Deblocking type metal packer

Abstract

The invention relates to the field of oil and gas reservoir exploitation equipment, in particular to a deblocking type metal packer, and aims to relieve the technical problem that a conventional packer is prone to failure under complex well conditions such as a deep well and an ultra-deep well in the prior art. The deblocking type metal packer comprises a central pipe, a sealing mechanism and a limiting mechanism. The sealing mechanism comprises a clamping base arranged on the central pipe in a sleeving mode, an inner cylinder and an outer cylinder. The number of the clamping seats is two. The inner cylinder and the outer cylinder are both made of beryllium bronze materials, the two ends of the inner cylinder and the two ends of the outer cylinder are fixed to the two clamping bases respectively, the middle section of the inner cylinder is in an arc shape protruding towards the center pipe, the inner cylinder is sleeved with the outer cylinder, the outer cylinder and the inner cylinder define a containing cavity, and the middle section of the outer cylinder is in a wave shape; the containing cavity is filled with filling materials. The limiting mechanism is arranged on the central pipe and is configured to extrude the clamping base under the pressing working condition. The sealing mechanism of the packer resists high temperature and high pressure, is easy to expand and deform, can establish effective sealing with a casing pipe, and can meet the use requirements under complex well conditions such as a deep well and an ultra-deep well.

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