Mineral crystallization is a fundamental and ubiquitous phenomenon that occurs in various natural and industrial processes, including bio mineralization, rocksphere cycling, drug purification, membrane filtration, CO2 geological sequestration, scale formation in oil and gas industry and cooling towers, to mention a few. Extensive studies have been ...

The flow assurance in oil and gas production faces several challenges related to scale formation and control. In order to assess scaling risk in pipes, set a realistic inhibitor limits for scale treatment and improve the efficiency of treatment techniques, a better understanding of the mechanisms that govern scale precipitation kinetics and the ...

Underground injection of acid gas has been studied for several decades for oil field applications, such as enhanced oil recovery (EOR), but is now being studied as a solution to climate change. This research aims to simulate underground conditions at injection sites, such as the pilot scale injection site located near the site of a coal fired power ...

A reliable anoxic plug flow reactor has been developed to study iron sulfide (FeS) precipitation kinetics, solubility, phase transformation, and corrosion simultaneously. The effects of temperature (23 – 125 °C), ionic strength (0.00886 – 5.03 mol/kg), and ferrous iron (Fe(II)) to sulfide (S(-II)) concentration ratio (1:20 to 1:5) were studied. The ...

The revolution of nanotechnology leads to the increasing application of nanoparticles in many industry fields. Nanoparticles, due to the small size, are supposed to transport through subsurface formation without breaking rock structure and thus have received tremendous attention1-12. Nanoparticles also have many unique physical, chemical and optical ...

Friction reducers are essential additives used to economically achieve the high pumping rates required for slickwater fracturing. Decreased friction reducer performance in high-TDS brines has been a major challenge for reusing produced water in hydraulic fracturing. Little work has been done to identify the specific parameters that affect polymeric ...

The development of a high-pressure/high-flow rate soil chromatography system as a protocol method for the rapid screening of chemicals in natural, undisturbed aquifer samples is proposed. A mathematical advective-dispersive transport model was applied which evaluated the soil column and apparatus as a two-layered system. Results pertaining to the ...

The formation kinetics of CaCO3/BaCO3 and BaSO4/SrSO4 solid solution systems is studied in this research. A CaCO3-precoated stainless steel plug flow reactor is developed to study the CaCO3/BaCO3 system. Ba2+ is found to partition into Calcite solid at low concentration, but at high concentration, it can ion exchange for the Ca2+ ions or poison the ...

Pitzer theory is used to predict the solubility of gypsum, anhydrite and calcite over wide ranges of temperature, pressure, and ionic strength with mixed electrolytes, which usually occurs in deep water oil and gas production. Gypsum solubility was measured from 0 to 40 oC, from 14.7 to 20000 psi, with 0 to 4 mol NaCl/kg H2O. Anhydrite solubility in ...

Accurate detection of scale inhibitors has always been crucial to scale control in industry. However, analyzing scale inhibitors at low concentrations, especially with polymeric scale inhibitors, remains an ongoing challenge. This paper presents an assay method designed to detect all types of scale inhibitors, especially at low concentrations, and ...