Sulfur deposition device based on magnetic suspension balance

Abstract

The invention discloses a sulfur deposition device based on a magnetic suspension balance. The sulfur deposition device comprises a displacement system, a stratum condition simulation system, a magnetic suspension balance measuring system and a data collecting and processing system. The sulfur deposition device based on the magnetic suspension balance has the beneficial effects that a high-temperature, high-pressure and high-sulfur-content stratum environment can be truly simulated, the measuring accuracy of the sulfur deposit amount is greatly improved, the viscosity, bulk coefficients and deviation factors of gas are calculated in real time, and the dynamic change of the rock core permeability due to sulfur deposition is measured online in real time. The sulfur deposition device based on the magnetic suspension balance has the advantages of good security, high measuring accuracy, high temperature resistance, high pressure resistance, strong corrosion resistance and the like and further has the important significance to the evaluation of the dynamic influence of the sulfur deposition of a high sulfur gas reservoir to the exploitation.

Description

technical field [0001] The invention relates to a sulfur deposition testing device based on a magnetic levitation balance. Background technique [0002] High-sulfur gas reservoirs are widely distributed in the world, and the Northeast Sichuan Basin in my country is rich in resources, for example, Dukouhe, Tieshanpo, Puguang, Longgang, Yuanba, Luojiazhai, Longwangmiao and other high-sulfur Sulfur gas deposits. As the formation pressure and temperature continue to drop, elemental sulfur will be precipitated from the sulfur-carrying gas in the form of monomers, and will deposit in the pore throats of the reservoir rocks, blocking the seepage channels of natural gas and reducing the effective pore space and permeability of the formation. Since sulfur deposition is irreversible under certain conditions, it will be difficult to restore the original seepage capacity once sulfur is deposited. Sulfur deposition is a world-class problem that inevitably exists and must be solved durin...

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Problems solved by technology

For example, in 2002, "sulfur plugging" occurred in the Foothills sour gas field in the Rocky Mountains region of Shell Canada within a few months, which prevented normal production

[0003] It can be seen that the prediction and evaluation technology of sulfur deposition is very important for the development of high-sulfur gas reservoirs, but at present, the solubility change of elemental sulfur in natural gas tested by PVT tube is commonly used to estimate the amount of sulfur deposition. It is almost at a blank stage, and due to the large difference between the experimental conditions in the sulfur deposition evaluation laboratory and the real formation seepage conditions, coupled with the lack of measurement accuracy of existing equipment, large measurement errors or the inability to measure the amount of sulfur deposition at all, the existing experiments The test device and method cannot accurately and dynamically evaluate the amount of sulfur deposition and the damage degree of sulfur deposition to the permeability of reservoir rock samples in real time

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