The hydraulic fracturing design technology and application of geological-engineering integration for tight gas in jinqiu gas field

Tight sandstone gas reservoir of Shaximiao formation in Jinqiu Gas field has the advantages wide distribution and abundant resources. Due to its low porosity, permeability strong spatial heterogeneity, this puts forward high requirements for sweet spot identification, cluster design hydraulic fracture morphology prediction. Since conventional stimulation methods can not meet requirement economy, geological-engineering integration model is established. This optimization multiple subjects could layout relationship among engineering characteristics, shape well productivity. Based on simulation results, key controlling factors are identified optimized. And customized strategies recommended different quality channel sand. Through application these methods, average test productivity target increased from 50,500 cubic meter per day 434,300 day, it lay a solid foundation efficient development tight central Sichuan Basin.