Tatneft PJSC has developed and introduced a number of standards and guidelines for reclamation of soils disturbed by oil-field facilities construction and operation. The documents developed and approved include: Program and procedure of lab tests to establish limit values of allowable residual oil and oil products content after reclamation operations; limit values of allowable residual oil and oil products content for soils prevailing on the territory of Tatneft’s activity (for farming lands); a number of guidelines for reclamation of disturbed and oil-contaminated lands; standard plans for disturbed land reclamation including farming lands, forest lands, industrial lands, as well as a standard reclamation program (including biological reclamation).
Based on the soil and environmental surveys, a soil map has been generated for the South-East of Tatarstan. An electronic array has been developed comprising a number of parameters to draw up reclamation plans. Full-scale field and laboratory tests have been performed to compare the efficiency and environmental safety of new reclamation methods for oil-contaminated and saline soils against the conventional ones. It has been found that in case of high oil-contamination level the new biotechnologies proved to the most efficient in reducing oil products in soil to the allowable residual content over the shortest time, in recovering soil fertility and improving soil properties.
References
1. Ibatullin R.R., Mutin I.I., Iskhakova N.M. et al., Development of a standard for the permissible residual oil content and its transformation products in soil for leached chernozems of the Republic of Tatarstan (In Russ.), Interval, 2006, no. 2, pp. 10–16.
2. Shaydullina I.A., Normirovanie i minimizatsiya obrazovaniya i opasnosti neftezagryaznennykh pochv dlya prirodnoy sredy (na primere OAO “Tatneft'”) (Normalization and minimization of the formation and danger of oil contaminated soils for the natural environment (by the example of Tatneft)): thesis of candidate of chemical science, Kazan', 2006.
3. Order of the Ministry of Ecology and Natural Resources of the Republic of Tatarstan no. 786 from 22.07.09 “Ob ustanovlenii regional'nogo normativa “Dopustimoe ostatochnoe soderzhanie nefti i produktov ee transformatsii v pochve posle provedeniya rekul'tivatsionnykh i inykh vosstanovitel'nykh rabot na territorii Respubliki Tatarstan” (On the establishment of a Regional Standard "Allowable residual content of oil and its transformation products in the soil after remediation and other restoration works on the Republic of Tatarstan).
4. Order no. 303-p ot 14.07.11 “Ob utverzhdenii regional'nykh normativov “Dopustimoe ostatochnoe soderzhanie nefti i produktov ee transformatsii v svetlo-serykh i serykh lesnykh pochvakh Respubliki Tatarstan posle provedeniya rekul'tivatsionnykh i inykh vosstanovitel'nykh rabot dlya zemel' sel'skokhozyaystvennogo naznacheniya” (On approval of regional standards "Allowable residual oil content and its transformation products in light gray and gray forest soils of the Republic of Tatarstan after reclamation and other restoration works for agricultural land”).
5. Korn G.A., Korn T.M., Mathematical handbook for scientists and engineers: Definitions, theorems, and formulas for reference and review, General Publishing Company, 2000, 1151 p.
6. Shaydullina I.A., Yapparov A.Kh., Degtyareva I.D. et al., Rekul'tivatsiya neftezagryaznennykh pochv na primere vyshchelochennykh chernozemov Tatarstana (in Russ.), Neftyanoe khozyaystvo = Oil Industry, 2015, no. 3, pp. 102–105.
7. Malykhina L.V., Shaydullina I.A., Antonov N.A. et al., Recultivation of oil-contaminated lands by example of leached black humus earth of Tatarstan (An integrated approach to test biotech for remediation of oil-contaminated soil), Proceedings of TatNIPInefti, 2015, V. 83, pp. 313–318
