US3148653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ship positioning
Assignee: Shell USA Inc
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Filing: 1962-05-17
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Granted: 1964-09-15
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Expires: 1982-05-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard L Shatto
- 👤 Dozier James Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:31
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/0007; E21B41/0014; G; G05; G05D; G05D1/00; G05D1/02; G05D1/0206; G05D1/0208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A TWO-STAGE CONTROL SYSTEM FOR DYNAMICALLY STATIONING A DRILLING VESSEL OVER A WELL LOCATION, SAID SYSTEM COMPRISING: A DRILL PIPE EXTENDING FROM SAID VESSEL TO A WELLHEAD DISPOSED AT SAID WELL LOCATION; A POSITION LOCATING MEANS DISPOSED TO SENSE THE DISPLACEMENT OF THE VESSEL FROM SAID WELL LOCATION ALONG TWO FIXED VESSEL REFERENCE AXES THAT ARE ORIENTED AT A FIXED ANGLE WITH RESPECT TO EACH OTHER; DISPLACEMENT DETECTING MEANS DISPOSED TO SENSE THE HORIZONTAL DISPLACEMENT OF SAID DRILL PIPE FROM A DESIRED POSITION ALONG TWO HORIZONTAL WELLHEAD AXES THAT ARE ORIENTED AT A FIXED ANGLE WITH RESPECT TO EACH OTHER; A DRILL PIPE CONTROLLER MEANS, SAID DISPLACEMENT DETECTING MEANS BEING CONNECTED TO SAID DRILL PIPE CONTROLLER TO DERIVE A PIPE DISPLACEMENT SIGNAL RELATED TO THE DIFFERENCE BETWEEN THE DISPLACEMENT SIGNALS AND A SET POINT; A CONVERTER MEANS, SAID DRILL PIPE CONTROLLER MEANS BEING CONNECTED TO SIAD CONVERTER MEANS TO VECTORIALLY RESOLVE THE PIPE DISPLACEMENT SIGNAL INTO COMPONENTS ALONG SAID REFERENCE AXES AND SUPPLY RELATED OUTPUT SIGNALS;
Claim 2
Dependent Claim
166 words
A TWO-STAGE CONTROL SYSTEM FOR DYNAMICALLY STATIONING A DRILLING VESSEL OVER A WELL LOCATION, SAID SYSTEM COMPRISING: A DRILL PIPE EXTENDING FROM SAID VESSEL TO A WELLHEAD DISPOSED AT SAID WELL LOCATION; A POSITION LOCATING MEANS DISPOSED TO SENSE THE DISPLACEMENT OF THE VESSEL FROM SAID WELL LOCATION ALONG TWO FIXED VESSEL REFERENCE AXES THAT ARE ORIENTED AT A FIXED ANGLE WITH RESPECT TO EACH OTHER; DISPLACEMENT DETECTING MEANS DISPOSED TO SENSE THE HORIZONTAL DISPLACEMENT OF SAID DRILL PIPE FROM A DESIRED POSITION ALONG TWO HORIZONTAL WELLHEAD AXES THAT ARE ORIENTED AT A FIXED ANGLE WITH RESPECT TO EACH OTHER; A DRILL PIPE CONTROLLER MEANS, SAID DISPLACEMENT DETECTING MEANS BEING CONNECTED TO SAID DRILL PIPE CONTROLLER TO DERIVE A PIPE DISPLACEMENT SIGNAL RELATED TO THE DIFFERENCE BETWEEN THE DISPLACEMENT SIGNALS AND A SET POINT; A CONVERTER MEANS, SAID DRILL PIPE CONTROLLER MEANS BEING CONNECTED TO SIAD CONVERTER MEANS TO VECTORIALLY RESOLVE THE PIPE DISPLACEMENT SIGNAL INTO COMPONENTS ALONG SAID REFERENCE AXES AND SUPPLY RELATED OUTPUT SIGNALS;
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |