Drilling-waste management is of great importance in the oil and gas industry due to the substantial volume of multi-component waste generated during the production process. Improper waste handling can pose serious environmental risks, including soil and water contamination and the release of harmful chemicals. Failure to properly manage waste can result in large fines and legal consequences, as well as damage to corporate reputation. Proper drilling-waste management is essential to mitigate these risks and ensure the sustainable and responsible operation of oil and gas projects. It involves the use of advanced technologies and best practices to treat and utilize drilling waste in an environmentally safe and cost-effective manner. This article describes a feasibility study of four drilling-waste management options in the context of the Khanty-Mansi Autonomous Okrug of Russia. For ten years of the project life, the NPV under the base scenario is equal to RUB −3374.3 million, under the first scenario is equal to RUB −1466.7 million, under the second scenario is equal to RUB −1666.8 million and under the third scenario is equal to RUB −792.4 million. When considering projects, regardless of oil production, the project under the third scenario pays off in 7.8 years and the NPV is RUB 7.04 million. The MCD and MCV parameters were calculated to be 106 km and 2290 tons, respectively. Furthermore, the study estimates the ecological damage prevented and the environmental effect of each option. Quantitative risk assessments, conducted through sensitivity analysis, reveal that the fourth option, involving the conversion of drilling waste into construction materials, emerges as the most economically feasible. The study also evaluates the interaction between business and government and analyzes the current situation in the sphere of drilling-waste management, concluding with concise recommendations for both companies and official bodies.

The relevance of the study lies in the fact that with the depletion of conventional oil and gas reserves and an increase in the global demand for hydrocarbons, the focus of the industrial sector is gradually shifting towards the resources of the Arctic, which have tremendous potential for development. However, the current industrial policy has to take into account the concept of sustainable development, or harmony between economy, ecology, and society. Therefore, the extraction of raw materials must obey the principles of the circular economy, which aims to generate closed-loop cycles that maximize the use of the resources extracted and minimize waste generation so as not to destroy fragile ecosystems. It is necessary to drill wells for the discovery of a hydrocarbon deposit on the shelf, which entails the generation of a tremendous amount of complex waste., The use of disposal methods for drilling cuttings, which must be disposed of economically and with environmental reliability, is required to solve the problem. This study compares two methods of disposing of drilling waste. Statistical modeling results and a review of the literature show that the most effective method from both economic and environmental points of view is the thermomechanical cleaning of cuttings on site. This article discusses the advantages and disadvantages of both methods. It also evaluates drilling waste management prospects and opportunities for Russian offshore fields.

Many companies in the mining industry include decarbonization of production among their key strategic goals as part of their internal sustainability strategy. This need is driven by a number of factors: stricter regulation in the area of carbon footprint (introduction of carbon taxes, emissions quotas, reporting requirements); sustained growth in demand for electricity and rising market prices; economic feasibility—the need to optimize operating costs and improve energy efficiency. This study provides a comprehensive technical and economic justification for implementing a hybrid power supply system—combining a solar power plant (SPP) and a gas engine power plant (GPP)—at Solidcore Resources’ Varvarinsky hub in Kazakhstan. The methodology includes modeling the energy balance of the real asset (156.9 GWh of annual energy consumption), calculating the output of a 22.6 MW SPP based on local GHI/PR/η parameters, forming and determining the adaptability coefficient Kₐ (proportion of PV in total monthly electricity generation), conducting an economic assessment (NPV, payback period, sensitivity), and inventorying CO₂ emissions under Scope 1–2. The SPP provides approximately 41.3 GWh of electricity generation per year, with an average annual K_a = 0.263; the 40 MW installed capacity of the gas piston power plant covers the residual demand, forming a stable daily and seasonal balance. The project demonstrates a positive NPV (After Tax) = USD 23.65 million with an estimated payback period of 10 years, while the cost of energy in extraction and processing is reduced by almost three times, and the total reduction in CO₂ emissions will be 51%. Thus, hybridization of energy supply systems is a practical compromise between reliability and decarbonization. Determining the adaptability coefficient K_a allows the flexibility of the system to be taken into account, shows how effectively the new energy system uses renewable energy sources, and can be used to optimize the operation of the energy system to achieve the company’s internal sustainable development goals.

Цель данной статьи заключается в том, чтобы провести оценку возможности применения технологий замкнутого цикла в нефтегазовой отрасли. В результате проведенного анализа отечественной и зарубежной литературы были выявлены четыре способа зацикливания производства в нефтегазовом секторе: утилизация попутного нефтяного газа, технологии улавливания, хранения и использования углекислого газа, очистка и повторное использование добываемой вместе с углеводородами воды, управление отходами бурения. Применение рассмотренных методов может помочь в достижении целей устойчивого развития. Задачами исследования являются: анализ отечественной и зарубежной литературы в сфере циркулярной экономики; выявление проблем устойчивого развития в нефтегазовой отрасли (неблагоприятного воздействия деятельности нефтегазовых компаний на окружающую и социальную среду); обзор существующих технологий, направленных на решение выявленных проблем; классификация технологий, основанных на принципах циркулярной экономики.

The relevance of the study is related to the development of the circular economy in the national economies of many countries of the world, where it is receiving increasing attention. Circular technological and economic models can be considered promising areas of strategic transformation for companies that contrast themselves with traditional business models of an open economic system based on extensive growth. The concept of a circular economy appeared in order to create closed-loop production and consumption models that aim to increase resource efficiency, use waste management approaches and achieve stable coexistence between the economy, the environment and the population. The purpose of the study is to analyze relevant scientific sources and statistical information to determine the advantages and disadvantages of closed-loop economic models at the current stage of scientific and technological progress. The research methodology is based on the use of general scientific research methods such as analysis, generalization, abstraction, synthesis. The results of the study. The article evaluates the current situation of the development of the circular economy in the world, identifies factors that emphasize the extensiveness of the current economy. The main advantages, disadvantages and barriers of the circular economy are presented, classified into four aspects: environmental, economic, technological and social. It is established that from the point of view of the economic development of the branches of the national economy, the circular economy will create new markets and business opportunities in the sectors of recycling and servicing of goods. It is also assumed that circular business models can increase the competitiveness of companies through innovation and optimization of production processes. In addition, circular economic systems will contribute to the development of innovative technologies and processing methods aimed at more efficient use of raw materials and materials.