Method of gravity assisted microbiologically enhanced oil recovery by improving the distribution of nutrients introduced into oil producing rock formations
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United States of America Patent
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Jan 16, 2018
Issued Date -
N/A
app pub date -
Jun 17, 2014
filing date -
Jun 18, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method of improving oil recovery includes the step of selecting an oil containing rock formation having geologic structures and well completions with vertical permeability that allow a structurally high water injection point. Through a series of analyzes a nutrient water mixture is determined and injected at the injection point to stimulate resident microorganisms through gravity dispersion of nutrient materials. A period of limitation is allowed to permit changes in the size or hydrophobic properties of the microorganisms. Through interaction with the stimulated resident microorganisms, oil, trapped in a pore space, is freed to accumulate with upward gravity separation for production.
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International Classification(s)
- 2014 Application Filing Year
- C09K Class
- 2473 Applications Filed
- 1988 Patents Issued To-Date
- 80.39 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- C09K Class
- 32.37 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
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| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 16, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 16, 2029 |
