Invention Grant
- Patent Title: Cyclic noise removal in borehole imaging
- Patent Title (中): 井眼成像中的循环噪声消除
-
Application No.: US12486954Application Date: 2009-06-18
-
Publication No.: US08655104B2Publication Date: 2014-02-18
- Inventor: Jun Zhang , Zhipeng Liu , Paul Boonen
- Applicant: Jun Zhang , Zhipeng Liu , Paul Boonen
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agent Kimberly Ballew; Christopher Streinz
- Main IPC: G06K9/36
- IPC: G06K9/36 ; G06K9/40 ; G06K9/00 ; G06F15/00 ; H04N9/47 ; G01V3/00

Abstract:
A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) Fourier Transform, removing cyclic noise components from the transformed image, and inverse transforming the image back into the spatial domain using an inverse 2-D Fourier Transform. The cyclic noise component may also be isolated by subtracting the corrected image from the original image or by removing all non-cyclic noise components from the transformed image prior to inverse transforming. Removal of the cyclic noise from a borehole image tends to enable the identification of borehole features and provide for improved accuracy in formation parameter evaluation. Evaluation of the cyclic noise component may also enable the source of the noise to be identified and mitigated.
Public/Granted literature
- US20100322533A1 Cyclic Noise Removal in Borehole Imaging Public/Granted day:2010-12-23
Information query