Patent US2906338A successfully refreshed from Google Patents.
US2906338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well treatment
Assignee: Texaco Inc
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Filing: 1957-11-27
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Granted: 1959-09-29
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Expires: 1977-11-27
Abstract
No abstract record available.
Inventors
- 👤 Austen M Shook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:28
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
231 words
A METHOD OF TREATING A WELL IN WHICH A WELL SCREEN IS DISPOSED IN THE WELL BORE OPPOSITE THE PETROLEUM PRODUCING FORMATION TO PROVIDE AN ANNULUS BETWEEN SAID WELL SCREEN AND SAID FORMATION, THE INTERIOR OF SAID SCREEN BEING IN FLUID COMMUNICATION WITH SAID ANNULUS, SAID WELL SCREEN BEING ATTACHED AT THE UPPER END THEREOF TO A TUBING WITHIN SAID WELL BORE, SAID TUBING BEING PROVIDED THEREIN WITH A CLOSURE AT ABOUT THE POSITION WHERE SAID WELL SCREEN IS ATTACHED TO SAID TUBING EFFECTIVE TO PREVENT DIRECT FLUID COMMUNICATION BETWEEN THE INTERIOR OF SAID TUBING AND THE INTERIOR OF SAID WELL SCREEN, WHICH COMPRISES INTRODUCING INTO SAID ANNULUS A MIXTURE OF GRANULAR MATERIAL AND A LIQUID IN AN AMOUNT AT LEAST SUFFICIENT TO OCCUPY SAID ANNULUS, DIRECTING FLUID UNDERPRESSURE TO THE MIXTURE IN THE ANNULUS AND TO THE INTERIOR OF THE SCREEN SO AS TO EXERT A PRESSURE ON SAID LIQUID WITHIN SAID ANNULUS SUFFICIENT TO FORCE SOME OF SAID MIXTURE COMPRISING LIQUID AND GRANULAR MATERIAL INTO SAID FORMATION WHILE AT THE SAME TIME MAINTAINING SUBSTANTIALLY THE SAME FLUID PRESSURE WITHIN THE ANNULUS DURING THE AFORESAID PRESSURING OPERATION, LEAVING WITHIN SAID ANNULUS GRANULAR MATERIAL TO FORM A FILTER PACK BETWEEN SAID FORMATION AND SAID SCREEN AND REMOVING SAID CLOSURE BETWEEN SAID SCREEN AND SAID TUBING SO AS TO PROVIDE DIRECT FLUID COMMUNICATION BETWEEN THE INTERIOR OF SAID SCREEN AND SAID TUBING.
Claim 2
Independent Claim
231 words
A METHOD OF TREATING A WELL IN WHICH A WELL SCREEN IS DISPOSED IN THE WELL BORE OPPOSITE THE PETROLEUM PRODUCING FORMATION TO PROVIDE AN ANNULUS BETWEEN SAID WELL SCREEN AND SAID FORMATION, THE INTERIOR OF SAID SCREEN BEING IN FLUID COMMUNICATION WITH SAID ANNULUS, SAID WELL SCREEN BEING ATTACHED AT THE UPPER END THEREOF TO A TUBING WITHIN SAID WELL BORE, SAID TUBING BEING PROVIDED THEREIN WITH A CLOSURE AT ABOUT THE POSITION WHERE SAID WELL SCREEN IS ATTACHED TO SAID TUBING EFFECTIVE TO PREVENT DIRECT FLUID COMMUNICATION BETWEEN THE INTERIOR OF SAID TUBING AND THE INTERIOR OF SAID WELL SCREEN, WHICH COMPRISES INTRODUCING INTO SAID ANNULUS A MIXTURE OF GRANULAR MATERIAL AND A LIQUID IN AN AMOUNT AT LEAST SUFFICIENT TO OCCUPY SAID ANNULUS, DIRECTING FLUID UNDERPRESSURE TO THE MIXTURE IN THE ANNULUS AND TO THE INTERIOR OF THE SCREEN SO AS TO EXERT A PRESSURE ON SAID LIQUID WITHIN SAID ANNULUS SUFFICIENT TO FORCE SOME OF SAID MIXTURE COMPRISING LIQUID AND GRANULAR MATERIAL INTO SAID FORMATION WHILE AT THE SAME TIME MAINTAINING SUBSTANTIALLY THE SAME FLUID PRESSURE WITHIN THE ANNULUS DURING THE AFORESAID PRESSURING OPERATION, LEAVING WITHIN SAID ANNULUS GRANULAR MATERIAL TO FORM A FILTER PACK BETWEEN SAID FORMATION AND SAID SCREEN AND REMOVING SAID CLOSURE BETWEEN SAID SCREEN AND SAID TUBING SO AS TO PROVIDE DIRECT FLUID COMMUNICATION BETWEEN THE INTERIOR OF SAID SCREEN AND SAID TUBING.
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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |