CN102698576B - Sulfur removal agent suitable for production of oil-gas well - Google Patents
Sulfur removal agent suitable for production of oil-gas well Download PDFInfo
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- CN102698576B CN102698576B CN 201210177844 CN201210177844A CN102698576B CN 102698576 B CN102698576 B CN 102698576B CN 201210177844 CN201210177844 CN 201210177844 CN 201210177844 A CN201210177844 A CN 201210177844A CN 102698576 B CN102698576 B CN 102698576B
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Abstract
The invention relates to a sulfur removal agent suitable for the production of an oil-gas well. The sulfur removal agent comprises the following components in percentage by mass: 10 to 25 percent of hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine, 5 to 20 percent of alcohol amine, 5 to 20 percent of small molecular alcohol and the balance of water. The alcohol amine is one or a mixture of more than two of monoethanolamine, ethyleneglycol amine, diisopropanolamine, methyldiethanolamine and triethanolamine; and the small molecular alcohol is one or a mixture of more than two of methanol, ethanol and propanol. The sulfur removal agent has a simple formula, can be soluble with water, and can effectively reduce the content of hydrogen sulfide in crude oil or natural gas; simultaneously, products generated by the sulfur removal agent and the hydrogen sulfide are water-soluble, and cannot block a mineshaft and influence the normal production of the oil-gas well; and the sulfur removal agent can achieve effects at the temperature of 30 to 120 DEG C and can be quickly reacted with the hydrogen sulfide.
Description
Technical field
The present invention relates in the Oil/gas Well production process of oil-gas field development field, be the processing of security consideration to hydrogen sulfide.
Technical background
In the development process of Oil ﹠ gas field in sulfur, owing to the existence of hydrogen sulfide, corrosion and the damage problem of oil pipeline, instrument and equipment etc. usually can occur.Simultaneously, hydrogen sulfide also seriously threatens personal safety because having severe toxicity.
Hydrogen sulfide is the gas that a kind of height stimulates, and has strong rotten egg smell, and the existence of hydrogen sulfide not only can cause equipment and corrosion of piping, catalyst poisoning in the Oil/gas Well production process, and can the serious threat personal safety.At present, both at home and abroad the method for Treatment of Hydrogen Sulfide Waste Gas is a lot, carries out desulfurization according to its faintly acid and strong reducing property and can be divided into dry method and wet method.Dry method is to utilize reproducibility and the combustibility of hydrogen sulfide, comes desulfurization or directly burning with solid oxidizer or adsorbent, and wet method is divided into liquid absorption method and absorbs oxidizing process two classes by its used different desulfurizing agents.The chemical absorption method that utilizes alkaline solution and the Physical Absorption method of utilizing organic solvent and physical chemistry absorption process are arranged in the liquid absorption method.Absorbing oxidizing process mainly utilizes various oxidants, catalyst to carry out desulfurization.These process for sulfur removal all need to add a large amount of sulfur eliminations or increase extras, increase cost.
The simultaneously issuing and implementation of the environmental legislation of increasingly stringent will be so that main flow efficient, pollution-free, that resource becomes the sulfur removal technology development.The concentration of Air Hydrogen Sulfide will stimulate tracheae, cause conjunctivitis that concentration of hydrogen sulfide is less than 2ppm in the natural gas that requires at present and the crude oil greater than 50ppm.But the used alkaline sulfur elimination in oil field will reach the standard of 2ppm, need to add more sulfur elimination, and these alkali formula sulfur eliminations generates sediment with hydrogen sulfide effect meeting, and the obstruction gas channel affects the production of Oil/gas Well.So the development effectively sulfur elimination of absorbing hydrogen sulphide is necessary.
Summary of the invention
The object of the present invention is to provide the sulfur elimination that is applicable in the Oil/gas Well production, this sulfur elimination can be removed the hydrogen sulfide in the Oil/gas Well fast, and the product water soluble that generates does not simultaneously affect the normal production of Oil/gas Well.
For reaching above-mentioned technical purpose, the invention provides following technical scheme.
Hydrogen sulfide is sour gas, can react with alkaline matter, nucleus is organic base among the present invention, this organic base can be under normal condition fast and hydrogen sulfide generation neutralization reaction, generate water-soluble sulfurous organic compound and water, dispose crude oil or natural in hydrogen sulfide.
Be applicable to the sulfur elimination in the Oil/gas Well production, formed according to mass ratio by following component:
The ethoxy perhydro-s-triazine, 10-25%,
Hydramine, 5-20%,
Small molecular alcohol, 5-20%,
All the other are water.
Described hydramine is wherein one or more mixtures of MEA, ethylene glycol amine, diisopropanolamine (DIPA), methyl diethanolamine and triethanolamine.
Described small molecular alcohol is wherein one or more mixtures of methyl alcohol, ethanol and propyl alcohol.
Concrete using method: the sulfur elimination of invention directly adds or together adds in the pit shaft with other medicaments.
Compared with prior art, sulfur elimination prescription of the present invention is simple, can dissolve each other with water, can effectively reduce the hydrogen sulfide in crude oil or the natural gas, can make hydrogen sulfide amount in crude oil or the weather less than 2ppm, simultaneously sulfur elimination is water-soluble with the product of hydrogen sulfide generation, can not stop up pit shaft, affect the normal production of Oil/gas Well; This sulfur elimination can work in 30-120 ℃ of temperature range, and is swift in response with hydrogen sulfide.
