Patent US3188607A successfully refreshed from Google Patents.
US3188607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well geophone
Assignee: ExxonMobil Oil Corp
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Filing: 1959-08-26
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Granted: 1965-06-08
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Expires: 1979-08-26
Abstract
No abstract record available.
Inventors
- 👤 John H Woodworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:42
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A WELL GEOPHONE COMPRISING A CENTRAL MANDREL HAVING A CENTRAL CHANNEL EXTENDING FROM ONE END TOWARD AN OPPOSITE END THEREOF; A PLURALITY OF TRANSDUCERS; EACH OF SAID TRANSDUCERS SUPPORTED ON SAID MANDREL AND IN FLOW COMMUNICATION WITH SAID CENTRAL CHANNEL, MEANS FOR EXPOSING THE TRANSDUCERS TO WELL PRESSURES; SAID TRANSDUCERS BEING ARRANGED IN PAIRS WITH THE TRANSDUCERS OF EACH PAIR BEING OPPOSITELY DISPOSED ON SAID MANDREL AND BEING CONNECTED ELECTRICALLY IN SERIES AIDING RELATION FOR NOISE CAN CELLATION; AND MEANS FOR RENDERING SAID TRANSDUCERS RESPONSIVELY SOLELY TO DYNAMIC WELL PRESSURE CHANGES; SAID MEANS COMPRISING MEANS FORMING A RESERVOIR FOR RECEIVING A PRESSURE-TRANSMITTING LIQUID AND RESPONSIVE TO WELL PRESSURES, AND A FLOW PASSAGE INCLUDING A FIRST FLOW RESTRICTION INTERCONNECTING SAID RESERVOIR AND SAID CENTRAL CHANNEL FOR TRANSMISSION TO SAID TRANSDUCERS SOLELY OF CHANGES IN STATIC WELL PRESSURES.
Claim 2
Dependent Claim
136 words
A WELL GEOPHONE COMPRISING A CENTRAL MANDREL HAVING A CENTRAL CHANNEL EXTENDING FROM ONE END TOWARD AN OPPOSITE END THEREOF; A PLURALITY OF TRANSDUCERS; EACH OF SAID TRANSDUCERS SUPPORTED ON SAID MANDREL AND IN FLOW COMMUNICATION WITH SAID CENTRAL CHANNEL, MEANS FOR EXPOSING THE TRANSDUCERS TO WELL PRESSURES; SAID TRANSDUCERS BEING ARRANGED IN PAIRS WITH THE TRANSDUCERS OF EACH PAIR BEING OPPOSITELY DISPOSED ON SAID MANDREL AND BEING CONNECTED ELECTRICALLY IN SERIES AIDING RELATION FOR NOISE CAN CELLATION; AND MEANS FOR RENDERING SAID TRANSDUCERS RESPONSIVELY SOLELY TO DYNAMIC WELL PRESSURE CHANGES; SAID MEANS COMPRISING MEANS FORMING A RESERVOIR FOR RECEIVING A PRESSURE-TRANSMITTING LIQUID AND RESPONSIVE TO WELL PRESSURES, AND A FLOW PASSAGE INCLUDING A FIRST FLOW RESTRICTION INTERCONNECTING SAID RESERVOIR AND SAID CENTRAL CHANNEL FOR TRANSMISSION TO SAID TRANSDUCERS SOLELY OF CHANGES IN STATIC WELL PRESSURES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |