Abstract: Experiences in dealing with blow-out of carbonate fractured oil and gas pools in Sichuan Province are reviewed in three parts,general description of blow-out and measures of control; principal causes of blow-out and primary steps taken for its control.Blow-outs are mostly caused by the loss of control of oil and gas flow at the well head and all the measures adopted are aimed at restoring the normal controlling functions of the well head installations.The paper has also summed up some of the experiences in the safe drilling-in of high pressure oil and gas pays,laying special emphasis on the importance of technical competence of drilling crew and strict implementation of technical instructions.