Method for mobility control in oil-bearing carbonate formations
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United States of America Patent
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Oct 7, 2014
Issued Date -
N/A
app pub date -
Dec 20, 2011
filing date -
Dec 23, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A method for enhancing recovery of oil from an oil-bearing carbonate formation within a reservoir. The method has the steps of (a) introducing a viscous gel under pressure into the oil-bearing carbonate formation and (b) extracting oil. The aqueous viscous gel has water and an amount of a non-polymeric viscosifying surfactant sufficient to provide the flooding fluid with an oil/water interfacial surface tension of about 10 mN/m or less and a viscosity of about 10 cP or more of the one or more non-polymeric surfactants. The one or more non-polymeric, viscosifying surfactants is selected from the group of one or more cationic surfactants, one or more zwitterionic surfactants, one or more anionic surfactants, one or more amphoteric surfactants, and combinations thereof. In a preferred embodiment, the aqueous viscous gel is also substantially free of solids.
First Claim
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Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| WO | A2 | WO2012088068 | Dec 20, 2011 |
International Classification(s)
- 2011 Application Filing Year
- C09K Class
- 1857 Applications Filed
- 1322 Patents Issued To-Date
- 71.20 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C09K Class
- 0 % this patent is cited more than
- 11 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 7, 2026 |
