Gas hydrates are crystalline solids with cage-like structures [clathrates] in which a hydrocarbon molecule is enclosed in a lattice of water molecules. Although they have the appearance of ice or snow, gas hydrates crucially form at pressures and temperatures above the freezing point of water.
Gas hydrates are of particular interest to the oil and gas industry as they can form at various stages of production where the crystals can agglomerate to form a blockage.
KAT’s 8, [500 ml] autoclaves and 16, [45 ml] Non-Visual Rocking Cells are typically used for the evaluation of thermodynamic and kinetic hydrate inhibitors.
KAT’s 2, [40ml] sapphire tube, Visual Rocking Cells are typically used for the evaluation of anti-agglomerant hydrate inhibitors.
Each hydrate test cell has a maximum working pressure of 2,900psi [200barg] and can be computer temperature controlled between 0 and +30°C [32 and 86°F]. Temperature and pressure data for each cell is monitored and logged by computer. In the case of the Visual Rocking Cells, the contents of each test cell are also captured using digital video cameras.
KAT has developed a range of standard gas hydrate test protocols in conjunction with both BP and Shell; however, KAT’s flexible control technology means that bespoke, client specific test methods to easily be achieved.