Geochemical Modeling of Celestite (SrSO4) Precipitation and Reactive Transport in Shales

• Published in: Environmental science & technology Vol. 56; no. 7; pp. 4336 - 4344
• Main Authors: Esteves, Barbara F, Spielman-Sun, Eleanor, Li, Qingyun, Jew, Adam D, Bargar, John R, Druhan, Jennifer L
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 05.04.2022; American Chemical Society (ACS)
• Subjects: Additives; Batch reactors; carbonates; Celestite; celestite precipitation; Chemical precipitation; Complex systems; Design of experiments; Energy and Climate; environmental science; ENVIRONMENTAL SCIENCES; Experimental design; geochemical modeling; Geochemistry; Hydraulic Fracking; Hydraulic fracturing; hydraulic fracturing fluids; Ionic strength; Minerals - chemistry; Mitigation; Modelling; Natural Gas; Osmolar Concentration; reactive transport; Saturation index; Shale; Shales; Strontium; Strontium sulfate; sulfate mineral scaling; Sulfates; thermodynamics; sulfate mineral scaling; geochemical modeling; hydraulic fracturing fluids; celestite precipitation; reactive transport

Celestite (SrSO4) precipitation is a prevalent example of secondary sulfate mineral scaling issues in hydraulic fracturing systems, particularly in basins where large concentrations of naturally occurring strontium are present. Here, we present a validated and flexible geochemical model capable of p...