Moisture content of petroleum

MOISTURE CONTENT OF PETROLEUM (EN: oil moisture content; DE: Erdolwassergehalt; FR: teneur en eau du petrole; ES: contenido en agua del petroleo; RU: влагосодержание нефти) is the degree of the water flooding of the petroleum. This moisture content depends mainly on the voluminous consumptions of the formation water, which is arriving together with the petroleum onto the surface, and on the density of this water, and also on the viscosity and density of the petroleum. Under the otherwise equal conditions, the moisture content of the petroleum decreases with the decreasing of the consumption of the water, with the decreasing of the viscosity and density of the petroleum, and with the increasing of the density of the water (which is depending on the amount of the salts, which are dissolved within this water). The moisture content of the petroleum is calculated according to the formula:

where Qv and Qn are the voluminous consumptions of the water and petroleum, respectively. They determine the moisture content of the petroleum under the laboratory conditions (using the Dean-Stark apparatus), and under the productive petroleum field conditions (using the digital moisture meter for the crude petroleum, which is installed onto the flowlines of the boreholes with the continuous mode of the work). Within the USSR, the limiting moisture content of the petroleum at the productive petroleum fields is regulated using the level of 1% (according to the mass).