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Test method for viscosity of high-viscosity heavy crude oil

A heavy crude oil and testing method technology, applied in the direction of measuring devices, flow characteristics, instruments, etc., can solve the problems of high cost, formation pollution, and difficult implementation process of burning oil layers, and achieve low testing cost, high testing accuracy, and reduced The effect of testing costs

Inactive Publication Date: 2014-05-07
江雪连
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The difficulty of burning oil reservoirs is that the implementation process is difficult, it is not easy to control underground combustion, and at the same time, the cost of injecting a large amount of air at high pressure is very expensive
However, the chemical agents added by the chemical viscosity reduction method have caused serious pollution to the formation to some extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] A kind of testing method of the viscosity of high viscosity heavy crude oil that the present embodiment relates to, comprises the following steps:

[0024] (a) Extract heavy oil samples for later use;

[0025] (b) taking a certain amount of thick oil sample and placing it in the reaction vessel;

[0026] (c) add tensio-active agent in reaction vessel, fully dissolve;

[0027] (d) After stirring for a certain number of times with a glass rod, an emulsion is formed after stirring, and its viscosity is measured at a certain temperature.

[0028] In the step (b), the weight of the heavy oil sample taken is 10 grams.

[0029] In the step (b), the experimental container is a distillation flask.

[0030] In the step (c), it is fully dissolved by water.

[0031] In the step (d), stirring is carried out by a glass rod, and the number of times of stirring is 50 times.

[0032] In the step (d), the temperature during measurement is 40-60°C.

[0033] The temperature at the ti...

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PUM

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Abstract

The invention discloses a test method for viscosity of high-viscosity heavy crude oil. The method comprises: first, a heavy oil sample is extracted for standby; second, a certain amount of the heavy oil sample is placed in a reaction container; third, surfactants are added in the reaction container and dissolved fully; fourth, stirring is carried out for certain times by utilization of a glass rod, an emulsion is formed after stirring, the viscosity is measured at a certain temperature. Through the method, the viscosity of the high-viscosity heavy crude oil can be tested rapidly, the test precision is high, the test cost is low, data support is provided for exploitation of heavy oil and the test cost is lowered greatly.

Description

technical field [0001] The invention relates to a method for testing the viscosity of high-viscosity heavy crude oil. Background technique [0002] In addition to high viscosity, heavy crude oil with high viscosity also has high density. High-viscosity heavy crude oil contains less light distillate and high content of gum and bitumen. The viscosity of high-viscosity heavy crude oil changes significantly with temperature, for example, the temperature increases by 8-9. C, the viscosity can be reduced by half. Therefore, for the exploitation and transportation of high-viscosity heavy crude oil, heat is often used to reduce its viscosity, such as steam drive, thermal oil circulation, and burning oil layers. It can also be mixed with thin oil, emulsified, and added with active agent to reduce its viscosity. Crude oil with a degassed crude oil viscosity greater than 10,000 mPa·s at the reservoir temperature is called very heavy oil. [0003] High-viscosity heavy crude oil, as...

Claims

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Application Information

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IPC IPC(8): G01N11/00
Inventor 江雪连
Owner 江雪连