Waste management and land use
To minimise the risk of oil and petroleum products contaminating the soil, Gazprom Neft constantly monitors the reliability of its equipment and makes use of new technologies. In addition, the company recycles waste generated in the course of production.
The growth in waste generation in 2019 was driven mainly by an increase in the number of wells under construction at Gazprom Neft fields, and ongoing refinery modernisation, which involves upgrading production capacities and dismantling old equipment.
Nevertheless, 96% of waste generated by the company is treated and recycled using environmentally safe methods.
Sludge generated by drilling in the course of hydrocarbon exploration and production makes up a significant proportion of the waste generated by the company. Improving the efficiency of sludge processing is an important environmental priority for Gazprom Neft.
The company’s drilling-waste management framework is designed to reduce environmental risks and standardise waste management requirements. It takes into account the infrastructure of the fields being developed by the company, existing drilling waste processing technology, technical and economic indicators, and the remoteness of the field in question.
Drilling rigs currently used by Gazprom Neft are equipped with a drilling-waste cleaning and drying system. This ensures that as much previously used drilling fluids and process water as possible are reused in the production process.
The company continues to develop infrastructure for using waste in the production process, and to explore technological solutions that will help to reduce waste generation.
|Total volume of recycled and treated waste||1,410.3||1,310.1||1,298.4||1,517.4||1,720.5|
|Share of waste sent for recycling, %||92||95||88||97||96|
In 2019, Slavneft-Megionneftegaz piloted the construction of wells using hydrocarbon-based drilling fluids. The experiment demonstrated that the volume of sludge generated by drilling was more than 29% lower than the estimated volume of that generated when using standard drilling techniques. In addition, Slavneft-Megionneftegaz commissioned an industrial and consumer waste landfill site at the Achimovskoye oil field, which includes infrastructure for drilling sludge processing.
Gazprom Neft continues to implement a targeted programme which includes the Clean Territory Project and is designed to improve pipeline reliability. This targeted programme involves assessing, monitoring, forecasting and extending the life of pipeline systems, as well as proactively replacing pipeline sections, based on the findings of diagnostic assessments. The Clean Territory Project also involves remediating disturbed lands.
The programme is centred around preventative measures enabling the timely detection of pipeline defects and potential vulnerabilities likely to result in pipeline failure, and thus helping to prevent emergencies.
The implementation of the pipeline reliability programme has helped to reduce potential risks of pipeline incidents.
To monitor pipeline integrity, the company’s subsidiaries use various leak detection systems (such as fibre-optic, parametric and volume balance systems).
As part of R&D implementation and roll-out, in 2019, Gazpromneft-Vostok started a pilot project to switch to carrying out its own in-line inspections of small-diameter pipelines using an in-line defect detector designed by Gazprom Neft.
Green Seismic project
The company is implementing the Green Seismic project, which uses seismic survey technology to help prevent deforestation. A conventional approach requires making wide forest clearings to enable heavy all-terrain vehicles to pass, as receiver lines are four metres wide and source lines are four to five metres wide. 'Green' seismic surveys use wireless recording equipment that can be installed using lightweight vehicles. This helps to make forest clearings much narrower or avoid making them at all.
In 2019, the project team found another engineering solution that helps to provide further benefits from this technology: crooked-line geometry, whereby survey lines deviate around large trees, which helps to minimise damage to the forest. Pilot testing of this approach has been scheduled for 2020.
Between 2016 and 2019, Green Seismic technology was introduced at Gazpromneft-Khantos, Slavneft-Megionneftegaz, Gazpromneft-Vostok, Gazpromneft-GEO, the Bazhenov Technology Centre and Gazpromneft-Noyabrskneftegaz.
More than 3.5 million trees were saved from being cut down between 2016 and 2019 thanks to the use of Green Seismic technology.