Biological Diversity and Productivity of Ecosystems Print version
All protected area within the OAO TATNEFT activity spread occupy a total area of 53.8 thousand hectares, which makes 1.5% of the entire activity area. As the Company aspires for long-term social sustainability and environmental harmony it tries to conserve existing ecosystems, species in the they are by integrating biodiversity into its operational strategy.
There are natural reserve facilitiesin OAO TATNEFT's activity area which receive the Company's primary care. All kinds of economic activity within the reserves are carried out under strict consideration of their legal status and in accordance with environmental standards.
Biodiversity evaluation in the Company's activity area was given to bioindication based on organisms' ability to react to hostile impacts by changing some of their characteristics and properties.
There are two specialized zoological protected spots in the south-east of Tatarstan inhabited by steppe marmots. Progressive technologies employed by the Company prenting accidental oil spills and air pollution, oil wells location beyond marmot habitat and use of directional and horizontal drilling excludethreats for marmots populating the oil-field territory. Thanks to great workon preservation of marmots their populationdoesn't cause any concern.
The Red list of Intenational Wildlife Conservation Union (IWCU) involves presently musk-rats out of the mammals inhabiting the OAO TATNEFT activity area. Musk-rats have been registered between 1941 and 1970 in the far North-East of the republic within Belaya river basis. It is known that within these areas oil field development started after70-s of the past century.
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At the same time complex measures are implemented in the Company aimed at reduction of negative impact on the environment. The introduction of light ends recovery units at petroleum treatment facilities, multiphase pumps, flare gas utilization technology providing electric energy etc. have all reduced contaminants emission to the atmosphere.
In order to mitigate corrosion and prevent accidents at the pipelines, corrosion inhibitors are employed along with polymer coated and reinforced plastic pipes, electrochemical protection methods of boreholes. All these measures are extremely important in preventing brine leakage at various sections of the oil gathering and water treatment systems thus preventing spoiling of soil and underground and surface waters.
To reduce technological environmental impact on soil caused by oil well construction, equipment and technologies employed for drilling are subject for permanent improvement. Thus, 50% of drilling units in service are equipped with mud circulation systems. This allows to sufficiently increase efficiency of cleaning drilling mud from solid matter during penetration and repeatedly use it in subsequent drilling.
It may be said without exaggeration that 100% of waste water obtained during oil extraction and treatment is used for pressure maintenance, i.e. is returned back to fromation. Along with solving ecological issues, this measure provides sensible economic effect, taking off the need in expensive fresh water.