Additives for Kinetic Hydrate Inhibitor Formulations To Avoid Polymer Fouling at High Injection Temperatures: Part 1. A Review of Possible Methods

The main ingredient in kinetic hydrate inhibitor (KHI) formulations is a water-soluble polymer with both hydrophobic and hydrophilic moieties. Many of these KHI polymers have low cloud point (Tcl) and deposition point (Tdp) temperatures. Tdp is often not much higher than Tcl. The low Tdp value can cause unwanted polymer deposition when solutions of the polymers are injected into a hot aqueous well stream, especially high-salinity-produced...