Gazprom Neft continues implementation of “green” seismic techniques
Gazprom Neft is continuing its use of “green” seismic operations — the first company in Russia to do so. The company has completed seismic surveying at the Zapadno-Luginetskiy license area in the Tomsk oblast (under development by Gazpromneft-Vostok), undertaken with the use of new environmentally friendly technology, allowing a twofold reduction in the volume of forest that would otherwise have been compromised under traditional seismic operations.
A key feature of “green” seismic operations is the use of cordless equipment,
which can be used without forestry needing to be thinned.
The area over which seismic data was compiled extends to some 53 square kilometers, with the total length of seismic profiles amounting to 160 kilometres. Seismic operations have had to be conducted in the forested floodplain on which the Luginetskiy license area is located, within the Vostochno-Myginskoye field. The outcomes of this research will help determine locations for the drilling of six new wells in the outer zones of the field.
Green seismic technology was first used in Russia by Gazprom Neft in early 2014, at the West Chatylkinskiy license area (Yamalo-Nenets Autonomous Region), under development by Gazpromneft-Noyarbskneftegaz. The system involves the application of compact cordless recording equipment, which can be put in place without specialist heavy equipment, access for which would typically require the creation of a clearing. Whereas the use of traditional technologies demands the creation of forest clearings of up to four metres in width, the installation of sensors can be achieved through pathways 1–1.5 metres wide, cleared of undergrowth and shrubs. Data obtained under “green” seismic is in no way inferior to that obtained under traditional seismic operations.
Alexey Vaskevich, Head of Geological Exploration and Resource Base Development at Gazprom Neft commented: “The outcomes of work in the use of modern environmentally friendly technologies suggests we can proceed in applying ‘green’ seismic technologies more widely. As well as mitigating the impact on the natural environment, this new system has an additional benefit — the opportunity to significantly improve workplace safety: logging, as we know, having traditionally been associated with a high risk of injury. Confirmation of the role of new technology in addressing this issue lies in the fact that not one single health and safety incident was recorded throughout the entire period of seismic operations at the Zapadno-Luginetskiy area.”
The Zapadno-Luginetskiy area (covering a total 1,800 square kilometres) is located in the Parabelsky district of the Tomsk Oblast. The Vostochno-Myginskoye field, on which the “green” seismic investigations were conducted, is located within this area.
The basis for the project on which the use of “green” seismic is based involved the use of a cordless data collection system, previously used by Gazprom Neft in seismic operations in the complex relief of the Kurdistan Region of Iraq. The cordless system optimises the production cycle significantly, particularly through the deployment of sensors in difficult terrain. A further key benefit is the opportunity to obtain real-time data and undertake rapid processing of this, in the field.
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