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Geostochastic Modeling-Based Analysis of Sweep Efficiency Increase Resulting from Hydrofrac

Authors: R.Z. Sattarov (TatNIPIneft, RF, Bugulma)

Key words: computer-aided technologies, program module, computer-aided procedure, stochastic modeling, reservoir simulation, macroinhomogeneity, sweep efficiency increase, hydrofrac efficiency.

The paper presents the results of statistical regression analysis of hydraulic fracturing efficiency in discontinuous formations. Sweep efficiency was determined using stochastic lithological cubes built with the Irap RMS simulation package. It has been found that hydrofracturing is effective in discontinuous formations characterized by large number of permeable intervals in the section and small-sized sand lenses relative to distance between wells, i.e. hydrofrac efficiency increases with increase of macroinhomogeneity.
References
1. Abdulmazitov, R.G., Sattarov R.Z., Development of technologies of special
geological oilfield maps construction (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2008, no. 10, pp. 94–96.
2. Bad'yanov V.A., Metody komp'yuternogo modelirovaniya v zadachakh
neftepromyslovoy geologii (Methods of computer modeling in the petroleum
geology), Tyumen': Shadrinskiy Dom Pechati Publ., 2010, 135 p.
3. Usmanov T.S. et al., Impact analysis of hydraulic fracturing on oil recovery in the fields of "Yuganskneftegaz" (In Russ.), Tekhnologii TEK, 2005, no. 5 (24), pp. 48–55.
4. Zheltov Yu.P., Razrabotka neftyanykh mestorozhdeniy (Oilfield development), 2nd edition, Moscow: Nedra Publ., 1998, 365 p.
5. Nasybullin, A.V., Sattarov R.Z., Application of stochastic simulation to estimate the dependence of sweep efficiency on macroheterogeneity indicators
(In Russ.), Georesursy = International Journal of Sciences “Georesources”,
2014, no. 1 (56), pp. 51–53

Key words: computer-aided technologies, program module, computer-aided procedure, stochastic modeling, reservoir simulation, macroinhomogeneity, sweep efficiency increase, hydrofrac efficiency.

The paper presents the results of statistical regression analysis of hydraulic fracturing efficiency in discontinuous formations. Sweep efficiency was determined using stochastic lithological cubes built with the Irap RMS simulation package. It has been found that hydrofracturing is effective in discontinuous formations characterized by large number of permeable intervals in the section and small-sized sand lenses relative to distance between wells, i.e. hydrofrac efficiency increases with increase of macroinhomogeneity.
References
1. Abdulmazitov, R.G., Sattarov R.Z., Development of technologies of special
geological oilfield maps construction (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2008, no. 10, pp. 94–96.
2. Bad'yanov V.A., Metody komp'yuternogo modelirovaniya v zadachakh
neftepromyslovoy geologii (Methods of computer modeling in the petroleum
geology), Tyumen': Shadrinskiy Dom Pechati Publ., 2010, 135 p.
3. Usmanov T.S. et al., Impact analysis of hydraulic fracturing on oil recovery in the fields of "Yuganskneftegaz" (In Russ.), Tekhnologii TEK, 2005, no. 5 (24), pp. 48–55.
4. Zheltov Yu.P., Razrabotka neftyanykh mestorozhdeniy (Oilfield development), 2nd edition, Moscow: Nedra Publ., 1998, 365 p.
5. Nasybullin, A.V., Sattarov R.Z., Application of stochastic simulation to estimate the dependence of sweep efficiency on macroheterogeneity indicators
(In Russ.), Georesursy = International Journal of Sciences “Georesources”,
2014, no. 1 (56), pp. 51–53


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