Chelating agent- free treatment fluids and related methods for treating scale deposits
AssigneeSaudi Arabian Oil Company
InventorsFaisal M. ALISSA, Abdulrahman S. ALSULMI, Jehad K. EL-DEMELLAWI, Tariq ALMUBARAK
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Abstract
Methods for reducing and/or preventing scale deposits comprising: contacting one or more components with a treatment fluid, the treatment fluid comprising a mixture of: an aqueous base fluid; an alkaline descaling agent; and a polyacid, thereby reducing the scale deposits on said one or more components, and reducing the formation of pseudo-scale deposits on said one or more components. The treatment fluids may optionally comprise a water-wetting surfactant, a demulsifier, and/or a mutual solvent.
Claims19
A method of reducing and/or preventing scale deposits comprising:
- contacting one or more components with a treatment fluid, the treatment fluid comprising a mixture of:
- an aqueous base fluid;
- an alkaline descaling agent;
- and
- a polyacid,
- thereby reducing the scale deposits on said one or more components, and/or
- reducing the formation of pseudo-scale deposits on said one or more components.
A treatment fluid comprising a mixture of:
- an aqueous base fluid;
- an alkaline descaling agent capable of reducing scale deposits;
- and
- a polyacid capable of preventing formation of pseudo-scale deposits.
Dependencies are inferred from the claim text.