Cleaning agent applicable to viscous sulfur-bearing scale in high sulfur gas field gathering and transportation system

Abstract

The invention relates to a cleaning agent applicable to viscous sulfur-bearing scale in a high sulfur gas field gathering and transportation system. The cleaning agent comprises a liquid phase: 5-8 parts of non-ionic surfactant, 1-2 parts of accelerant, 4-8 parts of dodecyl dimethyl benzyl ammonium chloride, 1.5-2.5 parts of penetrant JFC, and a solid phase: 5-10 parts of sodium hydroxide, 10-15 parts of sodium carbonate, 3-5 parts of sodium sulfide and 15-20 parts of sodium metasilicate pentahydrate. The cleaning agent mainly adopts inorganic substances, and can efficiently dissolve and clean viscous sulfur-bearing obstructions in the high sulfur gas field gathering and transportation system at a lower operating temperature. The cleaning agent adopts the inorganic substances as principal ingredients; other assistants are water-soluble, nontoxic, harmless and involatile substances; at the same time, the corrosivity to an equipment material and a sealing element material is controlled within a relevant national standard scope; the cleaning agent can be used for site operation safely.

Description

technical field [0001] The invention relates to a cleaning agent in a gas field gathering and transportation system, more specifically, the invention relates to a cleaning agent suitable for viscous sulfur-containing scale in a high-sulfur gas field gathering and transportation system. Background technique [0002] In the process of gas production in high-sulfur gas fields, a large amount of formation reverse discharge, elemental sulfur, wellhead additives, corrosion inhibitors and other substances will be deposited in the ground gathering and transportation system, forming a viscous sulfur-containing scale. These scales are deposited in various types of separation equipment and process pipelines in large quantities, resulting in equipment volume reduction, pipeline blockage, and equipment body material corrosion, which greatly affects the normal operation of the gas field gathering and transportation system. risk, the gathering and transportation system needs to be cleaned ...

AI Technical Summary

Problems solved by technology

[0018] The present invention aims to solve the problem that existing cleaning chemicals or sulfur dissolving agents used in the gathering and transportation system of high-sulfur gas fields are toxic, flammable and explosive, and have a high service temperature, which can only act on elemental sulfur and cannot be adapted to the gathering and transportation system. The problem of poor cleaning effect due to the complex component scale deposited, provides a cleaning agent suitable for viscous sulfur-containing scale in the gathering and transportation system of high-sulfur gas fields

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