A Study of the Structure and Physicomechanical Properties of Promising High-Strength Economically Alloyed Steel for Oil and Gas Production Pipes Operating under Extreme Conditions

2021 ◽  
Vol 122 (9) ◽  
pp. 923-930
Author(s):  
E. A. Putilova ◽  
S. M. Zadvorkin ◽  
I. N. Veselov ◽  
I. Yu. Pyshmintsev
Keyword(s):  
Oil And Gas ◽  
High Strength ◽  
Gas Production ◽  
Physicomechanical Properties ◽  
Alloyed Steel ◽  
Extreme Conditions ◽  
Oil And Gas Production

SANICRO 41

Alloy Digest ◽  
1995 ◽  
Vol 44 (1) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Oil And Gas ◽  
High Strength ◽  
Heat Treating ◽  
Gas Production ◽  
Oil And Gas Production ◽  
Corrosion Resistant ◽  
Corrosion Resistant Alloy ◽  
Nickel Base

Abstract SANDVIK SANICRO 41 is a nickel-base corrosion resistant alloy with a composition balanced to resist both oxidizing and reducing environments. A high-strength version (110) is available for oil and gas production. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-475. Producer or source: Sandvik.

Alloying Concept for High-Strength Seamless Heavy-Wall Line Pipe Suitable for Sour Service Applications

2004 ◽  
Author(s):  
K. Biermann ◽  
C. Kaucke ◽  
M. Probst-Hein ◽  
B. Koschlig
Keyword(s):  
Heat Treatment ◽  
Wall Thickness ◽  
Oil And Gas ◽  
High Strength ◽  
Gas Production ◽  
Pipe Material ◽  
Low Carbon ◽  
Line Pipe ◽  
Oil And Gas Production ◽  
Sour Service

Offshore oil and gas production worldwide is conducted in increasingly deep waters, leading to more and more stringent demands on line pipes. Higher grades and heavier wall thicknesses in combination with deep temperature toughness properties, good weldability and suitability for sour service applications are among the characteristics called for. It is necessary that pipe manufacturers develop materials to meet these at times conflicting requirements. An alloying concept based on steel with very low carbon content is presented. This type of material provides excellent toughness properties at deep temperatures in line pipe with a wall thickness of up to 70 mm, produced by hot rolling followed by QT heat treatment. Pipes from industrial production of identical chemical composition and heat treatment achieved grades X65 to X80, depending on wall thickness. The properties of the steel used in pipes are presented. The resistance of the pipe material to the influence of sour gas was assessed by standard tests. To demonstrate weldability, test welds were performed and examined.

scholarly journals ASSESSMENT OF VALVING SYSTEM DESIGN RISK UNDER CONDITIONS OF EXTREME OPERATION

2018 ◽  
Vol 2018 (8) ◽  
pp. 46-54
Author(s):  
Эдуард Петровский ◽  
Eduard Petrovskiy ◽  
Кирилл Башмур ◽  
Kiril Bashmur ◽  
Кирилл Терасмес ◽  
...  
Keyword(s):  
Sensitive Element ◽  
Oil And Gas ◽  
Safety Valve ◽  
Gas Production ◽  
Extreme Conditions ◽  
Pipe Fitting ◽  
Pulse Valve ◽  
Oil And Gas Production ◽  
Metal Bellows ◽  
Element Failure

A working order of a pipe fitting is a significant aspect in a trouble-free operation of technological objects in oil and gas production. It particularly concerns a safety valve protecting equipment against overpressure. In the field of high pressure, costs and temperatures the installation of pulse-safety devices is preferable. But, the complexity of their design and a substantial impact of a pulse valve sensitive element upon the whole correct work of a safety system in extreme conditions of operation increase design risks. With the purpose of their decrease there are considered possible circuits of the sensitive element standby in a pulse valve. By means of the method of reliability prediction on statistical models there are analyzed dependences of sensitive element failure probabilities as a spring and metal bellows in extreme conditions of operation. The conclusions on the application of a structural standby with a non-loaded reserve under definite conditions of operation and an optimum choice of structural materials for layers in multi-layer metal bellows are drawn.

scholarly journals Materials and Corrosion Trends in Offshore and Subsea Oil and Gas Production

2017 ◽  
Author(s):  
Mariano Iannuzzi ◽  
Afrooz Barnoush ◽  
Roy Johnsen
Keyword(s):  
Energy Demand ◽  
Oil And Gas ◽  
Extreme Environments ◽  
High Strength ◽  
Advanced Characterization ◽  
Gas Production ◽  
Oil And Gas Production ◽  
Environmentally Assisted Cracking ◽  
Engineering Alloys ◽  
Cantilever Bending

The ever-growing energy demand requires the exploration and the safe, profitable exploitation of unconventional reserves. The extreme environments of some of these unique prospects challenge the boundaries of traditional engineering alloys as well as our understanding of the underlying degradation mechanisms that could lead to a failure. Despite their complexity, high-pressure and high-temperature, deep- and ultra-deep, pre-salt, and Arctic reservoirs represent the most important source of innovation regarding materials technology, design methodologies, and corrosion control strategies.This paper provides an overview of trends in materials and corrosion research and development, with focus on subsea production but applicable to the entire industry. Emphasis is given to environmentally assisted cracking of high strength alloys and advanced characterization techniques based on in situ electrochemical nanoindentation and cantilever bending testing for the study of microstructure-environment interactions.

Assessment of Residual Stress and Suitability for Subsea Service of a Welded Superduplex Stainless Steel Flange Joint

2016 ◽  
Author(s):  
M. Dodge ◽  
S. D. Smith ◽  
T. London ◽  
K. Sotoudeh ◽  
R. Morana ◽  
...  
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Oil And Gas ◽  
High Stress ◽  
High Strength ◽  
Gas Production ◽  
Successful Operation ◽  
Oil And Gas Production ◽  
Superduplex Stainless Steel

Ferritic-austenitic (duplex) stainless steel components are used for oil and gas production duties due to their high strength and corrosion resistance. The material is routinely used for short flowlines, as well as for welded hubs and flanges. Cathodic protection (CP) is employed, via sacrificial aluminium based anodes, which protects ferritic steel parts from seawater corrosion. Whilst CP has proven successful in preventing corrosion, failures have occurred due to the ingress of electrolytically evolved hydrogen. Duplex stainless steel joints become susceptible to environmental cracking under a combination of high stress, hydrogen content, and susceptible microstructures; critical combinations of which may result in hydrogen induced stress cracking (HISC). Successful operation of duplex equipment, in avoidance of HISC, necessitates a good understanding of the total in-service stresses (including from loading applied in service and from residual stresses from manufacture, fabrication, installation and commissioning). One of the key components of understanding the in-service stress at welds is knowledge of the residual stress distribution, following welding. The focus of this paper is to provide an overview of the typical residual stress levels in a welded superduplex stainless steel (SDSS) subsea joint, using neutron diffraction and finite element modelling. The results are presented in the context of current recommended practice, for example DNV RP-F112.

Overview of Deepwater and Ultra-Deepwater Spar Risers

2010 ◽  
Author(s):  
F. Yiu ◽  
P. Stanton ◽  
R. Burke
Keyword(s):  
Oil And Gas ◽  
Low Cost ◽  
High Strength ◽  
Gas Production ◽  
Technical Solution ◽  
Oil And Gas Production ◽  
Technology Innovations ◽  
Construction Methods ◽  
Track Record ◽  
Exploration And Production

For more than a decade, Spar Top Tension Risers (TTRs) and Steel Catenary Risers (SCRs) have established a good track record through technology innovations. This paper describes how Spar TTR and SCR riser configurations have evolved to meet increasing industry demands and discusses the future of these riser systems. TTRs on the first Spar, Neptune, installed in the GOM in 1996, were supported by buoyancy cans. The next several Spar risers also used buoyancy cans with various improvements and modifications to the buoyancy can system design and installation method. In 2003, BP’s Holstein Spar was the first to use hydro-pneumatic tensioners to support its TTRs. The Kikeh and Perdido Spars also used tensioners. Optimization of TTRs is continuing with new construction methods such as the use of threaded and coupled (T&C) connectors instead of weld-on threaded connectors. Spar SCRs have also received widespread acceptance for deep and ultra-deepwater oil and gas production in recent years. The SCR has the advantages of relative low cost, conceptual simplicity, ease of fabrication and offshore installation. SCR hang-off options on a Spar include porch and pull tube. The pull tube option provides the most efficient technical solution for installation, brings the SCR interface above the water, which facilitates the piping hookup, and is better suited for the Spar’s architecture and transportation method. SCRs supported from a Spar have good fatigue performance in the touchdown region due to the relatively low motions of the Spar. As exploration and production activities move into deep and ultra-deepwater, and the metocean data increases in severity, Spar risers face additional design and analysis challenges. Adoption of high strength materials and strain-based design to meet these challenges is discussed.

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