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Method for preventing sample impact in determination of crude oil

A crude oil and sample flushing technology, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as the accuracy of crude water content determination and sample flushing that affect the integrity of samples, and achieve the effect of protecting integrity and accuracy.

Inactive Publication Date: 2017-10-17
SICHUAN XILIN OIL SUPPLIES EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preventing sample flushing during the determination of crude oil, and to solve the problem that sample flushing occurs during the heating and distillation process of crude oil, which in turn affects the integrity of the sample and the accuracy of the determination of the water content of crude oil

Method used

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  • Method for preventing sample impact in determination of crude oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the present invention prevents the sample flushing method of crude oil measurement, comprising the following steps: Step A: connecting the heating bottle 1, the exhaust pipe 2 and the condenser 3 in the crude oil water content measuring instrument in sequence, and the heating bottle 1 Contains sample crude oil;

[0032] Step B: Connect the condensation pipe 5 to the exhaust pipe 2 through the connecting pipe 4, install the solenoid valve 6 on the connecting pipe 4, and control the opening and closing of the connecting pipe 4 through the solenoid valve 6;

[0033] Step C: installing the liquid level sensor in the inner tube of the condenser 3;

[0034] Step D: Connect the solenoid valve 6 and the liquid level sensor to the controller. The liquid level sensor transmits the liquid level information in the inner tube of the condenser 3 to the controller, and the pressure sensor transmits the pressure information in the inner tube of the condenser...

Embodiment 2

[0038] The present invention is based on embodiment 1, and the present invention is further described.

[0039] Such as figure 1 As shown, the method of the present invention to prevent sample flushing during crude oil determination also includes step E arranged after step D, said step E: the pressure sensor is arranged on the top of the inner tube of the condenser 3, and the pressure sensor is connected with the control The pressure sensor transmits the pressure information in the inner pipe of the condenser 3 to the controller, and the controller receives the information from the pressure sensor, and controls the on-off state of the solenoid valve 6 according to the pressure information.

[0040] When the condensation speed of the condenser 3 is slow, and there is a lot of gas in the inner tube and the pressure is high, the oil and gas will rush out of the condenser 3, which is not conducive to protecting the integrity of the sample. Therefore, a pressure sensor is set on t...

Embodiment 3

[0042] The present invention is based on embodiment 2, and the present invention is further described.

[0043] Such as figure 1 As shown, the method of the present invention to prevent sample flushing during crude oil determination also includes step F arranged before step A and step G arranged after step E;

[0044]The step F: put the heating bottle 1 containing the crude oil into the cooling device, perform cooling treatment on it, and then send the heating bottle 1 that has completed the cooling treatment into step A;

[0045] Step G: start the vacuum pump 7, and make the vacuum pump 7 pump out the gas in the heating bottle 1 through the exhaust pipe 8, so that the heating bottle 1 is under negative pressure.

[0046] Before distillation, earlier with vacuum pump 7, the air in heating bottle 1 is taken away a part, makes the air pressure in vacuum pump 7 less than one MPa. Reducing the air pressure in the heating bottle 1 can correspondingly reduce the temperature requir...

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Abstract

The invention discloses a method for preventing sample impact in determination of crude oil. The method comprises the following steps: A, communicating a heating bottle, an exhaust pipe and a condenser of a crude oil water content determining instrument in sequence; B, communicating a condensing pipe with the exhaust pipe through a connecting pipe, and mounting an electromagnetic valve on the connecting pipe; C, mounting a liquid level sensor in an inner pipe of the condenser; and D, connecting both the electromagnetic valve and the liquid level sensor with a controller. When over-high liquid level information sensed by the liquid level sensor is transmitted to the controller, the electromagnetic valve is adjusted by the controller, so that oil gas distilled in the heating bottle is shunt into the connecting pipe, and a product obtained by distilling is prevented from rushing out of the condenser; and therefore, the integrity of the sample and the accuracy of crude oil water content determination are protected.

Description

technical field [0001] The invention relates to a method for preventing sample flushing, in particular to a method for preventing sample flushing during crude oil determination. Background technique [0002] In the process of exploitation and management of oil and gas fields, the precise measurement of the water content of crude oil is a very important economic and technical index, which involves all aspects of crude oil exploitation, storage and transportation, sales and processing. It can accurately measure the liquid production rate, oil production rate and water production rate of each production single well, metering station, oil production area and oil production plant in the oilfield production process. [0003] Usually, samples of crude oil are sent to the laboratory to determine the water content in crude oil by distillation. Since crude oil is a multi-component, multi-hydrocarbon mixed odor, its boiling characteristics after mixing with solvents will change due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/28
CPCG01N33/2823
Inventor 贺昶明
Owner SICHUAN XILIN OIL SUPPLIES EQUIP
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