A high-precision wellbore sulfur deposition influencing factors visual testing device and method

Abstract

The invention discloses a high-precision wellbore sulfur deposition influencing factor visualization testing device and method, which comprises a supply system, a wellbore condition simulation system, a magnetic levitation balance measurement system, a visualized data acquisition system and a tail gas treatment system. The beneficial effects of the present invention are: the device can truly simulate the temperature and pressure of any type of wellbore, any position, and different phases of sulfur, and qualitatively measure by changing the temperature, pressure, deposition time, well inclination angle, hydrogen sulfide content and water content Analyze the influencing factors of sulfur deposition, greatly improve the test accuracy of sulfur deposition amount and deposition rate, and observe the precipitation and deposition dynamics of sulfur in the wellbore in real time through a high-power microscope; when the sulfur element is suspended in the wellbore, the sulfur in different states can be calculated The critical suspension velocity and the minimum sulfur-carrying gas production. The invention has the advantages of good safety, high measurement accuracy, high temperature and high pressure resistance, strong corrosion resistance, etc., and is of great significance for studying the sulfur deposition law in the shaft of a high-sulfur gas well.

Description

technical field [0001] The invention relates to the technical field of oil and gas field exploitation, in particular to a high-precision wellbore sulfur deposition influencing factor visualization testing device and method. Background technique [0002] my country is rich in high-sulfur gas reservoir resources, for example, the Zhaolanzhuang gas field in North China in the continental strata of the Bohai Bay Basin, the Luojia gas field in the Shengli Oilfield, the Feixianguan Formation gas reservoir in the Dukouhe gas field in the marine strata of the Sichuan Basin, and the Feixian gas field in the Luojiazhai gas field. Guan Formation Gas Pool, Puguang Gas Field Feixianguan Formation Gas Pool, Tieshanpo Gas Field Feixianguan Formation Gas Pool, Longmen Gas Field Feixianguan Formation Gas Pool, Gaofengchang Gas Field Feixianguan Formation Gas Pool, Zhongba Gas Field Leikoupo Formation Gas Pool The gas reservoir and the Jialingjiang Formation gas reservoir in the Wolonghe gas fi...

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Problems solved by technology

[0004] However, at present, the quantitative measurement of sulfur deposition in wellbore is still in a blank stage. The existing indoor experimental conditions are quite different from the real wellbore flow conditions. Generally, the fluid flow in deviated wells and horizontal wells cannot be simulated. The influence of phase sulfur is also lack of consideration, and the measurement accuracy of the existing equipment is insufficient, the measurement error is large, or the amount of sulfur deposition cannot be measured at all, and the critical suspension velocity and minimum sulfur-carrying gas volume of sulfur particles or sulfur droplets in the wellbore cannot be measured. , at the same time, it is impossible to visually observe the precipitation and deposition dynamics of sulfur in the wellbore

In summary, the existing experimental testing systems and methods cannot measure the amount of sulfur deposition, deposition velocity, critical suspension velocity, and minimum sulfur-carrying gas in the wellbore accurately and dynamically in real time, nor can they directly observe the precipitation and deposition form of sulfur to obtain the sulfur content in the wellbore. deposition law

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