Apparatus and method for compressing seismic data
First Claim
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1. A method of acquiring seismic data, comprising:
- receiving seismic signals at a sensor from an earth formation at a data acquisition unit;
using a processor to create a plurality of samples from the received seismic signals, each created sample having a same bit length;
using the processor to arrange the plurality of samples in packets, wherein at least one of the packets includes compressed and uncompressed samples; and
storing the packets to a suitable storage medium.
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Abstract
A seismic data acquisition method is provided that includes receiving seismic signals at a sensor; sampling the received seismic signals into a plurality of samples, each sample having a selected number of bits (“bit length”); arranging the samples in packets, wherein some of the packets include one or more compressed samples; and transmitting the packet to a remote unit.
23 Citations
21 Claims
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1. A method of acquiring seismic data, comprising:
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receiving seismic signals at a sensor from an earth formation at a data acquisition unit; using a processor to create a plurality of samples from the received seismic signals, each created sample having a same bit length; using the processor to arrange the plurality of samples in packets, wherein at least one of the packets includes compressed and uncompressed samples; and storing the packets to a suitable storage medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of obtaining seismic data, comprising:
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transmitting an acoustic signal into the earth; receiving at an acquisition unit in the field seismic signals from one or more sensors in signal communication with the earth; sampling the received seismic signals at the acquisition unit into a plurality of samples; digitizing each sample at the data acquisition unit, each digitized sample having a same bit length; compressing digitized samples that meet a selected criterion; arranging the digitized samples into a plurality of packets, wherein at least one of the packets in the plurality of packets includes compressed and uncompressed digitized samples; and transmitting the plurality of packets for further processing. - View Dependent Claims (10, 11, 12)
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13. A seismic data acquisition apparatus, comprising:
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a circuit configured to receive seismic signals from a sensor and to provide a plurality of samples representative of the seismic signals, each sample having a same bit length; and a processor configured to; compress at least some of the samples; and arrange the plurality of samples into a plurality of packets so that at least one of the plurality of packets includes compressed and uncompressed samples. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification