scholarly journals SMOOTH AND REDUCED OIL AND GAS PIPES WITH INCREASED CORROSION RESISTANCE

2021 ◽  
pp. 7-18
Author(s):  
V.I. BOLSHAKOV ◽  
Т. О. DERHACH ◽  
D.A. SUKHOMLYN
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Oil And Gas ◽  
Protective Coatings ◽  
Oil And Gas Industry ◽  
High Corrosion Resistance ◽  
Gas Industry ◽  
High Corrosion ◽  
Oil And Gas Pipelines ◽  
Qualitative Characteristics

Formulation of the problem. Corrosion of pipes used in the oil and gas industry leads to significant economic losses, therefore, increasing their corrosion resistance and durability is an urgent task. Purpose: generalization of results of developments of technologies of manufacturing and research of qualitative characteristics of oil and gas pipelines (smooth) and pump-compressor (threaded) pipes of the increased and high corrosion resistance and giving recommendations on their application in oil and gas industry in environments of various corrosion aggressiveness. Methodology. The microstructure of tubular steels and protective coatings was studied by light metallography and electron microscopy. Complex corrosion studies included laboratory tests of samples in model chloride and hydrogen sulfide-containing media, the resistance to sulfide corrosion cracking under stress (SCCS) and hydrogen cracking (НС) according to the methods of NACE TM 0177 and NACE TM 0284 as well as operational tests at the oil fields of Ukraine. Mechanical properties for stretching and impact bending of samples by standard methods. Results. The results of the development of production technologies and the study of the qualitative characteristics of oil and gas pipelines and tubing with increased and high corrosion resistance in aggressive oil and gas production environments are summarized. The influence of the chemical composition of steels and protective coatings, as well as pipe manufacturing technologies on their microstructure, corrosion resistance in various media, and mechanical properties is shown. Scientific novelty. For the first time, the presence of special low-energy boundaries in the ferrite of low-alloy ferrite-pearlite and high-alloy ferritic-austenitic steels was established, their number and energy level were estimated. The high operational reliability of threaded pipes with a protective coating is substantiated. Practical value. The results of the work and recommendations for the rational use of oil and gas pipes with increased corrosion resistance can be used to increase the economic efficiency of production in the oil and gas industry.

Production of Metallurgically Cladded Pipes for High End Applications in the Oil and Gas Industry

2008 ◽  
Author(s):  
Thilo Reichel ◽  
Jochem Beissel ◽  
Vitaliy Pavlyk ◽  
Gernot Heigl
Keyword(s):  
Corrosion Resistance ◽  
Carbon Steel ◽  
Oil And Gas ◽  
Fem Analysis ◽  
Oil And Gas Industry ◽  
High Corrosion Resistance ◽  
Gas Industry ◽  
High Corrosion ◽  
Manufacturing Procedure ◽  
Longitudinal Welds

The paper describes the different industrially used options to produce a clad pipe and explains in detail the manufacture of metallurgically cladded pipes starting with the production of roll bonded plates. In plate manufacturing the advantages as well as the limitations of thermo-mechanical (TM) rolling are discussed. The TM-technology is shown to improve weldability, HIC-resistance, strength and toughness properties of the carbon steel section of the pipe. Moreover, it also improves corrosion resistance of the CRA layer. The pipe manufacturing procedure, which involves two welding technologies for longitudinal welds is described. The carbon steel parts of the pipe are joined using double-sided multi-pass Submerged-Arc-Welding (SAW). The single-pass Electroslag-Welding (ESW) is subsequently used for recladding of the CRA layer. The multi-pass SAW results in excellent mechanical properties of the weld joint, whereas the ESW technique ensures low dilution of CRA with the carbon steel, a smooth weld bead shape and a high corrosion resistance of the deposited layer. With the aid of thermodynamic modeling and numerical simulations it is shown, that the high corrosion resistance is promoted by an intensive mixing within the ESW weld pool and relatively low segregation level of Cr and Mo during solidification. Furthermore, FEM analysis is applied to examine the plastic deformation and residual stresses distribution in the pipe during forming, welding and final calibration. The obtained information assists in optimization of manufacturing procedure, and can also be included in prediction of resulting pipe fatigue during operation.

Development of TMCP Type Alloy625/X65 Clad Steel Plate for Pipe

2014 ◽  
Author(s):  
Shunichi Tachibana ◽  
Yota Kuronuma ◽  
Tomoyuki Yokota ◽  
Shinji Mitao ◽  
Hitoshi Sueyoshi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Carbon Steel ◽  
Oil And Gas ◽  
Steel Plate ◽  
Control Process ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Superior Corrosion Resistance ◽  
Clad Steel

Demand for CRAs (Corrosion Resistant Alloys) clad steel is getting increased for pipeline application of oil and gas industry because of economic advantage over solid CRAs. CRAs clad steel consists of a CRAs layer for corrosion resistance and a carbon steel for mechanical properties. Nickel based Alloy625 is known to be suitable for harsh environmental condition such as high temperature and high pressure H2S (hydrogen sulfide) condition. In this paper, the corrosion resistance of Alloy625/X65 clad steel plate for pipe produced by TMCP (Thermo-Mechanical Control Process) was investigated. TTP (Time - Temperature - Precipitation) and TTS (Time - Temperature - Sensitization) diagram of Alloy625 indicated precipitation nose, e.g. M6C and M23C6 which would cause deterioration of corrosion resistance. TMCP enable Alloy625 to avoid long time exposure to the precipitation nose. In Huey test, the corrosion rate in TMCP was almost the same as that of solution treated Alloy625 and smaller than that in Q-T (Quench and Temper). In ferric chloride pitting test, no pitting was observed in Alloy625 layer of TMCP type clad steel. In addition, the corrosion test simulating service environment using autoclave apparatus was conducted under the condition of 0.39MPa H2S - 0.53MPa CO2 - Cl− solution at 200°C. Alloy625 clad steel produced by TMCP showed neither SSC (Sulfide stress corrosion cracking) nor crevice corrosion. All the mechanical properties of base carbon steel satisfied API 5L grade X65 specification by optimizing TMCP conditions. It is notable that 85% SATT of DWTT was below −10 °C. Thus, Alloy625/X65 clad steel plate for pipe produced by TMCP with both superior corrosion resistance and low temperature toughness has been developed.

Development of Heat Treatment Mode with Quenching in Different Quenching Environments for the Casing Pipe in Order to Obtain the Required Mechanical Properties

2020 ◽  
Vol 836 ◽  
pp. 41-45
Author(s):  
S.N. Dzhabbarov ◽  
E.I. Pryakhin
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Mechanical Characteristics ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Treatment Mode ◽  
Gas Industry ◽  
Heat Treatment Mode ◽  
Optimal Technology ◽  
Casing Pipe

Development of an optimal technology of heat treatment for blanks of the casing pipe made of steel 40H (GOST 4543) is used in the oil and gas industry for casing. It is accompanied by quenching in various environments to ensure guaranteed obtainment of the required mechanical characteristics. These characteristics are specified in GOST 632-80 and met in order to improve the properties of the 40H steel.

scholarly journals Carboline’s systems approach to the maintenance of coating systems for steel structures in the oil and gas industry

2019 ◽  
Vol 121 ◽  
pp. 02003
Author(s):  
Gennadiy Konovalov
Keyword(s):  
Oil And Gas ◽  
Systems Approach ◽  
Protective Coatings ◽  
Surface Preparation ◽  
Steel Structures ◽  
Oil And Gas Industry ◽  
Internal Stresses ◽  
Gas Industry ◽  
Low Levels ◽  
Protective Systems

The article discusses options for optimal repair systems with several advantages compared with competitive solutions in the market of protective coatings. The proposed materials have a high tolerance to the degree of surface preparation, compatibility with old protective systems, as well as low levels of internal stresses arising in the repair layer of coating, which significantly reduces the risk of pulling off the old protective coatings after repair.

scholarly journals Design of inductors for the installation of induction soldering of pipeline joints in the oil and gas industry

2021 ◽  
Vol 2094 (4) ◽  
pp. 042017
Author(s):  
A O Stupin ◽  
D V Rogova ◽  
E A Nozdrenko ◽  
V V Kukartsev ◽  
A I Cherepanov ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Production ◽  
Schematic Diagram ◽  
Mathematical Apparatus ◽  
Gas Pipelines ◽  
Gas Industry ◽  
Oil And Gas Production ◽  
Induction Brazing ◽  
Oil And Gas Pipelines

Abstract The article discusses the use of induction brazing for connecting oil and gas pipelines. The rationale for the choice of induction brazing in the oil and gas industry is considered. The work calculates the main parameters of the inductor. On the basis of calculations, using a mathematical apparatus, a schematic diagram of an inductor with a diameter of 90 mm is created for installing induction soldering. It is proposed to use and develop inductors of various diameters (60, 90 and 135 mm) to create an induction unit that allows connecting pipelines of oil and gas equipment in order to increase the reliability of equipment and the efficiency of oil and gas production and processing.

Mechanical Properties of API Class C Cement Contaminated with Oil-Based Mud OBM at Elevated Temperatures and Early Curing Time

2021 ◽  
Author(s):  
Nachiket Arbad ◽  
Fernando Rincon ◽  
Catalin Teodoriu ◽  
Mahmood Amani
Keyword(s):  
Mechanical Properties ◽  
Oil And Gas ◽  
Elevated Temperatures ◽  
Critical Role ◽  
Oil And Gas Industry ◽  
Experimental Investigations ◽  
Curing Time ◽  
Gas Industry ◽  
Ambient Room Temperature ◽  
Class C

Abstract The catastrophic events faced by the Oil and Gas industry in the past depict the importance of maintaining the integrity of the well. The cement acts as a crucial barrier throughout the life cycle of the well. The contamination of the cement occurs due to inefficiency in cementing practices and operations. Experimental investigations have been done on the reduction in mechanical properties of different API class cement considering contamination with water-based mud and oil-based mud. This study focuses on analyzing the changes in mechanical properties of API Class C cement on varying the following parameters: OBM contamination (0%, 0.6%, 1.1%, 2.2%, 4.3%) Curing time (4 hrs, 6 hrs, 8 hrs, 1 day, 3 days, 7 days) Temperature (25˚C, 75 ˚C) API recommendations were followed for preparing the cement slurries. The destructive, as well as non-destructive tests were carried out on the cement samples at ambient room temperature to measure the uniaxial compressive strength (UCS) for OBM contaminated class C cement slurries. The general trend observed is that the UCS increases with an increase in curing time and temperature. UCS decreases with an increase in OBM contamination. Logarithmic trends were obtained for UCS vs curing time for different contaminations at a given temperature. Exceptions were observed at lower curing times where contaminated samples showed better results than the neat cement slurries. These observations play a critical role in understanding contaminated cement behavior. This widespread work was carried out only on API Class C cement to provide reliable data for future references. The correlations presented in this paper will help operators estimate the deterioration in mechanical properties of Class C cement in the presence of low OBM contamination. Email: [email protected] & [email protected]

Al0.3CrxFeCoNi high-entropy alloys with high corrosion resistance and good mechanical properties

2021 ◽  
Vol 860 ◽  
pp. 158436
Author(s):  
Xiaolei Yan ◽  
Hui Guo ◽  
Wei Yang ◽  
Shujie J. Pang ◽  
Qing Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
High Entropy Alloys ◽  
High Corrosion Resistance ◽  
High Entropy ◽  
High Corrosion

scholarly journals Ni-Based CW6MC: Effect of the Internal Revert Recycle on the Soundness of the Alloy

2021 ◽  
Author(s):  
Andrea Gruttadauria ◽  
Silvia Barella ◽  
Anna Guerra
Keyword(s):  
Mechanical Properties ◽  
Material Properties ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Technical Specifications ◽  
Nickel Based Alloy ◽  
Acidic Environments ◽  
Mechanical Properties And Corrosion

AbstractThe CW6MC alloy is a nickel-based alloy used to withstand acidic environments, especially in the oil and gas industry where it is used in the production of valves, impellers, and pipes. This alloy is the foundry counterpart of the best known A625 for plastic deformation. Regarding nickel-based alloys, a scrap market like that in the case of steel has not yet been established, therefore, especially in the case of foundries, scrap generally comes from internal recycling (casting waste, feeders, sprues, runners, etc.) to be certain of the origin and quality of the material. In this work, four castings with different percentage of recycled content (0%, 30%, 70%, 100%) were produced in accordance with the technical specifications and analysed to evaluate the effect of scrap on the final chemical composition, the microstructure, the mechanical properties and corrosion resistance. Following the analyses carried out, it was determined that the amount of acceptable scrap content (of those analysed) without compromising the material properties corresponds to 30%.

Sign in / Sign up

Export Citation Format

Share Document