Prediction of Longitudinal Superimposed “Sweet Spot” of Tight Gas Reservoir: A Case Study of Block G, Canada

In this paper, taking Block G in Canada as an example, combined with the data of working area, Pearson–MIC comprehensive evaluation method was adopted to optimize key parameters productivity. Based on analytic hierarchy process, weight each parameter calculated, grade index “sweet spot” divided, standard sweet spot established, and distribution superimposed finally depicted. The results show that lateral length, number stages, volume fluid, amount proppant are engineering horizontal well, length is independent parameter. cumulative gas production first two years normalized eliminate influence, total organic carbon (TOC) determined geological parameter, whereas porosity water saturation were secondary parameters. area Type I spots accounts for 24.2% Series Upper 23.1% Lower. This study proposed a new prediction idea based influence factors productivity, its also laid foundation subsequent placement wells G.