Comprehensive analysis of natural gas processing schemes for power generation

Corrosion is a continuous chemical process in the oil and gas industry. This phenomenon affects the integrity of the pipeline system that carries natural gas. The formation of corrosion products inside the pipes is due to the presence of CO2, H2S, and the presence of microorganisms. For this reason, this work tries to prevent the corrosion of gas pipelines through operational methods such as the identification of potential threats, risk assessment, the assessment of the integrity of the pipeline system, and response and mitigation of the threats found. In the first place, the potential threats must be identified by reviewing the available documentation of the operation of the gas pipeline under study, the risks and possible consequences must be analyzed at this point. Then, these risks must be evaluated through qualitative methods such as the categorization of the probability of their occurrence and a category of the consequence of the risk. As a result, the two methods must be interpolated to design a risk matrix and evaluate the risks in consequences and the probability of their occurrence. Then, the integrity of the piping system must be valued through intrusive and non-intrusive methods. To apply either of the two methods, it must be taken into account that intrusive methods are those that interfere with the structure of the gas pipeline and non-intrusive methods are those that do not interfere with the structure of the gas pipes. Likewise, intrusive methods are ranked with the use of cleaning "Pigs", pressure tests, and direct assessment of external corrosion. On the other hand, non-intrusive methods are ranked with the use of Magnetic Flux Leakage (MFL), Ultrasound (UT), Electric Acoustic Transducers (EMAT), and Eddy currents (ET). To use an intrusive and non-intrusive method, the operational characteristics of the study pipeline must be known. Next, the risks found must be mitigated and through the selection of construction materials, use of organic and inorganic coatings, pigs run, leak studies, corrective and preventive maintenance, and finally, provide recommendations so that the risks do not return, do not occurred or if it happens, they can be mitigated quickly. Finally, a concept map is developed for decision making to mitigate early corrosion.

• मुख्य लेखक: Yánez Herrera, Jhenson Wladimir (author)
• स्वरूप: bachelorThesis
• भाषा: eng
• प्रकाशित: 2022
• विषय: Corrosión; Matriz de riesgo; Gas natural; Gasoductos; Valorización de la integridad; Respuesta y mitigación; Risk matrix; Pipelines; Integrity assessment; Response and mitigation
• ऑनलाइन पहुंच: http://repositorio.yachaytech.edu.ec/handle/123456789/511