Invention Application
US20060031017A1 Method and apparatus for improved depth matching of borehole images or core images
有权
改善钻孔图像或核心图像深度匹配的方法和装置
- Patent Title: Method and apparatus for improved depth matching of borehole images or core images
- Patent Title (中): 改善钻孔图像或核心图像深度匹配的方法和装置
-
Application No.: US10537893Application Date: 2003-10-27
-
Publication No.: US20060031017A1Publication Date: 2006-02-09
- Inventor: Gilles Mathieu , Jean-Pierre Delhomme , Philip Cheung , Yiny Wang
- Applicant: Gilles Mathieu , Jean-Pierre Delhomme , Philip Cheung , Yiny Wang
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Priority: EP02293082.0 20021213
- International Application: PCT/EP03/12205 WO 20031027
- Main IPC: G01V1/40
- IPC: G01V1/40

Abstract:
A method for depth matching borehole images and/or core section images is disclosed wherein signals from sensors at different levels on a logging tool are converted into an averaged signal representing the average bed signal at the center of the borehole at each of the different levels. A depth matching technique is applied to the averaged signals from the sensors at different levels on the logging tool to determine the optimum depth offset necessary for matching two sets of signals from sensors at the different levels of the logging tool. In an alternative embodiment of the invention a Hough transform is utilized to process the well log images and generate three-dimensional images in Hough space. The three dimensional images are converted into two-dimensional extremum curves. Depth matching is performed on the two dimensional extremum curves to calculate an offset to match the two dimensional extremum curves. The calculated offset is then applied to the well log images to depth match them.
Public/Granted literature
- US07346454B2 Method and apparatus for improved depth matching of borehole images or core images Public/Granted day:2008-03-18
Information query