Low Dosage Gas Hydrate Inhibitor-LDHI
LDHI's Technical Edge Redefines Inhibition Strategies
Engineering Precision in Hydrate Inhibition
for Enhanced Operational Efficiency
Explore innovative non-thermodynamic chemical inhibitors that diverge from conventional options such as methanol (MeOH) and monoethylene glycol (MEG). Unlike traditional inhibitors, these cutting-edge substances don't alter thermodynamic hydrate equilibrium conditions; instead, they disrupt the hydrate formation process.
Requiring significantly lower dosages compared to thermodynamic inhibitors, these compounds fall into the category of "low dosage hydrate inhibitors" (LDHI), with effective concentrations typically ranging from 500 ppm to 3% of the total water volume treated. This not only minimizes costs but also mitigates storage and handling risks associated with thermodynamic inhibitors.
Kinetic Hydrate Inhibitors
DOSAS low-dosage hydrate inhibitors (LDHI) exhibit effective interference with the nucleation and crystallization of hydrate molecules, thereby prolonging the time required for hydrate formation, known as the induction time. EmendaFlow™ gas hydrate inhibitors, specifically termed kinetic hydrate inhibitors (KHI), predominantly consist of polymer-based materials in aqueous or glycol-based solvent systems. The induction time is influenced by subcooling, representing how much the actual temperature is below the hydrate formation temperature.
Anti-Agglomerants
Low-dosage hydrate inhibitors (LDHI) possess the ability to alter hydrate particles by adsorbing onto or incorporating into the hydrate crystals. EmendaFlow™ specialized chemicals are equipped with at least one long hydrocarbon chain, serving to hinder the agglomeration of hydrate particles and ensuring their dispersion as a slurry. Due to this distinctive property, these chemicals are commonly known as anti-agglomerants (AA).
Evaluate LDHI
Gas Hydrate Inhibitors
DOSAS' capability to evaluate hydrate inhibitors using rocking cell equipment provides a clear understanding of hydrate deposits' morphology and distribution. Beyond qualitative visual output, quantitative data can be recorded, including pressure, temperature, and ball travel time within the rocking cell to determine the initiation time of hydrate formation, hydrate volume fraction derived from the pressure trace, and slurry flowability.
Modelling the
Behaviour of Gas Hydrates
DOSAS assesses production system risks using thermodynamic modelling. Unlike immediate phase boundary crossing, DOSAS employs a kinetic model to identify delays in hydrate formation detection after entering the stable region.