Well servicing fluid comprising an organic salt being the product of an organic acid and an organic amine base and method of servicing a well with the fluid
View Patent ↗A well servicing fluid is disclosed. The well servicing fluid is formulated with components comprising: an organic salt, the organic salt being the product of an organic acid and an organic amine base; and an aqueous based solvent. A method of servicing a well is also disclosed.
1. A well servicing fluid comprising:
an organic salt, the organic salt being the product of an organic acid and an organic amine base; and
an aqueous based solvent, the organic salt and the aqueous based solvent forming an organic salt solution.
2. The fluid of claim 1 , wherein aqueous based solvent is chosen from fresh water, brine, seawater and produced water.
3. The fluid of claim 2 , wherein the aqueous based solvent is a brine comprising a concentration of inorganic salt of 0.5% by weight or more, based on the total weight of the brine.
4. The fluid of claim 1 , wherein the concentration of organic salt is about 10% by weight or more, based on the total weight of the well servicing fluid.
5. The fluid of claim 4 , further comprising an inorganic salt in a concentration of about 10% by weight or more, based on the total weight of the well servicing fluid.
6. The fluid of claim 1 , wherein the organic amine base is chosen from the compounds of formula 2:
R 3 R 4 R 5 N (2)
where R 3 , R 4 and R 5 are chosen from hydrogen atoms, hydroxyl groups, and substituted or unsubstituted aliphatic groups, with the proviso that at least one of R 3 , R 4 and R 5 is an aliphatic group comprising from 1 to 40 carbons.
7. The fluid of claim 6 , wherein the at least one aliphatic group is chosen from alkyl groups, alkenyl groups, alkyl hydroxyl groups, —R 6 OR 7 groups, —R 6 CHO groups, and —R 6 COR 7 groups, where R 6 and R 7 are independently chosen from aliphatic groups.
8. The fluid of claim 6 , wherein R 3 , R 4 and R 5 are all C 1 to C 20 aliphatic groups.
9. The fluid of claim 6 , wherein the amine base is a polyamine and the at least one aliphatic group is chosen from primary, secondary or tertiary aliphatic amine groups.
10. The fluid of claim 1 , wherein the amine is chosen from dimethylamine; diethylamine; trimethylamine; triethylamine; N-Coco-N,N-dimethyl amine; Bis-(2-dimethylaminoethyl)ether; polyoxyalkylenediamines; ethoxylated tallow alkyl amines; (C 2 H 5 ) 2 NOH; (HOC 2 H 4 ) 2 NCH 3 and N(C 2 H 4 OH) 3 .
11. The fluid of claim 10 , wherein the amine is chosen from N,N′N′-polyoxyethylene(15)-N-tallowalkyl-1,3-diaminopropane, polyoxypropylenediamine and N,N′-bis(2-propyl)polyoxypropylenediamine.
12. The fluid of claim 1 , wherein the organic acid is chosen from oxoacids of carbon, oxoacids of sulfur and oxoacids of phosphorus.
13. The fluid of claim 1 , wherein the organic acid is chosen from the compounds of formula 1:
R 1 X y (1)
wherein:
R 1 is chosen from substituted or unsubstituted aliphatic groups and substituted or unsubstituted aromatic groups;
X is chosen from —C(═O)OH, —OS(═O) 2 OH, —S(═O) 2 OH, —OP(═O)(OR 2 )OH, —P(═O)(OR 2 )OH, and —P(═O)OHR 2 , where R 2 is chosen from hydrogen atoms, substituted or unsubstituted aliphatic groups and substituted or unsubstituted aromatic groups; and
y is 1 to 4.
14. The fluid of claim 1 , wherein the organic acid is chosen from carboxylic acids, sulfonic acids, sulfuric acids, phosphoric acids, phosphonic acids, and phosphinic acids.
15. The fluid of claim 1 , wherein the organic acid is chosen from propionic acid, acetic acid, propanedioic acid, ethanedioic, succinic acid, maleic acid and dodecylbenzenesulfonic acid.
16. The fluid of claim 1 , wherein the amine is chosen from R 8 R 9 NH, where R 8 and R 9 are independently chosen from C 1 to C 6 alkyls; R 10 NR 11 2 and R 10 2 NR 11 , where R 10 is a fatty acid and R 11 is chosen from a hydrogen atom, alkyl groups and polyoxyalkylene groups; R 8 2 NOH, (HOR 9 ) 2 NR 8 and N(R 9 OH) 3 , where R 8 and R 9 are independently chosen from C 1 to C 6 hydrocarbon moieties; polyamines with the general formula R 12 R 13 NR 14 NR 15 R 16 , where R 14 is chosen from substituted for unsubstituted alkyl groups, substituted or unsubstituted ether groups and substituted or unsubstituted polyether groups, and R 12 , R 13 , R 15 and R 16 are each bonded to a nitrogen atom and are independently chosen from a hydrogen atom, fatty acids, esters of fatty acids, hydroxyl alkyl groups, polyoxyalkylene groups and C 1 to C 40 alkyls.
17. The fluid of claim 1 , wherein the acid is a carboxylic acid and the base is a dialkylamine.
18. The fluid of claim 1 , wherein the fluid is formulated with at least one additional compound chosen from non-emulsifiers, viscosifying agents, surfactants, clay stabilization additives, biopolymer degradation additives, fluid loss control additives and high temperature stabilizers.
19. A method of servicing a well, the method comprising:
providing a well servicing fluid comprising:
an organic salt, the organic salt being the product of an organic acid and an organic amine base; and
an aqueous based solvent, the organic salt and the aqueous based solvent forming an organic salt solution; and
introducing the well servicing fluid into a well.
20. The method of claim 19 , wherein the concentration of organic salt is about 10% by weight or more, based on the total weight of the well servicing fluid.
21. The method of claim 20 , further comprising an inorganic salt in a concentration of about 10% by weight or more, based on the total weight of the well servicing fluid.
22. The method of claim 19 , wherein the organic amine base is chosen from the compounds of formula 2:
R 3 R 4 R 5 N (2)
where R 3 , R 4 and R 5 are chosen from hydrogen atoms, hydroxyl groups, and substituted or unsubstituted aliphatic groups, with the proviso that at least one of R 3 , R 4 and R 5 is an aliphatic group comprising from 1 to 40 carbons.
23. The method of claim 22 , wherein the aliphatic group is chosen from alkyl groups, alkenyl groups, alkyl hydroxyl groups, —R 6 OR 7 groups, —R 6 CHO groups, and —R 6 COR 7 groups, where R 6 and R 7 are independently chosen from aliphatic groups.
24. The method of claim 22 , wherein the amine base is a polyamine and the at least one aliphatic group is chosen from primary, secondary or tertiary aliphatic amine groups.
25. The method of claim 19 , wherein the amine is chosen from dimethylamine; diethylamine; trimethylamine; triethylamine; N-Coco-N,N-dimethyl amine; Bis-(2-dimethylaminoethyl)ether; polyoxyalkylenediamines; ethoxylated tallow alkyl amines; (C 2 H 5 ) 2 NOH; (HOC 2 H 4 ) 2 NCH 3 and N(C 2 H 4 OH) 3 .
26. The method of claim 25 , wherein the amine is chosen from N,N′N′-polyoxyethylene(15)-N-tallowalkyl-1,3-diaminopropane, polyoxypropylenediamine and N,N′-bis(2-propyl)polyoxypropylenediamine.
27. The method of claim 19 , wherein aqueous based solvent is chosen from fresh water, brine, seawater and produced water.
28. The method of claim 19 , wherein the aqueous based solvent is a brine comprising a concentration of inorganic salt of 0.5% by weight or more, based on the total weight of the brine.
29. The method of claim 19 , wherein the organic acid is chosen from oxoacids of carbon, oxoacids of sulfur and oxoacids of phosphorus.
30. The method of claim 19 , wherein the organic acid is chosen from the compounds of formula 1:
R 1 X y (1)
wherein:
R 1 is chosen from substituted or unsubstituted aliphatic groups and substituted or unsubstituted aromatic groups;
X is chosen from —C(═O)OH, —OS(═O) 2 OH, —S(═O) 2 OH, —OP(═O)(OR 2 )OH, —P(═O)(OR 2 )OH, and —P(═O)OHR 2 , where R 2 is chosen from hydrogen atoms, substituted or unsubstituted aliphatic groups and substituted or unsubstituted aromatic groups; and
y is 1 to 4.
31. The method of claim 19 , wherein the organic acid is chosen from carboxylic acids, sulfonic acids, sulfuric acids, phosphoric acids, phosphonic acids, and phosphinic acids.
32. The method of claim 19 , wherein the organic acid is chosen from propionic acid, acetic acid, propanedioic acid, ethanedioic, succinic acid, maleic acid and dodecylbenzenesulfonic acid.
33. The method of claim 19 , wherein the amine is chosen from R 8 R 9 NH, where R 8 and R 9 are independently chosen from C 1 to C 6 alkyls; R 10 NR 11 2 and R 10 2 NR 11 , where R 10 is a fatty acid and R 11 is chosen from a hydrogen atom, alkyl groups and polyoxyalkylene groups; R 8 2 NOH, (HOR 9 ) 2 NR 8 and N(R 9 OH) 3 , where R 8 and R 9 are independently chosen from C 1 to C 6 hydrocarbon moieties; polyamines with the general formula R 12 R 13 NR 14 NR 15 R 16 , where R 14 is chosen from substituted for unsubstituted alkyl groups, substituted or unsubstituted ether groups and substituted or unsubstituted polyether groups, and R 12 , R 13 , R 15 and R 16 are each bonded to a nitrogen atom and are independently chosen from a hydrogen atom, fatty acids, esters of fatty acids, hydroxyl alkyl groups, polyoxyalkylene groups and C 1 to C 40 alkyls.
34. The method of claim 19 , wherein the acid is a carboxylic acid and the base is a dialkylamine.
35. The method of claim 19 , wherein the fluid is formulated with at least one additional compound chosen from non-emulsifiers, viscosifying agents, surfactants, clay stabilization additives, biopolymer degradation additives, fluid loss control additives and high temperature stabilizers.