Hydraulic Fracture Design in the Presence of Highly-Stressed Layers: A Case Study of Stress Interference in a Multi-Horizontal Well Pad
- Kenji Ueda (INPEX Corporation) | Shintaro Kuroda (INPEX Corporation) | Adrian Rodriguez-Herrera (Schlumberger) | Xavier Garcia-Teijeiro (Schlumberger) | Doug Bearinger (Nexen Energy ULC) | Claudio J. J. Virues (Nexen Energy ULC) | Hiroyuki Tokunaga (INPEX Corporation) | Dai Makimura (Schlumberger) | Jurgen Lehmann (Nexen Energy ULC) | Christopher Petr (Nexen Energy ULC) | Kimikazu Tsusaka (INPEX Corporation) | Tatsuo Shimamoto (INPEX Corporation)
- Document ID
- Society of Petroleum Engineers
- SPE Hydraulic Fracturing Technology Conference and Exhibition, 23-25 January, The Woodlands, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2018. Society of Petroleum Engineers
- 4 Facilities Design, Construction and Operation, 2.4.1 Fracture design and containment, 2 Well completion, 4.1 Processing Systems and Design, 2.4 Hydraulic Fracturing, 1.6.6 Directional Drilling, 3 Production and Well Operations, 4.1.2 Separation and Treating, 1.10 Drilling Equipment, 3 Production and Well Operations, 1.10 Drilling Equipment, 1.6 Drilling Operations
- Stacked height growth model, hydraulic fracturing, stress shadow, vertical stress changes, highly stress layers
- 7 in the last 30 days
- 628 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 9.50|
|SPE Non-Member Price:||USD 28.00|
A design of hydraulic fracturing in variably-stressed zones is one of key components for an effective multi-zone, multi-horizontal well pad treatment. In the recent literature, optimum completion strategies catering for stimulation-induced in-situ stress changes are discussed, however, only few of these focus on vertical stress changes and its impact on multi-zone fracture geometries. In this paper, we present an approach to design contained hydraulic fractures in a high stress layers by studying the role of vertical stress shadowing on actual field data.
In modeling hydraulic fractures with pseudo-3D models, if fracture simulations are initiated in high stress zones, "artificially" unbounded height growth results in very limited lateral propagation. On the other hand, 3D hydraulic fracturing models are too computationally expensive to optimize large design jobs, for example, in multi-horizontal well pads. In this paper, we employ a Stacked Height Growth Model, whereby fractures are also discretized vertically yet retain the numerical formulation pseudo-3D models. Coupling with finite element stress solvers then allows to identify vertical stress changes in the vicinity of induced hydraulic fractures and to understand the interference between hydraulic fracture sequences and their respective microseismic signatures.
Considering a potential combination of fracturing sequences, it was revealed that stress perturbations from the neighboring well hydraulic fractures initiating from low stress layers can be used to increase stress within the same zone and also potentially reduce stresses in higher-stress layers above and below. By modeling and calibrating an actual multi-zone, multi-horizontal stimulation job, we elaborate on the benefits of increasing stress barriers before fracturing in higher-stress layer to avoid the chances of re-fracturing from high stress zones. Regarding hydraulic fracture geometries, we explain our results by analyzing actual microseismic observations with respect to simulated stress patterns after stimulation. We explore the notion of deliberately ordering hydraulic fracture to manage vertical interference and create more contained fractures in a multi-zone horizontal well pad.
Fracturing in a higher-stress zone will naturally divert the energy into low stress, potentially unproductive zones. In an effort to manage this phenomenon, this paper presents one of the few data-rich case studies on multi-zone, multi-well engineered stimulation design. The approach shown in this paper can be a helpful reference to understand fracture height growth in the presence of both vertical and horizontal stress shadowing.
|File Size||1 MB||Number of Pages||24|
Olson, J.E. 2004. Predicting fracture swarms &- the influence of subcritical height growth and the crack-tip process zone on joint spacing in rock. In: The initiation, propagation, and arrest of joints and other fractures, eds. Cosgrove,J.W. and Engelder,T. Vol.231. Geological Society of London Special Publication, London, 73&-88.
Rogers, S., Elmo, D., Dunphy, R. and Bearinger, D. 2010. Understanding Hydraulic Fracture Geometry and Interactions in the Horn River Basin Through DFN and Numerical Modeling. Paper SPE 137488 presented at the SCU/SPE Canadian Unconventional Resources and International Petroleum Conference, Calgary, Alberta, 19-21 October.
Sardinha, C.M., Petr, C., Lehmann, J., Pyecroft, J. F and Merkle, S. 2014. Determining Interwell Connectivity and Reservoir Complexity Through Frac Pressure Hits and Production Interference Analysis. Paper SPE 171628 presented at the SPE/CSUR Unconventional Resources Conference, Calgary, Alberta, 30 September &- 2 October.
Shokri,Rangriz,A.Chalaturnyk, R. J., Bearinger, D., Virues, C. and Lehmann, J. 2017. Constraining the Complexity of Stimulated Reservoir Volume during Multi-Stage Hydraulic Fracturing of Horizontal Wells through Inter-Well Pressure Hit Modeling. Paper SPE 187188 presented at the SPE Annual Technical Conference and Exhibition, Sanantonio, Texas, 9-11 October.
Virues, C., Shimamoto, T., & Kuroda, S. 2015. Understanding Fracture Geometry of the Canadian Horn River Shale Gas via an Unconventional Complex Fracture Propagation Model in Multi-Staged Pad with 9 Horizontal Wells. Paper SPE 175933 presented at the SPE/CSUR Unconventional Resources Conference, Calgary, Alberta, 20-22 October.
Bazan,Lucas W., Meyer,Bruce R. 2015. Fracture Complexity: Analysis Methodology and Signature Pressure Behavior of Hydraulic Fracture Propagation from Horizontal Wellbores. 2015. Paper SPE 176919 presented at the SPE Asia Pacific Unconventional Resources Conference and Exhibition, Brisbane, Australia, 9-11 November.
Cohen, C., Kresse, O., and Weng, X. 2017. Stacked Height Model to Improve Fracture Height Growth Prediction, and Simulate Interactions With Multi-Layer DFNs and Ledges at Weak Zone Interfaces. Paper SPE 184876 presented at the SPE Hydraulic Fracturing Technology Conference and Exhibition, The Woodlands, Texas, 24-26 January.
Holder, J., Morita, N., Kenrick, A. J., Thallak, S. and Gray, K. E. 1993. Measurements of Effective Fracture Toughness Values for Hydraulic Fracture: Dependence on Pressure and Fluid Rheology. Paper SPE 25491 presented at the SPE Production Operations Symposium, Oklahoma City, Oklahoma. 21-23 March.
Kresse, O., Weng, X. and Mohammadnejad, T. 2017. Modeling the Effect of Fracture Interference on Fracture Height Growth by Coupling 3D Displacement Discontinuity Method in Hydraulic Fracture Simulator. ARMA 2017-0741, 51st U.S. Rock Mechanics/Geomechanics Symposium, San Francisco, California, 25-28 June.
Lehmann, J., Budge, J., Palghat, A., Petr, C. and Pyecroft, J. 2016. Expanding Interpretation of Interwell Connectivity and Reservoir Complexity through Pressure Hit Analysis and Microseismic Integration. Paper SPE 179173 presented at the SPE Hydraulic Fracturing Technology Conference, The Woodlands, Texas, 9-11 February.
Weijers, L., Griffin, L. G., Sugiyama, H., Shimamoto, T., Takada, S., Chong, K. K. and Wright, C. A. 2002. The First Successful Fracture Treatment Campaign Conducted in Japan: Stimulation Challenges in a Deep, Naturally Fractured Volcanic Rock. Paper SPE 77678 presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 29 September-2 October.
Yu, W., Xu, Y., Weijermars, R., Wu, K., Sepehrnoori, K. 2017. Impact of Well Interference on Shale Oil Production Performance: A Numerical Model for Analyzing Pressure Response of Fracture Hits with Complex Geometries. Paper SPE 184825 presented at the SPE Hydraulic Fracturing Technology Conference and Exhibition, The Woodlands, Texas, 24-26 January.