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| 论文题目 |
An acoustic imaging system of migration technique used in borehole |
| 论文题目（英文） |
An acoustic imaging system of migration technique used in borehole |
| 作者 |
林伟军 |
| 发表年度 |
2008 |
| 卷 |
27 |
| 期 |
3 |
| 页码 |
231-237 |
| 期刊名称 |
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| 摘要 |
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| 摘要_英文 |
In order to detect the damage of casing boreholes，an acoustic
imaging method with a two-dimensional ultrasonic array Was presented．Each element of the array independently emits down ultrasonic waves，the echoes received by aⅡelements are sampled and transmitted to a computer on ground surface，where the dynamic migration method is used to form a 2 or 3-dimensional image of the situation in the borehole．The numerical simulation and experiment are conducted that demonstrate a high imaging accuracy with a small number of elements used in array．Since the delay circuits used in the traditional phased array imaging system is not needed in this system，and all data process could be completed in a ground system，the complexity and the volume of system in borehole may be significantly simplified，which is
critical to the borehole instrument．
PA CS numbers：43．35 |
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