High-temperature high-pressure multifunctional core sulfur deposition test device and method

Abstract

The invention discloses high-temperature high-pressure multifunctional core sulfur deposition test device and method. The sulfur deposition test device comprises a displacement system, a formation condition analog system, a data acquisition system and a data processing system. The sulfur deposition test method comprises the following steps of: constructing a test environment, measuring the sulfurelement deposition on line, observing the sulfur element deposition process on line, and testing the change of permeability of a rock sample before and after sulfur deposition and the like. The invention has the beneficial effects of realizing the visual display of a true core sulfur deposition process, the real-time online measurement of the sulfur deposition and dynamic calculation of core permeability change caused by sulfur deposition and accurately and dynamically evaluating the damage severity of permeability of a reservoir stratum, caused by sulfur deposition in real time, and has the advantages of high degree of automation, good safety, high accuracy, high temperature and high pressure resistance, strong corrosion resistance and the like.

Description

technical field [0001] The invention relates to a sulfur deposition testing device and method, in particular to a high-temperature, high-pressure multifunctional rock core sulfur deposition testing device and method. Background technique [0002] High-sulfur gas reservoirs are widely distributed around the world, such as the Murray Franklin gas field in Texas, the Bentz / Bearberry gas field in Alberta, Canada, the Panther River gas field, the Black / Josephine gas field in Mississippi, the Cox gas field, and the continental facies in the Bohai Bay Basin in my country. Zhaolanzhuang Gas Field in North China, Luojia Gas Field in Shengli Oilfield, Feixianguan Formation Gas Pool in Dukouhe Gas Field in Sichuan Basin, Feixianguan Formation Gas Pool in Luojiazhai Gas Field, Feixianguan Formation Gas Pool in Puguang Gas Field, Tieshanpo Gas Field in the Sichuan Basin Gas reservoirs in the Feixianguan Formation of the Gas Field, the Feixianguan Formation of the Longmen Gas Field, the Fei...

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Problems solved by technology

B.E.Roberts (1996) and Nacholas Hands (2002) studied the deposition characteristics of elemental sulfur in the Foothills sour gas field in the Rocky Mountains of Shell Canada, even if the sulfur content is less than 2g / m 3 "Sulphur plugging" will also occur in the gas wells within a few months, resulting in the failure of normal production

It can be seen that the prediction and evaluation technology of sulfur deposition is very important for the development of high-sulfur gas reservoirs. The research is almost at a blank stage, and due to the large difference between the experimental conditions of sulfur deposition evaluation and the actual formation seepage conditions, the existing experimental testing methods cannot accurately and dynamically evaluate the damage degree of sulfur deposition to the permeability of reservoir rock samples in real time

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