Quantitative Analysis of the Effect of Perforation Interaction on Perforation Stability Using the Finite Element Method
- Naoto Araki (JX Nippon Oil Exploration (USA) Limitted) | Nobuo Morita (Texas A&M University)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- October 2020
- Document Type
- Journal Paper
- 2,234 - 2,250
- 2020.Society of Petroleum Engineers
- perforation interaction, perforation stability, the finite element method
- 12 in the last 30 days
- 55 since 2007
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Oil and gas reservoirs are normally completed as either openhole or perforated wells. Although a perforated well has hundreds of perforations, a single perforation is normally used for perforation interaction analysis, assuming the perforations are shot symmetrically and the stress state around a perforation is symmetric in both vertical and horizontal directions. However, for the single/double spiral perforations shot in inclined wells, no vertical and horizontal symmetry surfaces exist. The required elements for a multiperforation model are more than 10,000, which results in complex mesh generation and long computation time. In this study, we investigate perforation interaction to find the optimal perforation design that yields the highest productivity while maintaining mechanical stability. The practical implications of this work to the field are (1) the drawdown to cause perforation instability for gas flow is significantly less than oil flow. Therefore, when the gas flow becomes dominant either by enhanced oil recovery with CO2 or by low bottomhole flowing pressure below bubblepoint, the drawdown should be reduced to avoid sand production. (2) For inclined wells, the X-shaped staggered orientation perforations are the best pattern to delay onset of sand production without significantly reducing the well productivity. (3) For near-vertical wells, the conventional nonstaggered perforation pattern delays the onset of sand production due to the stress reduction in the vertical direction compared with the commonly used staggered perforation patterns.
|File Size||2 MB||Number of Pages||17|
Ansah, J., Proette, M. A., and Soliman, M. Y. 2002. Advances in Well Completion Design: A New 3D Finite-Element Wellbore Inflow Model for Optimizing Performance of Perforated Completions. Paper presented at the SPE International Symposium and Exhibition on Formation Damage Control, Lafayette, Louisiana, USA, 20–21 February. SPE-73760-MS. https://doi.org/10.2118/73760-MS.
Behrmann, L. A., Pucknell, J. K., and Bishop, S. R. 1992. Effects of Underbalance and Effective Stress on Perforation Damage in Weak Sandstone: Initial Results. Paper presented at the SPE Annual Technical Conference and Exhibition, Washington, DC, USA, 4–7 October. SPE-24770-MS. https://doi.org/10.2118/24770-MS.
Bell, W. T., Sukup, R. A., and Tariq, S. M. 1995. Perforating, Vol. 16. Richardson, Texas, USA: Monograph Series, Society of Petroleum Engineers.
Castro, G. C. J. and Havmoller, O. 2008. Rock Type and Hole Failure Pattern Effects on Sand Production. Paper presented at the 42nd U.S. Rock Mechanics Symposium (USRMS), San Francisco, California, USA, 29 June–2 July. ARMA-08-217.
Deo, M., Tariq, S. M., and Halleck, P. M. 1989. Linear and Radial Flow Targets for Characterizing Downhole Flow in Perforations. SPE Prod Eng 4 (3): 295–300. SPE-16896-PA. https://doi.org/10.2118/16896-PA.
Karakas, M. and Tariq, S. M. 1991. Semianalytical Productivity Models for Perforated Completions. SPE Prod Eng 6 (1): 73–82. SPE-18247-PA. https://doi.org/10.2118/18247-PA.
Papamichos, E., Stenebraten, J., Cerasi, P. et al. 2008. Rock Type and Hole Failure Pattern Effects on Sand Production. Paper presented at the 42nd US Rock Mechanics Symposium (USRMS), San Francisco, California, USA, 29 June–2 July. ARMA-08-127.
Wang, H. and Sharma, M. 2017. The Role of Elasto-Plasticity in Cavity Shape and Sand Production in Oil and Gas Wells. Paper presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, USA, 9–11 October. SPE-187225-MS. https://doi.org/10.2118/187225-MS.
Zoback, M. D. 2007. Reservoir Geomechanics. Cambridge, England, UK: Cambridge University Press.