Effect of Fluid Type and Multiphase Flow on Sand Production in Oil and Gas Wells
- Haotian Wang (University of Texas at Austin) | Deepen P. Gala (University of Texas at Austin) | Mukul M. Sharma (University of Texas at Austin)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- April 2019
- Document Type
- Journal Paper
- 733 - 743
- 2019.Society of Petroleum Engineers
- non-Darcy effect, multi-phase flow, sand production, fluid type, water evaporation
- 15 in the last 30 days
- 206 since 2007
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Controlled laboratory experiments and some field studies have shown that the onset of sand production in gas wells differs from that in oil wells. Results from a general 3D sand-production numerical model are presented to explain the differences in the onset of sanding and sand-production volume for different fluids and under different flow and in-situ stress conditions. The sand-production model accounts for multiphase-fluid flow and is fully coupled with an elasto-plastic geomechanical model. The sanding criterion considers both mechanical failure and sand erosion by fluid flow. Non-Darcy flow is implemented to account for the high flow rates. The drag forces on the sand grains are computed on the basis of the in-situ Reynolds number. Both the intact rock strength and the residual rock strength depend on water saturation. Water evaporation (drying) resulting from gas flow is modeled using phase equilibrium calculations.
The onset of sand production is compared for different fluid types (oil and gas). Model results are shown to be consistent with experimental observations reported in the literature. For example, the onset of sanding is observed at higher compressive stresses for gas wells as compared with oil wells. The primary mechanism for this is for the first time shown to be sand strengthening induced by evaporation of water. This effect is not observed in oil wells. The sand-production rate when non-Darcy effects are considered is lower than for Darcy flow. The reason for this is the lower fluid velocity (for the same drawdown) and, consequently, smaller drag forces on the failed sand grains. The effect of water breakthrough and water cut on sand production is studied from both mechanical and erosion perspectives. The model is shown to be capable of accurately predicting the onset of sanding and sand production induced by multiphase- and compressible-fluid flows, helping us to predict sanding issues in both oil and gas wells.
|File Size||638 KB||Number of Pages||11|
Bird, R. B., Stewart, W. E., and Lightfoot, E. N. 2002. Transport Phenomena, second edition. New York: John Wiley & Sons, Inc.
Buck, A. L. 1981. New Equations for Computing Vapor Pressure and Enhancement Factor. J. Appl. Meteorol. 20: 1527–1532. https://doi.org/10.1175/1520-0450(1981)020<1527:NEFCVP>2.0.CO;2.
Cerasi, P., Berntsen, A., Walle, L. E. et al. 2015. Sand Production Delay in Gas Flow Experiments. Presented at the 49th US Rock Mechanics Symposium, San Francisco, California, 28 June–1 July. ARMA-2015-246.
Chang, Y.-B. 1990. Development and Application of an Equation of State Compositional Simulator. PhD dissertation, University of Texas at Austin, Austin, Texas.
Gala, D. P. and Sharma, M. M. 2017. Effect of Fluid Type and Composition on Changes in Reservoir Stresses Due to Production: Implications for Refracturing. Proc., US Rock Mechanics /Geomechanics Symposium, San Francisco, California, 25–28 June. ARMA-2017-0042.
Gala, D. P. and Sharma, M. M. 2018. Compositional and Geomechanical Effects in Huff-n-Puff Gas Injection IOR in Tight Oil Reservoirs. Presented at the SPE Annual Technical Conference and Exhibition, Dallas, 24–26 September. SPE-191488-MS. https://doi.org/10.2118/191488-MS.
Gala, D. P., Manchanda, R., and Sharma, M. M. 2018. Modeling of Fluid Injection in Depleted Parent Wells to Minimize Damage Due to Frac-Hits. Presented at the Unconventional Resources Technology Conference (URTEC), Houston, 23–25 July. URTEC-2881265-MS. https://doi.org/10.15530/URTEC-2018-2881265.
Hawkins, A. B. and McConnell, B. J. 1992. Sensitivity of Sandstone Strength and Deformability to Changes in Moisture Content. Q. J. Eng. Geol. Hydrogeol. 25 (2): 115–130. https://doi.org/10.1144/GSL.QJEG.1992.025.02.05.
Mahadevan, J., Sharma, M. M., and Yortsos, Y. C. 2006. Flow-Through Drying of Porous Media. AIChE J. 52 (7): 2367–2380. https://doi.org/10.1002/aic.10859.
Masoumi, H., Horne, J., and Timms, W. 2017. Establishing Empirical Relationships for the Effects of Water Content on the Mechanical Behavior of Gosford Sandstone. Rock Mech. Rock Eng. 50: 2235–2242. https://doi.org/10.1007/s00603-017-1243-x.
Rijken, M. C. M., Cameron, J. A., Jones, C. et al. 2014. Estimating Sand Production Volume in Oil and Gas Reservoir. Presented at the SPE Annual Technical Conference and Exhibition, Amsterdam, The Netherlands, 27–29 October. SPE-170814-MS. https://doi.org/10.2118/170814-MS.
Skjaerstein, A., Tronvoll, J., Santarelli, F. J. et al. 1997. Effect of Water Breakthrough on Sand Production: Experimental and Field Evidence. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 5–8 October. SPE-38806-MS. https://doi.org/10.2118/38806-MS.
Tronvoll, J., Dusseault, M., Sanfilippo, F. et al. 2001. The Tools of Sand Management. Presented at the SPE Annual Technical Conference and Exhibition, New Orleans, 30 September–3 October SPE-71673-MS. https://doi.org/10.2118/71673-MS.
Vasarhelyi, B. and Van, P. 2006. Influence of Water Content on the Strength of Rock. Eng. Geol. 84 (1–2): 70–74. https://doi.org/10.1016/j.enggeo.2005.11.011.
Vaziri, H., Barree, B., Xiao, Y. et al. 2002. What Is the Magic of Water in Producing Sand? Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 29 September–2 October. SPE-77683-MS. https://doi.org/10.2118/77683-MS.
Wang, H., Cardiff, P., and Sharma, M. M. 2016. A 3-D Poro-Elasto-Plastic Model for Sand Production Around Open-Hole and Cased & Perforated Wellbores. Presented at the 50th US Rock Geomechanics Symposium, Houston, 26–29 June. ARMA-2016-251.
Wu, Y.-S., Li, J., Ding, D. et al. 2014. A Generalized Framework Model for the Simulation of Gas Production in Unconventional Gas Reservoirs. SPE J. 19 (5): 845–857. https://doi.org/10.2118/163609-PA.
Zhou, Z., Cai, X., Cao, W. et al. 2016. Influence of Water Content on Mechanical Properties of Rock in Both Saturation and Drying Processes. Rock Mech. Rock Eng. 49 (8): 3009–3025. https://doi.org/10.1007/s00603-016-0987-z.