Mechanism Analysis of Well Interference in Unconventional Reservoirs: Insights From Fracture-Geometry Simulation Between Two Horizontal Wells
- Kan Wu (Texas A&M University) | Biyi Wu (Beijing Institute of Technology) | Wei Yu (Texas A&M University)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- February 2018
- Document Type
- Journal Paper
- 12 - 20
- 2018.Society of Petroleum Engineers
- well interference, well spacing, multi-stage fracturing treatments, displacement discontinuity mehtod, hydraulic fracture modeling
- 13 in the last 30 days
- 863 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 12.00|
|SPE Non-Member Price:||USD 35.00|
Well interference is a common phenomenon between wells observed in unconventional reservoirs, which has received significant attention. It plays an important role in well-spacing considerations.
Massive hydraulic fractures are generated in horizontal wells by multistage hydraulic-fracturing treatments and result in well interference between adjacent wells. However, very little work has been completed to understand how massive fractures cause well interference. In this study, we analyzed dynamic-stress evolution and multiple-fracture propagation from two horizontal wells to improve understanding of fracture hits.
We used our newly developed nonplanar hydraulic-fracturing model that couples rock deformation and fluid flow in the fracture and horizontal wellbore. Fracture propagation in a stage is controlled by stress-shadow effects and flow-rate distribution between fractures. Fracture interaction within a stage and from adjacent wells is considered through a simplified 3D displacement discontinuity method. Well interference is well communication caused by fracture hits. Because of varying stress reorientation, fractures propagate toward each other from two adjacent wells, and fracture tips always tend to converge with each other and decrease fracture distance, which promotes fracture coalescence. For plug-and-perforate completion, multiple fractures in a stage generally cannot uniformly develop. Dominant fractures with extremely long length are often generated and hit fractures from adjacent wells. Fracture hits and well interference are induced by these two mechanisms, which are affected by fracture spacing and the differential stress (DS) of reservoirs. Results show that the larger the fracturing spacing is, the smaller the likelihood is to induce fracture connection. A large DS can prevent fractures from deviating from their original paths. For a reservoir with a large DS, fracture hits can be decreased with a stagger distance of fractures between two wells. This work uses a hydraulic-fracturing model to analyze fracture geometry between two horizontal wells and offers improved understanding of fracture connection. The results of the study provide critical insights to improve well interference and to optimize well spacing and design of multiwell completion techniques.
|File Size||1 MB||Number of Pages||9|
Ajani, A. and Kelkar, M. 2012. Interference Study in Shale Plays. Presented at the SPE Hydraulic Fracturing Technology Conference, The Woodlands, Texas, USA, 6–8 February. SPE-151045-MS. https://doi.org/10.2118/151045-MS.
Algadi, O. A., Castro, L., and Mittal, R. 2015. Comparison of Single-Entry Coiled Tubing-Activated Frac Sleeves vs. Multi-Cluster Plug-and-Perf. Completion in the Permian andAnadarko Basin: ACase Study. Presented at the SPE Annual Technical Conference and Exhibition, Houston, 28–30 September. SPE-174943-MS. https://doi.org/10.2118/174943-MS.
Awada, A., Santo, M., Lougheed, D. et al. 2016. Is That Inference? A Work Flow for Identifying and Analyzing Communication Through Hydraulic Fractures in a Multiwell Pad. SPE J. 21 (5): 1554–1566. SPE-178509-PA. https://doi.org/10.2118/178509-PA.
Dahi-Taleghani, A. and Olson, J. E. 2011. Numerical Modeling of Multistrand Hydraulic Fracture Propagation: Accounting for the Interaction Between Induced and Natural Fractures. SPE J. 16 (3): 575–581. SPE-124884-PA. https://doi.org/10.2118/124884-PA.
Fu, P., Scott, M. J., and Carrigan, R. C. 2013. An Explicitly Coupled Hydro-Geomechanical Model for Simulating Hydraulic Fracturing in Arbitrary Discrete Fracture Networks. International Journal for Numerical and Analysis Methods in Geomechanics 37 (14): 2278–2300. https://doi.org/10.1002/nag.2135.
King, G. E. and Valencia, R. L. 2016. Well Integrity for Fracturing and Re-Fracturing: What Is Needed and Why? Presented at the SPE Hydraulic Fracture Technology Conference, The Woodlands, Texas, USA, 9–11 February. SPE-179120-MS. https://doi.org/10.2118/179120-MS.
Kim, J. and Moridis, G. J. 2015. Numerical Analysis of Fracture Propagation During Hydraulic Fracturing Operations in Shale Gas Systems. International Journal of Rock Mechanics & Mining Sciences 76: 127–137. https://doi.org/10.1016/j.ijrmms.2015.02.013.
Kresse, O., Weng, X., Wu, R. et al. 2012. Numerical Modeling of Hydraulic Fracturing Interaction in Complex Naturally Fractured Formations. Presented at the 46th US Rock Mechanics/Geomechanics Symposium, Chicago, 24–27 June. ARMA 12-292.
Lehmann, J., Budge, J., Palghat, A. et al. 2016. Expanding Interpretation of Interwell Connectivity and Reservoir Complexity Through Pressure Hit Analysis and Microseismic Integration. Presented at the SPE Hydraulic Fracture Technology Conference, The Woodlands, Texas, USA, 9–11 February. SPE-179173-MS. https://doi.org/10.2118/179173-MS.
Lindner, P. and Bello, H. 2015. Eagle Ford Well Spacing: A Methodology to Integrate, Analyze, and Visualize Multisource Data in Solving a Complex Value-Focused Problem. Presented at the Unconventional Resources Technology Conference, San Antonio, Texas, USA, 20–22 July. URTeC-2174709-MS. https://doi.org/10.15530/URTeC-2015-2174709.
Nagel, N. B., Sanchez-Nagel, M., and Lee, B. 2012. Gas Shale Hydraulic Fracturing: A Numerical Evaluation of the Effect of Geomechanical Parameters. Presented at the SPE Hydraulic Fracturing Technology Conference and Exhibition, The Woodlands, Texas, USA, 6–8 February. SPE-152192-MS. https://doi.org/10.2118/152192-MS.
Nolte, K. G. 1991. Fracture Pressure Analysis for Nonideal Behavior. J Pet Technol 43 (2): 210–218. SPE-20704-PA. https://doi.org/10.2118/20704-PA.
Olson, Jon E. and Wu, K. 2012. Sequential Versus Simultaneous Multizone Fracturing in Horizontal Wells: Insights From a Non-planar, Multi-frac Numerical Model. Presented at the SPE Hydraulic Fracturing Technology Conference, The Woodlands, Texas, USA, 6–8 February. SPE-152602-MS. https://doi.org/10.2118/152602-MS.
Peirce, A. P. and Bunger, A. P. 2015. Interference Fracturing: Nonuniform Distributions of Perforation Clusters That Promote Simultaneous Growth of Multiple Hydraulic Fractures. SPE J. 20 (2): 1–12. SPE-172500-PA. https://doi.org/10.2118/172500-PA.
Portis, D. H., Bello, H., Murray, M. et al. 2013. Searching for the Optimal Well Spacing in the Eagle Ford Shale: A Practical Tool-Kit. Presented at the Unconventional Resources Technology Conference, Denver, 12–14 August. URTeC-1581750. https://doi.org/10.1190/urtec2013-027.
Rezaei, A., Rafiee, M., Soliman, M. et al. 2015. Investigation of Sequential and Simultaneous Well Completion in Horizontal Wells Using a Non-Planar, Fully Coupled Hydraulic Fracture Simulator. Presented at the 49th US Rock Mechanics/Geomechanics Symposium, San Francisco, 28 June–1 July. ARMA- 2015-449.
Rimedio, M., Shannon, C., Monti, L. et al. 2015. Interference Behavior Analysis in Vaca Muerta Shale Oil Development, Loma Campana Field, Argentina. Presented at the Unconventional Resources Technology Conference, San Antonio, Texas, USA, 20–22 July. URTeC-2154850. https://doi.org/10.2118/178620-MS.
