US4552591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil field biocide composition
Assignee: Baker Hughes Holdings LLC
•
Filing: 1984-05-15
•
Granted: 1985-11-12
•
Expires: 2004-05-15
Abstract
Abstract There is provided a biocide composition for oil field fluid polymers and oil field water polymers. The composition comprises a biocide adsorbed on the surface of a solid, particulate adsorbent. The composition lessens personal and environmental contamination by spilled or splashed liquid biocides.
Inventors
- 👤 Scott W. Millar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:16
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/12; A01N43/00; A01N43/72; A01N43/80
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
54 words
A method of inhibiting bacterial growth in oil field fluids comprising adding thereto an effective bacterial inhibiting amount of a biocide consisting essentially of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one, the weight ratio of the former to the latter being from about 94 percent to about 64 percent, adsorbed on a solid, particulate adsorbent.
Claim 2
Independent Claim
54 words
A method of inhibiting bacterial growth in oil field fluids comprising adding thereto an effective bacterial inhibiting amount of a biocide consisting essentially of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one, the weight ratio of the former to the latter being from about 94 percent to about 64 percent, adsorbed on a solid, particulate adsorbent.
Claim 3
Dependent Claim
11 words
Method of claim 1 wherein said fluid is a fracturing fluid.
Claim 4
Dependent Claim
11 words
Method of claim 1 wherein said fluid is a drilling fluid.
Claim 5
Dependent Claim
12 words
Method of claim 1 wherein said fluid is a water flood system.
Claim 6
Dependent Claim
12 words
Method of claim 1 wherein said fluid is an oil field water.
References Cited (Backward Citations)
US2504404A
Cited
US3326748A
Cited
US4243403A
Cited
US3699231A
Cited
US4150026A
Cited
US4129448A
Cited
US4107300A
Cited
US4093440A
Cited
US3929561A
Cited
US4122192A
Cited
US4332799A
Cited
US4165318A
Cited
US4295932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |