页岩气水平井套管串基频计算与研究

IF 0.9 4区工程技术 Q3 ENGINEERING, MULTIDISCIPLINARY

Journal of Engineering Research Pub Date : 2024-09-01 DOI:10.1016/j.jer.2023.11.026

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引用次数: 0

摘要

鉴于页岩气水平井套管串的基频难以通过数值模拟和实验方法准确获得，提出了基于相似性模型理论和传递矩阵法的研究方法。根据相似性理论中的相似性准则，建立相似性模型，得到固有频率的相似比。利用传递矩阵法，分析了刚性支撑水平井套管串实验模型的基频，并建立了其数学模型。通过对实验模型基频的计算和振动实验结果，验证了模型的正确性。此外，还计算了带有 20 个刚性集中器的 2500 米长页岩气水平井套管串的基频。计算结果表明，相似性理论与传递矩阵法相结合，可以实现大型水平井套管串固有频率的求解，具有可靠、准确、易于编程等特点。

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Calculation and research of fundamental frequency of casing string in shale gas horizontal wells

In view of the fact that the fundamental frequency of the casing string in shale gas horizontal wells is difficult to be accurately obtained by numerical simulations and experimental methods, a research method is proposed based on the similarity model theory and the transfer matrix method. According to the similarity criterion from the similarity theory, a similarity model is established, and the similarity ratio of the natural frequency is obtained. Through the use of the transfer matrix method, the fundamental frequency of the experimental model of the casing string in horizontal wells with rigid support is analyzed, and its mathematical model is established. Through the calculation of the fundamental frequency of the experimental model and the result of the vibration experiment, the correctness of the model is verified. Besides, the fundamental frequency of a 2500 m long shale gas horizontal well casing string with 20 rigid centralizers is calculated. The calculation results show that the combination of the similarity theory and the transfer matrix method can realize the solution of the natural frequency of the casing string in large-scale horizontal wells, which is reliable, accurate and easy to be programmed.

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来源期刊

Journal of Engineering Research ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.60

自引率

10.00%

发文量

181

审稿时长

20 weeks

期刊介绍： Journal of Engineering Research (JER) is a international, peer reviewed journal which publishes full length original research papers, reviews, case studies related to all areas of Engineering such as: Civil, Mechanical, Industrial, Electrical, Computer, Chemical, Petroleum, Aerospace, Architectural, Biomedical, Coastal, Environmental, Marine & Ocean, Metallurgical & Materials, software, Surveying, Systems and Manufacturing Engineering. In particular, JER focuses on innovative approaches and methods that contribute to solving the environmental and manufacturing problems, which exist primarily in the Arabian Gulf region and the Middle East countries. Kuwait University used to publish the Journal "Kuwait Journal of Science and Engineering" (ISSN: 1024-8684), which included Science and Engineering articles since 1974. In 2011 the decision was taken to split KJSE into two independent Journals - "Journal of Engineering Research "(JER) and "Kuwait Journal of Science" (KJS).