Roussel, N. P., Florez, H. A., and Rodriguez, A. A. 2013. Hydraulic Fracture Propagation From Infill Horizontal Wells. Presented at the SPE Annual Technical Conference and Exhibition, New Orleans, 30 September–2 October. SPE-166503-MS. https://doi.org/10.2118/166503-MS.
Sahai, V., Jackson, G., Lawal, H. et al. 2015. A Quantitative Approach to Analyze Fracture-Area Loss in Shale Gas Wells During Field Development and Restimulation. SPE Res Eval & Eng 18 (3): 346–355. SPE-169406-PA. https://doi.org/10.2118/169406-PA.
Sardinha, C., Petr, C., Lehmann, J. et al. 2014. Determining Interwell Connectivity and Reservoir Complexity Through Frac Pressure Hits and Production Interference Analysis. Presented at the SPE/CSUR Unconventional Resources Conference-Canada, Calgary, 30 September–2 October. SPE-171628-MS. https://doi.org/10.2118/171628-MS.
Savitski, A. A., Lin, M., Riahi, A. et al. 2013. Explicit Modeling of Hydraulic Fracture Propagation in Fractured Shales. Presented at the International Petroleum Technology Conference, Beijing, 26–28 March. IPTC-17073-MS. https://doi.org/10.2523/IPTC-17073-MS.
Scott, K. D., Chu, W. C., and Flumerfelt, R. W. 2015. Application of Real-Time Bottom Hole Pressure to Improve Field Development Strategies in the Midland Basin Wolfcamp Shale. Presented at the Unconventional Resources Technology Conference, San Antonio, Texas, USA, 20–22 July. URTeC-2154675.
Singh, G., Pencheva, G., Kumar, T. et al. 2014. Impact of Accurate Fractured Reservoir FlowModeling on Recovery Predictions. Presented at the SPE Hydraulic Fracturing Technology Conference, The Woodlands, Texas, 4–6 February. SPE-168630-MS. https://doi.org.10.2118/168630-MS.
Weng, X. 2015. Modeling of Complex Hydraulic Fractures in Naturally Fractured Formation. Journal of Unconventional Oil and Gas Resources 9: 114–135. https://doi.org/10.1016/j.juogr.2014.07.001.
Wu, K. and Olson, J. E. 2015a. A Simplified Three-Dimensional Displacement Discontinuity Method for Multiple Fracture Simulations. International Journal of Fracture 193 (2): 191–204. https://doi.org/10.1007/s10704-015-0023-4.
Wu, K., and Olson, J. E. 2015b. Simultaneous Multi-Frac Treatments: Fully Coupled Fluid Flow and Fracture Mechanics for Horizontal Wells. SPE J. 20 (2): 337–346. SPE-167626-PA. https://doi.org/10.2118/167626-PA.
Wu, K. and Olson, J. E. 2016. Mechanisms of Simultaneous Growth of Hydraulic Fractures From Multiple Perforation Clusters in Horizontal Wells: Insights From a Three-Dimensional Fracture Propagation Model. SPE J. 21 (3): 1000–1008. SPE-178925-PA. https://doi.org/10.2118/178925-PA.
Wu, K., Olson, J., Balhoff, M. T. et al. 2017. Numerical Analysis for Promoting Uniform Development of Simultaneous Multiple-Fracture Propagation in Horizontal Wells. SPE Prod & Oper 32 (1): 41–50. SPE-174869-PA. https://doi.org/10.2118/174869-PA.
Yaich, E., Diaz de Souza, O. C., Foster, R. A. et al. 2014. A Methodology to Quantify the Impact of Well Interference and Optimize Well Spacing in the Marcellus Shale. Presented at the SPE/CSUR Unconventional Resources Conference–Canada, Calgary, 30 September–October. SPE-171578-MS. https://doi.org/10.2118/171578-MS.