US2867279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and compositions for treating geological formations
Assignee: ChampionX LLC
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Filing: 1957-03-18
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Granted: 1959-01-06
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Expires: 1977-03-18
Abstract
No abstract record available.
Inventors
- 👤 Thomas G Cocks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:46
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; Y; Y10; Y10S; Y10S507/00; Y10S507/92; Y10S507/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PROCESS OF IMPROVING THE CHARACTERISTICS OF GEOLOGICAL FORMATIONS WHICH COMPRISES CONTACTING SAID FORMATIONS WITH WATER HAVING DISSOLVED THEREIN A HYDROXY SUBSTITUTED CARBOXYLIC ACID AND A BACTERICIDALLY ACTIVE BASIC ORGANIC NITROGEN COMPOUND HAVING AT LEAST ONE ALIPHATIC GROUP OF AT LEAST 8 CARBON ATOMS IN CHAIN LENGTH, SAID HYDROXY SUBSTITUTED CARBOXYLIC ACID BEING SOLUBLE IN WATER AT 20* C. AS ITS CALCIUM SALT TO THE EXTENT OF AT LEAST 500 PARTS PER MILLION AND HAVING A DISSOCIATION CONSTANT (K1) OF FROM 2X10-3 TO 1X10-5, AND THE AMOUNT OF SAID ACID BEING SUFFICIENT TO ADJUST THE PH OF SAID WATER TO A RANGE EQUAL TO OR LESS THAN THAT OF THE CONNATE WATER PRESENT IN SAID FORMATION, WITH THE WEIGHT RATIO OF ACID TO BASIC ORGANIC NITROGEN COMPOUND BEING WITHIN THE RANGE OF FROM 25:1 TO 1:3.
Claim 2
Dependent Claim
136 words
A PROCESS OF IMPROVING THE CHARACTERISTICS OF GEOLOGICAL FORMATIONS WHICH COMPRISES CONTACTING SAID FORMATIONS WITH WATER HAVING DISSOLVED THEREIN A HYDROXY SUBSTITUTED CARBOXYLIC ACID AND A BACTERICIDALLY ACTIVE BASIC ORGANIC NITROGEN COMPOUND HAVING AT LEAST ONE ALIPHATIC GROUP OF AT LEAST 8 CARBON ATOMS IN CHAIN LENGTH, SAID HYDROXY SUBSTITUTED CARBOXYLIC ACID BEING SOLUBLE IN WATER AT 20* C. AS ITS CALCIUM SALT TO THE EXTENT OF AT LEAST 500 PARTS PER MILLION AND HAVING A DISSOCIATION CONSTANT (K1) OF FROM 2X10-3 TO 1X10-5, AND THE AMOUNT OF SAID ACID BEING SUFFICIENT TO ADJUST THE PH OF SAID WATER TO A RANGE EQUAL TO OR LESS THAN THAT OF THE CONNATE WATER PRESENT IN SAID FORMATION, WITH THE WEIGHT RATIO OF ACID TO BASIC ORGANIC NITROGEN COMPOUND BEING WITHIN THE RANGE OF FROM 25:1 TO 1:3.
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) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |