One of the modern ecological approaches in the development of new methods and technologies in the field of drilling mud management is not only to reduce the environmental burden on nature, but also the rational use of drilling mud as an affordable raw material for obtaining practically important products. This practice allows to obtain not only environmental, but also economic effect. Rosneft Oil Company is applying a set of measures to develop and implement the best available waste-free technologies for the disposal and neutralization of drilling waste, including within the framework of accumulated damage. The bulk of drilling waste is drilling sludge, which is a mixture of drilled rock, reservoir fluids and partially spent drilling mud removed from the circulation system of the drilling rig by cleaning devices. Rosneft Oil Company has developed and patented a technology for the disposal of drilling waste, which allows to obtain a stable positive environmental effect, as well as a product suitable for use in the economic activities of the subsidiary company. The key feature of the technology is a new sorbent-destructor of own design. The use of a sorbent-destructor promotes the sorption of hydrocarbons, heavy metals, radionuclides and surfactants contained in drilling mud, which leads to a decrease in the total content of pollutants. The article discusses the efficiency of the technology of disposal of drilling mud using a sorbent-destructor. The scheme of the process of disposal of drilling waste using a sorbent-destructor is presented. The assessment of changes in the content of the main pollutants contained in the drilling mud was carried out. Conclusions are drawn about the main advantages of using the developed technology.
References
1. Guba A.S., Pletneva, N.I., Yavich M.Yu., Identification of drilling waste (In Russ.), Neft’. Gaz. Novatsii, 2019, no. 11(288), pp. 82–86.
2. Smagin A.V., Kol’tsov I.N., Pepelov I.L. et al., The physical state of finely dispersed soil-like systems with drilling sludge as an example (In Russ.), Pochvovedenie = Eurasian Soil Science, 2011, no. 2, pp. 179–189.
3. Rosneft'. Otchet v oblasti ustoychivogo razvitiya za 2022 god (Rosneft. Sustainability Report 2022), URL: https://www.rosneft.ru/upload/site1/document_file/Rosneft_CSR2022_RUS.pdf
4. Patent RU 2767535 C1. Method for treating drilling waste, Inventors: Kozhin V.N., Guba A.S., Ivanov A.S., Dmitrieva Ya.V., Bakhtizin R.N., Sukharev V.V.
