Sulfur-dissolving agent evaluation device and method of using same

Abstract

The invention discloses a sulfur dissolving agent evaluation device and a method using the same, and belongs to the technical field of gas field development evaluation. The sulfur dissolving agent evaluation device comprises a reaction kettle, a sulfur dissolving reactor, a gas supply device and a temperature control heater; a liquid inlet and a liquid outlet are formed in the reaction kettle, and the reaction kettle is used for containing a sulfur dissolving reagent; the sulfur dissolving reactor is used for containing and filtering sulfur samples, and the sulfur dissolving reactor is fixed inside an inner cavity of the reaction kettle; the gas supply device is connected with the reaction kettle and used for supplying gas with preset pressure into the reaction kettle so as to simulate the gas environment and pressure environment in the gas recovery well bottom and a production set pipeline; the temperature control heater is connected with the reaction kettle and used for heating the sulfur dissolving reagent; during testing, the sulfur dissolving reagent enters the inner cavity of the reaction kettle through the liquid inlet and then makes contact with the sulfur samples in the sulfur dissolving reactor, a chemical reaction is started, after scheduled time, the sulfur dissolving reagent inside the reaction kettle is drained through the liquid outlet so as to separate the sulfur dissolving reagent from the sulfur samples, and finally the sulfur dissolving rate of the sulfur dissolving reagent is obtained through a subtraction method.

Description

technical field [0001] The invention relates to the technical field of gas field development and evaluation, in particular to a sulfur dissolving agent evaluation device and a method for using the same. Background technique [0002] With the development of sour gas fields, the problem of elemental sulfur deposition has become increasingly prominent. After the gas well is put into production, due to the continuous reduction of formation pressure, when the gas flow reaches or exceeds the sulfur saturation, elemental sulfur will be precipitated and deposited from the gas flow, resulting in a decrease in formation permeability and a decrease in gas well productivity, resulting in production gathering and transportation. Pipeline blockage, in severe cases, will lead to gas well shutdown. [0003] In view of the above situation, the solution usually adopted in the industry is to add sulfur-dissolving agent. The sulfur-dissolving agent includes physical solvents and chemical solve...

AI Technical Summary

Problems solved by technology

However, the existing sulfur dissolving agent evaluation device has the following problems: (1) It is impossible to accurately simulate the high temperature, high pressure and hydrogen sulfide-containing gas corrosion environment at the bottom of the well and in the production gathering pipeline; (2) after the reaction is completed, the separation , When cleaning and filtering, it is necessary to introduce a filter device, the process is cumbersome and it is easy to cause errors during the transfer process

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