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

Abstract

The invention provides a titanium connection sealing ring for deep sea oil drilling equipment, which comprises a circular ring body, the central hole of the ring body is a peripheral surface, and there are circular rings along the circumferential direction of the outer circular surface of the ring body. Shaped bosses, platforms, inclined end faces and flat end faces, the inner peripheral surface can be threaded according to user requirements to connect oil pipelines or use on other equipment. It also provides a processing method for the titanium connecting sealing ring, which mainly includes the steps of sponge titanium material preparation, vacuum melting titanium ingot, forging square, heating forging, heat treatment and machining. The measured tensile strength of the invention is 565MPa, the yield strength is 460MPa, the elongation is 25.2%, the reduction of area is 44%, and the technical performance is significantly improved. It can be used reliably in deep seas from 1000m to 3000m deep or deeper, can withstand huge deep sea pressure and oil and gas transmission pressure, can also improve the service life and production efficiency of drilling equipment, and can also avoid corrosion, damage, oil leakage Pollution of the marine 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

Images