Fatty alcohols and esters for crude oil treatment
Compounds are provided that can be used in methods for reducing paraffin or wax deposition in crude oil during processing, storage, or transportation. More specifically, the method comprises contacting the crude oil with a composition in an amount effective to reduce paraffin or was deposition.
1. A method for reducing paraffin or wax deposition in crude oil during processing, storage, or transportation, the method comprises contacting the crude oil with a paraffin or wax deposition-inhibiting composition in an amount effective to reduce paraffin or wax deposition, wherein the paraffin or wax deposition-inhibiting composition consists of a compound of Formula (I):
wherein
R 1 is hydrogen or —C(O)R 4 ;
R 2 is hydrogen or alkyl;
R 3 is C 8 to C 60 alkyl or C 8 to C 60 alkenyl; and
R 4 is alkyl;
whereby the paraffin or wax deposition in crude oil is reduced.
2. The method of claim 1 , wherein the paraffin or wax deposition is reduced by suspension of the paraffin or wax in the crude oil.
3. The method of claim 2 , wherein R 1 is hydrogen.
4. The method of claim 2 , wherein R 1 is —C(O)R 4 and R 4 is C 1 to C 8 alkyl.
5. The method of claim 4 , wherein R 1 is acetyl.
6. The method of claim 2 , wherein R 2 is hydrogen.
7. The method of claim 2 , wherein R 2 is methyl or ethyl.
8. The method of claim 2 , wherein R 3 is C 8 to C 24 alkyl or C 8 to C 24 alkenyl.
9. The method of claim 8 , wherein R 3 is octyl, nonyl, decyl, undecyl, dodecyl, tetradecyl, hexadecyl, octadecyl, icosyl, docosyl, tetracosyl, or hexacosyl.
10. The method of claim 2 , wherein the compound of Formula I comprises 1-decanol, 1-undecanol, 1-dodecanol, 1-tetradecanol, 1-hexadecanol, 1-octadecanol, 2-undecanol, 2-dodecanol, 3-dodecanol, 2-heptadecanol, 3-octadecanol, decyl acetate, undecyl acetate, dodecyl acetate, tetradecyl acetate, hexadecyl acetate, ocetadecyl acetate, undecan-2-yl acetate, dodecan-3-yl acetate, heptadecan-2-yl acetate, octadecan-3-yl acetate, or a combination thereof.
11. The method of claim 10 , wherein the compound of Formula I comprises dodecyl acetate, 1-dodecanol, or a combination thereof.
12. The method of claim 2 , wherein R 1 is —C(O)R 4 ; R 2 is hydrogen; R 3 is C 12 to C 616 alkyl; and R 4 is methyl.
13. The method of claim 10 , wherein the compound of Formula I comprises dodecyl acetate.
14. The method of claim 10 , wherein the compound of Formula I comprises 1-dodecanol.
15. The method of claim 1 , wherein compound of Formula I is a liquid at moderate ambient temperatures.
16. The method of claim 15 , wherein the moderate ambient temperatures is from about 20° C. to about 43° C.
17. The method of claim 1 , wherein the crude oil has a wax appearance temperature of about 20° C. to about 50° C.
18. The method of claim 1 , wherein the composition is contacted to crude oil at a concentration from about 1 ppm to about 10,000 ppm based on the total weight of the crude oil.
19. The method of claim 18 , wherein the composition is contacted to crude oil at a concentration from about 100 ppm to about 5,000 ppm.
20. The method of claim 19 , wherein the composition is contacted to crude oil at a concentration from about 200 ppm to about 1,000 ppm.