Patent US3285340A successfully refreshed from Google Patents.
US3285340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acidizing propped fractures
Assignee: Gulf Research and Development Co
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Filing: 1963-07-19
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Granted: 1966-11-15
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Expires: 1983-07-19
Abstract
No abstract record available.
Inventors
- 👤 Jimmie L Huitt
- 👤 Papaila John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:19
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/267; C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A METHOD OF INCREASING THE PRODUCTIVE CAPACITY OF A SUBTERRANEAN FORMATION PENETRATED BY A WELL, SAID FORMATION BEING SUSCEPTIBLE TO DISSOLUTION BY ACID, COMPRISING ING DISPLACING A LIQUID DOWN THE WELL INTO CONTACT WITH THE FORMATION, SAID LIQUID CONTAINING POROUS DEFORMABLE PROPPING PARTICLES IMPREGNATED WITH A SURFACTANT CAPABLE OF RENDERING THE FORMATION RESISTANT TO ACID, INCREASING PRESSURE ON THE LIQUID TO CREATE AND EXTEND A FRACTURE FROM THE WELL INTO THE FORMATION, DISPLACING THE LIQUID AND PROPPING PARTICLES INTO THE FRACTURE, REDUCING THE PRESSURE ON THE LIQUID WHEREBY THE FRACTURE TENDS TO COMPRESS THE PROPPING PARTICLES AND SQUEEZE THE SURFACTANT FROM THE PARTICLES ONTO THE FORMATION SURFACES ADJACEMT THE PARTICLES, THUS RENDERING THE SURFACTANT-TREATED SURFACES RESISTANT TO ACID, AND THEREAFTER DISPLACING ACID DOWN THE WELL AND INTO THE FRACTURE.
Claim 2
Independent Claim
129 words
A METHOD OF INCREASING THE PRODUCTIVE CAPACITY OF A SUBTERRANEAN FORMATION PENETRATED BY A WELL, SAID FORMATION BEING SUSCEPTIBLE TO DISSOLUTION BY ACID, COMPRISING ING DISPLACING A LIQUID DOWN THE WELL INTO CONTACT WITH THE FORMATION, SAID LIQUID CONTAINING POROUS DEFORMABLE PROPPING PARTICLES IMPREGNATED WITH A SURFACTANT CAPABLE OF RENDERING THE FORMATION RESISTANT TO ACID, INCREASING PRESSURE ON THE LIQUID TO CREATE AND EXTEND A FRACTURE FROM THE WELL INTO THE FORMATION, DISPLACING THE LIQUID AND PROPPING PARTICLES INTO THE FRACTURE, REDUCING THE PRESSURE ON THE LIQUID WHEREBY THE FRACTURE TENDS TO COMPRESS THE PROPPING PARTICLES AND SQUEEZE THE SURFACTANT FROM THE PARTICLES ONTO THE FORMATION SURFACES ADJACEMT THE PARTICLES, THUS RENDERING THE SURFACTANT-TREATED SURFACES RESISTANT TO ACID, AND THEREAFTER DISPLACING ACID DOWN THE WELL AND INTO THE FRACTURE.
References Cited (Backward Citations)
US3179170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |