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Method for removing H2S in crude oil

A crude oil and solid technology, applied in the direction of earth drilling, mining fluid, wellbore/well parts, etc., can solve the problems of high labor intensity, large volume of dosing, poor effect, etc., and achieve less dosing and effective concentration High, convenient dosing effect

Active Publication Date: 2018-10-12
西安凯尔文石化助剂制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The liquid method has the disadvantages of large dosing volume, high labor intensity, and poor effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] S1, extract 35 parts by mass of N,N-diethylethanolamine, 30 parts by mass of sodium carbonate, 20 parts by mass of triethanolamine, 5 parts by mass of EDTA, and polyacrylamide of 10 parts by mass, respectively Pulverizing, and mixing and stirring the above pulverized materials evenly;

[0025] S2. Add the uniformly mixed mixture into the granulator, prepare it into a spherical shape, and obtain a solid desulfurization rod;

[0026] S3. When in use, add a spherical solid desulfurization rod into the oil well. Porous channels for crude oil and natural gas are formed between the solid desulfurization rods, so that the solid desulfurization rods are in contact with crude oil, and the desulfurizer and the H in the oil and water 2 S reacts, and this reaction will not generate sediment to block the outflow of oil or natural gas in the formation. The product is soluble in water and crude oil, and the hazard of hydrogen sulfide in crude oil can be eliminated when it is extracte...

Embodiment 2

[0028] S1, extract 25 parts by mass of N,N-diethylethanolamine, 30 parts by mass of sodium carbonate, 30 parts by mass of triethanolamine, 7 parts by mass of EDTA, and polyacrylamide of 8 parts by mass, respectively Pulverizing, and mixing and stirring the above pulverized materials evenly;

[0029] S2. Add the uniformly mixed mixture into the granulator, prepare it into a spherical shape, and obtain a solid desulfurization rod;

[0030] S3. When in use, add a spherical solid desulfurization rod into the oil well. Porous channels for crude oil and natural gas are formed between the solid desulfurization rods, so that the solid desulfurization rods are in contact with crude oil, and the desulfurizer and the H in the oil and water 2 S reacts, and this reaction will not generate sediment to block the outflow of oil or natural gas in the formation. The product is soluble in water and crude oil, and the hazard of hydrogen sulfide in crude oil can be eliminated when it is extracted...

Embodiment 3

[0032] S1. Extract 20 parts by mass of N,N-diethylethanolamine, 20 parts by mass of sodium carbonate, 20 parts by mass of triethanolamine, 5 parts by mass of EDTA, and 8 parts by mass of polyacrylamide, respectively Pulverizing, and mixing and stirring the above pulverized materials evenly;

[0033] S2. Add the uniformly mixed mixture into the granulator, prepare it into a spherical shape, and obtain a solid desulfurization rod;

[0034] S3. When in use, add a spherical solid desulfurization rod into the oil well. Porous channels for crude oil and natural gas are formed between the solid desulfurization rods, so that the solid desulfurization rods are in contact with crude oil, and the desulfurizer and the H in the oil and water 2 S reacts, and this reaction will not generate sediment to block the outflow of oil or natural gas in the formation. The product is soluble in water and crude oil, and the hazard of hydrogen sulfide in crude oil can be eliminated when it is extracted...

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PUM

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Abstract

The invention discloses a method for removing H2S in crude oil. A desulfurization agent is made into a plurality of solid desulfurization rods to be added into a well from an inlet, thus a porous channel for the crude oil and natural gas is formed between the solid desulfurization rods, and when the crude oil is out of the well, the solid desulfurization rods make contact with the crude oil and react with the H2S in the crude oil. The raw materials of the solid desulfurization rods comprise N, N-diethyl ethylene diamine, sodium carbonate, triethanolamine, EDTA and polyacrylamide. According tothe method, the concentration of the solid agent is high, dissolution is slow, the action time of the agent is long, removing of the hydrogen sulfide is rapid, dosing is convenient, and the H2S can beremoved before the crude oil is extracted out of the well without additionally arranging other devices in the oil well.

Description

technical field [0001] The invention relates to the field of petroleum refining and petrochemical production, in particular to a kind of H in crude oil 2 S elimination method. Background technique [0002] Crude oil contains hydrogen sulfide (H 2 S) Gas, with a specific gravity of 1.1895, heavier than air. At room temperature, the solubility of hydrogen sulfide in water is 2.6:1, and the solubility in petroleum is greater than that in water. It is a highly toxic and dangerous gas, when the concentration in the air exceeds 28mg / m 3 People cannot work when it exceeds 1000mg / m 3 When it is used, it can cause acute poisoning and cause casualties. Oil wells contain a large amount of H 2 S gas, along with the production of oil, is released through various methods or pipeline joints, especially scattered in the low-lying areas around the well site, causing serious casualties. Another hazard of hydrogen sulfide is the corrosion of oil and gas field equipment, H 2 S dissolves i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/38
CPCE21B43/38
Inventor 尹忠周会强
Owner 西安凯尔文石化助剂制造有限公司
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