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 [1]. 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.
