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Structural Engineering and Mechanics Volume 28, Number 3, February20 2008 , pages 335-351 DOI: https://doi.org/10.12989/sem.2008.28.3.335 |
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Design on a new oil well test shock absorber under impact load |
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Yuanxun Wang, Peng Zhang, Zhijian Cui and Chuanyao Chen
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| Abstract | ||
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Continuous operation of test and measurement is a new operating technique in the petroleum exploitation, which combines perforation with test and measurement effectively. In order to measure the original pressure of stratum layer exactly and prevent testing instrument from being impaired or damaged, a suitable shock absorber is urgently necessary to research. Based on the attempt on the FEM analysis and experiment research, a new shock absorber is designed and discussed in this paper. 3D finite element model is established and simulated accurately by LS-DYNA, the effect and the dynamic character of the shock absorber impact by half sinusoidal pulse force under the main lobe frequency are discussed both on theoretics and experiment. It is shown that the new designed shock absorber system has good capability of shock absorption for the impact load. | ||
| Key Words | ||
| shock absorber; disturbing force; groundsill; absorption coefficient; impact strength; main lobe frequency. | ||
| Address | ||
| Yuanxun Wang and Peng Zhang: Huazhong University of Science and Technology, Wuhan, 430074, P.R. China Zhijian Cui: Huazhong University of Science and Technology, Wuhan, 430074, P.R. China Xi?an Shiyou University, Xi?an, 710065, P.R. China Chuanyao Chen: Huazhong University of Science and Technology, Wuhan, 430074, P.R. China | ||