E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/12 (2006.01) G01V 1/22 (2006.01) G01V 3/34 (2006.01)
Patent
CA 2711908
Borehole image data is compressed and transmitted to the surface one or more pixilated traces at a time. The compression methodology typically includes transform, quantization, and entropy encoding steps. The invention advantageously provides an efficient fixed point Karhünen-Loeve like transform for compressing sensor data. A significant reduction in latency is achieved as compared to the prior art.
Des données d'images de sondage sont compressées et transmises vers la surface, un ou plusieurs tracés pixelisés à la fois. La méthodologie de compression comprend généralement des étapes de transformation, de quantification, et de codage entropique. L'invention concerne avantageusement une transformation efficace de type Karhünen-Loeve à point fixe qui permet de compresser les données des capteurs. Une diminution significative de la latence est obtenue en comparaison avec l'art antérieur.
Borden Ladner Gervais Llp
Smith International Inc.
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