High Pressure Liquid Chromatography (HPLC) is employed to provide a fully automated analysis profile for routine Performance and Core Flood analysis. This technique requires the test sample to be eluted through a chromatographic column at high pressure. The Scale Inhibitor is separated from the sample matrix through differences in their relative solubility to the HPLC mobile phase and stationary phase, or by differences in the hydrodynamic volume of the analytes. The chemistry of the column (and other instrumental conditions) can be altered to provide different degrees of separation. The Scale Inhibitor can then be directly quantified using one of several detection systems including UV, Charged Aerosol Detector (CAD) & Evaporative Light Scattering Detector (ELSD).
Solid Phase Extraction (SPE) allows Scaled Solutions to separate polymer/brine mixtures by the sample is loaded onto a cartridge with the polymer being retained and the interfering brine salts flushed out with a suitable solvent. Depending on the polymer chemistry we utilise various SPE stationary phases including Strong Anion Exchange (SAX), Weak Anion Exchange (WAX) and Carbon Loaded C8/C18.
Gas Chromatography (GC) is used for the analysis of stabilised crude oil and light distillate fractions including analysis of light ends (C1-C9) ,simulated distillation and detailed hydrocarbon analysis for saturates and aromatics. Capillary columns combined with a programmable temperature vapourising (PTV) injector and a flame ionisation detector (FID) provide separation and quantification of hydrocarbons up to C100. Our mass spec (MS) detector provides detailed hydrocarbon analysis of distillate fractions to 260°C. Sulphur compounds including hydrogen sulphide scavenger by-products can be determined using a flame photometric detection (FPD).