Corrosion fatigue behavior of S135 high‐strength drill pipe steel in a simulated marine environment

2018 ◽  
Vol 70 (4) ◽  
pp. 688-697 ◽  
Author(s):  
Sheji Luo ◽  
Ming Liu ◽  
Xiuzhou Lin
Keyword(s):  
Marine Environment ◽  
Corrosion Fatigue ◽  
Pipe Steel ◽  
Fatigue Behavior ◽  
Drill Pipe ◽  
High Strength

Selection and Evaluation of High-Strength Steel for Hutton TLP Tension Leg Elements

1984 ◽  
Vol 106 (1) ◽  
pp. 32-37 ◽  
Author(s):  
M. M. Salama ◽  
J. H. Tetlow
Keyword(s):  
Corrosion Fatigue ◽  
High Strength Steel ◽  
Fatigue Behavior ◽  
High Strength ◽  
Mooring System ◽  
Test Program ◽  
The North ◽  
Extensive Evaluation ◽  
The North Sea ◽  
Control Procedures

The development of the tension leg platform (TLP) for the Hutton Field in the North Sea represents the first application of this deepwater concept. The use of vertical tension legs as the mooring system is the most novel part of the TLP design. One of the unique features of the tension legs is the use of 92.5-mm (3.64-in.) thick tubulars forged from 3 1/2 percent Ni-Cr-Mo-V high-strength steel (795 MPa (115.3 ksi) minimum yield strength) as mooring elements. Because of the importance of these elements to the survival of the TLP, the chemical composition and the steelmaking procedure were critically examined and optimized. In addition, extensive evaluation of the corrosion fatigue behavior of the steel was undertaken. This paper discusses the basis for the steel selection and specification, the results of the rigorous corrosion fatigue test program, and the assessment of the variation of properties along the length and through the thickness of full-size components. These results illustrate the suitability of the proposed high-strength steel for the mooring system application and establish confidence in both steelmaking and quality control procedures.

The Development and Experimental Study on High Strength and Toughness Drill Pipe Steel

2011 ◽  
Vol 287-290 ◽  
pp. 1024-1032
Author(s):  
Feng Hu ◽  
Li Hong Han ◽  
Hang Wang ◽  
Yao Rong Feng ◽  
He Lin Li
Keyword(s):  
Electron Microscopy ◽  
Yield Strength ◽  
Pipe Steel ◽  
Drill Pipe ◽  
Control Process ◽  
High Strength ◽  
Alloy Element ◽  
Deep Wells ◽  
Alloy Carbon ◽  
The Impact

With the development of oil industry, the high strength-toughness drill pipe suited to the task of sour environment and ultra deep wells would be considered more and more important. A new drill pipe steel, which was designed with the proper decrease of C content and increase of Cr, Ni, Mo, Nb and V alloy element, was developed and studied in this study. Large deformation hot rolling technology was used to obtain ultrafine grains microstructure. The results showed that the yield strength of this new drill pipe steel had reached 150ksi with the impact toughness more than 150J, which can perfectly meet the “leak-before-break” crack principle. The new low-alloy carbon steel drill pipe in the controlled yield strength grade 150ksi showing excellent sulfide stress cracking resistance and strength-toughness have been developed. Based on the observation of scanning electron microscopy and transmission electron microscopy, several kinds of carbide particles including (Nb, Mo, V)C with nanometer scale, were distributed in tempered sorbite matrix. The objective of this work was to study the relationship between carbide precipitation and strength-toughness by optimizing element design, thermo mechanical control process and heat treatment of drill pipe steel.

Study on Corrosion Fatigue Behavior of a High Strength Steel with Carbide Free Bainite/Martensite Duplex-Phase Structure

2007 ◽  
Vol 539-543 ◽  
pp. 4509-4514
Author(s):  
Bing Zhe Bai ◽  
Xue Xia Xu ◽  
Jia Lin Gu ◽  
Dong Yuan Wei ◽  
Hong Sheng Fang
Keyword(s):  
Corrosion Fatigue ◽  
High Strength Steel ◽  
Phase Structure ◽  
Fatigue Behavior ◽  
High Strength

Precipitation Behavior and its Effect on Strengthening of High Strength and Toughness Drill Pipe Steel

2011 ◽  
Vol 335-336 ◽  
pp. 587-594
Author(s):  
Feng Hu ◽  
Li Hong Han ◽  
Hang Wang ◽  
Yao Rong Feng ◽  
He Lin Li
Keyword(s):  
Pipe Steel ◽  
Rapid Development ◽  
Drill Pipe ◽  
High Strength ◽  
Alloy Element ◽  
Deep Wells ◽  
Transmission Electron ◽  
Alloy Carbide ◽  
The Impact ◽  
Leak Before Break

With the rapid development of oil industry, the high strength-toughness drill pipe suited to the task of sour environment and ultra deep wells would be considered more and more important. A new drill pipe steel, which was designed with the proper decrease of C content and increase of Cr, Ni, Mo, Nb and V alloy element, was developed and studied in this study. The results showed that the yield strength of this new drill pipe steel had reached 150ksi with the impact toughness more than 150J, which can perfectly meet the “leak-before-break” crack principle. Based on the observation of optical microscopy and transmission electron microscopy, several kinds of carbide particles including (Nb, Mo, V)C with nanometer scale, were distributed in tempered sorbite matrix. The objective of this work was to study the relationship between multiple alloy-carbide precipitation and mechanical property of this drill pipe steel.

scholarly journals Relationship between microstructure and corrosion fatigue behavior in a high strength steel.

1986 ◽  
Vol 35 (388) ◽  
pp. 19-24 ◽  
Author(s):  
Harushige TSUBAKINO ◽  
Takeshi SAKAI ◽  
Kwang Bae KIM ◽  
Koji YAMAKAWA
Keyword(s):  
Corrosion Fatigue ◽  
High Strength Steel ◽  
Fatigue Behavior ◽  
High Strength
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