US3261402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation testing apparatus
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1965-09-13
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Granted: 1966-07-19
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Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Frank R Whitten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:30
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A FLUID-TESTING TOOL COMPRISING: A BODY ADAPTED TO BE LOWERED THROUGH A WELL BORE EXTENDING THROUGH EARTH FORMATIONS; LONGITUDINALLY SPACED SAMPLE-ADMITTING MEANS ON ONE SIDE OF SAID BODY AND INCLUDING SEALING MEANS ABOUT EACH OF SAID SAMPLE-ADMITTING MEANS ADAPTED TO BE URGED INTO SEALING ENGAGEMENT WITH A WELL BORE MEANS IN SAID TOOL FOR PLACING SAID SEALING MEANS INTO SEALING ENGAGEMENT WITH A WELL BORE, ONE OF SAID SAMPLE-ADMITTING MEANS INCLUDING FLOW-SAMPLING MEANS MOUNTED FOR TRANSVERSE MOVEMENT THROUGH SAID SEALING MEANS INTO EARTH FORMATIONS WHEN SAID SEALING MEANS ARE IN SEALING ENGAGEMENT WITH A WELL BORE; AND HYDRAULIC MEANS FOR URGING SAID SAMPLING MEANS INTO EARTH FORMATIONS, THE OTHER OF SAID SAMPLE-ADMITTING MEANS BEING NORMALLY CLOSED TO FLUID FLOW FROM THE WELL BORE AND INCLUDING SELECTIVELY OPERABLE PERFORATING MEANS FOR SELECTIVELY OPENING SAID OTHER SAMPLE-ADMITTING MEANS THROUGH SAID SEALING MEANS.
Claim 2
Dependent Claim
140 words
A FLUID-TESTING TOOL COMPRISING: A BODY ADAPTED TO BE LOWERED THROUGH A WELL BORE EXTENDING THROUGH EARTH FORMATIONS; LONGITUDINALLY SPACED SAMPLE-ADMITTING MEANS ON ONE SIDE OF SAID BODY AND INCLUDING SEALING MEANS ABOUT EACH OF SAID SAMPLE-ADMITTING MEANS ADAPTED TO BE URGED INTO SEALING ENGAGEMENT WITH A WELL BORE MEANS IN SAID TOOL FOR PLACING SAID SEALING MEANS INTO SEALING ENGAGEMENT WITH A WELL BORE, ONE OF SAID SAMPLE-ADMITTING MEANS INCLUDING FLOW-SAMPLING MEANS MOUNTED FOR TRANSVERSE MOVEMENT THROUGH SAID SEALING MEANS INTO EARTH FORMATIONS WHEN SAID SEALING MEANS ARE IN SEALING ENGAGEMENT WITH A WELL BORE; AND HYDRAULIC MEANS FOR URGING SAID SAMPLING MEANS INTO EARTH FORMATIONS, THE OTHER OF SAID SAMPLE-ADMITTING MEANS BEING NORMALLY CLOSED TO FLUID FLOW FROM THE WELL BORE AND INCLUDING SELECTIVELY OPERABLE PERFORATING MEANS FOR SELECTIVELY OPENING SAID OTHER SAMPLE-ADMITTING MEANS THROUGH SAID SEALING MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |