Patent ID: 11920082
Assignee: BROMINE COMPOUNDS LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 6:
7. A wellbore fluid, which is a monovalent brine comprising one or more alkali bromide salt(s) and one or more TCT-reducing additive (s) selected from the group consisting of alkali nitrates, said monovalent brine comprising water and a ternary salt mixture consisting of a first alkali bromide, a second alkali bromide and alkali nitrate, wherein the first alkali bromide is sodium bromide, the second alkali bromide is lithium bromide, potassium bromide or cesium bromide and the alkali nitrate is sodium nitrate; and
wherein the monovalent brine is sodium bromide/lithium bromide/sodium nitrate brine of density from 1.47 gr/ml to 1.49 gr/ml and TCT below −5.0° C., or
wherein the monovalent brine is sodium bromide/potassium bromide/sodium nitrate brine of density from 1.51 gr/ml to 1.54 gr/ml and TCT below −5.0° C., or
wherein the monovalent brine is sodium bromide/cesium bromide/sodium nitrate brine of density from 1.53 gr/ml to 1.57 gr/ml and TCT below −5.0° C.