US2776010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing porous earth stratum
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-12-29
•
Granted: 1957-01-01
•
Expires: 1974-12-29
Abstract
No abstract record available.
Inventors
- 👤 James L Rike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:39
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/502
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A METHOD FOR WORKING OVER A WELL BORE PENTRATING A PLURALITY OF POROUS HYDROCARBON STRATA WHEREIN A CASING IS SET ABOVE THE UPPERMOST OF SAID POROUS STRATA COMPRISING SETING A TUBING STRING IN SAID CASING THE LOWER END OF WHIH IS POSITIONED ABOVE THE UPPERMOST OF SAID HYDROCARBON STRATA, SHOOTING SAID WELL BELOW THE LOWER ENDS OF SAID CASING AND SAID TUBING WITH AN EXPLOSIVE CHARGE THEREBY FORMING A CAVITY IN SAID WELL, INTRODUCING INTO SAID CAVITY A LOW FLUID LOSS CEMENT SLURRY HAVING A DENSITY RANGE OF 9 TO 13.5 POUNDS PER GALLON, IMPOSING A LOW SQUEEZE PRESSURE ON SAID SLURRY SUFFICIENT TO FORM A THIN FILTER CAKE OF CEMENTITIOUS MATERIAL ON SAID STRATA IN SAID CAVITY, CIRCULATING OUT EXCESS FLUID CEMENT, PERFORATING A SELECTED POROUS STRATUM IN SAID CAVITY AND THEN FLOWING FLUIDS THROUGH THE PERFORATIONS FORMED IN SAID SELECTED STRATUM.
Claim 2
Independent Claim
143 words
A METHOD FOR WORKING OVER A WELL BORE PENTRATING A PLURALITY OF POROUS HYDROCARBON STRATA WHEREIN A CASING IS SET ABOVE THE UPPERMOST OF SAID POROUS STRATA COMPRISING SETING A TUBING STRING IN SAID CASING THE LOWER END OF WHIH IS POSITIONED ABOVE THE UPPERMOST OF SAID HYDROCARBON STRATA, SHOOTING SAID WELL BELOW THE LOWER ENDS OF SAID CASING AND SAID TUBING WITH AN EXPLOSIVE CHARGE THEREBY FORMING A CAVITY IN SAID WELL, INTRODUCING INTO SAID CAVITY A LOW FLUID LOSS CEMENT SLURRY HAVING A DENSITY RANGE OF 9 TO 13.5 POUNDS PER GALLON, IMPOSING A LOW SQUEEZE PRESSURE ON SAID SLURRY SUFFICIENT TO FORM A THIN FILTER CAKE OF CEMENTITIOUS MATERIAL ON SAID STRATA IN SAID CAVITY, CIRCULATING OUT EXCESS FLUID CEMENT, PERFORATING A SELECTED POROUS STRATUM IN SAID CAVITY AND THEN FLOWING FLUIDS THROUGH THE PERFORATIONS FORMED IN SAID SELECTED STRATUM.
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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |