Evolution of Completion Techniques in the Lower Shaunavon Tight Oil Play in Southwestern Saskatchewan

Schlosser, Dan J.; Johe, Michael; Humphreys, T..; Lundberg, Chad; McNichol, Joanne

doi:10.2118/173368-ms

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…On the other hand if we focus only on the variations in well performance caused by completions technologies, we notice that the best combination of completions strategies will yield an improvement in well performance that ranges from 30% to 100% in the best cases. For example, West et al (2014) reached up to 75% improvement in the Bakken performance by applying a wide range of engineering techniques while Schlosser et al (2015) had about 60% improvement in cumulative oil in the Shaunavon tight oil play when shifting from open hole with low proppant tonnage to cemented liner with high proppant tonnage. In other words, completion optimization is a two-pronged optimization strategy: the first optimization strategy must focus on the Geologic Heritage and the Stressful Environment which is the first order controlling factor on well performance, followed by a second optimization strategy focused on completion techniques which represents a second order factor in well performance.…”

Section: Completion Optimization and The "Personality Of A Shale Well"mentioning

confidence: 99%

Predicting Frac Stage Differential Stress and Microseismicity Using Geomechanical Modeling and Time Lapse Multi-Component Seismic - Application to the Montney Shale

et al. 2015

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This paper describes the application of a workflow that uses Geophysics, Geology, and Geomechanics (3G) for completion optimization. The 3G workflow relies on the modeling of the interaction between hydraulic and natural fractures to estimate key reservoir properties that could be used to better understand data such as microseismicity or to plan an engineering completion. The 3G workflow uses geomechanical simulation that combines the meshless Material Point Method (MPM) with Continuous Fracture Modeling (CFM). The distribution of the natural fracture density is estimated from G&G data and in this paper it uses a time lapse 3C seismic that was processed for Shear Wave Velocity Anisotropy (SWVA). The geomechanical workflow uses this as an input to predict quickly over a large area the Normalized Differential Horizontal Stress (NDHS) and the Maximum Horizontal Stress Direction (MHSD) maps. Both these properties are used to improve the interpretation of microseismicity and to provide valuable information for the completion engineer to optimize his frac design. When using this approach on a Montney two wells pad, it appears that high values of NDHS are directly correlated to the fracture density estimated from the shear wave splitting parameter. While the local direction of maximum horizontal stress generally follows the direction of the imposed regional stress, large stress rotations of up to 90 degrees could occur in areas where the NDHS is very high. This observation is validated with microseismic data that confirms the local development of axial fracs instead of the desired transverse hydraulic fractures. Combining the NDHS and MHSD maps will be a very valuable completion optimization tool that would assist the completion engineer in adapting his frac design and treatment to the local geomechanical environment. The same 3G workflow will also provide to the completion engineer with quantitative tools such as the strain distribution and the J integral to predict or evaluate the efficiency of multiple fracing sequences and understand what is happening in the field experiments frequently showing zipper fracs outperforming other fracing sequences.

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Section: Completion Optimization and The "Personality Of A Shale Well"mentioning

confidence: 99%

Predicting Frac Stage Differential Stress and Microseismicity Using Geomechanical Modeling and Time Lapse Multi-Component Seismic - Application to the Montney Shale

et al. 2015

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Assessment of Tight Rock Wettability by Spontaneous Imbibition at Elevated Pressures

Sánchez¹,

Jairo²

2019

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Evolution of Completion Techniques in the Lower Shaunavon Tight Oil Play in Southwestern Saskatchewan

Cited by 2 publications

References 4 publications

Predicting Frac Stage Differential Stress and Microseismicity Using Geomechanical Modeling and Time Lapse Multi-Component Seismic - Application to the Montney Shale

Predicting Frac Stage Differential Stress and Microseismicity Using Geomechanical Modeling and Time Lapse Multi-Component Seismic - Application to the Montney Shale

Assessment of Tight Rock Wettability by Spontaneous Imbibition at Elevated Pressures

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