Increasing the endurance limit and corrosion resistance of light-alloy drill pipes

1977 ◽  
Vol 12 (5) ◽  
pp. 530-532
Author(s):  
V. I. Pokhmurskii ◽  
A. M. Prishlyak ◽  
A. T. Levchenko ◽  
K. M. Gil'man
Keyword(s):  
Corrosion Resistance ◽  
Endurance Limit ◽  
Light Alloy ◽  
Drill Pipes

Studies of Tribological and Corrosion Properties of Coatings Based on Iron for Light Alloy Drill Pipes of Aluminium Alloys

2019 ◽  
Vol 822 ◽  
pp. 709-715
Author(s):  
Boris Aleksandrovich Shemyakinskiy ◽  
Margarita Alexandrovna Skotnikova ◽  
Zi Xi Wang ◽  
Aleksey Aleksandrovich Alkhimenko
Keyword(s):  
Corrosion Resistance ◽  
Aluminium Alloys ◽  
Electrochemical Analysis ◽  
Wear Properties ◽  
Light Alloy ◽  
Properties Of Coatings ◽  
Corrosion Properties ◽  
Wide Range ◽  
Drill Pipes ◽  
Iron Based

The paper presents the results of tribotechnical studies of anti-wear properties of iron-based coatings for light-alloy drill pipes made of aluminum alloys. The description of the tribotechnical stand simulating real processes of drilling in a wide range of conditions is given. Also, the analysis of corrosion resistance of coatings by electrochemical analysis was carried out. The results showed that there is a potential for the use of this type of coating.

SANDVIK Ti-3Al-2.5V GRADE 9

Alloy Digest ◽  
1997 ◽  
Vol 46 (9) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Endurance Limit ◽  
Weight Ratio ◽  
High Strength ◽  
Strain Ratio ◽  
Bend Strength ◽  
Aerospace Applications ◽  
Excellent Corrosion Resistance ◽  
Titanium Aluminum ◽  
Fatigue Endurance

Abstract Sandvik Ti-3Al-2.5V Grade 9 titanium-aluminum alloy offers excellent corrosion resistance, especially to chloride media, and has a high strength-to-weight ratio, which is especially suitable for use in aerospace applications. Tubing can be produced having a CSR (contractile strain ratio) that enhances the fatigue endurance limit. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and bend strength as well as fatigue. It also includes information on corrosion resistance as well as forming, machining, and joining. Filing Code: TI-109. Producer or source: Sandvik.

Protective and Thermophysical Characteristics of Plasma-Electrolytic Coatings on the Ultra-Light Magnesium Alloy

2021 ◽  
pp. 1-15
Author(s):  
Sergey Grigoriev ◽  
Igor Kondratsky ◽  
Boris Krit ◽  
Valery Ludin ◽  
Varvara Medvetskova ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Thermal Diffusivity ◽  
Magnesium Alloys ◽  
Ceramic Coatings ◽  
Specific Electrical Conductivity ◽  
Technological Parameters ◽  
Thermophysical Characteristics ◽  
Light Alloy ◽  
Plasma Electrolytic ◽  
Integral Assessment

Abstract Magnesium alloys are now widely used for various purposes due to their unique properties despite the significant disadvantage associated with low corrosion resistance. The plasma-electrolytic oxidation (PEO), which allows the formation of ceramic coatings on the surface of magnesium alloys, is the most advanced and effective method for their protection. But firstly, PEO process of magnesium alloys has some difficulties, and secondly, PEO coatings affect the thermophysical characteristics of the modified materials, in particular they reduce thermal diffusivity. The presented work is devoted to the development of the technological parameters for formation of protective coating on the ultra-light alloy Mg-8Li-1Al-0.6Ce-0.3Y by the PEO method. The results analyses of electrolytes acidity and specific electrical conductivity before and after PEO process and also investigation data of the coatings structure and surface morphology are presented. An integral assessment of the ability of thermal diffusivity and corrosion resistance of the modified alloy was made. Studying of protective and thermophysical characteristics of the obtained coating showed that it provides a sufficiently high corrosion protection, despite the relatively small thickness, and the presence of pores and slightly (not more than 5%) reduces the thermal diffusivity of the magnesium ultra-light alloy.

scholarly journals Investigation of tribotechnical and corrosion behaviour of material for light-alloy drill pipes

2018 ◽  
Vol 18 (1) ◽  
pp. 21-27
Author(s):  
Alina I. Shakirova ◽  
Rustem A. Ismakov ◽  
Akhtyam Kh. Agliullin ◽  
Nikolai K. Tsenev
Keyword(s):  
Plastic Deformation ◽  
Aluminum Alloys ◽  
Severe Plastic Deformation ◽  
Sliding Friction ◽  
Corrosion Behaviour ◽  
High Strength ◽  
The Arctic ◽  
Light Alloy ◽  
Pipe Surface ◽  
Drill Pipes

Special aluminum alloys appear to be promising materials for manufacture of high-strength light-alloy drill pipes (HSLADP) that can be used in areas with a severe climate and challenging geology. The effect of using light-alloy drill pipes (LADP) depends directly on the properties of the aluminum alloys from which such pipes are made. As the wells become deeper and horizontal wellbores get longer, use of LADPs becomes more relevant. Since light-alloy pipes are 2.8 times softer than steel pipes, LADPs offer the same performance as steel drill pipes of the lowest strength grade even in the case of rotary drilling. The materials from which such pipes are made have a number of unique advantages: extra light weight in the drill mud, allowing the coefficient of sliding friction between the pipe surface and the borehole wall to be reduced; high corrosion resistance in aggressive media with A high concentration of hydrogen sulfide and carbon dioxide; and high magnetic inductive capacity that allows LADPs to be used as a housing for MWD (measurement while drilling) and LWD (logging while drilling) telemetry systems during well-drilling operations. This study suggests methods for industrial production of submicrocrystalline (SMC) structure in aluminum alloys with the help of severe plastic deformation. Through the example of model aluminum-lithium alloys 1420 (Al-Mg-Li-Zr) and 1460 (Al-Сu-Li-Zr), the researchers demonstrate that SMC structure helps significantly increase resistance to wear and reduce the rate of corrosion depending on the pH value. The research team also states that severe plastic deformation methods may be used to develop highly promising technologies for manufacture of high-strength LADPs with advanced strain-stress properties for use during operations in the Arctic.

Research Status and Development of Titanium Alloy Drill Pipes

2019 ◽  
Vol 944 ◽  
pp. 903-909 ◽  
Author(s):  
Rui Zhe Li ◽  
Chun Feng ◽  
Long Jiang ◽  
Ya Qiong Cao
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
High Temperature ◽  
Drill Pipe ◽  
Petroleum Industry ◽  
Specific Strength ◽  
Deep Wells ◽  
Production Safety ◽  
Drill Pipes ◽  
Pipe Processing

Petroleum and natural gas exploration and development are deepening, and the environment and stratum conditions encountered are becoming more and more complex. There are many high-temperature, high-pressure, high-corrosion wells, and the number of ultra-short horizontal directional wells, ultra-deep wells, and extended reach wells are also increasing. The steel drill pipe has not been able to meet and adapt to these requirements. Titanium alloy drill pipe has a series of advantages such as low density, high specific strength, excellent corrosion resistance, high temperature resistance, fatigue resistance, non-magnetic and good flexibility. It is suitable for the development of modern petroleum industry. This article discusses the use of titanium alloy drill pipe in domestic and foreign drilling in horizontal wells with short radius, the design of alloy components in titanium alloy drill pipes, body pipe processing, joint connection and corrosion resistance. Combining the practical application of titanium alloy drill pipe points out the current problems. Finally, from the aspect of drilling cycle, production safety and cost saving, the development and application of titanium alloy drill pipes in deep wells, ultra-deep wells and deep-sea drilling operations are prospected.

scholarly journals Performance of Protective Coatings for Aluminum Alloys in the Operating Conditions of Oil Production Equipment

2021 ◽  
Vol 225 ◽  
pp. 05003
Author(s):  
Oleg Shvetsov ◽  
Sergey Kondrat’ev
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Corrosion Rate ◽  
Protective Coatings ◽  
Production Equipment ◽  
Operating Conditions ◽  
Carbide Coating ◽  
Tungsten Carbide Coating ◽  
Drill Pipes

The paper investigates wear resistance and corrosion resistance of protective coatings of D16 aluminum alloy under conditions that simulate operation of drill pipes. The paper also presents microstructure of coatings, electrochemical potential and corrosion rate of D16 aluminum alloy with various coatings. We evaluated adhesion and wear resistance of these coatings. D16 alloy with a tungsten carbide coating has the widest range of service properties and can be used to effectively protect the surface of aluminum drill pipes during operation operation.

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