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Wellbore Sulfur Deposition Visualization Experimental Device and Method

An experimental device, a technology for sulfur deposition, used in analytical materials, instruments, etc.

Active Publication Date: 2016-02-03
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no device that can realize the microscopic visualization experiment of wellbore sulfur deposition

Method used

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  • Wellbore Sulfur Deposition Visualization Experimental Device and Method
  • Wellbore Sulfur Deposition Visualization Experimental Device and Method
  • Wellbore Sulfur Deposition Visualization Experimental Device and Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The wellbore sulfur deposition microscopic visualization experiment method using the wellbore sulfur deposition visualization experiment device includes the following steps:

[0041] S1, clean intermediate container 3 and all experimental pipelines thereof with alcohol and petroleum ether;

[0042] S2. Since the temperature and pressure of the gas samples retrieved from the site have changed greatly compared with the formation conditions, the phase state of the gas samples has changed. It is necessary to re-mix the samples in the sampler 6 according to the original formation conditions. According to the experiment If necessary, inject a certain proportion of gas samples into the sampler 6 according to the original formation conditions;

[0043] S3. Weigh 5g of elemental sulfur powder, put it into the intermediate container 3, and use the vacuum pump 8 to evacuate the intermediate container 3 into a vacuum; then use the booster pump to pressurize the intermediate contain...

Embodiment 2

[0052] The wellbore sulfur deposition microscopic visualization experiment method using the wellbore sulfur deposition visualization experiment device includes the following steps:

[0053] S1, clean intermediate container 3 and all experimental pipelines thereof with alcohol and petroleum ether;

[0054] S2. Since the temperature and pressure of the gas samples retrieved from the site have changed greatly compared with the formation conditions, the phase state of the gas samples has changed. It is necessary to re-mix the samples in the sampler 6 according to the original formation conditions. According to the experiment If necessary, inject a certain proportion of gas samples into the sampler 6 according to the original formation conditions;

[0055] S3. Weigh 5g of elemental sulfur powder, put it into the intermediate container 3, and use the vacuum pump 8 to evacuate the intermediate container 3 into a vacuum; then use the booster pump to pressurize the intermediate contain...

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Abstract

The invention discloses a wellbore sulfur deposition visualization experiment device, which includes a displacement system, a wellbore sulfur deposition simulation system, an image acquisition system and a waste gas treatment system. The displacement system includes a constant speed and constant pressure pump (1), an intermediate container (3), Gas injection pump (4), sampler (6), vacuum pump (8), back pressure pump (20), back pressure valve (22) and throttle valve (23), wellbore deposition simulation system including visualization device (14) , a visualization window (16), a support (28) and a multifunctional oven (29), and the image acquisition system includes a high-power microscope (15) and a computer (19); an experimental method using the experimental device is also disclosed. The beneficial effects of the invention are: it can simulate the production conditions of the wellbore, and realize the real-time observation of the whole microscopic dynamic process such as the elemental sulfur precipitation mode, elemental sulfur deposition, crystal growth microscopic dynamic process and deposition morphology in the wellbore.

Description

technical field [0001] The invention relates to the technical field of oil and gas field exploitation, in particular to a visual experiment device and method for well bore sulfur deposition. Background technique [0002] High-sulfur gas reservoirs are widely distributed in the world. With the development of oil and gas fields in my country, more and more high-sulfur or ultra-high-sulfur gas fields have been discovered in my country. my country's sour gas reservoirs are mainly distributed in the Ordos Basin, Sichuan Basin, Bohai Bay Basin and Tarim Basin. High-sulfur gas reservoirs are a special type of gas reservoirs. In high-sulfur gas reservoirs, H 2 The existence of S makes its physical properties quite different from those of conventional natural gas. The biggest difference between high-sulfur gas reservoirs and conventional gas reservoirs is that in the process of gas well production, with the change of temperature and pressure, phases will occur. Change, elemental s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/04
Inventor 刘建仪代建伟贾春生张广东李牧
Owner SOUTHWEST PETROLEUM UNIV
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