US2799474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for taking samples of fluids in relatively soft geological formations
Assignee: Services Petroliers Schlumberger SA
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Filing: 1955-06-16
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Granted: 1957-07-16
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Expires: 1975-06-16
Abstract
No abstract record available.
Inventors
- 👤 Schneersohn Boris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:46
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
APPARATUS FOR SAMPLING THE FLUID CONTENTS OF GEOLOGICAL FORMATIONS AND THE LIKE COMPRISING, A HOLLOW TUBULAR PROJECTILE ADAPTED TO BE DRIVEN INTO A FORMATION, A FORWARDLY TAPERED NOSE PORTION TIGHTLY FITTED ON SAID PROJECTILE AND HAVING FLUID PASSAGE MEANS IN THE SIDE WALLS THEREOF COMMUNICATING WITH THE INTERIOR OF SAID PROJECTILE, FRANGIBLE CLOSURE MEANS NORMALLY PREVENTING COMMUNICATION BETWEEN SAID FLUID PASSAGE MEANS AND THE EXTERIOR OF SAID NOSE PORTION AND ADAPTED TO BE RENDERED INEFFECTIVE WHEN SAID PROJECTILE IS DRIVEN INTO A FORMATION AND MEANS INTERPOSED BETWEEN SAID CLOSURE MEANS AND SAID FLUID PASSAGE MEANS FOR KEEPING SOLID MATTER OUT OF SAID FLUID PASSAGE MEANS.
Claim 2
Dependent Claim
105 words
APPARATUS FOR SAMPLING THE FLUID CONTENTS OF GEOLOGICAL FORMATIONS AND THE LIKE COMPRISING, A HOLLOW TUBULAR PROJECTILE ADAPTED TO BE DRIVEN INTO A FORMATION, A FORWARDLY TAPERED NOSE PORTION TIGHTLY FITTED ON SAID PROJECTILE AND HAVING FLUID PASSAGE MEANS IN THE SIDE WALLS THEREOF COMMUNICATING WITH THE INTERIOR OF SAID PROJECTILE, FRANGIBLE CLOSURE MEANS NORMALLY PREVENTING COMMUNICATION BETWEEN SAID FLUID PASSAGE MEANS AND THE EXTERIOR OF SAID NOSE PORTION AND ADAPTED TO BE RENDERED INEFFECTIVE WHEN SAID PROJECTILE IS DRIVEN INTO A FORMATION AND MEANS INTERPOSED BETWEEN SAID CLOSURE MEANS AND SAID FLUID PASSAGE MEANS FOR KEEPING SOLID MATTER OUT OF SAID FLUID PASSAGE MEANS.
References Cited (Backward Citations)
US2055506A
Cited
US2288210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |