US4049559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for secondary and tertiary oil recovery
Assignee: Merck and Co Inc
•
Filing: 1976-05-18
•
Granted: 1977-09-20
•
Expires: 1996-05-18
Abstract
Abstract An antimicrobial composition for secondary and tertiary oil recovery comprising a flooding composition consisting of displacement and driving fluids having incorporated therein an antimicrobially effective amount of a di-bicyclo[3.1.1] or [2.2.1] heptyl or di-bicyclo[3.1.1] and [2.2.1] heptenyl polyamines or salts thereof.
Inventors
- 👤 Nathaniel Grier
- 👤 Richard A. Dybas
- 👤 Robert A. Strelitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:09
CPC Classifications
A; A01; A01N; A01N33/00; A01N33/02; A01N33/04; A01N33/08; C; C09; C09K; C09K8/00; C09K8/54; Y; Y10; Y10S; Y10S507/00; Y10S507/92; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
55 words
A premix for incorporation into displacing and driving fluids used for injection into oil-bearing strata during oil production subsequent to primary recovery which comprises at least 0.0005% by weight of 1-[1,5-di-(3,3-dimethylnorborn-2-yl)-3-pentyl]-1,5,9-triazanonane, and acid addition salts thereof, at least .05% by weight of a hydrocarbon solvent soluble surfactant, and a hydrocarbon solvent, fluid at ambient temperature.
Claim 2
Dependent Claim
55 words
A premix for incorporation into displacing and driving fluids used for injection into oil-bearing strata during oil production subsequent to primary recovery which comprises at least 0.0005% by weight of 1-[1,5-di-(3,3-dimethylnorborn-2-yl)-3-pentyl]-1,5,9-triazanonane, and acid addition salts thereof, at least .05% by weight of a hydrocarbon solvent soluble surfactant, and a hydrocarbon solvent, fluid at ambient temperature.
Claim 3
Dependent Claim
14 words
A premix according to claim 1 where said surfactant is a crude oil sulfonate.
Claim 4
Dependent Claim
45 words
A premix according to claim 1 where said surfactant is a polyether derived from the reaction product of a hydroxylated non-heterocyclic aromatic hydrocarbon having from 6 to 14 carbon atoms and at least one hydroxy substituent and a C 2 to C 4 epoxy compound.
Claim 5
Dependent Claim
12 words
A premix according to claim 3 where said surfactant is polyethoxylated phenol.
References Cited (Backward Citations)
US2867299A
Cited
GB860860A
Cited
US3049492A
Cited
US3197510A
Cited
US3467705A
Cited
US3483254A
Cited
GB1305502A
Cited
US3900565A
Cited
US3885626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |