High manganese containing steels for oil gas and petrochemical applications

A chemical, petroleum technology that is used in the application field of steel for oil, gas and petrochemical applications, which can solve problems such as pipe abrasion

Inactive Publication Date: 2013-09-25
EXXON RES & ENG CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, tube erosion remains a serious problem and alternative tube structures or materials are required to provide more economical operation

Method used

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  • High manganese containing steels for oil gas and petrochemical applications
  • High manganese containing steels for oil gas and petrochemical applications
  • High manganese containing steels for oil gas and petrochemical applications

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Embodiment Construction

[0064] All numerical values ​​in the detailed description and claims herein are modified by "about" or "close to" the indicated value, and take into account experimental errors and deviations that would be expected by those of ordinary skill in the art.

[0065] The present invention relates to high manganese containing iron components and the use of such high manganese containing iron components in steels for oil and gas exploration, production, transportation and petrochemical applications for increasing operational reliability and productivity. More particularly, applicants have discovered that in oil and gas exploration, production, transportation, and petrochemical applications, the high manganese-containing iron components improve one or more of the following properties: ductility, crack resistance, Abrasion resistance, fatigue life, surface hardness, stress corrosion resistance, fatigue resistance, and environmental cracking resistance.

[0066] Composition of compone...

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Abstract

Provided are high manganese containing ferrous based components and their use in oil, gas and / or petrochemical applications. The components include 5 to 40 wt% manganese, 0.01 to 3.0 wt% carbon and the balance iron. The components may optionally include one or more alloying elements chosen from chromium, nickel, cobalt, molybdenum, niobium, copper, titanium, vanadium, nitrogen, boron and combinations thereof.

Description

technical field [0001] The present invention relates to the field of steels containing high manganese (Mn). More particularly, the present invention relates to the use of such manganese containing steels for oil, gas and petrochemical applications. Background technique [0002] Cryogenic structures such as liquefied natural gas (LNG) vessels require steel with specific cryogenic properties. The steel needs to maintain ductility and crack resistance with a high level of security even at low temperatures (<-100°C). It must also have high strength so that the wall thickness of the tank can be reduced, which leads to lower construction costs. Regular carbon steel loses much of its toughness and becomes brittle at low temperatures. Steels commonly used for cryogenic structural applications are alloy steels such as Fe-9wt%Ni steels, austenitic stainless steels (such as 304SS with Fe-18wt%Cr-8wt%Ni), Invar alloys (Fe-36wt% %Ni) and aluminum alloys. [0003] Aluminum alloys ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04
CPCC22C38/04
Inventor 陈炫佑拉加万·阿耶尔道格拉斯·P·弗尔柴尔德马里奥·L·玛西亚
Owner EXXON RES & ENG CO
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