1887

Abstract

Summary

Unlike the conventional gas injection modes of CGI and WAG, the Gas Assisted Gravity Drainage (GAGD) process takes advantage of natural segregation of reservoir fluids to provide gravity stable oil displacement. Therefore, CO2 has been considered for immiscible injection in the Wasson Oil Field, located at West Texas. The GAGD process has been applied using the compositional reservoir simulation and PVT modeling to reduce the water cut and increase oil recovery.

The GAGD process consists of placing a horizontal producer near the bottom of the payzone and injecting gas through existing vertical wells that have been used in prior waterfloods. As the injected gas rises to the top to form a gas zone, oil and water drain down to the horizontal producer.

In this study, compositional simulations of GAGD process and regular CO2 miscible flooding have been done on the Wasson Oil Field. A five-spot with 4 vertical injectors and one horizontal producer has been considered for regular CO2 injection and GAGD process in five years of production, respectively. The Latin Hypercube sampling has been adopted for generating multiple simulation runs in order to find out the most influential factors affecting the flow responses and to get the optimal solution.

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/content/papers/10.3997/2214-4609.201412722
2015-06-01
2024-04-25
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References

  1. Rao, D.N., Ayirala, S.C. and Kulkarni, M.M.
    [2004] Development of Gas-Assisted Gravity Drainage (GAGD) Process for Improved Light Oil Recovery. SPE 89357, 2004 SPE/DOE Symposium on Improved Oil Recovery, Tulsa, Oklahoma, USA (April 17–21 2004).
    [Google Scholar]
  2. Kulkarni, M.M. and Rao, D.N.
    [2006] Analytical Modeling of the Forced Gravity Drainage GAGD Process. AIChE 72361, AIChE Annual Meeting, San Francisco, CA, USA (12–17 November 2006).
    [Google Scholar]
  3. Mahmoud, T.N. and Rao, D.N.
    [2007] Mechanisms and Performance Demonstration of the Gas-Assisted Gravity-Drainage Process Using Visual Models. SPE 110132, SPE Annual Technical Conference and Exhibition, Anaheim, California (11–14 November 2007).
    [Google Scholar]
  4. Kulkarni, M.M.
    [2003] Immiscible and Miscible Gas-Oil Displacements in Porous Media. M.S. Thesis, The Craft & Hawkins Department of Petroleum Engineering, Louisiana State University and A & M College, Baton Rouge, LA, Aug2003.
    [Google Scholar]
  5. Sharma, A. and Rao, D. N.
    [2008] Scaled Physical Model Experiments to Characterize the Gas-Assisted Gravity Drainage EOR Process. SPE 113424, SPE Symposium on Improved Oil Recovery, Tulsa, Oklahoma, USA (20–23 April 2008).
    [Google Scholar]
  6. Rao, D.N. et al.
    [2006] Development and Optimization of Gas Assisted Gravity Drainage (GAGD) process for improved light oil recovery. United States Department of Energy Research Proposal, Report Number 15323R15, Final Technical Report. National Energy Technology Laboratory, United States Department of Energy, 2006.
    [Google Scholar]
  7. Mahmoud, T.N. and Rao, D.N.
    [2008] Range of Operability of Gas-Assisted Gravity Drainage Process. SPE 113474, SPE Symposium on Improved Oil Recovery, Tulsa, Oklahoma, USA (20–23 April 2008).
    [Google Scholar]
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