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Method for improving accuracy of determination of water content of crude oil

A water content and accuracy technology, which is applied in the preparation of test samples, measuring devices, instruments, etc., can solve the problems of sample bumping, affecting the accuracy of sample integrity determination of crude oil water content, etc., to improve accuracy , avoid bumping accidents, and protect the integrity of the effect

Inactive Publication Date: 2017-09-15
SICHUAN XILIN OIL SUPPLIES EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the accuracy of determination of crude oil water content, so as to solve the problem that during the heating and distillation process of crude oil, sample flushing and bumping will occur, thereby affecting the integrity of the sample and the accuracy of determination of crude oil water content

Method used

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  • Method for improving accuracy of determination of water content of crude oil
  • Method for improving accuracy of determination of water content of crude oil
  • Method for improving accuracy of determination of water content of crude oil

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Such as figure 1 Shown, the present invention improves the method for measuring accuracy of crude oil water content, comprises the steps:

[0042]Step A: Add the industrial distillation solvent into the heating bottle 1 and stir to mix the distillation solvent and crude oil evenly;

[0043] Step B: put the crude oil treated in step A into the crude oil homogenization system, and homogenize the crude oil through the crude oil homogenization system, so that the substances other than crude oil in the flask are evenly distributed in the crude oil; Send to crude oil water content measuring instrument and carry out distillation;

[0044] Step C: connect 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 is equipped with sample crude oil;

[0045] Step D: Connect the condensation pipe 5 to the exhaust pipe 2 through the connecting pipe 4, install the solenoid valve 6 on the co...

Embodiment 2

[0053] The present invention is based on embodiment 1, and the present invention is further described.

[0054] Such as figure 1 As shown, the method for improving the determination accuracy of the water content of crude oil in the present invention also includes step G arranged after step F, said step G: 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.

[0055] 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 s...

Embodiment 3

[0057] The present invention is based on embodiment 2, and the present invention is further described.

[0058] Such as figure 1 As shown, the method for improving the determination accuracy of crude oil water content in the present invention also includes step H arranged between step B and step C and step I arranged after step G;

[0059] Step H: put the heating bottle 1 containing 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;

[0060] Said step I: start the vacuum pump 7, and make the vacuum pump 7 extract the gas in the heating bottle 1 through the exhaust pipe 8, so that the heating bottle 1 is under negative pressure.

[0061] 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...

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Abstract

The invention discloses a method for improving accuracy of determination of water content of crude oil, and the method comprises the following steps: step B, a distillation solvent is added into a heating bottle and stirred; step C, the crude oil is put into a crude oil homogenization system; step A, the heating bottle, an exhaust pipe and a condenser are connected in sequence; step D, a condenser pipe is communicated with the exhaust pipe by a connecting pipe, and an electromagnetic valve is arranged on the connecting pipe; step E, a liquid level sensor is installed in the condenser; and step F, the electromagnetic valve and the liquid level sensor are respectively connected with a controller. The crude oil is first homogenized, the evenly-mixed crude oil can effectively avoid bumping accidents in the heating distillation process; in the distillation process, the controller adjusts the working state of the electromagnetic valve to distribute oil and gas distilled in the heating bottle to the connecting pipe and the condenser pipe so as to avoid products obtained by the distillation to rush out the condenser and avoid bumping and sample rushing, and sample integrity and the accuracy of the determination of the water content of the crude oil can be ensured.

Description

technical field [0001] The invention relates to a method for improving the measurement accuracy of crude oil, in particular to a method for improving the measurement accuracy of the water content of crude oil. 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 ...

Claims

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Application Information

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IPC IPC(8): G01N25/14G01N1/38
CPCG01N25/14G01N1/38
Inventor 贺昶明
Owner SICHUAN XILIN OIL SUPPLIES EQUIP
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