US2596137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removing deposits from wells
Assignee: Stanolind Oil and Gas Co
•
Filing: 1949-02-19
•
Granted: 1952-05-13
•
Expires: 1969-02-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence R Fast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:21
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/536; Y; Y10; Y10S; Y10S507/00; Y10S507/933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD OF ACIDIZING A FORMATION PENETRATED BY A WELL COMPRISING INTRODUCING INTO SAID WELL A MINERAL ACID AND A QUANTITY OF A WATERSOLUBLE GUM AS A BODYING AGENT FOR SAID ACID, SAID BODYING AGENT BEING IN SUFFICIENT PROPORTION TO FORM A GEL CAPABLE OF BREAKING ON PROLONGED STANDING AND HAVING A FILTRATE RATE OF LESS THAN ABOUT 100 CC. IN 30 MINUTES USING THE FILTRATION EQUIPMENT AND PROCEDURE DESCRIBED IN A. P. I. CODE NO. 29, SECOND EDITION, JULY, 1942 (TENTATIVE), POISITIONING SAID GEL IN A CONFINED ZONE ADJACENT SAID FORMATION, INCREASING THE PRESSURE OF SAID GEL UNTIL A FORMATION FRACTURE IS INDICATED BY A DECREASE IN RESISTANCE TO FLOW OF SAID GEL, CONTINUING APPLICATION OF HIGH PRESSURE TO FORCE A PORTION OF SAID GEL INTO SAID FRACTURE, MAINTAINING SAID GEL IN CONTACT WITH SAID FORMATION FOR A SUBSTANTIAL TIME AND THEREAFTER PRODUCING SAID WELL.
Claim 2
Independent Claim
146 words
A METHOD OF ACIDIZING A FORMATION PENETRATED BY A WELL COMPRISING INTRODUCING INTO SAID WELL A MINERAL ACID AND A QUANTITY OF A WATERSOLUBLE GUM AS A BODYING AGENT FOR SAID ACID, SAID BODYING AGENT BEING IN SUFFICIENT PROPORTION TO FORM A GEL CAPABLE OF BREAKING ON PROLONGED STANDING AND HAVING A FILTRATE RATE OF LESS THAN ABOUT 100 CC. IN 30 MINUTES USING THE FILTRATION EQUIPMENT AND PROCEDURE DESCRIBED IN A. P. I. CODE NO. 29, SECOND EDITION, JULY, 1942 (TENTATIVE), POISITIONING SAID GEL IN A CONFINED ZONE ADJACENT SAID FORMATION, INCREASING THE PRESSURE OF SAID GEL UNTIL A FORMATION FRACTURE IS INDICATED BY A DECREASE IN RESISTANCE TO FLOW OF SAID GEL, CONTINUING APPLICATION OF HIGH PRESSURE TO FORCE A PORTION OF SAID GEL INTO SAID FRACTURE, MAINTAINING SAID GEL IN CONTACT WITH SAID FORMATION FOR A SUBSTANTIAL TIME AND THEREAFTER PRODUCING SAID WELL.
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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 |