US3343602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of retarding reaction of acid on limestone
Assignee: Halliburton Co
•
Filing: 1965-10-23
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Granted: 1967-09-26
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 John A Knox
- 👤 Walter R Dill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:43
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/02; C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/72; C09K8/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METHOD OF CHEMICALLY RETARDING THE REACTION TIME OF ACID SOLUTIONS ON CALCAREOUS FORMATIONS, COMPRISING THE STEPS OF CONTACTING THE CALCAREOUS FORMATION TO BE ACIDIZED WITH AN OILY FLUID COMPRISING AN OIL AND AN OIL FILM-FORMING AGENT IN AN AMOUNT EFFECTIVE TO PROVIDE A TENACIOUS OILY FILM ON THE CALCAREOUS FORMATION WHEREBY THE REACTION TIME OF ACID ON THE CALCAREOUS FORMATION IS SUBSTANTIALLY INCREASED, AND THEREAFTER CONTACTING THE CALCAREOUS FORMATION WITH AN AQUEOUS ACIDIZING FLUID.
Claim 2
Independent Claim
75 words
A METHOD OF CHEMICALLY RETARDING THE REACTION TIME OF ACID SOLUTIONS ON CALCAREOUS FORMATIONS, COMPRISING THE STEPS OF CONTACTING THE CALCAREOUS FORMATION TO BE ACIDIZED WITH AN OILY FLUID COMPRISING AN OIL AND AN OIL FILM-FORMING AGENT IN AN AMOUNT EFFECTIVE TO PROVIDE A TENACIOUS OILY FILM ON THE CALCAREOUS FORMATION WHEREBY THE REACTION TIME OF ACID ON THE CALCAREOUS FORMATION IS SUBSTANTIALLY INCREASED, AND THEREAFTER CONTACTING THE CALCAREOUS FORMATION WITH AN AQUEOUS ACIDIZING FLUID.
References Cited (Backward Citations)
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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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |