The Design and Application of High-Yield Strength, Sour Service Casing In High Pressure High Temperature North Sea Wells

1991 ◽  
Author(s):  
D.W. Marshall ◽  
I.R. Robertson
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Yield Strength ◽  
North Sea ◽  
High Yield ◽  
High Yield Strength ◽  
High Pressure High Temperature ◽  
Sour Service ◽  
Design And Application

scholarly journals Oxidation of High Yield Strength Metals Tungsten and Rhenium in High-Pressure High-Temperature Experiments of Carbon Dioxide and Carbonates

Crystals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 676 ◽  
Author(s):  
Raquel Chuliá-Jordán ◽  
David Santamaría-Pérez ◽  
Tomás Marqueño ◽  
Javier Ruiz-Fuertes ◽  
Dominik Daisenberger
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Yield Strength ◽  
High Pressures ◽  
Chemical Reactivity ◽  
High Yield ◽  
Reaction Products ◽  
High Yield Strength ◽  
High Pressure High Temperature ◽  
Diamond Anvil

The laser-heating diamond-anvil cell technique enables direct investigations of materials under high pressures and temperatures, usually confining the samples with high yield strength W and Re gaskets. This work presents experimental data that evidences the chemical reactivity between these refractory metals and CO2 or carbonates at temperatures above 1300 °Ϲ and pressures above 6 GPa. Metal oxides and diamond are identified as reaction products. Recommendations to minimize non-desired chemical reactions in high-pressure high-temperature experiments are given.

scholarly journals Improved High-Pressure, High-Temperature (HPHT) Materials Qualification using Dissolved H<sub>2</sub>S Concentration as the Sour Service Scalable Metric

CORROSION ◽  
10.5006/3867 ◽  
2021 ◽  
Author(s):  
BRENT SHERAR ◽  
Peter Ellis II ◽  
Jing Ning
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Gas Phase ◽  
Stress Cracking ◽  
High Pressure High Temperature ◽  
Sulfide Stress ◽  
Sulfide Stress Cracking ◽  
Sour Service ◽  
The Relationship ◽  
Severity Parameter

Gas phase H&lt;sub&gt;2&lt;/sub&gt;S partial pressure (P&lt;sub&gt;H2S&lt;/sub&gt;) is associated with sulfide stress cracking (SSC) and is routinely used as the ‘scalable’ parameter to qualify materials for high-pressure, high-temperature (HPHT) wells. Candidate materials for HPHT wells routinely require ANSI/NACE MR0175/ISO 15156 compliance because a few mole ppm of H&lt;sub&gt;2&lt;/sub&gt;S at high pressure may place the well beyond the 0.05 psia (0.3 kPa) sour service threshold. P&lt;sub&gt;H2S&lt;/sub&gt; has been accepted historically as the scalable sour severity parameter. However, as the total pressure increases, the relationship between P&lt;sub&gt;H2S&lt;/sub&gt; and the dissolved H&lt;sub&gt;2&lt;/sub&gt;S concentration becomes non-linear. This limits the robustness of P&lt;sub&gt;H2S&lt;/sub&gt; as the sour severity metric. Thus, ISO 15156-1:2020 now permits the use of H2S fugacity (f&lt;sub&gt;H2S&lt;/sub&gt;), H&lt;sub&gt;2&lt;/sub&gt;S activity (a&lt;sub&gt;H2S&lt;/sub&gt;), and H&lt;sub&gt;2&lt;/sub&gt;S aqueous concentration (C&lt;sub&gt;H2S&lt;/sub&gt;) as alternatives for sour testing. This recent revision is based on evidence that f&lt;sub&gt;H2S&lt;/sub&gt; and C&lt;sub&gt;H2S&lt;/sub&gt; each provide better correlations to SSC at elevated total pressures than P&lt;sub&gt;H2S&lt;/sub&gt;. This paper will address the merits and challenges of using f&lt;sub&gt;H2S&lt;/sub&gt; or C&lt;sub&gt;H2S&lt;/sub&gt; to define sour severity: We argue that C&lt;sub&gt;H2S&lt;/sub&gt; is a practical, experimentally verifiable approach, which can be used to validate ionic-equation of state (EOS) frameworks used to characterize mildly sour HPHT environments.

Friction-wear failure mechanism of tubing strings used in high-pressure, high-temperature and high-yield gas wells

Wear ◽  
2021 ◽  
Vol 468-469 ◽  
pp. 203576
Author(s):  
Xiaoqiang Guo ◽  
Jun Liu ◽  
Liming Dai ◽  
Qingyou Liu ◽  
Dake Fang ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Failure Mechanism ◽  
High Yield ◽  
Gas Wells ◽  
High Pressure High Temperature

Wear Experiment and Influencing Factors Analysis of 13Cr-L80 Tubing String in High-Pressure, High-Temperature and High-Yield Gas Wells

2021 ◽  
Vol 1026 ◽  
pp. 169-175
Author(s):  
Xiao Qiang Guo ◽  
Jun Liu ◽  
Liang Huang ◽  
An Chao Wei ◽  
Da Ke Fang
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Service Life ◽  
Longitudinal Vibration ◽  
Control Variable ◽  
Contact Load ◽  
High Yield ◽  
Gas Wells ◽  
High Pressure High Temperature ◽  
Tubing String

Due to wear failures caused by tubing string vibrations in high-pressure, high-temperature and high-yield (3H) gas wells, a wear experiment was performed on the 13Cr-L80 tubing string. The influence of contact load, friction frequency, and reciprocating stroke length on the wear characteristics of the tubing string were effectively analyzed using the control variable method. The results demonstrate that, the wear patterns of the tubing-casing were primarily abrasive and adhesive wears, with minimal corrosion wear. The wear amount of tubing increases linearly with the increase of contact load and reciprocating stroke, but increases nonlinearly with the increase of friction frequency, and the friction coefficient of tubing string do not change with the increase of contact load, friction frequency and reciprocating stroke. In-field operations, the service life of the tubing string in 3H gas wells can be effectively augmented by reducing the contact load and longitudinal vibration displacement of the tubing-casing, maintaining the vibration frequency of the tubing string below 1.5 Hz. These results provide useful guidance for designing and implementing approaches to improve the service life of tubing strings in high-yield gas wells.

REPUBLIC HP 9-4-20

Alloy Digest ◽  
1971 ◽  
Vol 20 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Yield Strength ◽  
Physical Properties ◽  
Surface Treatment ◽  
Heat Treating ◽  
High Yield ◽  
High Yield Strength ◽  
Temperature Performance

Abstract REPUBLIC HP 9-4-20 is designed especially for applications requiring optimum combinations of relatively high yield strength and toughness with good weldability. This alloy is capable of providing 180,000 psi yield strength in combination with a Charpy V-notch value of 50 ft-lb at 75 F in plate thicknesses up to at least 4 inches. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-270. Producer or source: Republic Steel Corporation.

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