Patent US2454392A successfully refreshed from Google Patents.
US2596845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of wells
Assignee: Stanolind Oil and Gas Co
•
Filing: 1948-05-28
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Granted: 1952-05-13
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Expires: 1968-05-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:47
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A METHOD OF DETERMING THE FLUID PRODUCITIVITY OF A FORMATION IN A WELL TO BE TESTED STEPS OF ISOLATING A SECTION OF THE WELL TO BE TESTED FROM OTHER PORTIONS OF SAID WELL, DISPOSING A GELLED OILY LIQUID IN SAID SECTION, SUBJECTING SAID LIQUID TO A PRESSURE EQUAL TO THE FORMATION BREAKDOWN PRESSURE TO PRODUCE A FRACTURE IN SAID SECTION AND FORCE SAID LIQUID THEREINTO, REDUCING THE VISCOSITY OF SAID LIQUID IN SAID FRACTURE BY CONTACTING SAID LIQUID WITH A GEL BREAKER THEREFOR FOR A PROLONGED PERIOD OF TIME, DECREASING THE HYDROSTATIC HEAD ON SAID SECTION TO PRODUCE WELL FLUIDS FROM SAID ISOLATED SECTION TO THE EXCLUSION OF WELL FLUIDS FROM OTHER PORTIONS OF SAID WELL, AND DETERMINING A CHARACTERISTIC OF THE PRODUCED WELL FLUIDS, SAID SECTION AT ALL TIMES MAINTAINED ISOLATED FROM SAID OTHER PORTIONS OF SAID WELL.
Claim 2
Independent Claim
139 words
A METHOD OF DETERMING THE FLUID PRODUCITIVITY OF A FORMATION IN A WELL TO BE TESTED STEPS OF ISOLATING A SECTION OF THE WELL TO BE TESTED FROM OTHER PORTIONS OF SAID WELL, DISPOSING A GELLED OILY LIQUID IN SAID SECTION, SUBJECTING SAID LIQUID TO A PRESSURE EQUAL TO THE FORMATION BREAKDOWN PRESSURE TO PRODUCE A FRACTURE IN SAID SECTION AND FORCE SAID LIQUID THEREINTO, REDUCING THE VISCOSITY OF SAID LIQUID IN SAID FRACTURE BY CONTACTING SAID LIQUID WITH A GEL BREAKER THEREFOR FOR A PROLONGED PERIOD OF TIME, DECREASING THE HYDROSTATIC HEAD ON SAID SECTION TO PRODUCE WELL FLUIDS FROM SAID ISOLATED SECTION TO THE EXCLUSION OF WELL FLUIDS FROM OTHER PORTIONS OF SAID WELL, AND DETERMINING A CHARACTERISTIC OF THE PRODUCED WELL FLUIDS, SAID SECTION AT ALL TIMES MAINTAINED ISOLATED FROM SAID OTHER PORTIONS OF SAID WELL.
References Cited (Backward Citations)
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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) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |