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.

Waste generation, kt
Waste generation, kt
Waste generation and recycling, kt
2015 2016 2017 2018 2019
Waste generation 1,539.5 1,376.3 1,476.1 1,564.6 1,790.3
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.

Clean Territory Project in 2019
110 km
of pipeline was renovated and replaced

4,238 km
of pipeline was protected with corrosion inhibitors
Corrosion monitoring covered
6,325 km
of pipeline
Diagnostic assessment was carried out on
3,939 km
of pipeline
Public recognition

Messoyakhaneftegaz—a Gazprom Neft subsidiary—uses flocculation and sedimentation units. This Russian-designed resource-saving equipment is used in the construction of wells to clean drilling mud and reuse process water in the drilling process. These units enable the company to reduce the amount of liquid drilling waste that it generates.

In 2019, in the annual Reliable Partner-Ecology national competition for best environmental practices, this project was recognised as the Best Project to Recycle Materials.

Bed sediment processing technology

Construction of new wastewater treatment facilities is an important milestone in the Omsk Refinery upgrade programme, as the facilities will first help to reduce water consumption and atmospheric emissions, and then to decommission the buffer pond.

The buffer pond forms part of the wastewater treatment facilities that are currently in operation; it is used to regulate wastewater flow and to pump it steadily into the OmskVodokanal system.

To prevent waste generation while decommissioning the buffer pond, the Omsk Refinery has developed a technological solution that is unique in Russia; it involves using a bioremediation process to manufacture products from oil-containing bed sediments in the buffer pond.

In 2019, this technology was approved following a state environmental review.

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.

Remote environmental monitoring

In 2019, Gazpromneft-Khantos launched a drone-based system to monitor pipelines and production facilities in the Khanty-Mansi Autonomous Okrug.

An unmanned aerial vehicle is used to monitor the condition of more than 250 km of oilfield flowlines at fields in the Khanty-Mansi Autonomous Okrug-Yugra. It is used to monitor pipeline integrity and the condition of production facilities. This makes it possible to minimise environmental risks, detect potential fire hazards during the high fire-risk season, and to monitor flood risks in spring. Modern high-technology equipment ensures safer operation of the company’s infrastructure, and enables the company to respond to emergencies much more promptly.

>250 km
of oilfield flowlines monitored by unmanned aerial vehicle