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1. (WO2018048383) ACIDIZING TREATMENT FLUIDS FOR USE IN SUBTERRANEAN FORMATION OPERATIONS

Pub. No.:    WO/2018/048383    International Application No.:    PCT/US2016/050371
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Wed Sep 07 01:59:59 CEST 2016
IPC: C09K 8/532
C09K 8/524
Applicants: HALLIBURTON ENERGY SERVICES, INC.
Inventors: BELAKSHE, Ravikant S.
MALLICK, Monalisa
Title: ACIDIZING TREATMENT FLUIDS FOR USE IN SUBTERRANEAN FORMATION OPERATIONS
Abstract:
The present disclosure relates to acidizing treatment fluids for use in subterranean formation, such as wellbore, operations for dissolving iron sulfide scale, such as iron sulfide scale in sour conditions. Such treatment fluids comprise an aqueous base fluid; an acid; a chelating agent of methylglycine diacetic acid trisodium salt; and a hydrogen sulfide scavenger blend comprising 3-hydroxybutanal, crotonaldehyde, acetaldehyde, and a solvent base fluid.