Blend of phosphonate acids for scale prevention in high alkalinity and high co2 environments
AssigneeHalliburton Energy Services, Inc.
InventorsZhiwei YUE, Yi Tsung LU, Gleydston Neri Dos SANTOS
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Abstract
Treatment fluids and methods for preventing the formation of scale. A treatment fluid is provided to the wellbore. The treatment fluid is composed of polyamino polyether methylene phosphonate (PAPEMP), aminoethylethanolamine tri(methylene phosphonate) (AEEA), an organic acid, and an aqueous base fluid. The treatment fluid is introduced into a wellbore penetrating a subterranean formation. A mineral in the wellbore is contacted with the treatment fluid thereby preventing further mineral formation and deposition.
Claims20
A treatment fluid for preventing the formation of scale, the treatment fluid comprises:
- polyamino polyether methylene phosphonate (PAPEMP),
- aminoethylethanolamine tri(methylene phosphonate) (AEEA),
- an organic acid, and
- an aqueous base fluid.
A method for preventing the formation of scale, the method comprises:
- providing a treatment fluid comprising:
- polyamino polyether methylene phosphonate (PAPEMP),
- aminoethylethanolamine tri(methylene phosphonate) (AEEA),
- an organic acid, and
- an aqueous base fluid,
- introducing the treatment fluid into a wellbore penetrating a subterranean formation,
- contacting a mineral in the wellbore with the treatment fluid thereby preventing further mineral formation and deposition.
A system for preventing the formation of scale, the system comprises:
- a treatment fluid comprising:
- polyamino polyether methylene phosphonate (PAPEMP),
- aminoethylethanolamine tri(methylene phosphonate) (AEEA),
- an organic acid, and
- an aqueous base fluid;
- mixing equipment configured to mix the PAPEMP, AEEA, organic acid, and aqueous base fluid;
- and
- pumping equipment configured to pump the treatment fluid into a wellbore.
Dependencies are inferred from the claim text.