US3205477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroacoustical logging while drilling wells
Assignee: Individual
•
Filing: 1961-12-29
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Granted: 1965-09-07
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 David C Kalbfell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/12; E21B47/14; E21B47/16; G; G01; G01V; G01V1/00; G01V1/40; G01V1/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A LOGGING WHILE DRILLING SYSTEM OF THE CHARACTER DISCLOSED, THE COMBINATION OF A DRILL PIPE STRING, A DRILL BIT AT THE BOTTOM OF THE DRILL PIPE STRING, MEANS DISPOSED WITHIN THE DRILL PIPE STRING AT OR NEAR THE DRILL BIT FOR GENERATING PRE-ARRANGED AND COHERENTLY RELATED FREQUENCY SHIFT KEYING SIGNALS REPRESENTATIVE OF A PLURALITY OF MEASURED PARAMETERS OF INTEREST IN THE WELL, ELECTROACOUSTICAL TRANSDUCER MEANS STRUCTURALLY INTEGRATED WITHIN THE DRILL PIPE STRING FOR TRANSMITTING SAID SIGNALS TO THE SURFACE ACOUSTICALLY THERETHROUGH, AND COHERENT DECISION MAKING RECEIVER MEANS DISPOSED AT THE SURFACE FOR RECEIVING SAID TRANSMITTED SIGNALS AND COMPARING THEIR RELATIVE SIGNAL STRENGTH EACH WITH THE OTHERS THEREBY TO DETERMINE WHICH OF THE SIGNALS IS BEING RECEIVED AT ANY TIME.
Claim 2
Dependent Claim
120 words
IN A LOGGING WHILE DRILLING SYSTEM OF THE CHARACTER DISCLOSED, THE COMBINATION OF A DRILL PIPE STRING, A DRILL BIT AT THE BOTTOM OF THE DRILL PIPE STRING, MEANS DISPOSED WITHIN THE DRILL PIPE STRING AT OR NEAR THE DRILL BIT FOR GENERATING PRE-ARRANGED AND COHERENTLY RELATED FREQUENCY SHIFT KEYING SIGNALS REPRESENTATIVE OF A PLURALITY OF MEASURED PARAMETERS OF INTEREST IN THE WELL, ELECTROACOUSTICAL TRANSDUCER MEANS STRUCTURALLY INTEGRATED WITHIN THE DRILL PIPE STRING FOR TRANSMITTING SAID SIGNALS TO THE SURFACE ACOUSTICALLY THERETHROUGH, AND COHERENT DECISION MAKING RECEIVER MEANS DISPOSED AT THE SURFACE FOR RECEIVING SAID TRANSMITTED SIGNALS AND COMPARING THEIR RELATIVE SIGNAL STRENGTH EACH WITH THE OTHERS THEREBY TO DETERMINE WHICH OF THE SIGNALS IS BEING RECEIVED AT ANY TIME.
References Cited (Backward Citations)
US3079549A
Cited
US3015801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |