Method for preparing hydrogen sulfide corrosion inhibitor used in offshore oilfield produced oil pipeline

A technology for offshore oil fields and oil production, which is applied in chemical instruments and methods, drilling compositions, etc., and can solve problems such as poor corrosion inhibition performance of hydrogen sulfide corrosion inhibitors.

Inactive Publication Date: 2015-04-08
刘旸 +14
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: the corrosion inhibition performance of the hydrogen sulfide corrosion inhibitor used in the offshore oilfield production pipeline is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step 1, mix 10Kg of imidazoline compound, SPAN-80 0.3Kg, rosin amine polyoxyethylene ether 0.3Kg, sodium alginate 0.2~Kg, methylpropanediol 0.5Kg, and ethanol 20Kg to obtain mixture I. The mixing process is Carry out at 700r / min speed, mixing time 20min;

[0022] Step 2, mix sodium chromate 0.3Kg, sodium nitrite 0.5Kg, sodium pyrrolidone carboxylate 0.4Kg, ethyl hydroxybenzoate 1Kg, zinc borate 0.2~Kg, magnesium borate 0.3Kg, dipentaerythritol 1Kg, hydrogenated soybean lecithin 0.6Kg, 6Kg of triethylamine, and 5Kg of propanol were mixed uniformly to obtain mixture II. The mixing process was carried out at a speed of 800r / min, and the mixing time was 20min;

[0023] Step 3, mix mixture I, mixture II, sodium benzoate 0.3Kg, ammonium benzoate 0.6Kg, sodium gluconate 0.2Kg, sodium acrylate 0.2Kg, thiosemicarbazide 1Kg, carboxymethylchitooligosaccharide vanillin Schiff base 1Kg After mixing evenly, a hydrogen sulfide corrosion inhibitor is obtained. The mixing process is ca...

Embodiment 2

[0026] Step 1, mix 12Kg of imidazoline compound, 0.6Kg of SPAN-80, 0.6Kg of rosin amine polyoxyethylene ether, 0.4Kg of sodium alginate, 0.8Kg of methyl propylene glycol, and 30Kg of ethanol to obtain mixture I. The mixing process is in Carry out at 1000r / min speed, mixing time 30min;

[0027] Step 2, 0.6Kg of sodium chromate, 1Kg of sodium nitrite, 0.8Kg of sodium pyrrolidone carboxylate, 2Kg of ethyl hydroxybenzoate, 0.3Kg of zinc borate, 0.6Kg of magnesium borate, 2Kg of dipentaerythritol, and 0.9Kg of hydrogenated soybean lecithin , triethylamine 12Kg, propanol 12Kg mix uniformly, obtain mixture II, the mixing process is to carry out under the rotating speed of 1200r / min, mixing time 30min;

[0028] Step 3, mix mixture I, mixture II, sodium benzoate 0.6Kg, ammonium benzoate 0.8Kg, sodium gluconate 0.4Kg, sodium acrylate 0.6Kg, thiosemicarbazide 2Kg, carboxymethylchitooligosaccharide vanillin Schiff base 2Kg After mixing evenly, a hydrogen sulfide corrosion inhibitor is ob...

Embodiment 3

[0031] The 1st step, mix imidazoline compound 11Kg, SPAN-80 0.4Kg, rosin amine polyoxyethylene ether 0.4Kg, sodium alginate 0.3Kg, methyl propylene glycol 0.7Kg, ethanol 24Kg, obtain mixture I, mixing process is in Carry out at 800r / min speed, mixing time 25min;

[0032] Step 2, mix sodium chromate 0.5Kg, sodium nitrite 0.7Kg, sodium pyrrolidone carboxylate 0.7Kg, ethyl hydroxybenzoate 1.5Kg, zinc borate 0.24Kg, magnesium borate 0.4Kg, dipentaerythritol 1.5Kg, hydrogenated soybean egg Phospholipid 0.8Kg, triethylamine 10Kg, and propanol 8Kg were mixed evenly to obtain mixture II. The mixing process was carried out at a speed of 900r / min, and the mixing time was 25min;

[0033]Step 3, mix mixture I, mixture II, sodium benzoate 0.5Kg, ammonium benzoate 0.7Kg, sodium gluconate 0.3Kg, sodium acrylate 0.4Kg, thiosemicarbazide 1.5Kg, carboxymethylchitooligosaccharide vanillin Schiff base After 1.5Kg is mixed evenly, the hydrogen sulfide corrosion inhibitor is obtained. The mixing p...

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PUM

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Abstract

The invention relates to a method for preparing a hydrogen sulfide corrosion inhibitor used in an offshore oilfield produced oil pipeline and belongs to the technical field of petroleum additives. The method comprises the following steps: uniformly mixing an imidazoline compound, SPAN-80, rosin amine polyoxylethylene ether, sodium alga acid, methyl propanediol and ethanol, thereby obtaining a mixture I; uniformly mixing sodium chromate, sodium nitrite, sodium pyrrolidone carboxylate, hydroxyl ethyl benzoate, zinc borate, magnesium borate, dipentaerythritol, hydrogenated soya bean lecithin, triethylamine and propyl alcohol, thereby obtaining a mixture II; and uniformly mixing the mixture I, the mixture II, sodium benzoate, ammonium benzoate, sodium gluconate, sodium acrylate, thiosemicarbazide, carboxymethyl chito-oligosaccharide vanillic aldehyde Schiff base, thereby obtaining the hydrogen sulfide corrosion inhibitor. The corrosion inhibitor provided by the invention can effectively achieve a corrosion inhibition effect on the hydrogen sulfide in the pipeline under high salt conditions.

Description

Technical field [0001] The present invention involves a preparation method for a hydrogen sulfide corrosion agent used in the oil pipeline of the maritime oil pipeline, which belongs to the field of petroleum additives. Background technique [0002] Petroleum natural gas pipeline: refers to petroleum (including crude oil, refined oil), natural gas pipelines and its auxiliary facilities (referred to as pipeline facilities), including oil and gas field process pipelines (including integration, storage transportation, initial processing and gas injection pipelines) and long -term transmission (Oil, gas transmission) pipeline.Pipeline transportation of oil and natural gas has the advantages of efficient and low consumption. However, because it has high energy, high pressure, flammable and explosive, toxic and harmful, continuous operations, long chain long surface, and complex environment, etc., it determines the extremely importance of its safety managementEssence [0003] In recent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/04
CPCC09K8/54C23F11/08C09K2208/32C09K2208/20
Inventor 孟红琳
Owner 刘旸
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