US3624599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for switching geophones
Assignee: ExxonMobil Upstream Research Co
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Filing: 1969-12-03
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Granted: 1971-11-30
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Expires: 1989-12-03
Abstract
Abstract Apparatus for switching a seismic recorder from an areal array of geophones to a direct arrival seismic wave detector, controlled a radio signal at the recorder location which is transmitted to the geophone location to control the apparatus. The array of geophones is normally connected to a conductor line leading to the recorder. When the radio signal is detected, the direct arrival detector is connected to the line. Either detection of direct arrivals or passage of a given time interval from detection of the radio signal operates to reconnect the areal array to the line.
Inventors
- 👤 Haines C Hibbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:25
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
Apparatus for connecting reflection seismic wave detection means and first arrival seismic wave detection means to a recorder responsive to a control signal indicative of the production of seismic waves, comprising: switch means for connection to said reflection seismic wave detection means, for normally connecting said reflection detection means to said recorder; first circuit means responsive to said control signal for activating said switch means to disconnect said reflection seismic wave detection means from said recorder and to connect said first detection means to said recorder; said first circuit means including timing circuit means for deactivating said switch means to reconnect said reflection detection means to said recorder and disconnect said first arrival seismic wave detection means from said recorder after a predetermined time interval; and second circuit means connected to said timing circuit means and to said first arrival detection means to immediately time out said timing circuit and foreshorten said predetermined time interval responsive to the production by said first arrival detection means of signals of predetermined amplitude.
Claim 2
Dependent Claim
170 words
Apparatus for connecting reflection seismic wave detection means and first arrival seismic wave detection means to a recorder responsive to a control signal indicative of the production of seismic waves, comprising: switch means for connection to said reflection seismic wave detection means, for normally connecting said reflection detection means to said recorder; first circuit means responsive to said control signal for activating said switch means to disconnect said reflection seismic wave detection means from said recorder and to connect said first detection means to said recorder; said first circuit means including timing circuit means for deactivating said switch means to reconnect said reflection detection means to said recorder and disconnect said first arrival seismic wave detection means from said recorder after a predetermined time interval; and second circuit means connected to said timing circuit means and to said first arrival detection means to immediately time out said timing circuit and foreshorten said predetermined time interval responsive to the production by said first arrival detection means of signals of predetermined amplitude.
Claim 3
Dependent Claim
237 words
Apparatus for connecting reflection seismic wave detection means and first arrival seismic wave detection means to a recorder responsive to a control signal indicative of the production of seismic waves, comprising: switch means for connection to said reflection seismic wave detection means, for normally connecting said reflection detection means to said recorder; first circuit means responsive to said control signal for activating said switch means to disconnect said reflection seismic wave detection means from said recorder and to connect said first detection means to said recorder; said first circuit means including timing circuit means for deactivating said switch means to reconnect said reflection detection means to said recorder and disconnect said first arrival seismic wave detection means from said recorder after a predetermined time interval; second circuit means connected to said timing circuit means and to said first arrival detection means to immediately time out said timing circuit and foreshorten said predetermined time interval responsive to the production by said first arrival detection means of signals of predetermined amplitude; said first circuit means comprising detecting and pulse forminG means for detecting said control signal and for producing an electrical pulse signal for application to said timing circuit to activate said timing circuit; and said timing circuit comprising an integrator circuit including a capacitor, adapted to charge said capacitor responsive to said pulse signal and to discharge said capacitor as a time function to determine said predetermined interval.
Claim 4
Dependent Claim
237 words
Apparatus for connecting reflection seismic wave detection means and first arrival seismic wave detection means to a recorder responsive to a control signal indicative of the production of seismic waves, comprising: switch means for connection to said reflection seismic wave detection means, for normally connecting said reflection detection means to said recorder; first circuit means responsive to said control signal for activating said switch means to disconnect said reflection seismic wave detection means from said recorder and to connect said first detection means to said recorder; said first circuit means including timing circuit means for deactivating said switch means to reconnect said reflection detection means to said recorder and disconnect said first arrival seismic wave detection means from said recorder after a predetermined time interval; second circuit means connected to said timing circuit means and to said first arrival detection means to immediately time out said timing circuit and foreshorten said predetermined time interval responsive to the production by said first arrival detection means of signals of predetermined amplitude; said first circuit means comprising detecting and pulse forminG means for detecting said control signal and for producing an electrical pulse signal for application to said timing circuit to activate said timing circuit; and said timing circuit comprising an integrator circuit including a capacitor, adapted to charge said capacitor responsive to said pulse signal and to discharge said capacitor as a time function to determine said predetermined interval.
Claim 5
Dependent Claim
50 words
The apparatus of claim 2 wherein said second circuit means includes third circuit means connected to said integrator circuit responsive to a trigger signal to quickly discharge said capacitor, and fourth circuit means responsive to signals of predetermined amplitude from said first arrival detection means to produce said trigger signal.
Claim 6
Independent Claim
368 words
An apparatus for recording seismic wave first arrivals at a seismic wave detecting station and seismic wave reflections from subsurface reflecting horizons, including separate reflection detecting means and first arrival detecting means, recording means for recording electrical signals at a remote location from said first and second detecting means, a signal transmission link for transmitting detected seismic signals to said recording means, and circuit switching means for controllably connecting said signal transmission link to said first arrival detecting means or to said reflection detecting means, the improvement comprising: first circuit means connected to said transmission link for producing a control signal for transmission over said link to the location of said circuit switching means; second circuit means connected to said first arrival detecting means, to said switching means and to said signal transmission link for detecting said control signal, and responsive to said control signal to activate said circuit switching means to connect said first arrival detecting means to said transmission link, and responsive to detection of first arrivals by said first arrival detecting means to activate said circuit switching means to switch said transmission link to said reflection detecting means, said circuit switching means being further adapted to switch said transmission link to said reflection detecting means after a predetermined time interval should no first arrivals be detected thereby; said second circuit means comprising relay driver circuit means for normally activating said switching means to connect said signal transmission means to said reflection detecting means, and responsive to an activating signal applied thereto to connect said first arrival detection means to said transmission means; control circuit means connected to said transmission link and to said reflection detecting circuit means to apply an activating signal to said relay driver circuit means responsive to reception of said control signal from said first circuit means, and to remove said activating signal from said relay driver circuit means a predetermined time interval after reception of said control signal from said first circuit means; and means connected to said first arrival detection means and to said control circuit means for removing said activating signal from said relay driver circuit means responsive to detection of first arrival by said first arrival detection means.
Claim 7
Independent Claim
368 words
An apparatus for recording seismic wave first arrivals at a seismic wave detecting station and seismic wave reflections from subsurface reflecting horizons, including separate reflection detecting means and first arrival detecting means, recording means for recording electrical signals at a remote location from said first and second detecting means, a signal transmission link for transmitting detected seismic signals to said recording means, and circuit switching means for controllably connecting said signal transmission link to said first arrival detecting means or to said reflection detecting means, the improvement comprising: first circuit means connected to said transmission link for producing a control signal for transmission over said link to the location of said circuit switching means; second circuit means connected to said first arrival detecting means, to said switching means and to said signal transmission link for detecting said control signal, and responsive to said control signal to activate said circuit switching means to connect said first arrival detecting means to said transmission link, and responsive to detection of first arrivals by said first arrival detecting means to activate said circuit switching means to switch said transmission link to said reflection detecting means, said circuit switching means being further adapted to switch said transmission link to said reflection detecting means after a predetermined time interval should no first arrivals be detected thereby; said second circuit means comprising relay driver circuit means for normally activating said switching means to connect said signal transmission means to said reflection detecting means, and responsive to an activating signal applied thereto to connect said first arrival detection means to said transmission means; control circuit means connected to said transmission link and to said reflection detecting circuit means to apply an activating signal to said relay driver circuit means responsive to reception of said control signal from said first circuit means, and to remove said activating signal from said relay driver circuit means a predetermined time interval after reception of said control signal from said first circuit means; and means connected to said first arrival detection means and to said control circuit means for removing said activating signal from said relay driver circuit means responsive to detection of first arrival by said first arrival detection means.
References Cited (Backward Citations)
US2260217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |