Patent US3385364A successfully refreshed from Google Patents.
US3385364A
Expired / Lapsed
US
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Formation fluid-sampling apparatus
Assignee: Schlumberger Technology Corp
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Filing: 1966-06-13
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Granted: 1968-05-28
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Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Frank R Whitten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:02
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A WELL TOOL ADAPTED FOR RECEPTION IN A WELL BORE HAVING FLUIDS THEREIN AND COMPRISING: A BODY; MEANS FOR ESTABLISHING A FLUID SEAL AGAINST A WALL IN A WELL BORE; INNER AND OUTER TUBULAR MEMBERS TELESCOPICALLY ARRANGED TOGETHER AND ADAPTED FOR MOVEMENT BETWEEN AN EXTENDED AND A RETRACTED POSITION, ONE OF SAID TELESCOPING MEMBERS BEING COUPLED TO SAID SEALING MEANS AND AT LEAST ONE OTHER OF SAID TELESCOPING MEMBERS BEING RECEIVED IN SAID BODY, MEANS FLUIDLY SEALING SAID BODY AND TELESCOPING MEMBERS TO ONE ANOTHER AND DEFINING FIRST AND SECOND SEALED CHAMBERS AT A REDUCED PRESSURE THEREBETWEEN AND AN ENCLOSED CHAMBER THEREBEHIND; AND MEANS SELECTIVELY OPERABLE FOR ADMITTING WELL FLUIDS INTO SAID ENCLOSED CHAMBER FOR EXTENDING SAID TELESCOPING MEMBERS.
Claim 2
Dependent Claim
119 words
A WELL TOOL ADAPTED FOR RECEPTION IN A WELL BORE HAVING FLUIDS THEREIN AND COMPRISING: A BODY; MEANS FOR ESTABLISHING A FLUID SEAL AGAINST A WALL IN A WELL BORE; INNER AND OUTER TUBULAR MEMBERS TELESCOPICALLY ARRANGED TOGETHER AND ADAPTED FOR MOVEMENT BETWEEN AN EXTENDED AND A RETRACTED POSITION, ONE OF SAID TELESCOPING MEMBERS BEING COUPLED TO SAID SEALING MEANS AND AT LEAST ONE OTHER OF SAID TELESCOPING MEMBERS BEING RECEIVED IN SAID BODY, MEANS FLUIDLY SEALING SAID BODY AND TELESCOPING MEMBERS TO ONE ANOTHER AND DEFINING FIRST AND SECOND SEALED CHAMBERS AT A REDUCED PRESSURE THEREBETWEEN AND AN ENCLOSED CHAMBER THEREBEHIND; AND MEANS SELECTIVELY OPERABLE FOR ADMITTING WELL FLUIDS INTO SAID ENCLOSED CHAMBER FOR EXTENDING SAID TELESCOPING MEMBERS.
References Cited (Backward Citations)
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Cited
US2674313A
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US2612346A
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US2855049A
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US3352361A
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US3261402A
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US3295615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |