A Case Study of Completion Effectiveness in the Eagle Ford Shale Using DAS/DTS Observations and Hydraulic Fracture Modeling
- B. Wheaton (Devon Energy Corporation) | K. Haustveit (Devon Energy Corporation) | W. Deeg (Devon Energy Corporation) | J. Miskimins (Barree & Associates, LLC) | R. Barree (Barree & Associates, LLC)
- Document ID
- Society of Petroleum Engineers
- SPE Hydraulic Fracturing Technology Conference, 9-11 February, The Woodlands, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2016. Society of Petroleum Engineers
- 2 Well completion, 4.1 Processing Systems and Design, 4.1.2 Separation and Treating, 1.10 Drilling Equipment, 5.6.11 Reservoir monitoring with permanent sensors, 3 Production and Well Operations, 5.8.4 Shale Oil, 4 Facilities Design, Construction and Operation, 2.5 Hydraulic Fracturing, 2.2.2 Perforating, 2.2 Completion Installation and Operations, 1.10 Drilling Equipment
- Modeling, Distributed Temperature Sensing, Fracturing, Distributed Accousting Sensing, Eagle Ford
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The objective of this study was to evaluate treatment distribution and fracture geometry in a multi-stage, multi-cluster fracture completion performed in a horizontal Eagle Ford well. Distributed Acoustic Sensing (DAS) and Distributed Temperature Sensing (DTS) data were acquired on the subject well. The DAS/DTS-observed fracture treatment distributions were then modeled in a three-dimensional fracture model in an effort to visually represent resultant fracture geometries. This process was used to evaluate the impacts on the resulting treatment distributions that occurred as a result of stress-shadowing between fractures. The ultimate goal was to understand the influence that adjacent fractures within a stage and adjacent stages have on fracture distribution, fracture geometry, and completion effectiveness.
DAS/DTS data suggest a high level of interference between adjacent fractures. Interference between adjacent fractures within a given stage, and from adjacent fracture stages, results in a consistent geometric predominance for fracture growth in the most heel-ward perforation cluster. DAS/DTS results also indicate that an excessive number of perforation clusters, spaced closely together, magnify the negative effects of stress shadowing, and potentially diminish completion effectiveness.
Operationally, the DAS/DTS data showed that the surface pressure response originally attributed to downhole diversion from particulate diverters was in fact not due to diversion. Once a dominate fracture was established in a given stage, it remained dominate throughout the entire stage even though two diverter drops per stage were incorporated into the treatment. Finally, the DAS/DTS data indicated that a significant portion (71%) of the stages experienced intra-stage communication. The large majority of this communication was due to plug leakage.
|File Size||3 MB||Number of Pages||11|
Barree, R.D., Cox, S.A., Miskimins, J.L. 2015. Economic Optimization of Horizontal-Well Completions in Unconventional Reservoirs. SPE Prod & Oper. SPE-168612-PA (in press; posted February 2015). http://dx.doi.org/10.2118/168612-PA.
Cadwallader, S., Wampler, J., Sun., T. 2015. An Integrated Dataset Centered Around Distributed Fiber Optic Monitoring – Key to the Successful Implementation of a Geo-Engineered Completion Optimization Program in the Eagle Ford Shale. Presented at the Unconventional Resources Technology Conference (URTeC), San Antonio, Texas, 20–22 July. URTeC: 2171506. http://dx.doi.org/10.15530/urtec-2015-2171506.
Wheaton, B., Miskimins, J., Wood, D. 2014. Integration of Distributed Temperature and Distributed Acoustic Survey Results with Hydraulic Fracture Modeling: A Case Study in the Woodford Shale. Presented at the Unconventional Resources Technology Conference (URTeC), Denver, Colorado, 25–27 August. URTeC: 1922140. http://dx.doi.org/10.15530/urtec-2014-1922140.