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The problem of corrosion in oil and gas pipelines is one of the major factors affecting the process safety and efficient sustainability development of the oil and gas industry. To gain a better understanding of global research trends and dynamics in the field of oil and gas pipeline corrosion and to advance the development of corrosion control technology, we conducted a literature review using a sample of 1,745 papers from the Web of Science (WOS) database published from 2002 to 2022. We employed a bibliometric analysis approach employed to investigate the distribution of publications over time, geographic regions, major organizations, major authors, journal cocitation, and literature cocitation, and to identify research hotspots and frontiers. The results revealed an exponential growth in the overall number of papers, with the most rapid increase occurring in the last 4 years. China, the US, Canada, the United Kingdom, and Brazil emerged as the most active countries in oil and natural gas pipeline corrosion research, and Mexico, Canada, and Australia also exhibited significant influence in the field. The journals Engineering Failure Analysis, Corrosion, and Corrosion Science had the highest number of publications and impact in this domain. Notably, Corrosion Science stood out as the most influential and highly regarded journal in the corrosion field. The fundamental theories and research framework in the realm of oil and natural gas pipeline corrosion have been primarily established, and a large number of research directions and frontier branches are emerging. The impact of flow parameters on corrosion, pipeline reliability assessment, and analysis of corrosion defects and failures are identified as the three main development paths in this field. In terms of research methodologies, machine learning techniques are becoming increasingly prevalent, with a growing number of studies adopting various machine learning methods. Among these methods, explainable deep learning is at the forefront of development in the field of oil and natural gas pipeline corrosion. [ABSTRACT FROM AUTHOR]

In the gas-gathering pipeline networks in gas fields, launching pigs in the downstream pipeline causes dramatic fluctuations in the gas transportation volume and pressure in upstream pipelines. It is important to shorten the launching period of pigs for the safe and smooth production of pipeline networks. In this study, a hydraulically activated power launching (HAPL) method was proposed based on the hydraulically activated power pigging (HAPP) method. Based on the proposed HAPL method, the launcher structure was designed. Then, a nonlinear dynamics model for launching pigs was established and relevant parameters were simulated. The simulation results showed that the launching period with the HAPL method was 76.5% shorter than that of the pneumatically activated power launching (PAPL) method under the same conditions. [ABSTRACT FROM AUTHOR]