A novel PIG and an intelligent pigging scheme based on Deep-learning technology

Yao, Benchun; He, Zongjian; Lü, Na; Zhang, Shimin

doi:10.1016/j.ijpvp.2022.104803

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…This paper examines the fundamental mechanisms of the rubbing behavior in waxy oil deposit breaking (essentially the wax-oil gel) in deepwater pipelines. To meet the high reliability requirements, various experimental techniques are used to design the new structures of in-pipe robots [1][2][3][4][5]. A PIG (pipeline inspection gauge) is a cylindrical tool [1] that scrapes deposits from the inside surface, as shown in Figure 1a-d.…”

Section: Introductionmentioning

confidence: 99%

“…To meet the high reliability requirements, various experimental techniques are used to design the new structures of in-pipe robots [1][2][3][4][5]. A PIG (pipeline inspection gauge) is a cylindrical tool [1] that scrapes deposits from the inside surface, as shown in Figure 1a-d. Failures in the predictions of wax scraping efficiency have been linked with little understanding of the elastomer-on-metal rubbing contact.…”

Section: Introductionmentioning

confidence: 99%

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Friction Performance of Rubber Sealing Disc Inside Pipe Robots for the Production of High-Paraffin Oil

Tan,

Luo,

et al. 2024

Lubricants

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The in-pipe robot is the most commonly used technique in offshore pipelines. The use of rubber sealing discs is important for in-pipe robots to ensure that the robots are moved by fluid pressures inside offshore pipelines. This paper focuses on the measuring and modeling of the wax–oil gel-breaking process at the soft frictional area between sealing discs and the pipe wall. In this study, a detailed characterization of the gel-scraping process and in situ probing portable microscopy are performed. Two contributions are made in this study. First, a direct observation of wax–oil deposition breaking is employed to detect the minute changes at the in-pipe robot. Second, we find that a simple function is possible to describe the relationship between the wax contents and dewaxing efficiency, in which the debris material removal ratio (DRR) is discussed. Thus, the gel deposition-breaking phenomena are quite different under the influence of rubber sealing discs. This result is further confirmed by the real contact ratio measurements. It is important to research the sealing disc further and apply it more in the petroleum industry, especially in in-pipe robots for deepwater pipeline systems.

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