Method and system for transmission of seismic data

摘要

The transmission method utilizes multiple seismic acquisition units within an array as intermediate short range radio receivers/transmitters to pass collected seismic data in relay fashion back to a control station. Any one seismic unit in the array is capable of transmitting radio signals to several other seismic units positioned within radio range of the transmitting unit, thus allowing the system to select an optimal transmission path. Utilizing an array of seismic units permits transmission routes back to a control station to be varied as needed. In transmissions from the most remote seismic unit to the control station, each unit within a string receives seismic data from other units and transmits the received seismic data along with the receiving unit's locally stored seismic data. Preferably, as a transmission is passed along a chain, it is bounced between seismic units so as to be relayed by each unit in the array.

主权项

1. A seismic data transmission system, comprising:
a plurality of seismic data acquisition units that acquire and transmit seismic data from an acoustic signal that propagates into earth and is reflected by subsurface lithologic formations or fluid layers of the earth, each of the plurality of seismic data acquisition units comprising:
a transmitter;a receiver;a local clock;a local memory; anda processor; the system further comprising:
a control station;a geophone associated with each of the plurality of seismic data acquisition units;a plurality of concentrators, each of the plurality of concentrators being a different type of device than each of the plurality of seismic data acquisition units and comprising a transmitter, a receiver, mass memory, a local clock, and a processor, a first of the plurality of concentrators connected to the control station by a data communications cable;at least one of the plurality of concentrators in a wireless transmission range of at least one of the plurality of seismic data acquisition units;wherein the plurality of seismic data acquisition units acquire the seismic data responsive to propagation of the acoustic signal into the earth and reflections of the acoustic signal by the subsurface lithologic formations or fluid layers of the earth, the seismic data including information relating to the subsurface lithologic formations or fluid layers; andthe plurality of seismic data acquisition units transmit the seismic data to the control station via:
a first short range wireless transmission, during a time period, using a first transmission parameter, of at least a first portion of the seismic data from a first of the plurality of seismic data acquisition units to a second of the plurality of seismic data acquisition units;a second short range wireless transmission, during the time period, using a second transmission parameter, of at least a second portion of the seismic data from a third of the plurality of seismic data acquisition units to a fourth of the plurality of seismic data acquisition units, wherein the third of the plurality of seismic data acquisition units and the fourth of the plurality of seismic data acquisition units are different data acquisition units than the first of the plurality of seismic data acquisition units and the second of the plurality of seismic data acquisition units;wherein the first transmission parameter and the second transmission parameter substantially prevent communication interference between the first short range wireless transmission and the second short range wireless transmission during the time period; anda third short range wireless transmission of at least the first portion of the seismic data from the second of the plurality of seismic data acquisition units to the first of the plurality of concentrators; andthe first of the plurality of concentrators transmits at least the first portion of the seismic data to the control station via the data communications cable.