Dip detection in logging image processing
AssigneeHalliburton Energy Services, Inc.
InventorsNam Nguyen, David Orlando Torres, Gary Wayne Kainer
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Abstract
A method for imaging a downhole formation. The method includes combining the captured images to generate a partial image of the formation, wherein the partial image includes captured images separated by gaps representing portions of the formation not captured with sensors what were disposed downhole. The method includes locating dips in the formation within the partial image and interpolating the partial image using the located dips within the partial image.
Claims20
A method for imaging a downhole formation, the method comprising:
- combining captured images to generate a partial image of a formation, wherein the partial image includes the captured images acquired from at least one sensor disposed on a tool within the formation, the captured images separated by gaps representing portions of the formation not captured by the at least one sensor;
- locating dips in the formation within the partial image, to provide located dips, wherein locating dips in the formation within the partial image comprises identifying peak sections in the partial image based on a differential of each vertical line and portions of the partial image along a depth;
- and
- interpolating the partial image, using the located dips within the partial image, to construct image data for the gaps of the partial image to create a full interpolated image of the formation.
A system for determining a dip of a formation, the system comprising:
- a logging tool to be positioned in a borehole within the formation, the logging tool comprising
- at least one sensor disposed on one or more pads, wherein the at least one sensor is to detect signals representing portions of captured images of the formation;
- a processor;
- and
- a machine-readable medium having program code executable by the processor to cause the processor to,
- generate a combined image of the formation that includes the captured images;
- and
- detect a dip in the formation within the combined image, wherein the program code to detect the dip also includes program code to cause the processor to,
- determine a differential of vertical lines and portions of the combined image along a depth;
- identify peak sections in the combined image based on the differential of each vertical line;
- combine the peak sections that are connected to form a peak area for each portion of the combined image detected by the at least one sensor;
- and
- perform a dip-fitting over the peak area using a sliding window along a depth axis to locate the dip.
One or more non-transitory machine-readable media comprising instructions executable by a processor to cause the processor to:
- combine captured images to generate a partial image of a formation, wherein the partial image includes the captured images acquired from at least one sensor disposed on a tool within the formation, the captured images separated by gaps representing portions of the formation not captured by the at least one sensor;
- locate dips in the formation within the partial image, to provide located dips, wherein the location of dips in the formation within the partial image comprises an identification of peak sections in the partial image based on a differential of each vertical line and portions of the partial image along a depth;
- and
- interpolate the partial image, using the located dips within the partial image, to construct image data for the gaps of the partial image to create a full interpolated image of the formation.
Dependencies are inferred from the claim text.