«Geology, geophysics and development of oil and gas fields»

Integrated methodological approaches to core analysis of unconventional reservoirs in order to determine their petroleum potential prospects and further development in Belarus Republic

UDC: 553.98(476)
DOI: -

Authors:

¹ Production Association Belorusneft, BelNIPIneft, Gomel, Belarus
² Production Association Belorusneft, Gomel, Belarus

Keywords: hard-to-recover reserves, unconventional reservoirs, Eletz-Petrikovskiy age deposits, laboratory-based core analysis, prospects for oil-and-gas potential, mineral composition, pyrolysis, oil source rock, mixed type reservoir

Annotation:

With the general tendency of hydrocarbon resource base quality decline, the Republic of Belarus is ramping momentum of activities aimed at comprehensive studying and developing of hard-to-recover reserves including so-called "unconventional" reservoirs of "shale type" in the deposits of the Upper Devonian intersalt complex (D3el-D3ptr), characterized by the regional spreading within the limits of Pripyat oil- and gas-bearing territory. The strategy of studying and developing hard-to-recover reserves of Elets-Petrikovskiy age Production Association "Belorusneft" is primarily aimed at the objects with good infrastructure and proved petroleum potential. Carbonate deposits of I-III packs of Rechitskoye oilfield and adjacent territories are one of the objects of interest.

Within the framework of fulfilling a complex project directed at localization, estimation and development of that object, a full complex of laboratory studies on core material of 14 wells (lithological-sedimentological, mineralogical, geochemical, pyrolytical, petrophysical, geomechanical) was performed. Based on the results obtained, mineralogical, petrophysical, geochemical, geomechanical and lithological-facial models were built; geological model refinement, resource base assessment and correction of wells fund location were carried out.

Bibliography:

1. K otsenke zapasov i resursov slantsevoy nefti / S.I. Bilibin, G.A. Kalmykov, N.S. Balushkina [i dr.] // Nedropol’zovanie XXI vek. – 2015. – №1(51). – S. 34–45.

2. Geokhimicheskaya kharakteristika organicheskogo veshchestva mezhsolevykh otlozheniy severnogo bloka Pripyatskogo neftegazonosnogo basseyna / E.A. Vtorushina, T.D. Bulatov, M.G. Kul’kov [i dr.] // Geologiya nefti i gaza. – 2020. – № 5. – S. 83–94.

3. Tektonika Belorussii / R.G. Garetskiy, R.E. Ayzberg, Z.A. Gorelik [i dr.] / Pod red. R.G. Garetskogo. – Minsk: Nauka i tekhnika, 1976. – 200 s.

4. Makfi K., Rid Dzh., Zubizaretta I. Laboratornye issledovaniya kerna: gid po luchshim praktikam. – M.–Izhevsk: Izd-vo "IKI", 2018. – 924 s.

5. Neruchev S.G., Vassoevich N.B., Lopatin N.V. O shkale katageneza v svyazi s nefteobrazovaniem // Goryuchie iskopaemye. – M.: Nauka, 1976. – S. 47–52.

6. Espitalie J., Bordenave M.L. Rock-Eval pyrolysis. In: M.L. Bordenave (Editor). Applied Petroleum Geochemistry. – Paris: Technip ed., 1993. – Pp. 237–361.

7. Flugel E. Microfacies of Carbonate Rocks. Analisys, Interpretation and Application. – Springer, 2004. – 976 р.

8. Peters K.E., Cassa M.R. Applied source rock Geochemistry. In: L.B. Magoon, W.G. Dow. The Petroleum system – From source to trap // APPG Memoir 60. – Tulsa, Oklahoma, 1994. – Pp. 93–117.