2results about How to "Sealed well" patented technology

The utility model provides a kind of buckle structure, including upper cover, lower shell and silica gel sleeve, lower shell is placed in silica gel sleeve, and annular sealing ring is set in the silica gel sleeve of lower shell upper end, and the lower end of upper cover is provided with elastic vertical beam along annular interval, and elastic vertical beam is placed in lower shell, and with the inside sealing of annular sealing ring, elastic vertical beam is spaced apart from the inner wall of lower shell, and the interval is stress release cavity, the outside of part elastic vertical beam is provided with clasp, and lower shell is provided with the clamping groove matched with clasp.The utility model is fast in assembly rate, not easy to loosen under vibration environment, easy to disassemble, and repeated disassembly is not easy to cause sealing surface wear.

The application provides a salt cavern storage cover layer reconstruction method, which comprises the following steps: S1: hydraulically cutting off the casing of the upper stable stratum of the damaged or deformed casing, wherein the upper thick shale stable stratum forms a stratum seal as a cover layer; S2: lowering a telescopic drill bit to drill off the exposed cement ring; S3: lowering a hanging packer; S4: injecting thixotropic cement for sealing; S5: after the cement is cured, pressure test is conducted, and after the pressure test is qualified, the cement plug and the hanging packer are drilled; and S6: repairing the casing by using a casing patching method or an expandable pipe casing patching method. The salt cavern storage cover layer reconstruction method provided by the application does not reconstruct the direct roof, but reconstructs the wellbore in the upper shale stable stratum, seals the annulus, and provides favorable conditions for underground storage construction and disaster control, and has universality.