Production Data Analysis Using Rate Transient Analysis and Mini-Frac Test Report Review at the North Montney Unconventional Shalegas Field, British Columbia
- Hiroko Kozawa (JAPEX Co., Ltd.) | Hiroaki Kadono (JOGMEC) | Yoshiharu Ito (JOGMEC) | Sunao Takagi (JOGMEC) | Ayae Goto (JAPEX Co., Ltd.)
- Document ID
- Society of Petrophysicists and Well-Log Analysts
- SPWLA 24th Formation Evaluation Symposium of Japan, 11-12 October, Chiba, Japan
- Publication Date
- Document Type
- Conference Paper
- 2018. Society of Petrophysicists and Well Log Analysts
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- 94 since 2007
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The Montney play is the most actively drilled unconventional oil and gas producing field in Canada. Compared to North America’s top plays, there is the upside potential for completion designs regardless of geology. It is supported by the statistical evidence . Well productivity and project economics of unconventional field development are highly dependent on the effectiveness of hydraulic fracturing. The mechanism of hydraulic fracturing is complicated due to interference between the multiple factors. Not only the geological heterogeneities such as natural fractures but also the stress heterogeneity influence the fracture propagation and fluid flow. To investigate the interference, a multidisciplinary approach is rationalized to model pressure depletion associated stress properties.
The primary objective of this study is to optimize the completion design and fracture stimulation operation design. For this purpose, we measured and analyzed the well performance through the data as the first phase of this study to derive the key completion factors; drilling, completion, production volume, and pressure data were analyzed to understand the completion performance and possible controllable factors related to the current completion design. Figure 1 shows the study workflow, the aim of optimizing a well completion design for shale gas wells located in the North Montney area since 2017. In first phase of this study, the production team focused to evaluate the SRV, Stimulated Reservoir Volume, and EUR, Estimated Ultimate Recovery, then, we worked for permeability estimation and validation.
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