发明名称 |
Cyclic noise removal in borehole imaging |
摘要 |
A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) transform (e.g., using a discrete cosine transform). The cyclic noise components (peaks) are removed from the transformed image which is then inverse transformed back into the spatial domain using an inverse 2-D transform to obtain a corrected image. An automated method enables the cyclic peaks to be identified and removed from the borehole image via downhole processing. |
申请公布号 |
US8682102(B2) |
申请公布日期 |
2014.03.25 |
申请号 |
US20100911851 |
申请日期 |
2010.10.26 |
申请人 |
SUGIURA JUNICHI;ZHANG JUN;LIU ZHIPENG;BOONEN PAUL;SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
SUGIURA JUNICHI;ZHANG JUN;LIU ZHIPENG;BOONEN PAUL |
分类号 |
G06K9/36;G01V3/00;G06F15/00;G06F17/14;G06K9/40;H04N7/18;H04N9/47 |
主分类号 |
G06K9/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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