Experimental investigation on mitigation of severe slugging in pipeline-riser system by quasi-plane helical pipe device

Yao, Tianxiang; Wu, Qingping; Liu, Zhigang; Zou, Suifeng; Xu, Qiang; Guo, Liejin

doi:10.1016/j.expthermflusci.2018.11.013

Cited by 29 publications

(1 citation statement)

References 27 publications

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“…Isolating the gas and oil effectively is a safety measure for the hot work. 33 Four sections of pipelines (1.5 m length and 0.1 m inner diameter each) and a digital display pressure control system were selected for the experiment to measure the maximum compressive capacity. The length of the hydrogel in the oil pipeline is taken as the experimental variable.…”

Section: Methodsmentioning

confidence: 99%

Preparation of an Intelligent Oleophobic Hydrogel and Its Application in the Replacement of Locally Damaged Oil Pipelines

Fan

Liu

Ouyang

et al. 2020

ACS Appl. Mater. Interfaces

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In the pipeline transportation process for crude oil, the most important and popular maintenance method for perforated and ruptured oil pipelines is the replacement of the damaged pipeline segment. However, this method has several disadvantages, including a complex process, large time consumption, and excessively high costs. The present study reported the preparation of a strong cross-linking hydrogel that served as a temporary blocking material during the long-distance oil pipeline partial replacement process. The prepared product was characterized by infrared spectroscopy, X-ray diffraction analysis, and scanning electron microscopy to analyze the microscopic reactions and structures. Orthogonal experiments for shear stress were performed to determine the optimal synthesis condition. The relevant experiments indicated that the proposed product can effectively isolate oil and oil gas, and a 4.5 m long hydrogel can resist the force of a 0.57 MPa overpressure. The blocked pipeline turned to a dredged state on changing the pipeline pressure. The flame resistance experiment showed that the hydrogel exhibited excellent flame resistance and could therefore ensure the safety of the hot work. On the basis of this hydrogel material, a new method for replacing the partially damaged oil pipeline was proposed.

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Section: Methodsmentioning

confidence: 99%