Stabilization of iodide-containing brines and brine mixtures
AssigneeTetra Technologies, Inc.
InventorsArthur G. Mack, Drew A. Fowler, Phillip A. Vincent
Life of this patent
Estimating the term…
Abstract
A composition for use in a wellbore activity, the composition comprising an iodide brine, the iodide brine operable to be used in the wellbore activity, the iodide brine comprising an iodide salt, an aqueous fluid, and an iodide protectant, the iodide protectant operable to prevent the presence of free iodine in the iodide brine, where the iodide protectant is present in the range between 0.001 v/v % and 5 v/v % of the iodide brine.
Claims14
A composition for use in a wellbore activity, the composition comprising:
- an iodide brine, the iodide brine operable to be used in the wellbore activity, the iodide brine comprising:
- an iodide salt;
- an aqueous fluid;
- and
- an iodide protectant, the iodide protectant reduces the presence of free iodine in the iodide brine by reacting with iodine present such that the iodide brine is stable, where the iodide protectant is present in the range between 0.001 v/v % and 5 v/v % of the iodide brine, where the iodide protectant is selected from the group consisting of amines, amino alcohols, hydroxylamines, erythorbic acid, ascorbic acid, and combinations of the same, where the amine is selected from the group consisting of ethylenediamine (EDA), diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), pentaethylenehexamine (PEHA), aminoethylpiperazine (AEP), hexaethyleneheptamine (HEHA), piperazine, methoxypropylamine (MOPA), morpholine, n-aminopropylmorpholine (APM), and combinations of the same, where the hydroxylamine is selected from the group consisting of diethylhydroxylamine (DEHA), dimethylhydroxylamine (DMHA), hydroxylamine, and combinations of the same,
- where an APHA value of the composition is between 18 and 209 as determined according to ASTM D12094.
A method of using an iodide brine during a wellbore activity, the method comprising the steps of:
- introducing the iodide brine into a wellbore, the iodide brine comprising:
- an iodide salt,
- an aqueous fluid, and
- an iodide protectant, the iodide protectant operable to prevent the presence of free iodine in the iodide-containing brine, where the iodide protectant is present in the range between 0.001 v/v % and 5 v/v % of the iodide brine, where the iodide protectant is selected from the group consisting of amines, amino alcohols, hydroxylamines, hydrazines, erythorbic acid, ascorbic acid, and combinations of the same,
- where an APHA value of the iodine brine is between 18 and 209 as determined according to ASTM D1209;
- and
- completing the wellbore activity in the wellbore.
Dependencies are inferred from the claim text.