US3207218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of foam for plugging gas producing strata
Assignee: Pure Oil Co
•
Filing: 1961-12-19
•
Granted: 1965-09-21
•
Expires: 1981-12-19
Abstract
No abstract record available.
Inventors
- 👤 Orrin C Holbrook
- 👤 George G Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:15
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/92; C09K8/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
THE METHOD OF TREATING A SUBTERRANEAN FORMATION PENETRATED BY A WELL WHICH PRODUCES A LIQUID AND A GAS TO DECREASE THE RATE OF GAS PRODUCTION WITHOUT SUBSTANTIALLY DECREASING THE RATE OF LIQUID PRODUCTION, COMPRISING TERMINATING PRODUCTION OF FLUIDS FROM SAID WELL, INJECTING THROUGH SAID WELL AND INTO SAID FORMATION A SOLUTION OF A HIGH-FORMING SURFACTANT IN A LIQUID MISCIBLE WITH THE LIQUID PRODUCED FROM SAID WELL, SAID SOLUTION BEING INJECTED IN A QUANTITY SUFFICIENT TO PENETRATE THE FORMATION A RADIAL DISTANCE OF ABOUT 1 TO 10 FEET, SAID SURFACTANT BEING PRESENT IN SUFFICIENT QUANTITY TO FORM A STABLE FOAM WHEN SAID SOLUTION IS CONTACTED BY SAID GAS, PERMITTING SAID GAS TO CONTACT SAID SOLUTION TO GENERATION A FOAM SUBSTANTIALLY ONLY IN THE PORTION OF SAID FORMATION PRODUCING SAID GAS AND SUBSEQUENTLY RESUMING PRODUCTION OF FLUIDS FROM SAID WELL.
Claim 2
Independent Claim
138 words
THE METHOD OF TREATING A SUBTERRANEAN FORMATION PENETRATED BY A WELL WHICH PRODUCES A LIQUID AND A GAS TO DECREASE THE RATE OF GAS PRODUCTION WITHOUT SUBSTANTIALLY DECREASING THE RATE OF LIQUID PRODUCTION, COMPRISING TERMINATING PRODUCTION OF FLUIDS FROM SAID WELL, INJECTING THROUGH SAID WELL AND INTO SAID FORMATION A SOLUTION OF A HIGH-FORMING SURFACTANT IN A LIQUID MISCIBLE WITH THE LIQUID PRODUCED FROM SAID WELL, SAID SOLUTION BEING INJECTED IN A QUANTITY SUFFICIENT TO PENETRATE THE FORMATION A RADIAL DISTANCE OF ABOUT 1 TO 10 FEET, SAID SURFACTANT BEING PRESENT IN SUFFICIENT QUANTITY TO FORM A STABLE FOAM WHEN SAID SOLUTION IS CONTACTED BY SAID GAS, PERMITTING SAID GAS TO CONTACT SAID SOLUTION TO GENERATION A FOAM SUBSTANTIALLY ONLY IN THE PORTION OF SAID FORMATION PRODUCING SAID GAS AND SUBSEQUENTLY RESUMING PRODUCTION OF FLUIDS FROM SAID WELL.
References Cited (Backward Citations)
US2127662A
Cited
US2713906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |