Shale revolution led to the great results in the United States, and the same is in Russia. It has been already recognized that in the most of regions the number of traditional hydrocarbon traps has almost became obsolete. Research, studies of non-anticlinal hydrocarbon traps, among which the significant proportion relates to traps due to active faults, is being conducted: in the shelf area, in the Eastern and Western Siberia.
The special role of the fault is in the formation of the large aggregate of difficultly mapped hydrocarbon accumulations — tectonically dependent secondary accumulations. The effect of fault tectonics on fluid dynamics is obvious. Common features of the deposits assigned to tectonites are primarily related to bazhenites, which had been studied most of all among shale formations.
The process of ensuring safe exploration works in the conditions of the development of tectonites (bazhenites) includes two (as minimum) geologic elements:
comprehensive analysis of all the geological and geophysic material with regard to the identification and tracking of active faults and the local forecast of areas of their maximum influence — zones of abnormally high formation pressures;
implementation of design solutions with risk minimization during the construction of an exploration hole under the direct guidance by the geologist, who shall ensure safe opening of the formations with abnormally high formation pressure and completeness of geological study.
In order to avoid unjustified loss of time and money, to minimize risks, ensure the highest safety during search of shale hydrocarbons, it is required to organize coordination and cooperation of forces of all those involved in this complex process. And in the first instance, this must be implemented among the geological services of organizations.
The efficient solution of the problem will require conducting of the complete and objective revision of all the obsolete geological and geophysical material. This will clarify not only the further fate of the «obsolete» fields, but it will also facilitate the safer operation of oil and gas exploration at the new shale fields.
V.A. Karpov, Cand. Sci. (Geol.-Mineral.), Expert, email@example.com AOON, «NAEN», Moscow, Russia
1. Bagdasarova M.V. Specifics of the fluid systems of zones of oil and gas accumulation and geodynamic types of oil and gas fields. Geologiya nefti i gaza = Geology of Oil and Gas. 2001. № 3. pp. 50–56. (In Russ.).
2. Ryabukhin G.E., Baybakova G.A. Formation and oil and gas bearing of sedimentary basins in connection with genesis of rifts. Geologiya nefti i gaza = Geology of Oil and Gas. 1994. № 5. pp. 3–7. (In Russ.).
3. Muslimov R.Kh. New view on the development prospects of the supergiant Romashkin oil field. Geologiya nefti i gaza = Oil and Gas Geology. 2007. № 1. pp. 3–12. (In Russ.).
4. Bembel R.M., Megerya V.M., Bembel S.R. Geo-solitons: functional system of the Earth, the concept of exploration and development of hydrocarbon deposits. Tyumen: Vektor Buk, 2003. 224 p. (In Russ.).
5. Karpov V.A. On the thermobaric parameters of the hydrocarbon deposits as a reflection of tectonic features. Nedropolzovanie XXI vek = Subsoil Use of the XXI Century. 2014. № 4. pp. 81–83. (In Russ.).
6. Karpov V.A. The state and prospects of the development of oil and gas exploration in the Western Siberia. Geologiya nefti i gaza = Geology of Oil and Gas. 2012. № 3. pp. 2–6. (In Russ.).
7. Bespalova S.N., Bakuev O.V. Assessment of the effect of faults on the geological features of deposits and productivity of gas fields reservoir rocks in the Western Siberia. Geologiya nefti i gaza = Geology of Oil and Gas. 1995. № 7. pp. 16–21. (In Russ.).
8. Nassonova N.V., Romanchev M.A. Geodynamic control of oil and gas bearing capacity by strike-slip dislocations in the east of the Western Siberia. Geologiya nefti i gaza = Geology of Oil and Gas. 2011. № 4. pp. 8–14. (In Russ.).
9. Koroteev D., Dinariev O., Evseev N., Klemin D., Safonov S., Gurpinar O., Berg S., Van Kruijsdijk C., Myers M., Hathon L., De Jong H., Armstrong R. Application of Digital Rock Technology for Chemical EOR Screening, SPE-165258. Available at: https://www.onepetro.org/conference-paper/SPE-165258-MS (accessed: October 16, 2018).
10. Chugunov S.S., Kazak A.V., Cheremisin A.N. Integration of X-Ray Micro-Computed Tomography and Focused-Ion-Beam Scanning Electron Microscopy Data for Pore-Scale Characterization of Bazhenov Formation, Western Siberia. Available at: https://www.researchgate.net/publication/285793674_Integration_of_X-Ray_Micro-Computed_Tomography_and_Focused-Ion-Beam_Scanning_Electron_Microscopy_Data_for_Pore-Scale_Characterization_of_Bazhenov_Formation_Western_Siberia (accessed: October 16, 2018).
11. Lock P.A., Jing X.D., Zimmerman R.W., Schlueter E.M. Predicting the permeability of sandstone from image analysis of pore structure. Available at: https://www.researchgate.net/publication/234868954_Predicting_the_permeability_of_sandstone_from_image_analysis_of_pore_structure (accessed: October 16, 2018).
12. Gzovskiy M.V. Basics of tectonophysics. Moscow: Nauka, 1975. 536 p. (In Russ.).
13. Timurziev A.I. The newest pull-apart tectonics of sedimentary basins: tectonophysical and fluid-dynamic aspects (in connection with oil and gas content): autoabstract of the... Doctor of Geological and Mineralogical Sciences. Moscow: MGU im. M.V. Lomonosova, 2009. 40 p. (In Russ.).
14. Abukova L.A. Geofluiddynamics of deeply immersed zones of oil and gas accumulation. Fundamentalnyy bazis novykh tekhnologiy neftyanoy i gazovoy promyshlennosti = Fundamental Basis of New Technologies in Oil and Gas Industry. Iss. 2. Moscow: GEOS, 2002. pp. 78–85. (In Russ.).
15. Fenin G.I. Abnormal formation pressures in the hydrocarbon accumulation zones of oil and gas basins. Available at: http://www.ngtp.ru/rub/4/46_2010.pdf (accessed: October 16, 2018). (In Russ.).
16. Karpov V.A. Prospects for identifying new oil deposits within and near the old fields. Neftyanoe khozyaystvo = Oil Industry. 2012. № 3. pp. 20–23. (In Russ.).