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Online measurement equipment of viscosity of crude oil and measurement method

A technology of measuring equipment and measuring method, which is applied in the field of petrochemical industry, can solve the problems of high stability requirements of fluid and surrounding measurement environment, relatively strict requirements of measurement conditions, and great influence of environmental vibration, etc., and the online measurement method is simple and easy to implement , low stability requirements, and low environmental vibration

Inactive Publication Date: 2019-05-10
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, with its unique measurement method, the rotary measurement method has the widest application range among all methods for measuring liquid viscosity, but the rotary method has low precision and requires high stability for the fluid and the surrounding measurement environment.
The vibration method online viscometer measures the fluid viscosity, the response speed is fast, and the measurement accuracy is widely applicable, but the requirements for the measurement conditions are more stringent. Generally, the sample to be tested is required to have a high stable shear rate and the measurement sensitivity is high. , single-point measurement is greatly affected by environmental vibration

Method used

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  • Online measurement equipment of viscosity of crude oil and measurement method
  • Online measurement equipment of viscosity of crude oil and measurement method
  • Online measurement equipment of viscosity of crude oil and measurement method

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Experimental program
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no. 1 approach

[0066] In the first embodiment of the present invention, an on-line measurement device for crude oil viscosity is provided, including: an oil suction circuit, a metering device B and a viscosity detection device C, wherein the oil suction circuit is connected in parallel with the main oil pipeline A; the metering device B It is connected (in series) with the oil suction oil circuit; the viscosity detection device C is connected (in series) with the metering device B through the oil suction oil circuit. in particular:

[0067]

[0068] The oil suction oil circuit of the present invention is arranged in parallel with the main oil circuit pipeline A, and is used for extracting crude oil samples from the main oil circuit pipeline A. In the present invention, the oil suction circuit may include a first oil circuit and a second oil circuit, wherein,

[0069] The first inlet pipe of the first oil circuit is connected in series with the first oil port of the metering device B; the ...

no. 2 approach

[0097] The second embodiment of the present invention provides an on-line measurement method for detecting the viscosity of crude oil by using the on-line measuring device for crude oil viscosity in the first embodiment, comprising the following steps: extracting a crude oil sample from the main oil pipeline A by using the oil suction circuit ; Use the metering device B to control the flow of the crude oil sample; use the viscosity detection device C to measure the viscosity of the crude oil sample. in particular:

[0098] The oil absorption oil circuit of the present invention includes a first oil circuit and a second oil circuit, wherein, when the crude oil sample passes through the first oil circuit, the crude oil sample passes through the first inlet pipe of the first oil circuit through the first inlet pipe of the metering device B. The oil port is transported to the metering device B, and flows out from the second oil port of the metering device B, and is transported to ...

Embodiment 1-6

[0135] First, the first valve 1 is opened, and the crude oil in the sand enters the oil suction circuit from the main oil pipeline A; the power device D is started, and during the upward movement of the piston (plunger) in the metering device B, the second valve 2 and the fifth The valve 5 is opened, the third valve 3 and the fourth valve 4 are closed, and the crude oil sample in the sand is pressed by the metering device B. figure 1 The first oil passage shown enters the viscosity detection device C with a constant flow rate. When the piston (plunger) in the metering device B goes up to the limit, it switches to the downward process, the third valve 3 and the fourth valve 4 are opened, the second valve 2 and the fifth valve 5 are closed, and the metering device B is used to make the sand Crude oil samples can still be pressed at a constant flow figure 2 The second oil passage shown enters the viscosity detection device C.

[0136] Open the sixth valve 6 to make the crude ...

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Abstract

The invention provides online measurement equipment of viscosity of crude oil and a measurement method. The online measurement equipment comprises an oil absorption line, a metering device and a viscosity detection device; the oil absorption line and a main oil line pipeline are connected in parallel; the metering device communicates with the oil absorption line; and the viscosity detection communicates with the metering device. The online measurement equipment provided by the invention is high in measurement precision, and has low requirement on the fluid and surrounding measurement environment stability; the requirement on the measurement condition is low, and the measurement sensitivity is high; the environment vibration influence on the single-point measurement is comparatively small,and the measurement equipment can be used for quickly, accurately, conveniently and online measuring the viscosity of the crude oil.

Description

technical field [0001] The invention relates to an on-line measuring device and a measuring method of crude oil viscosity, belonging to the field of petrochemical industry. Background technique [0002] Viscosity is a measure of the viscosity of the fluid during the flow process, and it is a manifestation of the frictional resistance inside the fluid. Its essence is the macroscopic manifestation of the microscopic action of the fluid molecules. In the field of oil and gas industry, viscosity is an important indicator of petroleum products, which will directly affect its flow properties in pipelines, and is of great significance to the development, storage and transportation of petroleum products. [0003] In recent years, many domestic and foreign manufacturers have successively developed online viscometers using different testing principles, which not only improves the detection accuracy, but also avoids errors caused by the long storage time of oil products. At present, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/08
Inventor 曹旦夫李皓李亚平王军防苏航倪广地王一然许丹崔迪王长保张高平余红梅张春吴杰张一丁孙祖一尤金龙麻广
Owner CHINA PETROLEUM & CHEM CORP
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