The specific embodiment
One, the preparation of sulfur elimination
Embodiment 1
In the 500ml three-neck flask, put into 20g methyl alcohol, add again 30g ethoxy perhydro-s-triazine and 20g triethanolamine, behind the stirring 30min, add 130g water, stir and namely get product after 10min mixes.
Embodiment 2
In the 500ml three-neck flask, put into 10g ethanol, add again 50g ethoxy perhydro-s-triazine and 10g methyl diethanolamine, behind the stirring 20min, add 130g water, stir and namely get product after 10min mixes.
Embodiment 3
In the 500ml three-neck flask, put into 40g methyl alcohol, add again 20g ethoxy perhydro-s-triazine and 40g MEA, behind the stirring 40min, add 100g water, stir and namely get product after 10min mixes.
Embodiment 4
In the 500ml three-neck flask, put into 32g ethanol, add again 36g ethoxy perhydro-s-triazine and 24g diisopropanolamine (DIPA), behind the stirring 30min, add 108g water, stir and namely get product after 10min mixes.
Embodiment 5
In the 500ml three-neck flask, put into the 40g propyl alcohol, add again 44g ethoxy perhydro-s-triazine and 38 diethanol amine, behind the stirring 30min, add 78g water, stir and namely get product after 15min mixes.
Embodiment 6
In the 500ml three-neck flask, put into the 16g propyl alcohol, add again 24g ethoxy perhydro-s-triazine and 14g methyl diethanolamine, behind the stirring 20min, add 146g water, stir and namely get product after 10min mixes.
Embodiment 7
In the 500ml three-neck flask, put into 18g methyl alcohol and 22g ethanol, add again 50g ethoxy perhydro-s-triazine, 16g triethanolamine and 18g MEA, behind the stirring 40min, add 76g water, stir and namely get product after 20min mixes.
Embodiment 8
In the 500ml three-neck flask, put into 22g methyl alcohol and 19g propyl alcohol, add again 34g ethoxy perhydro-s-triazine, 12g diethanol amine, 10g diisopropanolamine (DIPA) and 13g methyl diethanolamine, after stirring 40min, add 90g water, stir and namely get product after 20min mixes.
Embodiment 9
In the 500ml three-neck flask, put into 8g methyl alcohol, 12g ethanol and 5g propyl alcohol, add again 36g ethoxy perhydro-s-triazine, 10g MEA, 12g triethanolamine and 8g diisopropanolamine (DIPA), after stirring 40min, add 109g water, stir and namely get product after 20min mixes.
Two, the performance test of sulfur elimination
The sulfur elimination sulfur limitation effect of embodiment 1-9 preparation according to document " Zhao Shukai etc. several drilling fluids remove the research of hydrogen sulfide effect, Drilling and completion fluids, in January, 2008, the 1st phase of the 25th volume: 73-75 with sulfur elimination " in the experimental technique of record carry out.
Get respectively and put into test bottle after the sulfur elimination of 0.5g embodiment 1-9 and 50g water mix, the control concentration of hydrogen sulfide is 200ppm(v/v) flow velocity is 200L/h, monitoring port of export concentration of hydrogen sulfide.Experimental result sees Table 1.
Table 1 embodiment 1-9 compares except the hydrogen sulfide effect
The contrast sample is got 50g and is contained 3% basic zinc carbonate suspension in test bottle for sulfur elimination basic zinc carbonate commonly used, and control concentration of hydrogen sulfide is 200ppm(v/v) flow velocity is 200L/h, monitors port of export concentration of hydrogen sulfide.Detector concentration is 10ppm behind the 2min, greater than 20ppm, in the test bottle yellow mercury oxide is arranged after the reaction behind the 50min.
Claims (1)
1. be applicable to the sulfur elimination in the Oil/gas Well production, formed according to mass ratio by following component:
The ethoxy perhydro-s-triazine, 10-25%,
Hydramine, 5-20%,
Small molecular alcohol, 5-20%,
All the other are water;
Described hydramine is wherein one or more mixtures of MEA, ethylene glycol amine, diisopropanolamine (DIPA), methyl diethanolamine and triethanolamine;
Described small molecular alcohol is wherein one or more mixtures of methyl alcohol, ethanol and propyl alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201210177844 CN102698576B (en) | 2012-06-01 | 2012-06-01 | Sulfur removal agent suitable for production of oil-gas well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210177844 CN102698576B (en) | 2012-06-01 | 2012-06-01 | Sulfur removal agent suitable for production of oil-gas well |
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| CN102698576A CN102698576A (en) | 2012-10-03 |
| CN102698576B true CN102698576B (en) | 2013-04-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017118894A1 (en) * | 2016-01-08 | 2017-07-13 | Dorf Ketal Chemicals (India) Private Limited | Nitrogen based hydrogen sulfide scavengers and method of use thereof |
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| CN110776956A (en) * | 2019-06-13 | 2020-02-11 | 大庆渤基科技开发有限公司 | Desulfurization synergist and preparation method and application thereof |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2666022C (en) * | 2009-05-19 | 2011-04-12 | Sertsai A. Seyoum | Sour natural gas sparger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017118894A1 (en) * | 2016-01-08 | 2017-07-13 | Dorf Ketal Chemicals (India) Private Limited | Nitrogen based hydrogen sulfide scavengers and method of use thereof |
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