Dynamic image compression for imaging while drilling applications
AssigneeBaker Hughes Incorporated
InventorsTrung Hai Le, Andreas Hartmann
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Abstract
A dynamic data compression system for forming and transmitting data from a downhole location within a borehole penetrating the earth to a surface location includes a data source that forms raw data sets of a formation contacting the borehole, the raw data sets being formed at a fixed rate and a data rate sampler that determines a transmission rate of a transmission channel. The system also includes a compression engine configured to compress the raw data sets according to compression parameters to form compressed data sets. The compression parameters are dynamically changed based on the transmission rate.
Claims20
A dynamic data compression system for forming and transmitting data from a downhole location within a borehole penetrating the earth to a surface location, the system comprising:
- a data source that forms raw data sets of a formation contacting the borehole, the raw data sets being formed at a fixed rate;
- a data rate sampler that determines a transmission rate of a transmission channel;
- and
- a compression engine configured to compress the raw data sets according to compression parameters to form compressed data sets, wherein the compression parameters are dynamically changed based on the transmission rate.
A method of dynamically compressing resistivity images formed by an imager of a formation contacting a borehole penetrating the earth, the method comprising:
- compressing a raw image received from the imager to form an intermediate image, the intermediate image having a compression factor and being compressed according to compression parameters;
- determining a transmission rate of a transmission channel communicatively coupling the imager to a surface location;
- determining with an image compression engine located in the borehole that a needed compression ratio that is based on the transmission rate is greater than one;
- dynamically adjusting the compression parameters to form adjusted compression parameters such that the compression ratio is less than one;
- and
- compressing the raw image according the adjusted compression parameters.
Dependencies are inferred from the claim text.