Patent ID: 11965132
Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. An oil/gas well scale mitigation treatment method, comprising:
pre-treating the oil/gas well to remove organic material,
contacting a sulfate-comprising scale present in the oil/gas well with a conversion solution comprising 5 to 10 weight percent (wt. %) of an alkali metal carbonate, 0.5 to 10 wt. % of a borate salt or hydrate thereof, and 0.5 to 2.5 wt. % of a base to produce a carbonate-comprising scale, wherein wt. % is based on the total weight of the conversion solution; and
exposing the carbonate-comprising scale with an acid solution comprising 7 wt. % of an acid,
wherein the method removes 100% of an initial amount of the sulfate-comprising scale.