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High-temperature high pressure oil quality characteristic measuring apparatus and measurement method

A measuring device, high temperature and high pressure technology, applied in the direction of measuring device, DC flow characteristic measurement, specific gravity measurement, etc., can solve the problems of complex process, small range of temperature and pressure, low cost, etc., and achieve simple pretreatment and short measurement cycle , the effect of less oil consumption

Active Publication Date: 2010-07-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] US4027516, US3707871 and US4648262 etc. propose some measuring methods of oil physical properties, but the disadvantage is that the environmental conditions of high temperature cannot be obtained under high pressure conditions at the same time, and the process is complicated and difficult to operate
CN02285488.6 proposes a liquid viscosity measuring device, the main feature is that it has been miniaturized, and the cost is low, but the range of temperature and pressure it can adapt to is small, it is not suitable for examining the physical properties of oil products in a wide range, and the structure is complex and the process is cumbersome

Method used

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  • High-temperature high pressure oil quality characteristic measuring apparatus and measurement method
  • High-temperature high pressure oil quality characteristic measuring apparatus and measurement method
  • High-temperature high pressure oil quality characteristic measuring apparatus and measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～2

[0060] At 13MPa and 300°C, when the density of a certain oil sample is measured, the outflow is 801g, and when the viscosity is measured, the outflow is 553g. It is known that the volume of the lower cylinder is 950ml, so the oil sample density d=801g / 950ml=0.8431g / ml, and its equivalent volume is 553g / 0.8431ml=655ml / 50s. check figure 2 It is known that the viscosity is 3.2mm 2 / s.

Embodiment 3～5

[0062] In order to examine the relationship between the viscosity of residual oil under normal pressure and the viscosity under pressure, a sample of residual oil was selected to examine the relationship between the viscosity of residual oil and the viscosity under pressure at 150°C and 300°C, as shown in Table 4.

[0063] The relation of the viscosity under the table 4 normal pressure and the viscosity under pressure

[0064] temperature, ℃

Embodiment 6～7

[0066] Select a residual oil and its reacted oil sample, and measure its viscosity and density under high temperature and high pressure. The results are shown in Tables 6 and 7.

[0067] Table 6 High temperature and high pressure viscosity and density of residual oil

[0068] pressure, MPa

temperature, ℃

Viscosity, mm 2 / s

Density, g / ml

Atmospheric pressure

150

32

0.8863

13.2

150

38

0.9210

Atmospheric pressure

300

3.0

0.8231

12.0

300

3.3

0.8431

13.1

300

3.4

0.8513

[0069] pressure, MPa

temperature, ℃

Viscosity, mm 2 / s

Density, g / ml

12.0

350

1.2

0.8470

13.0

355

1.5

0.7600

12.2

410

0.70

0.7297

13.2

410

0.73

0.7336

[0070] Table 7 Residue Oil Viscosity and Density Data after Residual Oil Reaction

[0071] p...

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Abstract

The invention discloses a measuring device for measuring oil property under high temperature and high pressure as well as a measuring method thereof. The measuring device consists of an upper cylinder and a lower cylinder, an oil flowing pipeline is arranged between the bottom part of the upper cylinder and the lower cylinder and communicated therewith, an automatic control valve is disposed on the oil flowing pipeline which includes a capillary tube, a pressure equalizing line is arranged at the top part of the upper cylinder and the top part of the lower cylinder, an oil filling port and a pressure control pipeline are mounted at the top part of the upper cylinder, an oil outflow port is arranged at the bottom part of the lower cylinder, and a heating facility is disposed on the upper cylinder, the lower cylinder and the oil flowing pipeline between the two cylinders. The measuring device of the invention can measure the viscosity and density property parameters of oil under the conditions of high temperature and high pressure. The device of the invention solves the problem of property measurement of oil property in particular under high temperature and high pressure, and has advantages of flexibility and practicality, low oil consumption and simple pretreatment, and the measuring device is simple, fast and easy in oil property measurement and operation under high temperature and high pressure, and the measuring period is short.

Description

technical field [0001] The invention relates to a measuring device and method for the physical properties of high-temperature and high-pressure oil products, and is especially suitable for measuring the physical properties of oil products under actual working conditions such as high temperature and high pressure. Background technique [0002] Viscosity, density, etc. are very important physical parameters of oil products. Accurately understanding the physical parameters and changes of oil products in the reaction state is of great significance for controlling and adjusting the process flow, optimizing the production process, improving product quality, and even saving energy and reducing consumption. . However, it is difficult to accurately measure physical parameters such as viscosity and density under the actual working conditions of high temperature and high pressure. People often use empirical formulas summarized by predecessors in tool manuals to calculate the physical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N9/04G01N11/04
Inventor 刘建锟杨涛胡长禄贾丽李鹤鸣贾永忠
Owner CHINA PETROLEUM & CHEM CORP