Systems and methods for seismic data acquisition
First Claim
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1. A method for use in seismic data collection, comprising:
- disposing in an array a plurality of seismic data acquisition modules that are operative to wirelessly communicate acquired seismic data;
assigning a first acquisition module a shared multiplexing sequence, wherein in successive transmission periods, said first acquisition module advances sequentially through a plurality of multiplexing signatures of said multiplexing sequence; and
assigning a second acquisition module said shared multiplexing sequence, wherein in successive transmission periods, said second acquisition module advances sequentially through said plurality of multiplexing signatures of said shared multiplexing sequence;
wherein said first acquisition module is out of phase from said second acquisition module with respect to said shared multiplexing sequence.
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Abstract
Systems and methods for seismic data acquisition utilizing wireless modules to perform real time data read out. The wireless modules may be assigned a shared multiplexing sequence through which each module advances in successive transmission periods. Wireless modules belonging to a shared collision domain may be operated out of phase from one another with respect to the shared multiplexing signature sequence. As such, a dynamic multiplexing regime may be implemented. The shared multiplexing signature sequence may include, among others, a plurality of different frequencies, a plurality of different codes, or a plurality of different discrete time periods.
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Citations
18 Claims
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1. A method for use in seismic data collection, comprising:
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disposing in an array a plurality of seismic data acquisition modules that are operative to wirelessly communicate acquired seismic data; assigning a first acquisition module a shared multiplexing sequence, wherein in successive transmission periods, said first acquisition module advances sequentially through a plurality of multiplexing signatures of said multiplexing sequence; and assigning a second acquisition module said shared multiplexing sequence, wherein in successive transmission periods, said second acquisition module advances sequentially through said plurality of multiplexing signatures of said shared multiplexing sequence; wherein said first acquisition module is out of phase from said second acquisition module with respect to said shared multiplexing sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for use in seismic data collection, comprising:
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disposing a plurality of wireless data modules in a seismic survey area that are operative to wirelessly communicate seismic data; assigning each of said plurality of wireless data modules in said seismic survey area a shared multiplexing sequence for use in transmitting said seismic data, wherein in successive transmission periods, each of said plurality of wireless data modules advances sequentially through a plurality of multiplexing signatures of said shared multiplexing sequence; transmitting seismic data from at least a first wireless data module and a second wireless data module using said shared multiplexing sequence in a first shared transmission period; detecting a collision of transmitted seismic data from said first wireless data module and said second wireless data module during said first shared transmission period; and modifying, in response to said detecting, a relative position of said first wireless data module and said second wireless data module within said shared multiplexing sequence such that the first and second wireless data modules are out of sequence with respect to said shared multiplexing sequence. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification