US3384170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well-bore sampling device and process for its use
Assignee: Marathon Oil Co
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Filing: 1966-08-03
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Granted: 1968-05-21
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Expires: 1986-08-03
Abstract
No abstract record available.
Inventors
- 👤 Hendrik K Van Poollen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:59
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/081; E21B49/082
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
A FLUID SAMPLING FOR DEVICE FOR SIMULTANEOUSLY SAMPLING FLUIDS FROM A PLURALITY OF LEVELS WITHIN A WELL-BORE HAVING A PERFORATED WELL CASING WHICH PREVENTING SUBSTANTIAL MIXING OF FLUIDS DIFFERENT ELEVATIONS IN THE WELL-BORE AND ADDITIONALLY PREVENTING SUCH MIXING WITHIN THE SAMPLE DEVICE, SAID DEVICE COMPRISING IN COMBINATION: A SAMPLING DEVICE HAVING A PLURALITY OF FLUID-TIGHT COMPONENTS FOR RETAINING FLUID SAMPLES, EACH SAID COMPARTMENTS LEAST ONE CLOSEABLE APERTURE, SAID APERTURES BEING SO POSITIONED AS TO CORRESPOND WITH PERFORATIONS IN THE WELL CASING AND BEING FITTED WITH SEALING MEANS FOR SEALING SAID APERTURES IN COMMUNICATION WITH THE PERFORATIONS IN THE WELL CASING; MEANS FOR SEALING THE PERFORATIONS IN THE WELL CASING TO PREVENT SUBSTANTIAL FLOW THROUGH SAID PERFORATIONS INTO THE WELL-BORE AT TIMES WHEN SAID SAMPLING DEVICE IS NOT POSITIONED FOR SAMPLING SAID FLUIDS; MEANS FOR DISPLACING SAID PERFORATION SEALING MEANS AT TIMES WHEN SAID SAMPLING DEVICE IS POSITIONED FOR SAMPLING.
Claim 2
Dependent Claim
149 words
A FLUID SAMPLING FOR DEVICE FOR SIMULTANEOUSLY SAMPLING FLUIDS FROM A PLURALITY OF LEVELS WITHIN A WELL-BORE HAVING A PERFORATED WELL CASING WHICH PREVENTING SUBSTANTIAL MIXING OF FLUIDS DIFFERENT ELEVATIONS IN THE WELL-BORE AND ADDITIONALLY PREVENTING SUCH MIXING WITHIN THE SAMPLE DEVICE, SAID DEVICE COMPRISING IN COMBINATION: A SAMPLING DEVICE HAVING A PLURALITY OF FLUID-TIGHT COMPONENTS FOR RETAINING FLUID SAMPLES, EACH SAID COMPARTMENTS LEAST ONE CLOSEABLE APERTURE, SAID APERTURES BEING SO POSITIONED AS TO CORRESPOND WITH PERFORATIONS IN THE WELL CASING AND BEING FITTED WITH SEALING MEANS FOR SEALING SAID APERTURES IN COMMUNICATION WITH THE PERFORATIONS IN THE WELL CASING; MEANS FOR SEALING THE PERFORATIONS IN THE WELL CASING TO PREVENT SUBSTANTIAL FLOW THROUGH SAID PERFORATIONS INTO THE WELL-BORE AT TIMES WHEN SAID SAMPLING DEVICE IS NOT POSITIONED FOR SAMPLING SAID FLUIDS; MEANS FOR DISPLACING SAID PERFORATION SEALING MEANS AT TIMES WHEN SAID SAMPLING DEVICE IS POSITIONED FOR SAMPLING.
Claim 3
Dependent Claim
131 words
A PROCESS FOR SIMULTANEOUSLY SAMPLING FLUIDS FROM A PLURALITY OF LEVELS WITHIN A WELL-BORE WHILE PREVENTING SUBSTANTIAL MIXING OF FLUIDS FROM DIFFERENT ELVEATIONS IN SAID WELL-BORE AND ADDITIONALLY PERMITTING SUCH MIXING WITHIN THE SAMPLING DEVICE, SAID PROCESS COMPRISING, IN COMBINATION, THE STEPS OF PERFORATING SAID WELL-BORE CASING AT A PLURALITY OF ELEVATIONS, SEALING SAID PERFORATIONS WITH PERFORATION SEALING MEANS, ALLOWING SUFFICIENT TIME TO ELAPSE TO PERMIT THE FLUIDS WITHIN SAID FORMATION TO COME TO SUBSTANTIAL EQUILIBRIUM POSITIONING SAID SAMPLING DEVICE FOR SAID SAMPLING OF SAID FLUIDS, AFTER OR IMMEDIATELY BEFORE SAID POSITIONING OF SAID SAMPLING DEVICE, DEFLECTING SAID PERFORATION SEALING MEANS SO AS TO UNSEAL SAID PERFORATIONS, THEREAFTER WITHDRAWING SAMPLES THROUGH SAID PERFORATIONS INTO SAID SAMPLING DEVICE WHILE PREVENTING MIXING OF SAID SAMPLES WITHIN THE BORE-HOLE AND WITHIN THE SAMPLING DEVICE.
Claim 4
Dependent Claim
131 words
A PROCESS FOR SIMULTANEOUSLY SAMPLING FLUIDS FROM A PLURALITY OF LEVELS WITHIN A WELL-BORE WHILE PREVENTING SUBSTANTIAL MIXING OF FLUIDS FROM DIFFERENT ELVEATIONS IN SAID WELL-BORE AND ADDITIONALLY PERMITTING SUCH MIXING WITHIN THE SAMPLING DEVICE, SAID PROCESS COMPRISING, IN COMBINATION, THE STEPS OF PERFORATING SAID WELL-BORE CASING AT A PLURALITY OF ELEVATIONS, SEALING SAID PERFORATIONS WITH PERFORATION SEALING MEANS, ALLOWING SUFFICIENT TIME TO ELAPSE TO PERMIT THE FLUIDS WITHIN SAID FORMATION TO COME TO SUBSTANTIAL EQUILIBRIUM POSITIONING SAID SAMPLING DEVICE FOR SAID SAMPLING OF SAID FLUIDS, AFTER OR IMMEDIATELY BEFORE SAID POSITIONING OF SAID SAMPLING DEVICE, DEFLECTING SAID PERFORATION SEALING MEANS SO AS TO UNSEAL SAID PERFORATIONS, THEREAFTER WITHDRAWING SAMPLES THROUGH SAID PERFORATIONS INTO SAID SAMPLING DEVICE WHILE PREVENTING MIXING OF SAID SAMPLES WITHIN THE BORE-HOLE AND WITHIN THE SAMPLING DEVICE.
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |