Novel sealing inner blowout prevention tool made of composite metal material

Abstract

The invention discloses a novel sealing inner blowout prevention tool made of a composite metal material. The novel sealing inner blowout prevention tool comprises an inner blowout prevention tool body. The inner blowout prevention tool body comprises a first sealing blowout prevention part and a second sealing blowout prevention part, the first sealing blowout prevention part and the second sealing blowout prevention part are connected and are in contact with a sliding block arranged on the inner blowout prevention tool body, hydraulic oil inlet / outlets are formed in the sliding block, the hydraulic oil inlet / outlets respectively feed and discharge oil to push the sliding block to move up and down, the staying positions of the sliding block are different, the first sealing blowout prevention part and / or the second sealing blowout prevention part can be deformed to implement blowout prevention or release blowout prevention, and the first sealing blowout prevention part and the second sealing blowout prevention part are both cast by tin bronze. The sealing inner blowout prevention tool is formed by casting or machining tin bronze metal, the interior is of a hollow structure, on onehand, the size and sealing pressure are is accurate, and the sealing effect is good, and on the other hand, the sealing inner blowout prevention tool can be repeatedly disassembled, assembled and recycled, and is wear-resistant and deformation-resistant, and the holding force can be adjusted according to different requirements.

Description

technical field [0001] The invention relates to the field of internal blowout prevention tools, in particular to a novel composite metal material sealed internal blowout prevention tool. Background technique [0002] During the drilling process, when overflow kick occurs in the well, in order to prevent the formation fluid and drilling fluid from spraying up along the drill string water hole and damaging the hose and causing blowout, it is necessary to use the blowout prevention tool in the drill string to control the internal pressure of the drill string. [0003] At present, the blowout prevention tool in the oil pipe (drill pipe) is widely used in oil well operations. Blowout prevention tool in the tubing; the blowout prevention tool in the tubing is composed of the upper lifting short and the tubing cock valve connected to the lower part; the kelly cock valve, which belongs to the blowout prevention tool in the drill pipe, usually has two types: the upper cock valve and ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the above problems in the prior art, and provide a novel composite metal material sealed internal blowout prevention tool. The present invention is made of tin bronze metal casting or machining, and the interior is a hollow structure. On the one hand, the size is accurate, Accurate tightness, precise sealing pressure, good sealing effect, on the other hand, can be repeatedly disassembled and recycled, wear-resistant, anti-deformation, and can adjust the size of the force through the force transmission protrusion according to different needs, which is different from the prior art Internal blowout prevention tools made of rubber and other materials

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