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Abstract

Abstract

Tight oil production is emerging as an important new source of energy supply and has reversed a decline in U.S. crude oil production and Western Canadian light oil production. At present, combination of the multistage hydraulic fracturing and horizontal wells has become a widely used technology in stimulating tight oil reservoirs. However, the ideal planar fractures used in the reservoir simulation are excessively simplified. Effects of some key fracture properties, such as facture geometry distributions and permeability change, are usually not taken into consideration during the simulation. Over simplified fractures in the reservoir model may fail to represent the complex fractures in reality, leading to significant errors in forecasting the reservoir performance. In this paper, we examined the different fracture geometry distributions and further discussed the effects of geometry distribution on well productions. All fracture geometry scenarios are confined by the microseismic mapping data. To make the result more reliable and relevant, a geo-model was first constructed for a tight oil block in Willesden Green oil field, AB, Canada. The simulation model was then generated based on the geo-model and history-matched. A horizontal well was drilled in the simulation model and different fracture geometry scenarios were analyzed. Results indicate that the simulation results of simple planar fractures overestimate the oil rate and lead to relatively higher oil recoveries. In addition, the effect of hydraulic fracture geometries under the higher fracture conductivity is more significant compared to those under lower fracture conductivity.

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/content/papers/10.2118/167761-MS
2014-02-25
2024-04-27
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References

  1. Kabir, C.S., Rasdi, F., and Igboalisi, B.
    , Analyzing Production Data from Tight Oil Wells; Journal of Canadian Petroleum Technology, 50(5): 48–58, 2011.
    [Google Scholar]
  2. Legrand, N., de Kok, J., Neff P., and Clemens, T.
    , Recovery Mechanisms and Oil Recovery From a Tight, Fractured Basement Reservoir, Yemen; SPE Reservoir Evaluation & Engineering, 14(4): 473–484, 2011.
    [Google Scholar]
  3. Priyantoro, T.A., Prakoso, N.F., and Kahfie, R.M.
    , Journey of Hydraulic Fracturing Improvement to Increase Oil Recovery from Sandstone Formation in Rimau Block; paper SPE 156550 presented at SPE International Production and Operations Conference & Exhibition, Doha, Qatar, May 14–16, 2012.
    [Google Scholar]
  4. H.Bahrami and J.Siavoshi.
    , Interpretation of Reservoir Flow Regimes and Analysis of Welltest Data in Hydraulically Fractured Unconventional Oil and Gas Reservoirs. Paper SPE 164033 presented at SPE Middle East Unconventional Gas Conference & Exhibition, Muscat, Sultanate of Oman, 28–30 Jan, 2013.
    [Google Scholar]
  5. S. M.Ghaderi, C. R.Clarkson, D.Kaviani
    . Investigation of Primary Recovery in Tight Oil Formations: A Look at the Cardium Formation, Alberta. Paper SPE 148995 presented at Canadian Unconventional Resources Conference, Alberta, Canada, 15–17 November, 2011.
    [Google Scholar]
  6. F.O.Iwere, Robin N,Heim, B. V.Cherian
    . Numerical Simulation of Enhanced Oil Recovery in the Middle Bakken and Upper Three Forks Tight Oil Reservoirs of the Williston Basin. Paper SPE 154937 presented at SPE Americas Unconventional Resources Conference, Pittsburgh, Pennsylvania USA, 5–7 June, 2012.
    [Google Scholar]
  7. Eric S.Sennhauser, Shunyi (Jimmy)Wang, Xiangping (Mike)Liu
    . A Practical Numerical Model to Optimize the Productivity of Multistage Fractured Horizontal Wells in the Cardium Tight Oil Resource. Paper SPE 146443 presented at Canadian Unconventional Resources Conference. Alberta, Canada, 15–17 November, 2011.
    [Google Scholar]
  8. DavidQuirk, Ali S.Ziarani, ScottMills, KevinWagner, CheneyChen
    .Integration of Microseismic Data, Fracture and Reservoir Simulation into the Development of Fractured Horizontal Wells in the Cardium Formation-A Tight Oil Case Study. Paper SPE 160002 presented at SPE Annual Technical Conference and Exhibition, San Antonio, Texas, USA, 8–10 October, 2012.
    [Google Scholar]
  9. X.Liu, Z.Q.Zhou, X.W.Li, Z.X.Li, Y.G.Xu, B.C.Chen
    ., Understanding Hydraulic Fracture Growth in Tight Oil Reservoirs by Integrating Microseismic Mapping and Fracture Modeling. Paper SPE 102372 presented at International Oil & Gas Conference and Exhibitionin Beijing, China, 5–7 December, 2006.
    [Google Scholar]
  10. Fischer, T., Hainzl, S., Eisner, L., Shapiro, S.A., & LeCalvez
    , Microseismic signatures of hydraulic fracture growth in sediment formations: Observations and modeling; Journal of Geophysical Research, 113(B2):B0230, 2008.
    [Google Scholar]
  11. E.Stalgorova, L.Mattar
    ., Practical Analytical Model to Simulate Production of Horizontal Wells with Branch Fractures. Paper SPE 162515 presented at SPE Canadian Unconventional Resources Conference, Calgary, Alberta, Canada, 30 October-1 November, 2012.
    [Google Scholar]
  12. EkaterinaStalgorova, LouisMattar
    , Analytical Model for Unconventional Multifractured Composite Systems. SPE Reservoir Evaluation & Engineering, 16(3):246–256, 2013.
    [Google Scholar]
  13. F.F.Krause, K.B.Deutsch, S.D.Joiner, J.E.Barclay, R.L.Hall, L.V.Hills
    ., Cretaceous Cardium Formation of the Western Canada Sedimentary Basin. Alberta Geological Survey, 1994. http://www.ags.gov.ab.ca/publications/SPE/PDF/SPE_004/low_res/chapter_23.pdf
    [Google Scholar]
  14. Roxana M.Varga, John C.Bancroff, Robert R.Stewart
    . Inversion and Interpretation of Multicomponent Seismic Data: Willesden Green, Alberta. Paper SEG 2007–1943 presented at SEG Annual Meeting, San Antonio, Texas. September 23 – 28, 2007.
    [Google Scholar]
  15. LucMageau, KristopherZack, Matthew.S., GordonS., VincentUrness
    , Assessing the Cardium’s Sencond Generation-A look at Horizontal Well Performance by Area, Canada Research published by Raymond James Ltd, 2012. http://www.raymondjames.ca/en_ca/equity_capital_markets/equity_research/sample_research/docs/Junior%20Oil%20&%20Gas%20Producers.pdf.
    [Google Scholar]
  16. MohammadN. A., and Miskimins, J.L.
    , A Comparison of Hydraulic-Fracture Modeling With Downhole and Surface Microseismic Data in a Stacked Fluvial Pay System, SPE Production & Operations, Volume 27, Number 3, pp. 253–264, August 2012Aguilera, Roberto., Geologic aspects of naturally fractured reservoirs. The Leading Edge 17.12:1667–1670, 1998.
    [Google Scholar]
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