Practice and understanding on multiple crack volume fracturing in open hole horizontal well section of Zone Su53

The horizontal wells in low permeability tight sandstone gas reservoirs of Sugeli were featured by multiple layers, long gas-bearing section and poor physical properties, so open hole packer staged fracturing is an effectively measure to enhance single well gas production. The key points of hydraulic fracturing for tight sandstone gas reservoirs are mainly improving reservoir percolation capacity on the plane and increasing the producing degree and validity of reservoir profile in the vertical, and there is an obviously positive correlation between stimulated volumes of reservoir and yield increasing effect. Volume fracturing mode adaptable to open hole horizontal well of Zone Su53 was investigated, and then this paper proposed the technique and realize method of multiple crack volume fracturing. Great stimulation effect in field has established a new technique thought for high efficient development of Sugeli gas reservoir.