Method and device for measuring oil-water content in oil storage tank

Abstract

A method and device for measuring oil-water content in an oil storage tank. The measuring device is a hollow cylinder with a pressure gauge, the test head of the pressure gauge is located at the bottom opening of the cylinder, and the display head of the pressure gauge is located at the bottom of the cylinder. The top is open, and there is a size scale on the outer wall of the cylinder for reading the liquid height of the oil storage tank; the measurement method is, at first, insert the measuring stick of the present invention into the oil storage tank, and read out the height of the oil storage tank from the pressure gauge of the device. The pressure P at the bottom of filling; then read the liquid level height H in the oil storage tank from the scale of the measuring stick; then according to the formula P=ρ water H water g+ρ oil H oil g, and H=H water+H oil, Calculate the height H of the water in the oil storage tank and the height H of the oil, where ρ water refers to the density of water, and ρ oil refers to the density of oil, which is set to a known value; finally, according to the formula V water = SH water, V Oil=SH oil, the content of oil and water in the oil storage tank can be obtained, where S refers to the cross-sectional area of ​​the inner cavity of the oil storage tank; Measurement of water content in smaller oil storage tanks.

Description

technical field [0001] The invention belongs to the field of oil-water parameter measurement, and relates to the measurement of oil-water content in oil storage tanks, in particular to a method and device for measuring oil-water content (oil-water volume ratio), oil-water interface, and crude oil water content (water content in oil) in crude oil storage tanks. Background technique [0002] In the crude oil production process, the crude oil buffer storage tank at the wellhead of the oil production well is a common equipment for the oil production well. Accurate measurement of oil storage and water storage in storage tanks is an important means of measuring oil well production (oil production, liquid production), and is the key to optimizing well pattern layout and improving oil recovery technology. During the storage and transportation of crude oil or oil products, the determination of the water content in the oil storage tank is a key process parameter for custody transfer. ...

AI Technical Summary

Problems solved by technology

[0006] The common disadvantage of the above methods is that it is necessary to install measuring equipment on each storage tank, which is expensive and expensive to measure, and it is necessary to increase the installation opening of the measuring equipment, which increases the leakage point, which is not conducive to the fire and explosion protection of the oil tank farm. Safety

Images