Method and apparatus for online detecting water and oil content in petroleum
A measuring device and water content technology, applied in the direction of measuring devices, specific gravity measurement, instruments, etc., can solve the problems of poor sealing, difficult to carry and disassemble, etc., to save time and cost, improve work efficiency, ensure accuracy and speed Effect
Active Publication Date: 2016-10-12
南通市飞宇石油科技开发有限公司
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[0005] In order to overcome the problems in the prior art that the equipment for online detection of water and oil content in petroleum is not easy to carry and disassemble, and the sealing performance is not good, the present invention provides a method and device for on-line detection of water and oil content in petroleum
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[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0037] The invention discloses a method for online detection of oil water content, such as figure 1 as shown,
[0038] Step 1: Obtain the differential pressure between any two points P1 and P2 on the oil pipeline, wherein P1 and P2 do not coincide. Preferably, the distance between P1 and P2 is 10 meters to 50 meters. In the present invention, P1 and P2 are set to The distance between the two points of P2 is 10 meters. The pressures at two points on the pipeline are P1 and P2 respectively, and the differential pressure between the two points is ΔP. ΔP reflects the average density of crude oil liquid in this section of the volume. According to the principle of hydrostatics, ΔP=ρgh, where ΔP ...
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The invention provides a method and apparatus for online detecting water and oil content in petroleum. The method comprises the following steps of: firstly acquiring a differential pressure between any two points P1 and P2 on a petroleum pipeline, wherein the two points P1 and P2 are not overlapped; calculating a percentage of relative contents of water and other impurities in crude oil according to the differential pressure value between the two points P1 and P2 acquired in step I; and calculating a total value of crude oil in the petroleum pipeline, calculating the content of water and other impurities in the crude oil according to the percentage of the relative contents of water and other impurities obtained in step 2, and further obtaining the oil content in the crude oil. The invention also provides an apparatus for online detecting water and oil content in the petroleum. The differential pressure in the petroleum pipeline can be directly detected by virtue of a differential pressure sensor according to the principle that the water content is different under different pressures, and the water and oil content in the pipeline is measured online. The apparatus is simple in structure, easy to operate and maintain, capable of performing the online detection and requiring no multiple sampling and easy to popularize.
Description
technical field [0001] The invention relates to the technical field of petroleum detection devices, in particular to a method and device for on-line detection of the water and oil content of petroleum. Background technique [0002] The water content of crude oil is an important parameter in the petrochemical industry. The detection of water content of crude oil is a common concern in crude oil extraction. If the water content of crude oil is not detected accurately, it will directly affect the dynamic analysis of oil wells and oil layers. The dehydrator at the point of failure will re-energize the electric field to reduce dehydration. As a result, it causes a lot of energy waste for crude oil gathering and transportation. At present, most of the oil pipelines in China adopt the method of measuring water content by opening on the side of the oil pipeline, and fixing the probe of the water content detector through the flange. If there is wax hanging on the probe, it is necessa...
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Login to View More IPC IPC(8): G01N9/36
CPCG01N9/36
Inventor 刘思齐马纯邰九龙
Owner 南通市飞宇石油科技开发有限公司