Productivity Evaluation of Horizontal Wells in Duvernay Shale Condensate Gas Reservoir in Canada

The Duvernay shale gas condensate reservoir in Canada is a typical example of the application of staged fracturing technology in horizontal shale gas Wells. The productivity of staged fracturing horizontal Wells is closely related to sweet spot distribution and drilling technology. The main controlling factors affecting the distribution of sweet spots in the study area were identified, and different shale condensate zones were divided according to the distribution of hydrogen index HI and condensate ratio CGR. By analyzing the production curve of horizontal Wells that have been put into production, the declining law is determined, and the time and length of horizontal Wells are normalized to form the average production curve of horizontal length per thousand meters of a single well under the current technical conditions. Combined with the well spacing, horizontal section length, and fracturing design parameters of future horizontal Wells, the typical decline curve of gas and condensate oil in each zone is formed to predict the production of gas and condensate oil per well. The research results provide favorable support for development planning and scheme deployment.