US3592267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of consolidating an unconsolidated sand
Assignee: Shell USA Inc
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Filing: 1969-06-27
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Granted: 1971-07-13
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Expires: 1989-06-27
Abstract
Abstract A method of consolidating an unconsolidated sand disposed in an incompetent formation by treating the formation with an emulsion of an aqueous solution of an alkali metal silicate in a hydrocarbon liquid and an aqueous solution containing a silicate precipitator.
Inventors
- 👤 Morgan Ashley Stainback
- 👤 Evan Hoskins Street Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:28
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/56; C09K8/57; C09K8/572
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
41 words
The method of claim 1 wherein the step of injecting an emulsion into said formation includes the step of injection a water-in-oil emulsion containing an aqueous solution of sodium polysilicate as the suspended phase and an oil as the continuous phase.
Claim 2
Dependent Claim
32 words
The method of claim 2 wherein the step of injecting an emulsion containing an oil as the continuous phase into said formation includes the step of injecting kerosene as the continuous phase.
Claim 3
Dependent Claim
30 words
The method of claim 1 wherein the step of injecting a liquid hydrocarbon into said formation includes the step of injecting a relatively small amount of kerosene into said formation.
Claim 4
Dependent Claim
35 words
The method of claim 1 wherein the step of injecting an aqueous solution of an alkaline earth metal salt into said formation includes the step of injecting an aqueous calcium chloride solution into said formation.
Claim 5
Dependent Claim
63 words
The method of claim 1 wherein: the step of injecting an emulsion into said formation includes the step of injecting a 7:3 emulsion formed of kerosene-sodium polysilicate using a 0.5 percent water-soluble surfactant; and the step of injecting an aqueous solution of an alkaline earth metal salt into said formation includes the step of injecting a 20 weight percent aqueous calcium chloride solution.
Claim 6
Independent Claim
104 words
A method of consolidating a porous unconsolidated preferentially water-wet sand disposed in an incompetent formation to form a permeable consolidated medium which method comprises the steps of: thinly coating the sand with an aqueous solution containing an alkali metal silicate by injecting into the formation an emulsion comprising the aqueous solution containing an alkali metal silicate dispersed in a liquid hydrocarbon; and thereafter, injecting into the formation an aqueous solution containing a silicate precipitator whereby the silicate precipitator reacts with the alkali metal silicate to precipitate a thin coat of siliceous material on the sand to consolidate the sand into a permeable consolidated medium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |