US3862044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary recovery composition comprising water, hydrocarbon solvent and colloidal silica
Assignee: Texaco Inc
•
Filing: 1973-07-13
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Granted: 1975-01-21
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Expires: 1993-07-13
Abstract
Abstract A method of secondary recovery of hydrocarbons which involves injecting a fluid into an injection well and producing hydrocarbons from a production well involves the use of a novel thickened injection fluid. The fluid comprises an intimate mixture of water, hydrocarbon solvent and colloidal silica. The fluid is miscible with hydrocarbons in the reservoir and aqueous fluids and provides a decreased mobility ratio to enhance sweep efficiency.
Inventors
- 👤 Charles A Christopher
- 👤 Joseph C Allen
- 👤 Jack H Kolaian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:45
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; E; E21; E21B; E21B43/00; E21B43/16; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
A fluid as in claim 1 made by mixing one sixth of the total hexane with the colloidal silica until a soft gel forms, adding the glycerine, the nonionic surfactant and about 91 percent of the water and mixing until a firm gel forms, and adding the remainder of the hexane and water until a liquid forms.
References Cited (Backward Citations)
US2920041A
Cited
US3208515A
Cited
US3377275A
Cited
US3368620A
Cited
US3446282A
Cited
US3412792A
Cited
US3515216A
Cited
US3493051A
Cited
US3610339A
Cited
US3691072A
Cited
US3753904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |