Compositions and methods for completing subterranean wells
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United States of America Patent
Stats
-
Aug 17, 2021
Grant Date -
Jan 11, 2018
app pub date -
Jan 7, 2016
filing date -
Jan 21, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Well treatment compositions comprise water, a lipophilic anionic surfactant, a hydrophilic non-ionic surfactant, a second non-ionic surfactant, a water-solubilizing solvent, a water-immiscible solvent and a lipophilic non-ionic surfactant. Optionally, a second solvent may be incorporated. When added to spacer fluids, chemical washes or both, the compositions promote the removal of non-aqueous drilling fluids from casing surfaces. Additionally, the treated casing surfaces are water wet, thereby promoting optimal bonding to cement.
First Claim
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International Classification(s)
- 2016 Application Filing Year
- C09K Class
- 3076 Applications Filed
- 2094 Patents Issued To-Date
- 68.08 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- C09K Class
- 64.19 % this patent is cited more than
- 4 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Feb 17, 2025 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 17, 2029 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 17, 2033 |
