High-performance titanium joint seal ring for deep-sea oil drilling and production equipment and processing method thereof

Abstract

The invention provides a titanium joint seal ring for deep-sea oil drilling and production equipment, which comprises an annular ring body, wherein the center hole of the ring body is provided with a circumferential surface; the outer circle surface of the ring body is sequentially provided with an annular lug boss, a platform, an oblique end surface and a horizontal end surface in the circumferential direction; and the inner circumferential surface can be provided with a thread according to the customer requirements, and thus, can be connected with an oil delivery pipe or used on other devices. The invention also provides a processing method of the titanium joint seal ring, which mainly comprises the following steps: sponge titanium preparation, vacuum smelting of titanium ingot, press forging for root extraction, forging by heating, heat treatment and machining. The actually measured tensile strength is 565 MPa, the yield strength is 460 MPa, the, elongation percentage is 25.2%, the percentage reduction in area is 44%, and thus, the technical properties are obviously enhanced. The titanium joint seal ring can be reliably used in deep sea with the depth of 1000-3000m or more, can bear the huge deep-sea pressure and satisfy the demand of the oil-gas delivery pressure, can enhance the service life and recovery efficiency of the drilling and production equipment, and can prevent the corroded and damaged leaking oil from polluting the sea environment.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal processing and relates to titanium metal processing, in particular to a high-performance titanium connection sealing ring for deep-sea oil drilling equipment and a processing method thereof. Background technique [0002] Judging from the discovery of large oil and gas fields in the world in the past ten years, 60% to 70% of the newly added oil reserves are from the ocean, and the reserves discovered in the deep sea account for about 45% to 50%. Therefore, the deep sea has become the main area for the replacement of oil and gas field reserves in the world. Looking at the deep sea alone, the world's deep sea oil and gas reserves exceed 200 billion tons, of which oil accounts for 60% to 70%, and natural gas accounts for 10% to 20%. Therefore, human beings have set their goals from the near sea to the far sea. However, deep sea exploration and exploitation technology needs to challenge the ...

AI Technical Summary

Problems solved by technology

[0003] At present, in the oil drilling and production industry, most deep-sea oil drilling and production equipment use steel (including stainless steel) flanges to connect and connect with bolts or use complex connection components (referred to as "components") to connect two sections of oil pipelines. The installation or replacement and maintenance work is cumbersome, and the internal stress of the components after installation is not uniform

Therefore, when steel components are usually used in the deep sea of ​​1000m to 3000m, due to their poor seawater corrosion resistance, they have the disadvantage of short service life, which can easily lead to accidents such as fracture, damage, oil leakage or equipment failure.

If the steel connection sealing components are corroded, they must be replaced or repaired, and drilling equipment in deep sea is often not easy to repair or replace, so with the development of deep sea oil drilling and production to deeper depths, especially when used in deep seas deeper than 3000m, steel It is difficult for connecting and sealing components to meet the needs of deep sea oil drilling

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