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Substantiation of the Fault-Block Structure for Effective Additional Exploration and Development of the West-Kommunarsky Field

M.A. Lobusev, A.V. Bochkarev, G.Yu. Rachkova

Original article

DOI https://doi.org/10.18599/grs.19.3.19

272-278
rus.
eng.

open access

Under a Creative Commons license

While the seismic exploration and methodological geological interpretation of geological data for drilling various wells and other types of research are improved for a significant part of the fields being developed in the Samara Region, the reliability of the structure of geological and recoverable oil and gas reserves increases. The complication of the structure and multiple recalculations of reserves at a number of fields are due to the introduction into the development of undiscovered to the required conditions of complex geological fields and licensed areas. The example of the West-Kommunarsky field shows how its geological structure becomes more complex as its study becomes more extensive. Thus, the oil reservoir in the Lower Paschian sediments, according to the created integrated model, has horizontal positions, but with different levels of water-oil contact in adjacent blocks separated by downthrows. The justification of disjunctive dislocations, which have been planned but not tracked due to their uncertainty in seismic data and determination of their main characteristics, was performed by stratigraphic correlation of well sections using the rules of projective geometry and confirmed by other traditional methodical methods. With each new tectonic movement along the strike-slip, a near-faul fracture of rocks is formed parallel to it, as a reflection of geodynamic stresses and energy-intensive processes in the downthrows and strike-slips of rocks along the fault plane. Near-fault regular changes in the fracturing of rocks and the dependence of well productivity on their location relative to the disjunctive make it possible to predict the latitudinal reservoirs zonation in near-fault area: fractured, porous-fractured, fractured-porous and porous types. Such a dialectical process of movement towards a real model of the field ensures the reliability of revised reserves and updated technological documents for the development of fields.

strike-slip, disjunctive dislocations, well productivity, fault-block model, water-oil contact

  • Ashirov K.B., Borgest T.M., Karev K.L. Obosnovanie prichin mnogokratnoi vospolnyaemosti zapasov nefti i gaza na razrabatyvaemykh mestorozhdeniyakh Samarskoi oblasti [Substantiation of the reasons for the multiple replenishment of oil and gas reserves in the developed fields of the Samara Region]. Izvestiya Samarskogo nauchnogo tsentra RAN. Geologiya, gefizika i geokhimiya [Bulletin of the Samara Scientific Center of the Russian Academy of Sciences. Geology, geophysics and geochemistry]. 2001. No. 1. Pp.167-173. (In Russ.)
  • Bochkarev V.A., Bochkarev A.V. Sbrosy i neftegazonosnost’ [Discharges and oil and gas potential]. Moscow: VNIIOENG Publ. 2016. 428 p. (In Russ.)
  • Golf-Rakht T. D. Osnovy neftepromyslovoi geologii i razrabotki tre-shchinovatykh kollektorov [The fundamentals of oilfield geology and the development of fractured reservoirs]. Moscow: Nedra Publ. 1986. 608 p. (In Russ.)
  • Karpov V.A. Razlom – kak ob’ekt izucheniya pri neftegazopoiskovykh rabotakh [Fault – as an object of study in oil and gas exploration]. Nedropolzovanie XXI vek [Subsoil use – XXI Century]. 2011. No.6. Pp. 66‑70. (In Russ.)
  • Kopylov V.E., Bronskova E.I, Bochkarev A.V. Utochnenie geologicheskogo stroeniya Vostochno-Pereval’nogo mestorozhdeniya dlya effektivnoi razrabotki zalezhi Ach1-2 [Clarification of geological structure of the East-Perevalnoye field for the effective development of the Ach1-2 deposit]. Neftepromyslovoe delo. 2015. No.10. Pp.4-9. (In Russ.)
  • Lobusev A.V., Lobusev M.A., Antipova Yu.A., Osin D.A., Strakhov P.N. Vozmozhnosti ispol’zovaniya dannykh seismorazvedki dlya prognozirovaniya kollektorskikh svoistv produktivnykh otlozhenii Tympuchikanskogo mestorozhdeniya [Possibilities of using seismic data to predict the reservoir properties of productive deposits of the Tympuchikansky field]. Territorija NEFTEGAZ = Oil and Gas Territory. 2014a. No.3. Pp. 18-23. (In Russ.)
  • Lobusev A.V., Lobusev M.A., Strakhov P.N., Novyi podkhod k otsenke i prognozu produktivnosti neftegazonasyshchennykh porod [A new approach to the assessment and forecast of productivity of oil and gas saturated rocks]. Akademicheskii zhurnal Zapadnoi Sibiri [Academic Journal of Western Siberia]. 2014b. No.2(51). Vol. 10. Pp. 45-47. (In Russ.)
  • Shilov G.Ya Dostovernaya identifikatsiya razlomov – klyuch k povysheniyu effektivnosti neftegazopoiskovykh rabot [Authentic identification of faults is the key to increasing the efficiency of oil and gas exploration]. Nedropolzovanie XXI vek [Subsoil use – XXI Century]. 2012. No.6. Pp.60-63. (In Russ.)

Gubkin Russian State University of Oil and Gas (National Research University), Moscow, Russia

For citation:

Lobusev M.A., Bochkarev A.V., Rachkova G Yu. Substantiation of the Fault-Block Structure for Effective Additional Exploration and Development of the West-Kommunarsky Field. Georesursy = Georesources. 2017. V. 19. No. 3. Part 2. Pp. 272-278. DOI: https://doi.org/10.18599/grs.19.3.19