Organic composite efficient sulfur removal agent for oil-gas field and preparation method and application of organic composite efficient sulfur removal agent

Abstract

The invention discloses an organic composite efficient sulfur removal agent for oil-gas field and preparation method and application of the organic composite efficient sulfur removal agent. The sulfur removal agent is characterized in that water serves a solvent and comprises an alcohol amine component A, an alcohol amine component B, a triazine derivative, inhibiter, synergist and low-molecular mass alcohols; the alcohol amine component A refers to methyldiethanolamine, the alcohol amine component B refers to one of triethanolamine and diethanolamine or a mixture of triethanolamine and diethanolamine; triazine derivative refers to hexahydro-1,3,5-tris-s-triazine; the inhibiter refers to seventeen alkenyl amide ethyl imidazoline; the synergist refers to sulfolane; the low-molecular mass alcohols refer to one of ethylene glycol and glycerol or a mixture of ethylene glycol and glycerol. The sulfur removal agent has the advantages of good selectivity on sulfuretted hydrogen, small dosage, quick effect, high sulfur removal efficiency, no corrosion of steel, stable product performance, difficulty in heating decomposition, capability of being biodegradable and the like; sulfide like sulfuretted hydrogen existing in extraction of an oil-gas well can be effectively removed or reduced to safety threshold value range in content, corrosion of sulfide on pipelines and equipment is inhibited, and safety on the equipment and operation personnel is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field chemistry, and in particular relates to an organic composite high-efficiency desulfurizer for oil and gas fields, which is used to remove H present in the production process of oil and gas wells. 2 S and other sulfides, thereby reducing the corrosion of sulfides on oil and gas pipelines and equipment, and ensuring the safety of oil refining and oil and gas extraction personnel. In addition, the present invention also provides the preparation method and application of the sulfur removing agent. Background technique [0002] Sulfur-containing compounds are ubiquitous in oil and gas, mainly hydrogen sulfide (H 2 S), mercaptan (RSH), thioether (RSSR), thiophene sulfur and S, S 2- , SO 4 2- Wait. The main sources of these sulfur-containing compounds are: one is the formation, which is brought to the surface with oil and gas exploitation; the other is the reduction of sulfate-reducing bac...

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Problems solved by technology

The existence of a large amount of sulfide will cause strong corrosion to equipment, pipelines, storage and transportation facilities in the process of oil exploitation, gathering and refining, and cause huge economic losses, and even occur due to H 2 S leakage caused staff poisoning accidents, which seriously threatened the personal safety of on-site workers

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