Multilayer fuel gas storage well cylinder used for high-pressure underground fuel gas storage well and molding-fixing method thereof

Abstract

The invention belongs to a multilayer fuel gas storage well cylinder used for a high-pressure underground fuel gas storage well and a molding-fixing method of the multilayer fuel gas storage well cylinder. The fuel gas storage well cylinder comprises an inner-layer fuel gas storage cylinder, a cement protecting-reinforcing layer and an outer cylinder. The molding-fixing method comprises the following steps: drilling a foundation well and lowering the outer cylinder, fixing the outer cylinder, lowering the fuel gas storage cylinder, pouring the cement protecting-reinforcing layer and molding and fixing the multilayer fuel gas storage well cylinder. In the invention, the cement protecting-reinforcing layer which tightly wraps the outer surface of the fuel gas storage cylinder and fastens the fuel gas storage cylinder and the outer cylinder integrally is additionally arranged on the basis of a traditional double-tube underground fuel gas storage well, so that the multilayer fuel gas storage well cylinder has the advantages that in the using process, the corrosion of the fuel gas storage cylinder caused by the underground water can be isolated completely, the well fixing effect is improved effectively, the deformation amplitude of the fuel gas storage cylinder caused by alternating load is reduced greatly, the safety and reliability of the fuel gas storage and the running of the underground fuel gas storage well is ensured, not only the service life of the fuel gas storage well can is prolonged, but also the breakage or explosion in the using process of the shaft of the fuel gas storage well is prevented, and the like.

Description

technical field

[0001] The invention belongs to a multi-layer gas storage well body for underground gas storage wells of high-pressure fuel gas and a method for forming and fixing the well body, in particular to a multi-layer gas storage well casing containing a gas storage casing layer, a cement protection strengthening layer and an outer casing protection and fixing layer for use in A shaft body for underground gas storage, and a method for forming and fixing the shaft body; adopting the multi-layer gas storage well shaft body for a high-pressure fuel gas underground gas storage well of the present invention to store high-pressure fuel gas can ensure that the outer surface of the gas storage layer is covered by cement and the outer cylinder body Evenly coated and fastened into one body, it can effectively prevent the gas storage cylinder from being corroded by groundwater and harmful gases while enhancing the strength of the gas storage cylinder, ensuring long-term safe and r...

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