vol. 24, no. 9, pp. 16-21, 2020)
    DOI: 10.18412/1816-0395-2020-9-16-21
14. В. Ф. Горбунов, В. М. Кузьмин, И. М. Плюснин, Б. А. Терентьев, Ю. С. Шимелевич, “Способ привязки бурового шлама к разрезу скважины,” Авторское свидетельство SU 898372 A1, 15.01.1982. Заявка № 2574891 от 30.01.1978. (V. F. Gorbunov, V. M. Kuzmin, I. M. Plyusnin, B. A. Terentyev, Yu. S. Shimelevich, “Method of attaching drill cuttings to the well section,” Inventor’s certificate SU 898372 A1, 15.01.1982, Application No. 2574891 dated 01/30/1978.)
    Retrieved from: https://www.elibrary.ru/download/elibrary_39993918_26203133.pdf

Violetta Kusheeva, Sergey Ostakh, "Data enhancement of radioecological research during drilling waste utilization to reclamation mixtures," RAD Conf. Proc, vol. 4, 2020, pp. 126–131, http://doi.org/10.21175/RadProc.2020.27