Key technology study on tight sand-conglomerate reservoir reconstruction of gas reservoirs

Multiple fractures will be occurred when sand fracturing operation to increase the difficulty of construction due to complex lithology and strong heterogeneity in tight gas reservoirs.This paper present pertinence measures in sand-conglomerate reservoir of lower section of T3X4 on the basis of analyzing the cause of difficult.The investigation indicates that multiple fractures can be controlled by reduce gradient,optimization perforation and slug to decrease filter loss of fracturing fluid in production.Wellhead and the column structure have been optimized for different characteris-tics of reservoir to meet construction and help later test and gas recovery.Results show that proposed specific measures for similar transformation of the reservoir has good applicability.