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