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:
at least four wireless seismic data acquisition units, each unit comprising:
a casing;a battery;a radio transmitter;a radio receiver;a local clock;a local memory;a processor and a seismic sensor;wherein each of the at least four wireless seismic data acquisition units is configured to collect seismic data 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; a concentrator comprising a power source and a radio receiver; wherein the at least four wireless seismic data acquisition units are physically arranged so that at least one of the at least four wireless seismic data acquisition units is capable of radio transmission and reception communication with at least two other wireless seismic data acquisition units; wherein the concentrator is disposed within a transmission range of at least one wireless seismic data acquisition unit and is configured for radio reception communication with the at least one wireless seismic data acquisition unit; and wherein the at least four wireless seismic data acquisition units transmit the seismic data to a 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 at least four wireless seismic data acquisition units to a second of the at least four wireless 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 at least four wireless seismic data acquisition units to a fourth of the at least four wireless seismic data acquisition units, wherein the third of the at least four wireless seismic data acquisition units and the fourth of the at least four wireless seismic data acquisition units are different wireless seismic data acquisition units than the first of the at least four wireless seismic data acquisition units and the second of the at least four wireless 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 at least four wireless seismic data acquisition units to the concentrator; and the concentrator transmits at least the first portion of the seismic data to the control station via a data communications cable.