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

Faults interpretation at the oil fields by wells-test data in the presence of hydrodynamic modeling errors. Part 4. Presence of errors in formation porosity and compressibility estimation of pore and oils

UDC: 622.276.1/.4.001.57
DOI: -

Authors:

¹ Scientific Research Institute for System Analysis of National Research Centre "Kurchatov Institute", Moscow, Russia
² Euroasian Union of Subsoil Use Experts, Moscow, Russia

Keywords: well tests, faults filtration description, errors in porosity, pore and oil compressibility estimations

Annotation:

Based on the data of computer hydrodynamic modeling, the possibility of identifying a fault and assessing its filtration characteristics in an oil field is considered according to the registration of a pressure stabilization curve (PSC) during the start-up of putting an exploratory well into operation which is located near the fault. The solution is found by comparing the PSC obtained experimentally and calculated for different filtration characteristics of the fault using the well-known reservoir parameters. The influence of the error when estimating one of coefficients – or porosity, or pore isothermal compressibility, or oil isothermal compressibility – on the result of the abovementioned comparison has been studied. It is shown that as a result of such procedure the fault under investigation can be ranged in one of three classes: i) impermeable screen; ii) high permeable channel with permeability 100 times and more higher than formation permeability; iii) permeable channel with permeability value in-between its characteristic levels of classes i) and ii) – regardless to errors when estimating any of investigated coefficients.

Bibliography:

1. Vyyavlenie tektonicheskikh razlomov na neftyanykh mestorozhdeniyakh po dannym gidrodinamicheskikh issledovaniy skvazhin pri nalichii pogreshnostey gidrodinamicheskogo modelirovaniya. Chast’ 1. Pogreshnosti v otsenke effektivnykh tolshchin / V.A. Yudin, S.G. Vol’pin, N.P. Efimova [i dr.] // Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy. – 2023. – № 11(383). – S. 46–55. – DOI: 10.33285/2413-5011-2023-11(383)-46-55

2. Vyyavlenie razlomov na neftyanykh mestorozhdeniyakh po dannym gidrodinamicheskikh issledovaniy skvazhin pri nalichii pogreshnostey gidrodinamicheskogo modelirovaniya. Chast’ 2. Pogreshnosti v otsenke vyazkosti / V.A. Yudin, S.G. Vol’pin, K.D. Ashmyan [i dr.] // Neftepromyslovoe delo. – 2023. – № 11(659). – S. 28–35. – DOI: 10.33285/0207-2351-2023-11(659)-28-35

3. Vyyavlenie razlomov na neftyanykh mestorozhdeniyakh po dannym gidrodinamicheskikh issledovaniy skvazhin pri nalichii pogreshnostey gidrodinamicheskogo modelirovaniya. Chast’ 3. Otsenka sluchaynoy pribornoy pogreshnosti izmereniy zaboynogo davleniya / S.G. Vol’pin, A.K. Ponomarev, I.V. Afanaskin [i dr.] // Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy. – 2024. – № 9(393). – S. 39–46.

4. Lesnoy A.N. Issledovanie vliyaniya diz"yunktivnykh narusheniy v yurskikh otlozheniyakh na stroenie zalezhey neftyanykh mestorozhdeniy Kogalymskogo neftegazonosnogo rayona: dis. … kand. geol.-mineral. nauk. – M., 2015. – 178 s.

5. Cherepanov E.A. Metodicheskoe obespechenie obrabotki i interpretatsii dannykh geofizicheskikh issledovaniy skvazhin s tsel’yu postroeniya seysmogeologicheskikh modeley terrigennykh otlozheniy Zapadnoy Sibiri: dis. … kand. geol.-mineral. nauk. – Tyumen’, 2018. – 132 s.

6. Latyshova M.G., D’yakonova T.F., Tsirul’nikov V.P. Dostovernost’ geofizicheskoy i geologicheskoy informatsii pri podschete zapasov nefti i gaza. – M.: Nedra, 1986. – 120 s.

7. Krasnopol’skaya A.V., Zhukov V.S. Povyshenie tochnosti opredeleniya poristosti kollektorov po dannym sopostavleniya "KERN–GIS" // Gornyy informatsionno-analiticheskiy byulleten’ (nauchno-tekhnicheskiy zhurnal). – 2009. – № 2. – S. 93–97.

8. Latysheva M.G., Vendel’shteyn B.Yu., Tuzov V.P. Obrabotka i interpretatsiya materialov geofizicheskikh issledovaniy skvazhin. – M.: Nedra, 1990. – 312 s.

9. Opredelenie emkostnykh svoystv i litologii porod v razrezakh neftegazovykh skvazhin po dannym radioaktivnogo i akusticheskogo karotazha". Nastavlenie po interpretatsii s komplektom paletok. – Kalinin: VNIIGIK, 1984. – 110 s.

10. Hall H.N. Compressibility of Reservoir Rocks // Petroleum Transaction AIME. –1953. – Vol. 198. – Pp. 309–311.

11. Fatt I. Pore Volume Compressibilities of Sandstone Reservoir Rocks // Journal of Petroleum Technology. – 1958. – Vol. 10. – № 3. – Pp. 64–66. – DOI: 10.2118/970-g

12. Vygodskiy E.M. Rezul’taty opredeleniya koeffitsientov szhimaemosti peschanikov Bashkirii // Trudy UfNII. – № 5. – Ufa: Nedra, 1969. – S. 22–28.

13. Vliyanie termobaricheskikh usloviy na fizicheskie svoystva porod Shatlykskogo mestorozhdeniya / Ya.R. Morozovich, O.N. Abramova, A.A. Khanin [i dr.] // Trudy MINKhiGP im. I.M. Gubkina. – № 123–124. – M.: Nedra, 1977. – S. 204–210.

14. Avchan G.M., Matveenko A.A., Stefankevich Z.B. Petrofizika osadochnykh porod v glubinnykh usloviyakh. – M.: Nedra, 1979. – 224 s.

15. Mamuna V.N., Trebin G.F., Ul’yaninskiy B.V. Eksperimental’noe issledovanie plastovykh neftey. – M.: GOSINTI, 1960. – 143 s.

16. OST 153-39.2-048-2003. Neft’. Tipovoe issledovanie plastovykh flyuidov i separirovannykh neftey.