STRENGTH CALCULATION AND EXPERIMENTAL STUDY OF SPHERICAL COVER FOR FLOATING COUPLING
As the pressure-bearing part of the floating coupler,the strength of the spherical cover directly affects the pressure-bearing and sealing function of the floating coupler in the process of lowering the casing.Firstly,the theoretical analysis and simulation of the stress of the spherical cover were...
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| Format: | Article |
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| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2024-01-01
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| Series: | Jixie qiangdu |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.06.029 |
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| Summary: | As the pressure-bearing part of the floating coupler,the strength of the spherical cover directly affects the pressure-bearing and sealing function of the floating coupler in the process of lowering the casing.Firstly,the theoretical analysis and simulation of the stress of the spherical cover were carried out,and the strength calculation formula of the spherical cover was established based on the spherical shell model under three-way stresses,taking into account the material and compression the damage failure form.Borosilicate glass was selected as the material and its compressive strength was obtained by the compression test.The stress state of the spherical cover was obtained by simulation calculation and the dangerous area was determined.Then the burst pressure of the spherical cover was obtained by the pressure test,and the test and calculation results were compared.The results show that the opening pressure of the spherical cover was 46.2 MPa±3.8 MPa,and no residual glass was inside the floating joint after breaking.The maximum broken particles are less than 10 mm×9 mm×3 mm,which meets the strength requirement of the spherical cover.The results of the study are of great significance to the application of floating coupling in horizontal wells under casing. |
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| ISSN: | 1001-9669 |