Annular blowout preventer
A technology of annular blowout preventer and annular protrusion, which is applied in the direction of wellbore/well components, earthwork drilling and production, sealing/isolation, etc., can solve problems such as prolonging the time of minor repair operations, destroying reservoirs, killing wells, etc., and achieves Shorten the lifting time of tubing, protect the reservoir, and shorten the time
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[0036] The invention discloses an annular blowout preventer, which can shorten the time of minor repair operation, improve the efficiency of minor repair operation and protect the reservoir in snubbing operation.
[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0038] see figure 1 , figure 1 Schematic diagram of the structure of the annular blowout preventer provided by the embodiment of the present invention.
[0039] The invention discloses an annular blowout preventer, which comprises a first casing 1...
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