Patent US772269A successfully refreshed from Google Patents.
US3603398A
Expired / Lapsed
US
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Method of placing particulate material in an earth formation with foam
Assignee: Chevron USA Inc
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Filing: 1969-07-01
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Granted: 1971-09-07
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Expires: 1989-07-01
Abstract
Abstract A method for placing material in an earth formation penetrated by a well by carrying such material down the well in a gas-liquid foam and moving said foam and material into a desired location in the earth formation.
Inventors
- 👤 Stanley O Hutchison
- 👤 John C Mckinnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:11
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/14; C; C09; C09K; C09K8/00; C09K8/50; C09K8/516; C09K8/518; E21B43/00; E21B43/02; E21B43/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A method of positioning solid particulate material in a well comprising the steps of preforming a gas and liquid foam having a gas-to-liquid volume ratio of between 3 and 50 to 1 standard cubic feet per gallon and formed from a foamable solution containing between 0.5 to 1.0 parts per weight surfactant per 100 parts liquid, placing solid particulate material for use in a formation penetrated by a well in such foam, flowing said foam containing said solid particulate material down a well and injecting said foam and said solid particulate material into a preselective formation penetrated by said well.
Claim 2
Independent Claim
100 words
A method of positioning solid particulate material in a well comprising the steps of preforming a gas and liquid foam having a gas-to-liquid volume ratio of between 3 and 50 to 1 standard cubic feet per gallon and formed from a foamable solution containing between 0.5 to 1.0 parts per weight surfactant per 100 parts liquid, placing solid particulate material for use in a formation penetrated by a well in such foam, flowing said foam containing said solid particulate material down a well and injecting said foam and said solid particulate material into a preselective formation penetrated by said well.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |