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Measuring method and electronic measuring device for oil-water content in oil storage tank

A technology of oil-water content and measurement method, which is applied to the measurement of crude oil water content, oil-water content in oil storage tanks, and oil-water interface fields. It can solve the problem of not taking into account the influence of temperature, oil-water density, unfavorable fire and explosion-proof safety of oil tank areas, and increase measurement Equipment installation openings and other problems, to achieve the effect of simple structure, low cost and simple structure

Inactive Publication Date: 2011-11-30
XI'AN PETROLEUM UNIVERSITY
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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
At the same time, the influence of temperature on the density of oil and water is not considered

Method used

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  • Measuring method and electronic measuring device for oil-water content in oil storage tank
  • Measuring method and electronic measuring device for oil-water content in oil storage tank
  • Measuring method and electronic measuring device for oil-water content in oil storage tank

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Embodiment Construction

[0044] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0045] Such as figure 2 Shown, the method for measuring oil-water content in the oil storage tank of the present invention comprises the following steps

[0046] The first step is to measure the liquid level height H in the oil storage tank, the pressure P at the bottom of the oil storage tank, and the temperature T in the oil storage tank;

[0047] In the second step, according to the temperature T in the oil storage tank, use the look-up table method to obtain the temperature-compensated water density ρ 水 and the compensated oil density ρ 油 ; the density of water ρ 水 According to the empirical formula of IFC97 for compensation calculation, the density of oil ρ 油 It is necessary to perform compensation calculations based on the temperature-density relationship data table obtained by the test method;

[0048] The third step is to convert t...

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Abstract

A method for measuring the oil-water content in an oil storage tank and an electronic measuring device, the measurement method is: according to the relationship between the total liquid level height and the static pressure of the liquid column in the oil storage tank to be tested, and the relationship between the density and temperature of oil and water, and at the same time Measure three parameters such as liquid level, hydrostatic column pressure, temperature, etc., calculate the oil and water density according to the measured temperature value compensation, and then calculate the oil and water content; the measuring device is mainly composed of a cane cylinder, a liquid level sensor, Liquid level measurement float, temperature sensor, pressure sensor, electronic device, operation and indication device, battery pack, handle, data interface, etc. The measurement parameters are sampled and stored in the electronic memory of the measurement device, which can be connected and transmitted to the computer The system is convenient for batch and daily calculation processing and data management. Combined with supporting computer software, the historical trend curves of oil well fluid production and oil production can be drawn conveniently by using these data.

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 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. [00...

Claims

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Application Information

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IPC IPC(8): G01N9/36G01F23/64
Inventor 汪跃龙汤楠程为彬霍爱清
Owner XI'AN PETROLEUM UNIVERSITY
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