The problems of changing the absolute contents and ratios of trace elements in heavy oils and solid bitumens in the process of their hypergene transformation are considered. The geochemical features of hypergene vanadium-bearing naphthides in the Permian deposits of Tatarstan fields and the geological and tectonic conditions of formation and transformation of their accumulations are studied in detail. It is shown that the technology of borehole mining of viscous oils recovery should take into account the high content of toxic trace elements (V, Ni). For a more complete extraction of trace elements and to reduce the ecological impact on the environment the complex processing of such a hydrocarbon row material as hypergenically converted naphtides is needed.
Key words: naphtides, hypergenesis, trace elements, geochemistry.
References
1. Yakutseni S.P., Geologiya nefti i gaza - The journal Oil and Gas Geology, 2000, no. 1, pp. 56-59.
2. Belonin M.D., Shumeykin S.A., Yakutseni V.P., Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2004, no. 6, pp. 39-46.
3. Punanova S.A., Chakhmakhchev V.A. Eksperimental'nye issledovaniya preobrazovaniya mikroelementnogo sostava naftidov pri protsessakh ikh migratsii, katageneza i gipergeneza (Experimental studies of microelement composition of naphthides transformation in the processes of their migration, catagenesis and supergene), Modelirovanie neftegazoobrazovaniya (Simulation of oil and gas formation), Moscow: Nauka Publ., 1992, pp. 119-124.
4. Chakhmakhchev V.A., Punanova S.A. Lositskaya I.F., Obzornaya informatsiya ser. Neftegazovaya geologiya i geofizika (Overview. Oil and gas geology and geophysics), 1984, V. 11(70), 56 p.
5. Gol'dberg I.S. Prirodnye bitumy SSSR (Zakonomernosti formirovaniya i razmeshcheniya) (Natural bitumens of the USSR (Regularities formation and placement)), Leningrad: Nedra Publ., 1981, 195 p.
6. Gribkov V.V. Sbornik «Poputnye komponenty neftey i problemy ikh izvlecheniya» (Sbornik "By-products of petroleum and their extraction problems"), Leningrad: VNIGRI Publ., 1989, pp. 28-39.
7. Punanova S.A., Vinogradova T.L., Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2011, no. 10, pp. 27-30.
8. Permskie bitumy Tatarii (Permian bitumens of Tatarstan): edited by V.I. Troepol'skiy, Kazan': Kazanskiy universitet Publ., 1976, 212 p.
9. Yakutseni S.P. Rasprostranennost' uglevodorodnogo syr'ya, obogashchennogo tyazhelymi elementami-primesyami. Otsenka ekologicheskikh riskov (The prevalence of hydrocarbon-rich heavy elements impurities. Assessment of environmental risks), Sankt-Peterburg: Nedra Publ., 2005, 372 p.
10. Kayukova G.P. et al., Geochemistry of Permian Bitumen from Tatarstan, the 7th UNITAR International Conference on Heavy Crude and Tar Sands, Beijing, China, October 27-30 1998: Proceedings, V. 2, pp. 1567-1578.
11. Lobov V.A., Trudy Geologicheskogo instituta (Kazan'), 1970, V. 30, pp. 257-266.
12. Pavlov P.D., Voytovich E.D., Matrosov V.M., Sbornik «Neftenosnost' karbonatnykh kollektorov paleozoya Tatarii» (Oil bearing carbonate reservoirs of Paleozoic of Tatarstan), Bugul'ma, 1975, pp. 209-224.
13. Akishev I.M., Trudy instituta TatNIPIneft', 1987, V. 60, pp. 74-77.
14. Gubnitskiy V.M., Geologiya nefti i gaza - The journal Oil and Gas Geology, 1997, no. 2, pp. 14-18.
