Imaging for Borehole Wall by a Cylindrical Linear Phased Array
| العنوان: | Imaging for Borehole Wall by a Cylindrical Linear Phased Array |
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| المؤلفون: | Wu Xian-Mei, Gong Jun-Jie, Zhang Bi-Xing, Shi Fangfang, Zhang Cheng-guang |
| المصدر: | Chinese Physics Letters. 27:094301 |
| بيانات النشر: | IOP Publishing, 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | Transducer, Phased array, Acoustics, Borehole, General Physics and Astronomy, Cylinder, Ultrasonic sensor, Acoustic wave, Casing, Piezoelectricity, Geology |
| الوصف: | A new ultrasonic cylindrical linear phased array (CLPA) transducer is designed and fabricated for the borehole wall imaging in petroleum logging based on the previous theoretical researches. First, the CLPA transducer, which is made up of numbers of the piezoelectric elements distributed on the surface of a cylinder uniformly, is designed and fabricated. By transmitting and receiving acoustic waves with 16 active elements and using different groups of the elements under the control of the electric system, the CLPA can scan all areas of the borehole wall dynamically and rapidly without a traditional mechanism around the borehole axis. Then, the theoretical and experimental investigations are conducted in detail for the borehole wall scanning and imaging by the steel pipe and casing borehole with defects distributed in different shapes and directions. It is shown by experiments that the CLPA transducer has good focusing characteristic and good resolution for the borehole wall imaging in acoustic logging. |
| تدمد: | 1741-3540 0256-307X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::64d9437e9e2cb481301e352d4444713d https://doi.org/10.1088/0256-307x/27/9/094301 |
| رقم الأكسشن: | edsair.doi...........64d9437e9e2cb481301e352d4444713d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17413540 0256307X |
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