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A method and system for detecting the water content of crude oil in an oilfield joint station

A detection method and combined station technology, applied in the direction of measuring devices, material inspection products, instruments, etc., can solve problems such as poor reliability

Active Publication Date: 2017-12-22
XIAN AOYIER PETROLEUM TECH CO LTD
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Problems solved by technology

However, on the one hand, such correction needs to add temperature sensors and correction algorithms. On the other hand, it cannot be reliably corrected for changes in crude oil density caused by changes in oil well cycle and geological conditions. Therefore, the crude oil content measured by the above-mentioned method in the prior art Water volume, relatively poor reliability

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  • A method and system for detecting the water content of crude oil in an oilfield joint station
  • A method and system for detecting the water content of crude oil in an oilfield joint station
  • A method and system for detecting the water content of crude oil in an oilfield joint station

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Embodiment Construction

[0019] In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

[0020] See figure 1 After the water-bearing crude oil enters the settling tank, due to its different density, it is divided into low water-bearing crude oil layer, emulsified layer and water layer from high to low due to gravity. The water content distribution of each layer after the water-bearing crude oil is stratified can be found in figure 2 , The water content in the water layer changes drastically, and the water content of the emulsified layer also changes significantly. With the increase in h...

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Abstract

The invention discloses a method and system for detecting the water contents of crude oil of an oil field united station. The method comprises the steps that the water content of a stability area in a low water-containing crude oil layer in a sedimentation tank is preset, so that the real-time density of crude oil in the water-containing crude oil is calculated in real time, and furthermore, the water contents of all heights in the sedimentation tank are calculated according to the real-time density of the crude oil and in combination with the water-containing crude oil density measured for all heights in the sedimentation tank. Therefore, under the condition that temperature correction is not needed, the water contents of all heights in the sedimentation tank can be calculated through real-time crude oil density, and reliability of the measurement result is improved.

Description

Technical field [0001] The invention relates to the technical field of crude oil detection. Background technique [0002] For crude oil in the process of extraction, dehydration, metering, gathering and transportation, and sales, crude oil production and crude oil water content are the most important indicators. The water cut test error directly affects the dynamic analysis of oil wells and reservoirs, destroys the electric field in the electric dehydrator, reduces the dehydration effect, and causes a lot of energy waste for crude oil gathering and transportation. Therefore, online crude oil water cut detection is often important. In the crude oil production process, real-time and accurate measurement of water content is still one of the difficulties in detection technology; because crude oil contains water, silt, and viscosity, especially in cold areas, the measurement accuracy and service life of contact measuring instruments are very important. Great impact; the general detec...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/28
CPCG01N33/2847
Inventor 王君岳梁莹张腾王瑞青
Owner XIAN AOYIER PETROLEUM TECH CO LTD