... concentration upstream oil & gas inhibitor concentration wax remediation wax inhibition asphaltene remediation remediation of hydrates paraffin remediation ppm application blocking time reactor magnetic field comparative test caco 3 nucleation reduction hydrate remediation hydrate...

... insight into different aspects of crystallization such as homogenous and heterogeneous nucleation. Experimental tests have been carried out at SR values of 10, 5 and 3 to follow the kinetics of bulk precipitation by using static tests to track the change in the calcium ion concentration in the solution...

... to the fluids to cause homogeneous nucleation, resulting in the formation of very small particles (5 to 9 µm), which will pass through the production system, hence preventing/reducing heterogeneous nucleation and deposition on the tubing surface. Previous work revealed that such a device had a measurable impact...

... Abstract The paper reviews operational issues that arise when MEG is used for hydrate inhibition, especially when it is regenerated and recirculated. Thermodynamic equilibrium software can assess the scaling risk to some extent. Utilisation of data on nucleation and growth of scale formers like...

... at steady state controlled the amount of scale. The presence of Mg 2+ retarded the nucleation rate of calcium carbonate and thereby lowered the surface areas available for consumption of Ca 2+ and CO 3 2− in in the bulk solution. It resulted in higher CaCO 3 supersaturation which promoted scaling...

... to 200 0 C), and at various TDS levels. Mineral nucleation (precipitation) kinetics as a function of the pressure was investigated under similar thermodynamic driving force (supersaturation level). Based on the experimental data, a robust semi-empirical barite nucleation model that correlates...

... such a model, detailed and revised laboratory procedures have been developed to study nucleation and precipitation kinetics of anhydrite at 125-175 ºC, different supersaturation, water composition, and long reaction time. Predictions of this scaling risk model suggest a saturation index (SI) of 0.8...

... inhibitor is dispersion/nucleation, type-2 is nucleation/growth and type-3 has no inhibition function on ZnS. The test results conducted at 170°C agree well with the mechanism assumed by the previous mechanism study, and the inhibition mechanisms are reinforced. The minimum inhibitor concentration (MIC...

... empirical model oilfield chemistry scale inhibition adhesion nucleation laminar turbulent flow fouling scaling brine mineral surface energy complex scaling brine laminar flow Flow Condition subsurface safety valve geologist turbulent condition geology anti-fouling property Introduction...

... Abstract This work reports a reliable and systematic study of barite nucleation kinetics in the presence of scale inhibitors from 4 °C to 90 °C and at various conditions. In this study, we designed and developed an apparatus to study the nucleation kinetics of barite scale formation...

... Remediation hydrate inhibition asphaltene inhibition wax remediation wax inhibition asphaltene remediation remediation of hydrates water management oilfield chemistry scale inhibition concentration nacl 6 batch system nucleation experiment precipitation kinetic ionic strength inhibitor scale...

... with traditional test methods, this test method provides a quick and effective way to understand the scale inhibitors, including the effect of scale inhibitors on the induction, nucleation and growth stages of scale formation, and also the dispersion functions of scale inhibitors. Several typical commercial scale...

... method. The ZnS scale inhibitors were classified as three types based on the inhibition mechanisms from this work: Type 1: Dispersion and nucleation inhibitors. These scale inhibitors showed nucleation and growth inhibition effect at low concentrations of sulfide and dispersion effect at high...

.... These scale inhibitors showed a dispersion effect on PbS formation. The turbidity in stress curve in the presence of these inhibitors is slightly higher than that in the absence of scale inhibitors. Type 2: Nucleation/growth dominated scale inhibitors. These scale inhibitors inhibit nucleation and growth...

... as a function of porosity decrease. Towards the end of the experiment a dramatic decrease in permeability, typical to tube blocking test behavior, was observed. Visualization experiments using two dimensional glass porous medium models showed that when crystals had been formed by nucleation, further...

... in intelligent engineering design can significantly reduce the problems and costs associated with seawater injection. Equations for engineering design of such treatment were derived from nucleation kinetics, inhibition efficiency, and inhibitor adsorption and transport. Sulfate tolerance in the presence of scale...

... inhibition inhibitor wax remediation concentration nucleation static adsorption test mechanism active component adsorption PPM supersaturated solution halite inhibition oilfield chemistry asphaltene remediation Fluid Dynamics halite inhibitor salt crystal Compound enhanced recovery squeeze...

... that the higher saturation ratio values for barite at the bottom of the well is a consequence of mixing of high sulfate brine from sea water breakthrough with high barium brine formation water). The location of the scale formation can be predicted from knowledge of the nucleation induction time coupled with mass...

... of hydrate inhibitors on barite solubility are documented, the impact of hydrate inhibitors on the nucleation kinetics of barite formation and the efficiency of common scale inhibitors has not been studied. Phosphonates and polycarboxylic acids are good inhibitors of mineral nucleation and are widely...

... Abstract PPCA and DETPMP are two common commercial scale inhibitors used to control mineral scaling in the oil and gas industry. Normally, PPCA is regarded as a nucleation inhibitor and DETPMP as a growth inhibitor. In this paper, the effect of PPCA and DETPMP blends on the inhibition...