Evaluating the Impact of Lateral Landing, Wellbore Trajectory and Hydraulic Fractures to Determine Unconventional Reservoir Productivity
- Piyush Pankaj (Schlumberger) | Priyavrat Shukla (Schlumberger) | Ge Yuan (Schlumberger) | Xu Zhang (Schlumberger)
- Document ID
- Society of Petroleum Engineers
- SPE Europec featured at 80th EAGE Conference and Exhibition, 11-14 June, Copenhagen, Denmark
- Publication Date
- Document Type
- Conference Paper
- 2018. Society of Petroleum Engineers
- 2 Well completion, 5.5 Reservoir Simulation, 5 Reservoir Desciption & Dynamics, 2.5.2 Fracturing Materials (Fluids, Proppant), 1.6.6 Directional Drilling, 0.2 Wellbore Design, 0.2.2 Geomechanics, 2.4 Hydraulic Fracturing, 3 Production and Well Operations, 5.2 Reservoir Fluid Dynamics, 1.6 Drilling Operations, 2.4.1 Fracture design and containment
- planar 3D, lateral landing, Unconventional reservoirs, well productivity, well trajectory
- 9 in the last 30 days
- 582 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 9.50|
|SPE Non-Member Price:||USD 28.00|
Inconsistent production performance from wells completed in similar pay zones has been observed when shale formations are exploited through horizontal wells. Ineffective completion practices, fracture design, and reservoir heterogeneity have generally been blamed for the variability in the performance. Limited importance has been attached to drilling quality and well trajectory placement in the current approaches by the operators. The objective of this study is to demonstrate an engineered lateral landing approach for improved long-term productivity in the unconventional reservoirs.
Coupling the reservoir model to the wellbore and accounting for the transient flow behavior are important for improving deliverability in horizontal wells. The study in this paper encompasses a field case study of a geocellular and geomechanical earth model in the Permian basin, which involves hydraulic fracturing modeling, reservoir simulation, fluid flowback, and transient wellbore flow modeling. Pressure losses accounted for in the reservoir, in the near-wellbore region, and in the wellbore profile are modeled and calibrated with bottomhole and surface gauge measurements. Complex hydraulic fracture geometry and numerical reservoir simulation are used to characterize the pressure losses in the reservoir. Transient wellbore fluid flow considerations are used to evaluate the pressure losses in the wellbore.
Based on the fracturing fluid type, the conductivity profile of the hydraulic fractures, connection to the wellbore, and coverage of the pay zone are important criteria in considering the landing location for wells in unconventional reservoirs. However, having the most effective hydraulic fracture design is not enough to decide the well trajectory. Mitigating liquid loading, fluid flowback, proppant settling, and cross-flow of reservoir fluid helps to diagnose the true production potential. Therefore, transient flow models were coupled to the reservoir and fracture models to design a more-effective well trajectory.
The study demonstrates the need to couple the wellbore model to the reservoir simulation and hydraulic fracturing model in shale formations to optimize well landing, trajectory profile, and long-term productivity.
The methodology provides the first integrated data workflow for well drilling and trajectory planning in unconventional reservoirs that is generated from the perspective of reservoir potential and deliverability. Although variances exist in completion effectiveness due to reservoir heterogeneity, applying the robust modeling workflow as discussed in this study would help deliver consistent results that can be used in field management and EUR estimates across various shale basins.
|File Size||4 MB||Number of Pages||33|
Adachi, J., Siebrits, E., Peirce, A.. 2007. Computer Simulation of Hydraulic Fractures. International Journal of Rock Mechanics and Mining 44 (5): 739-757. https://doi.org/10.1016Zj.ijrmms.2006.11.006.
Advani, S. H., Lee, T. S., and Lee, J. K. 1990 Three-Dimensional Modeling of Hydraulic Fractures in Layered Media: Finite Element Formulations. Journal of Energy Resources Technology 112: 1-18. https://doi.org/10.1115Z1.2905706.
Barree, R. D. 1983. A Practical Numerical Simulator for Three-Dimensional Hydraulic Fracture Propagation in Heterogeneous Media. Presented at the SPE Reservoir Simulation Symposium, San Francisco, California, USA, 15-18 November. SPE-12273-MS. https://doi.org/10.2118/12273-MS.
Clifton, R. J. and Abou-Sayed, A.S. 1979. On the Computation of the Three-Dimensional Geometry of Hydraulic Fractures. Presented at the Symposium on Low Permeability Gas Reservoirs, Denver, Colorado, USA, 20-22 May. SPE-7943-MS. https://doi.org/10.2118/7943-MS.
Collins, D. R., Monson, G., Chu, W.. 2015. An Integrated Approach to Stimulated Reservoir Interpretations of the Permian Wolfcamp Shale. Presented at the Unconventional Resources Technology Conference, San Antonio, USA, 20-22 July. URTEC-2154510-MS. https://doi.org/10.15530/URTEC-2015-2154510
Dick, K. C., Hnat, J., Cakici, D.. 2013. Geological Methods for Evaluation in a Brave New World - Unconventional Reservoir Monitoring. Presented at the Unconventional Resources Technology Conference, Denver, Colorado, USA, 12-14 August. https://doi.org/10.1190/urtec2013-028.
Engle, M., Reyes, F., Varonka, M.. 2016. Geochemistry of Formation Waters from the Wolfcamp and "Cline" Shales: Insights into Brine Origin, Reservoir Connectivity, and Fluid Flow in the Permian Basin, USA. Chemical Geology 425: 76-92. https://doi.org/10.1016Zj.chemgeo.2016.01.025.
Gu, H. and Leung, K. H. 1993. 3D Numerical Simulation of Hydraulic Fracture Closure with Application to Minifracture Analysis. J Pet Technol 45 (3): 206-211. SPE-20657-PA. https://doi.org/10.2118/20657-PA.
Jackson, D. F. B., Virues, C. J. J., and Sask, D. 2011. Investigation of Liquid Loading in Tight Gas Horizontal Wells with a Transient Multiphase Flow Simulator. Presented at the Canadian Unconventional Resources Conference, Calgary, Alberta, Canada, 15-17 November. SPE-149477- MS. https://doi.org/10.2118/149477-MS.
Lane, W. and Chokshi, R. 2014. Considerations for Optimizing Artificial Lift in Unconventionals. Presented at the Unconventional Resources Technology Conference, Denver, Colorado, 25-27 August. URTEC- 1921823-MS. https://doi.org/10.15530/URTEC-2014-1921823.
Lehman, L. V., Andress, R., Mullen, M.. 2015. Delaware Basin Bone Springs. A Study of the Evolving Completion Practices to Create an Economically Successful Play. Presented at the SPE Asia Pacific Unconventional Resources Conference and Exhibition, Brisbane, Australia, 9-11 November. SPE-176828-MS. https://doi.org/10.2118/176828-MS.
McFall, R., Mullen, K., Baihly, J. 2017. Refracturing in the Eagle Ford Shale: One Operator's Quest to Identify and Rank Candidates, Minimize Well Interference, and Understand Variability of Results. Presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, Austin, Texas, 24-26 July. URTEC-2691375-MS. https://doi.org/10.15530/URTEC-2017-2691375.
McLennan, J., Walton, I., Moore, J.. 2015. Proppant Backflow: Mechanical and Flow Considerations. US Department of Energy Report DOE-UofU-18189-1. https://doi.org/10.2172/1356661.
Mohan, K., Scott, K. D., Monson, G. D.. 2013. A Systematic Approach to Understanding Well Performance in Unconventional Reservoirs: A Wolfcamp Case Study. Presented at the Unconventional Resources Technology Conference, Denver, Colorado, USA, 12-14 August. https://doi.org/10.1190/urtec2013-051.
Morita, N., Whitfill, D.L., and Wahl, H.A. 1988. Stress-Intensity Factor and Fracture CrossSectional Shape Predictions from a Three-Dimensional Model for Hydraulically Induced Fractures, J Pet Technol 40 (10): 1329-1342. SPE-14262-PA. https://doi.org/10.2118/14262-PA.
Noe, S., & Crafton, J. W. 2013. Impact of Delays and Shut-Ins on Well Productivity. Presented at the SPE Eastern Regional Meeting, Pittsburgh, Pennsylvania, USA, 20-22 August. SPE-165705- MS. https://doi.org/10.2118/165705-MS.
Norris, H. L. 2012. The Use of a Transient Multiphase Simulator to Predict and Suppress Flow Instabilities in a Horizontal Shale Oil Well. Presented at the PSE Annual Technical Conference and Exhibition, San Antonio, Texas, USA, 8-10 October. SPE-158500-MS. https://doi.org/10.2118/158500-MS.
Peirce, A. and Siebrits, E. 2001. Uniform Asymptotic Assumptions for Accurate Modeling of Cracks in Layered Elastic Media. International Journal of Fracture 110 (3): 205-239. https://doi.org/10.1023/a:1010861821959.
Peirce, A. 2005. Localized Jacobian ILU Preconditioners for Hydraulic Fractures. International Journal for Numerical Methods in Engineering 65 (12): 1935-1946. https://doi.org/10.1002/nme.1528.
Potapenko, D. I., Williams, R. D., Desroches, J., . 2017. Securing Long-Term Well Productivity of Horizontal Wells Through Optimization of Postfracturing Operations. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, USA, 9-11 Octover. SPE-187104-MS. https://doi.org/10.2118/187104-MS.
Qiu, F., Yuan, G., Marongiu-Porcu, M.. 2016. Sinuosity of the Hydraulic Fractured Horizontal Well Impact on Production Flow Assurance: An Eagle Ford Case. Presented at the SPE Hydraulic Fracturing Technology Conference, The Woodlands, Texas, USA, 9-11 February. SPE-179168- MS. https://doi.org/10.2118/179168-MS.
Schlumberger. 2016. AvantGuard. https://www.slb.com/~/media/Files/production/productsheets/productiontesting/avantguard-flowback-services-ps.pdf (accessed 5 March 2018).
Settari, A. and Cleary, M. 1984. Three-Dimensional Simulation of Hydraulic Fracturing. J Pet Technol 36 (7): 1177-1190. SPE-10504-PA. https://doi.org/10.2118/10504-PA.
Suarez-Rivera, R., Von Gonten, W. D., Graham, J.. 2016. Optimizing Lateral Landing Depth for Improved Well Production. Presented at the Unconventional Resources Technology Conference, San Antonio, Texas, 1-3 August. URTEC-2460515-MS. https://doi.org/10.15530/urtec-2016-2460515.
Vincent, M. C., and Besler, M. R. 2013. Declining Frac Effectiveness - Evidence that Propped Fractures Lose Conductivity, Surface Area, and Hydraulic Continuity. Presented at the Unconventional Resources Technology Conference, Denver, Colorado, USA, 12-14 August. https://doi.org/10.1190/urtec2013-073.
Yuan, G., Narvaez, D. A., Xue, H. 2017. Well Trajectory Impact on Production from ESP-Lifted Shale Wells: A Case Study. Presented at the SPE Electric Submersible Pump Symposium, The Woodlands, Texas, USA, 24-28 April. SPE-185145-MS. https://doi.org/10.2118/185145-MS.