Generating a complete borehole image using transformation
AssigneeHalliburton Energy Services, Inc.
InventorsHo Yin Ma, Ning Tu, Xiang Wu
Life of this patent
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Abstract
A system can receive downhole acquisition data relating to a wellbore. The system can pre-process the downhole acquisition data. The system can generate an incomplete borehole image using the downhole acquisition data. The system can determine a sparse representation based on the incomplete borehole image by performing an optimization with respect to the incomplete borehole image. The system can generate a complete borehole image based on an inverse of the sparse representation.
Claims20
A system comprising:
- a processor;
- and
- a non-transitory computer-readable medium comprising instructions that are executable by the processor to cause the processor to perform operations comprising:
- processing downhole acquisition data relating to a wellbore by replicating data from at least two azimuthally oriented positions to represent a 2D-image that resembles the wellbore;
- generating a first borehole image using the downhole acquisition data, at least a first portion of first known data of the first borehole image corresponding to at least a second portion of second known data of the first borehole image, wherein the first known data are at a first position of the first borehole image and the second known data are at a second position of the first borehole image;
- determining a sparse representation based on the first borehole image;
- and
- generating a second borehole image based on an inverse of the sparse representation.
A method comprising:
- processing downhole acquisition data relating to a wellbore by replicating data from at least two azimuthally oriented positions to represent a 2D-image that resembles the wellbore;
- generating a first borehole image using the downhole acquisition data, at least a first portion of first known data of the first borehole image corresponding to at least a second portion of second known data of the first borehole image, wherein the first known data are at a first position of the first borehole image and the second known data are at a second position of the first borehole image;
- determining a sparse representation based on the first borehole image;
- and
- generating a second borehole image based on an inverse of the sparse representation.
A non-transitory computer-readable medium comprising instructions that are executable by a processing device for causing the processing device to perform operations comprising:
- processing downhole acquisition data relating to a wellbore by replicating data from at least two azimuthally oriented positions to represent a 2D-image that resembles the wellbore;
- generating a first borehole image using the downhole acquisition data, at least a first portion of first known data of the first borehole image corresponding to at least a second portion of second known data of the first borehole image, wherein the first known data are at a first position of the first borehole image and the second known data are at a second position of the first borehole image;
- determining a sparse representation based on the first borehole image;
- and
- generating a second borehole image based on an inverse of the sparse representation.
Dependencies are inferred from the claim text.