Experimental and Numerical Study of Enhanced Condensate Recovery by Gas Injection in Shale Gas-Condensate Reservoirs
- Xingbang Meng (Texas Tech University) | James J. Sheng (Texas Tech University) | Yang Yu (Texas Tech University)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- May 2017
- Document Type
- Journal Paper
- 471 - 477
- 2017.Society of Petroleum Engineers
- shale gas condensate reservoir, condensate recovery, gas flooding, huff-n-puff
- 7 in the last 30 days
- 921 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 5.00|
|SPE Non-Member Price:||USD 35.00|
This paper examines the potential of huff ’n’ puff gas-injection method to recover condensate in shale gas-condensate reservoirs by conducting experiments on a shale core. Numerical models were developed to verify experiment results. Our laboratory study shows that condensate recovery was increased to 25% by applying huff ’n’ puff gas injection on a shale core. Also, we compared the efficiency of huff ’n’ puff gas injection with that of gasflooding. At the end of same flooding with time that is the same as the time for five huff ’n’ puff cycles, the condensate recovery is 19%. From the experimental results, we found that huff ’n’ puff was more effective than gasflooding. During the experiment, condensate accumulated near the production-end region. In the huff ’n’ puff process, because the location for injection in the core was the same as that for production, the pressure in the condensate region built up faster than pressure in the flooding experiment. Also, because of the ultralow permeability, the pressure propagation was much slower in the shale core than in a conventional reservoir core, and the efficiency of gasflooding is much lower than that of the huff ’n’ puff.
This study indicates that huff ’n’ puff has the potential to effectively enhance condensate recovery in shale gas-condensate reservoirs.
|File Size||1004 KB||Number of Pages||7|
Abel, W., Jackson, R. F., and Wattenbarger, R. A. 1970. Simulation of a Partial Pressure Maintenance Gas Cycling Project With a Compositional Model, Carson Creek Field, Alberta. J Pet Technol 22 (1): 38–46. SPE-2580-PA. https://doi.org/10.2118/2580-PA.
Akin, S. and Kovscek, A. R. 2003. Computed Tomography in Petroleum Engineering Research, Special Publications, 215, 23–38. London: Geological Society.
Al Ismail, M. I. and Horne, R. N. 2014. An Investigation of Gas-Condensate Flow in Liquid-Rich Shale. Presented at the SPE Unconventional Resources Conference, The Woodlands, Texas, USA. 1–3 April. SPE-169021-MS. https://doi.org/10.2118/169021-MS.
Ayyalasomayajula, P. S., Silpngarmlers, N., and Kamath, J. 2005. Well-Deliverability Predictions for a Low-Permeability Gas-Condensate Reservoir. Presented at the SPE Annual Technical Conference and Exhibition, Dallas, 9–12 October. SPE-95529-MS. https://doi.org/10.2118/95529-MS.
Computer Modelling Group (CMG). 2011a. GEM User’s Guide. Calgary: Computer Modelling Group Ltd.
Computer Modelling Group (CMG). 2011b. WinProp User’s Guide. Calgary: Computer Modelling Group Ltd.
Ganjdanesh, R., Rezaveisi, M., Pope, G. A. et al. 2015. Treatment of Condensate and Water Blocks in Hydraulic-Fractured Shale Gas-Condensate Reservoirs. Presented at the SPE Annual Technical Conference and Exhibition, Houston, 28–30 September. SPE-175145-MS. https://doi.org/10.2118/175145-MS.
Jessen, K. and Orr, F. M. 2003. Gas Cycling and the Development of Miscibility in Condensate Reservoirs. Presented at the SPE Annual Technical Conference and Exhibition, Denver, 5–8 October. SPE-84070-MS. https://doi.org/10.2118/84070-MS.
Labed, I., Oyeneyin, B., and Oluyemi, G. 2015. Hydraulic-Fracture Spacing Optimization for Shale Gas-Condensate Reservoirs Development. Presented at the SPE Offshore Europe Conference and Exhibition, Aberdeen, 8–11 September. SPE-175475-MS. https://doi.org/10.2118/175475-MS.
Meng, X. and Sheng, J. J., 2015. Simulation Study on Huff-n-Puff Gas Injection to Enhance Condensate Recovery in Fractured Shale Gas Reservoir. Presented at the 2015 AIChE Annual Meeting, Salt Lake City, Utah, USA, 3–13 November. Paper 431948.
Moradi, B., Tangsiri Fard, J., Rasaei, M. R. et al. 2010. Effect of Gas Recycling on the Enhancement of Condensate Recovery in an Iranian Fractured Gas/Condensate Reservoir. Presented at the Trinidad and Tobago Energy Resources Conference, Port of Spain, Trinidad, 27–30 June. SPE-132840-MS. https://doi.org/10.2118/132840-MS.
Roussennac, B. 2001. Gas Condensate Well Test Analysis. Dissertation, Stanford University, Stanford, California (June 2001).
Sanger, P. J. and Hagoort, J. 1998. Recovery of Gas-Condensate by Nitrogen Injection Compared With Methane Injection. SPE J. 3 (1): 26–33. SPE-30795-PA. https://doi.org/10.2118/30795-PA.
Sheng, J. J. 2015a. Increase Liquid Oil Production by Huff-n-Puff of Produced Gas in Shale Gas Condensate Reservoirs. Journal of Unconventional Oil and Gas Resources 11: 19–26. https://doi.org/10.1016/j.juogr.2015.04.004.
Sheng, J. J. 2015b. Enhanced Oil Recovery in Shale Reservoir by Gas Injection. Journal of Natural Gas Science and Engineering 22: 252–259. https://doi.org/10.1016/j.jngse.2014.12.002.
Sheng, J. J., Mody, F., Griffith, P. J. et al. 2016. Potential to Increase Condensate Oil Production by Huff-n-Puff Gas Injection in a Shale Condensate Reservoir. Journal of Natural Gas Science and Engineering 28: 46–51. https://doi.org/10.1016/j.jngse.2015.11.031.
Shi, C. and Horne, R. N. 2008. Improved Recovery in Gas-Condensate Reservoirs Considering Compositional Variations. Presented at the SPE Annual Technical Conference and Exhibition, Denver, 21–24 September. SPE-115786-MS. https://doi.org/10.2118/115786-MS.
Vo, H. X. 2010. Composition Variation During Flow of Gas-Condensate Wells. MS thesis, Stanford University, Stanford, California (September 2010).
Wheaton, R. J. and Zhang, H. R. 2000. Condensate Banking Dynamics in Gas Condensate Fields: Compositional Changes and Condensate Accumulation Around Production Wells. Presented at the SPE Annual Technical Conference and Exhibition, Dallas, 1–4 October. SPE-62930-MS. https://doi.org/10.2118/62930-MS.