Method of barite scale removal
AssigneeKing Fahd University of Petroleum and Minerals
InventorsJaber AL JABERI, Badr BAGERI, Tinku SAIKIA
Life of this patent
Estimating the term…
Abstract
A method of barite scale removal includes injecting a drilling fluid system containing a nanodot-treated chelating agent into tubing disposed in a wellbore in a subterranean geological formation. A chelating agent in the nanodot-treated chelating agent is diethylenetriamine pentaacetate and/or ethylenediaminetetraacetic acid. The nanodot-treated chelating agent has an emission wavelength of 400 to 500 nm while being illuminated with ultraviolet light at a wavelength of 365 nm. The method further includes circulating the drilling fluid system in the tubing to remove the scale from the tubing.
Claims20
A method of barite scale removal, comprising:
- injecting a drilling fluid system comprising a nanodot-treated chelating agent into tubing disposed in a wellbore in a subterranean geological formation,
- wherein a chelating agent in the nanodot-treated chelating agent is selected from the group consisting of diethylenetriamine pentaacetate and ethylenediaminetetraacetic acid,
- wherein the nanodot-treated chelating agent has an emission wavelength of 400 to 500 nm while being illuminated with ultraviolet light at a wavelength of 365 nm, and
- circulating the drilling fluid system in the tubing to remove the scale from the tubing.
Dependencies are inferred from the claim text.