Page 46 - Handbook Of Multiphase Flow Assurance

Field or laboratory tests for initial solid samples identification 41

See in CPM Light No light Light No light No light No light No light No light No light Light No light

Place in 15 wt% NaCl 1.12 mg/L Floats, dissolve Floats, dissolve with gas bubbles Floats Floats Slowly dissolve Falls Falls Falls Falls Floats Falls Falls Falls Falls

Place in 11% HCl acid 1.05 mg/L Floats, dissolve Floats, dissolve with gas bubbles Floats Dissolve with gas bubbles Falls Slowly dissolve Dissolve, releases H 2 S Floats Falls, dissolve Falls Falls Falls

Place in xylene or toluene 0.86 mg/L Falls Falls, releases gas bubbles Dissolve Falls, dissolve Solid Falls Falls Falls Falls Falls Falls, dissolve Falls Falls

Place in kerosene or diesel 0.82 mg/L Falls Falls, releases gas bubbles Dissolve Falls, slowly dissolve Solid Falls Falls Falls Falls Falls Falls Falls Falls Falls

Heat to 100 °C/ place in boiling water Floats, melt with little or no gas release Floats, active release of gas bubbles Sublimate Floats, dissolve Falls, solid Falls, solid Falls, solid Falls, solid Falls, solid Stable Falls, solid Falls, solid Falls, solid Falls, solid

Simple tests to help identify a solid Expose to air Color Stable White Melts with White gas bubbles Stable White Stable White, brown, black Stable White Stable White, brown Stable White, brown Stable White, brown Heats or Black ignites Stable Brown, white Stable Brown Stable Black, glossy Stable Black Stable Brown

TABLE 2.2 Ice Hydrate Diamondoid Paraffin wax Halite Scale Carbonate Scale Barium Sulfate scale Calcium Sulfate scale Iron sulfide Naphthenate Corrosion products Asphaltene 350 °C coked asphaltene Sand