US3233453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill stem testing methods
Assignee: Schlumberger Well Surveying Corp
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Filing: 1962-06-25
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Granted: 1966-02-08
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Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Maurice P Lebourg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:03
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A METHOD OF TESTING EARTH FORMATIONS TRAVERSED BY A WELL BORE WHEREIN FORMATION FLUIDS ARE INADEQUATE TO PROVIDE A SURFACE FLOW, COMPRISING THE STEPS OF: ISOLATING A FORMATION WITH A PACKING ELEMENT ATTACHED TO A FIRST TUBING STRING WHICH EXTENDS BETWEEN THE EARTH''S SURFACE AND THE ISOLATED FORMATION; INTRODUCING A SECOND TUBING STRING INTO THE FIRST TUBING STRING TO EXTEND BELOW ANY FLUID LEVEL IN THE FIRST TUBING STRING; PROVIDING METERED INPUT GAS UNDER SUFFICIENT PRESSURE TO ONE OF SAID TUBING STRINGS TO DISPLACE A FLUID RECOVERY COMPRISED OF THE INPUT GAS AND FORMATION FLUIDS THROUGH THE OTHER TUBING STRING; MAINTAINING THE FLUID RECOVERY IN A CLOSED SYSTEM TO PREVENT THE ESCAPE OF ANY CONSTITUENTS FROM THE FLUID RECOVERY; TAKING THE FLUID RECOVERY FROM THE CLOSED SYSTEM AT THE EARTH''S SURFACE AND SEPARATING THE GAS AND LIQUID CONSTITUENTS FROM THE FLUID RECOVERY; AND MEASURING THE SEPARATED GAS AT THE EARTH''S SURFACE WHEREBY THE DIFFERENCE BETWEEN THE SEPARATED GAS AND THE INPUT GAS IS DETERMINATIVE OF NET FORMATION GAS IN THE FLUID RECOVERY.
Claim 2
Independent Claim
172 words
A METHOD OF TESTING EARTH FORMATIONS TRAVERSED BY A WELL BORE WHEREIN FORMATION FLUIDS ARE INADEQUATE TO PROVIDE A SURFACE FLOW, COMPRISING THE STEPS OF: ISOLATING A FORMATION WITH A PACKING ELEMENT ATTACHED TO A FIRST TUBING STRING WHICH EXTENDS BETWEEN THE EARTH''S SURFACE AND THE ISOLATED FORMATION; INTRODUCING A SECOND TUBING STRING INTO THE FIRST TUBING STRING TO EXTEND BELOW ANY FLUID LEVEL IN THE FIRST TUBING STRING; PROVIDING METERED INPUT GAS UNDER SUFFICIENT PRESSURE TO ONE OF SAID TUBING STRINGS TO DISPLACE A FLUID RECOVERY COMPRISED OF THE INPUT GAS AND FORMATION FLUIDS THROUGH THE OTHER TUBING STRING; MAINTAINING THE FLUID RECOVERY IN A CLOSED SYSTEM TO PREVENT THE ESCAPE OF ANY CONSTITUENTS FROM THE FLUID RECOVERY; TAKING THE FLUID RECOVERY FROM THE CLOSED SYSTEM AT THE EARTH''S SURFACE AND SEPARATING THE GAS AND LIQUID CONSTITUENTS FROM THE FLUID RECOVERY; AND MEASURING THE SEPARATED GAS AT THE EARTH''S SURFACE WHEREBY THE DIFFERENCE BETWEEN THE SEPARATED GAS AND THE INPUT GAS IS DETERMINATIVE OF NET FORMATION GAS IN THE FLUID RECOVERY.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |