The utility model relates to a combined type oil pipe blanking plug belongs to borehole operation tools, is particularly useful for the self -blowing well and has the well operation construction work shutoff of overflow to prevent spouting technical field. The utility model discloses by the sealed packing element of top connection, leather cup style, go up connecting rod, leather cup style send seal a packing element, stock body assembly is formed, end screw thread connection has a lower connecting rod under the stock body assembly, lower connecting rod lower extreme is equipped with split type lock tooth joint, is connected by hasp and lower clutch, overlaps on the connecting rod body of rod under and is equipped with the compression packing element. The utility model discloses utilize leather cup formula packing element and compression packing element in the pit shaft pressure effect two -stage packing element combination of latus rectum in the radial expansion shutoff tubular column down, oil gas water overflows the passageway in the shutoff tubular column, and the different pressure states of better solution self -blowing well or overflow well job execution in -process tubular column is down prevented spouting, and withstand voltage rank is high, seals effectually, can satisfy the shutoff of different specification tubular column and prevent the spraying and be good at needs.