A kind of preparation method of hydrogen sulfide corrosion inhibitor used in offshore oil field production 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: 2017-06-16
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] Step 1, mix evenly 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, the 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 mix...

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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 oil production pipelines in offshore oil fields, and belongs to the technical field of petroleum additives. The method comprises the following steps: uniformly mixing imidazoline compound, SPAN-80, rosin amine polyoxyethylene ether, sodium alginate, methyl propylene glycol, and ethanol to obtain mixture I; mixing sodium chromate, sodium nitrite, sodium pyrrolidone carboxylate, Ethyl hydroxybenzoate, zinc borate, magnesium borate, dipentaerythritol, hydrogenated soybean lecithin, triethylamine, and propanol are mixed uniformly to obtain mixture II; mixture I, mixture II, sodium benzoate, ammonium benzoate, and sodium gluconate After sodium acrylate, thiosemicarbazide and carboxymethyl chitosan oligosaccharide vanillin Schiff base are uniformly mixed, a hydrogen sulfide corrosion inhibitor is obtained. The corrosion inhibitor provided by the invention can more effectively inhibit hydrogen sulfide corrosion in pipelines under high-salt conditions.

Description

technical field [0001] The invention relates to a method for preparing a hydrogen sulfide corrosion inhibitor used in oil production pipelines in offshore oil fields, and belongs to the technical field of petroleum additives. Background technique [0002] Oil and gas pipelines: refers to oil (including crude oil, refined oil), natural gas pipelines and their ancillary facilities (referred to as pipeline facilities), including oil and gas field process pipelines (including gathering and transportation, storage and transportation, primary processing and gas injection pipelines) and long-distance transportation ( oil, gas) pipelines. Pipeline transportation of oil and natural gas has the advantages of high efficiency and low consumption, but its safety management is extremely important due to its characteristics of high energy and high pressure, flammable and explosive, toxic and harmful, continuous operation, long chain length and complex environment. . [0003] In recent ye...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/04
CPCC09K8/54C23F11/08C09K2208/32C09K2208/20
Inventor 刘旸贾超王翠孟昕宇宫晓荟鲁延琳闫建芬宋晓丽王学涛高慎帅侯磊马吉晶邵强曹延磊石杰铭
Owner 刘旸
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