This effects {HEAD ~ additional release} of gas from {TAIL ~ the emulsion} and stratification of the oil and water 
This effects { HEAD ~ additional release } of gas from { TAIL ~ the emulsion } and stratification of the oil and water
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH