Evaluation of main factors affecting fractured horizontal well productivity of tight sand gas reservoir in Sichuan Basin

Hydraulic fracturing horizontal well is the key technology of tight gas development. After fracturing, shows characteristics great difference in production energy and many factors affecting capacity. Therefore, taking 10 fractured wells JQ field Sichuan Basin as an example, comprehensively considering influence geological engineering factors, based on statistical analysis productivity laws various index parameters, 17 parameters were selected, main controlling studied by grey correlation method. The results show that can obtain high production, which jointly determined factors. five control are follows: proppant type, preflush, ϕ·h. Sand volume reservoir volume.