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Method and system for measuring density of wax-containing crude oil

A technology for density measurement and crude oil, applied in measuring devices, specific gravity measurement, instruments, etc., can solve the problem of low density accuracy of high waxy crude oil

Inactive Publication Date: 2019-11-05
PETROCHINA CO LTD
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  • Application Information

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Problems solved by technology

[0004] This application provides a method and system for measuring the density of waxy crude oil, which can solve the problem of low accuracy of the density of high waxy crude oil measured due to deposits in the vibrating tube of the online vibrating tube liquid density meter in the related art

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  • Method and system for measuring density of wax-containing crude oil
  • Method and system for measuring density of wax-containing crude oil
  • Method and system for measuring density of wax-containing crude oil

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Embodiment Construction

[0049] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0050] In the related art, the density of the high waxy crude oil can also be measured manually. A worker may take a crude oil sample (ie, take a sample) from the crude oil pipeline to determine the density of the crude oil sample. However, in this process, manual sampling is required, and the continuity of manual sampling is poor, resulting in poor representativeness of the crude oil samples taken, which in turn leads to lower accuracy and lower efficiency in determining the density of the high waxy crude oil. Low. In addition, because some crude oil contains volatile toxic substances, manual sampling will affect the health of workers.

[0051] The embodiment of the present invention provides a method for measuring the density of wa...

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Abstract

The invention discloses a method and a system for measuring the density of wax-containing crude oil, and relates to the field of crude oil metering. In a cleaning stage, cleaning liquid is heated, andthe heated cleaning liquid is introduced into an inner cavity of a vibrating tube of an on-line densimeter so as to clean the on-line densimeter. In a measuring stage, the wax-containing crude oil isintroduced into the inner cavity of the vibrating tube of the cleaned on-line densimeter so as to determine the density of the wax-containing crude oil. The cleaning liquid has dissolved sediments inthe inner cavity of the vibrating tube of the on-line densimeter before the density is measured, and the sediments can be discharged out of the on-line densimeter along with the cleaning liquid, so that the subsequent measurement accuracy of the density of the wax-containing crude oil can be prevented from being influenced by the sediments in the on-line densimeter, and the on-line continuous andaccurate measurement of the density of the wax-containing crude oil is realized.

Description

technical field [0001] The present application relates to the field of crude oil measurement, in particular to a method and system for measuring the density of waxy crude oil. Background technique [0002] In related technologies, the density of crude oil can be measured by an online vibrating tube liquid density meter, so as to lay a foundation for crude oil custody transfer and quality assessment. [0003] However, for high waxy crude oil (that is, crude oil with high wax content), due to the high wax precipitation point of the high waxy crude oil, wax crystals are easy to precipitate and deposit in the vibrating tube of the online vibrating tube liquid density meter, resulting in The natural vibration frequency of the vibrating tube changes, which leads to low accuracy of the density of high waxy crude oil measured by the online vibrating tube liquid density meter. Contents of the invention [0004] This application provides a method and system for measuring the densit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N9/00
CPCG01N9/002G01N2009/006
Inventor 穆承广程磊李跟臣刘国豪马婕冯少广翟星月李东阳潘腾周阳尹向阳张广超陈晓东张帅齐迎峰许元伟李洋赵洪建张宏亮王华东
Owner PETROCHINA CO LTD
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