Needle and taper type steam-filling and hot oil prodn. packer

The utility model relates to a needle-taper type packer for steam injection and thermal oil production, which is used for thick oil thermal production and steam injection, and is composed of an upper joint 1, a center pipe 14, a lower joint 21, and parts assembled on the upper joint 1, the center pipe 14 and the lower joint 21, wherein, the parts comprise an upper rubber sleeve 5, a lower rubber sleeve 15, a shield 3, a cone device 6, a spring 7, a piston ring 8, a sheath 11, a back cap 12, a spacing ring 13, a top cap 16 of a pressing spring, the pressing spring 17, a control rings 18 of the pressing spring, a check ring 19, and an adjusting cap 20. Due to the adoption of the needle type shield and the cone device structure as well as interaction between all components, the packer has the advantages of reasonable design novel structure, reliable whole operation safe work, high success ratio of seat seal, high applicable pressure and temperature, etc. Because a telescopic pipe 4m long is canceled, the utility model has convenient operation of lifting and descending, and can be generalized and applied in thick oil thermal production wells via steam injection.