https://doi.org/10.1140/epjs/s11734-022-00666-8
Regular Article
Relationship between water injection volume and liquid injection pressure under the condition of pipeline deformation
1
Hydraulic Fracturing and Oil-Gas Migration Development Center, Hefei University of Technology, 230009, Hefei, China
2
School of Resources and Environmental Engineering, Hefei University of Technology, 230009, Hefei, China
Received:
23
June
2022
Accepted:
6
September
2022
Published online:
23
September
2022
Water injection in a closed pipe at one end causes force deformation of the pipe. The expansion changes of the pipeline under different liquid injection pressures are studied combined with theoretical and experimental results. A new relationship between liquid injection pressure and water injection volume of the pipeline is proposed based on elastic mechanics, which is analyzed and verified. The experimental results show that at the early stage, the variation of water injection amount and pipeline deformation show nonlinear change, and the change rate liquid injection volume is constantly decreasing after the liquid injection pressure is increased to some value. Subsequently, there is a linear relationship between water injection and water injection pressure. The inner diameter and length of pipeline have significance influences on the deformation of the pipeline. With the increase of inner diameter and length of the pipeline, the rising rate of water injection volume is accelerated. The proposed equation can well express the relationship between the water injection change volume and the pipeline deformation under water injection pressures. The theory could provide useful theoretical reference for the study of pipeline blockage in the future.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
