US3301064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure recorder
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1964-12-10
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Granted: 1967-01-31
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Expires: 1984-12-10
Abstract
No abstract record available.
Inventors
- 👤 Iii James W Kisling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:28
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A PRESSURE-MEASURING APPARATUS FOR USE IN A WELL BORE WHERE THE APPARATUS INCLUDES A HOUSING, MEANS WITHIN THE HOUSING WHICH ARE RESPONSIVE TO CHANGES OF PRESSURE FOR PROVIDING INDICATIONS OF PRESSURES ENCOUNTERED IN THE WELL BORE, AND MEANS PROVIDING ACCESS FOR WELL FLUIDS TO THE HOUSING TO AFFECT SAID PRESSURE-RESPONSIVE MEANS, THE IMPROVEMENT COMPRISING: BELLOWS MEANS HERMETICALLY SEALING OFF THE INTERIOR OF SAID HOUSING FROM GAS CONTAINED IN WELL FLUIDS AND PERMITTING THE INTERIOR OF SAID HOUSING TO BE FILLED WITH A PRESSURE-TRANSMITTING FLUID; AND ELASTOMER MEANS SEALING OFF SAID BELLOWS MEANS FROM ACCESS TO WELL FLUIDS AND FORMING A SPACE FOR RECEIVING A PRESSURE-TRANSMITTING FLUID, SAID BELLOWS MEANS AND ELASTOMER MEANS PERMITTING PRESSURE IN THE WELL BORE TO BE SENSED WITHIN SAID HOUSING WITHOUT EXPOSING THE INTERIOR OF SAID HOUSING TO GAS OR FLUID FOUND IN A WELL.
Claim 2
Dependent Claim
140 words
IN A PRESSURE-MEASURING APPARATUS FOR USE IN A WELL BORE WHERE THE APPARATUS INCLUDES A HOUSING, MEANS WITHIN THE HOUSING WHICH ARE RESPONSIVE TO CHANGES OF PRESSURE FOR PROVIDING INDICATIONS OF PRESSURES ENCOUNTERED IN THE WELL BORE, AND MEANS PROVIDING ACCESS FOR WELL FLUIDS TO THE HOUSING TO AFFECT SAID PRESSURE-RESPONSIVE MEANS, THE IMPROVEMENT COMPRISING: BELLOWS MEANS HERMETICALLY SEALING OFF THE INTERIOR OF SAID HOUSING FROM GAS CONTAINED IN WELL FLUIDS AND PERMITTING THE INTERIOR OF SAID HOUSING TO BE FILLED WITH A PRESSURE-TRANSMITTING FLUID; AND ELASTOMER MEANS SEALING OFF SAID BELLOWS MEANS FROM ACCESS TO WELL FLUIDS AND FORMING A SPACE FOR RECEIVING A PRESSURE-TRANSMITTING FLUID, SAID BELLOWS MEANS AND ELASTOMER MEANS PERMITTING PRESSURE IN THE WELL BORE TO BE SENSED WITHIN SAID HOUSING WITHOUT EXPOSING THE INTERIOR OF SAID HOUSING TO GAS OR FLUID FOUND IN A WELL.
References Cited (Backward Citations)
US2816440A
Cited
US3177707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |