Engineering Corrosion Protection in High Temperature High Pressure Sour Gas Wells

2015 ◽  
Author(s):  
Sunder Ramachandran ◽  
Ghaithan A. Al-Muntasheri ◽  
Hasan Al-Ajwad ◽  
Anuj Gupta ◽  
Jairo Leal ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Corrosion Protection ◽  
Gas Wells ◽  
High Temperature High Pressure ◽  
Sour Gas

scholarly journals Corrosion-resistant systems of formate packer fluid for G3/N80/TP110SS pipes at high temperature, high pressure and high H 2 S/CO 2 ratios

2018 ◽  
Vol 5 (7) ◽  
pp. 180405 ◽  
Author(s):  
Peng Xu ◽  
Zhengwu Tao ◽  
Zhihong Wang
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Corrosion Rate ◽  
Corrosion Protection ◽  
High Pressures ◽  
Gas Production ◽  
Corrosion Mechanism ◽  
Acid Gas ◽  
High Acid ◽  
High Temperature High Pressure

A series of corrosion problems caused by high-temperature, high-pressure and high-acid gas environments has been an issue in oil and gas production for a long time. During the development of a high-acid gas field, the petroleum pipe is subjected to many aspects of corrosion, and the corrosion mechanism is complicated by the condition of the coexistence of H 2 S/CO 2 . Based on the study of the corrosion problem associated with the formate packer fluid in Southwest China, three kinds of steels were studied for corrosion prevention in the alloy G3/N80 steel/TP110SS steel. The study shows that the corrosion rate of the formate packer fluid is low, but corrosion is severe in environments characterized by high temperatures, high pressures and high-acid gas contents. Based on the consideration of cost and the difficulty of realization, an anti-corrosion system was constructed based on the existing packer fluid, mainly through the introduction of a variety of anti-corrosion additives. Through the selection of various additives and corrosion experiments, a corrosion protection system of formate packer fluid was developed. Corrosion tests show that the corrosion rate of the system must be less than 0.076 mm yr −1 to achieve the purpose of corrosion protection. The formate packer fluid with corrosion protection can meet the needs of the current application.

Analysis on Casing Size and Steel Grade and Application in High-Temperature High-Pressure Gas Wells

2013 ◽  
Vol 703 ◽  
pp. 143-146
Author(s):  
Ling Feng Li
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Natural Gas ◽  
Gas Production ◽  
Steel Grade ◽  
Production Engineering ◽  
Gas Wells ◽  
Gas Well ◽  
Size Series ◽  
High Temperature High Pressure

Analysis on casing size and steel grade and application in high-temperature high-pressure gas wells are important in natural gas production engineering. This paper presents the standard casing size series, casing steel grade standard and code, types of casing steel grade, main problems in high-temperature high-pressure gas wells, using casing material suitable as solving means for high-temperature high-pressure gas well and application. For application, the study above is good and easy for on-the-spot application.

scholarly journals Research on Prediction Methods of Wellbore Hydrate Formation of Ultra-Deep Gas Wells in Northwest Sichuan

2021 ◽  
Vol 329 ◽  
pp. 01076
Author(s):  
Qilin Liu ◽  
Jian Yang ◽  
Lang Du ◽  
Jianxun Jiang ◽  
Dan Ni ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Natural Gas ◽  
Gas Hydrate ◽  
Hydrate Formation ◽  
Natural Gas Hydrate ◽  
Gas Wells ◽  
Prediction And Control ◽  
Sulfur Containing ◽  
High Temperature High Pressure

According to the formation and handling situation of hydrate in ultra-deep high-pressure sulfurcontaining gas wells in northwest Sichuan, the formation conditions of natural gas hydrate was studied based on previous studies on hydrate, the molecular dynamics of natural gas hydrate and the multiphase flow law of high-temperature high-pressure high-sulfur-containing gas wellbore were combined, and the pressure prediction model with high-temperature high-pressure sulfur-containing gas wells as the target was built. The chemical and physical control methods of wellbore hydrate plugging were discussed to provide the scientific theoretical basis for the prediction and control of hydrate in high-temperature high-pressure high-sulfurcontaining gas wells.

Predicting Temperature and Pressure in High-Temperature–High-Pressure Gas Wells

2011 ◽  
Vol 29 (2) ◽  
pp. 132-148 ◽  
Author(s):  
Z. Wu ◽  
J. Xu ◽  
X. Wang ◽  
K. Chen ◽  
X. Li ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Gas Wells ◽  
Temperature And Pressure ◽  
High Temperature High Pressure
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