CN100595255C - Method for preventing and treating hydrogen sulphide in thick oil - Google Patents
Method for preventing and treating hydrogen sulphide in thick oil Download PDFInfo
- Publication number
- CN100595255C CN100595255C CN200810045275A CN200810045275A CN100595255C CN 100595255 C CN100595255 C CN 100595255C CN 200810045275 A CN200810045275 A CN 200810045275A CN 200810045275 A CN200810045275 A CN 200810045275A CN 100595255 C CN100595255 C CN 100595255C
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- hydrogen sulfide
- oil
- treatment agent
- treating agent
- preventing
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Abstract
The invention relates to a prevention process which is used to remove hydrogen sulfide in high-viscosity oil in oil fields, and to remove hydrogen sulfide in high-viscosity oil before exploited beforewell head. The technical scheme of the process comprises the following two steps, firstly allocating treating agent, adding 5-30% lithium carbonate, 3-25% ammonium acid carbonate, 3-20% sodium chloride and 2-15% octyl phenol polyoxyethylene ether according to the percentage by weight into a container which holds 30-60% water, and stirring and mixing evenly to dissolving completely, thereby obtaining the treating agent, and secondly transferring the treating agent to oil wells from the ring space of oil jacket under the condition of 25 DEG C and 101325MPa, mixing treating agent with high-viscosity oil to react, wherein hydrogen sulfide gas can reduce to 0-10ppm. The process does not need to add other devices, has wonderful economic benefits, and raw material which is used is commercialization product, and is easy to obtain. Hydrogen sulfide gas is removed in well to prevent disperse to the outside of the well and to air, and the agent is used on the high-viscosity exploitation.
Description
Technical field
The present invention relates to a kind of oil field that is used for and eliminate viscous crude hydrogen sulfide, with the method for preventing and treating of hydrogen sulfide in the viscous crude of its elimination before the extraction well head.
Background technology
Hydrogen sulfide is a kind of colourless gas, and proportion is 1.1895, is heavier than air, and the solubleness in water is 0.1moldm
-3, the solubleness in crude oil is greater than the solubleness in water.It is a kind of dangerous gas of severe toxicity, and concentration surpasses 28mg/m in air
3The time, the people just can't work, and surpasses 1000mg/m
3The time, just can cause acute poisoning, cause casualties.Contain a large amount of hydrogen sulfide in the viscous crude in oil field, concentration have up to 4500ppm.Along with the extraction of oil, discharge by the whole bag of tricks or pipeline interface place, be dispersed in well site low hollow zone on every side, cause serious casualty accident.
Another harm of hydrogen sulfide is the corrosion that causes oil-gas field equipment.Hydrogen sulfide is water-soluble, and ionization goes out H
+, this will make the iron and steel pipeline produce the liberation of hydrogen corrosion.
Because these harm of hydrogen sulfide must control hydrogen sulfide.If allow hydrogen sulfide be diffused into outside the well, to handle again, difficulty is too big, and that do has too much work.Hydrogen sulfide in the control well is to the corrosion of iron and steel pipeline, if use inhibiter, consumption is too big, and because the continuous of oil flowed, the effect of its inhibition is also not so good.So the oil field does not have the method for well administering hydrogen sulfide so far.
Summary of the invention
The objective of the invention is:, do not need in oil well, to add other equipment simultaneously, the special method of preventing and treating that proposes hydrogen sulfide in a kind of viscous crude for hydrogen sulfide in the viscous crude was eliminated before the extraction well head.
In order to achieve the above object, the present invention is by the following technical solutions: the method for preventing and treating of hydrogen sulfide in a kind of viscous crude, it is characterized in that: this method of preventing and treating comprises following two steps, the preparation of the first step treatment agent, by weight percentage 5 ~ 30% Quilonum Retards, 3 ~ 25% bicarbonate of ammonia, 3 ~ 20% sodium-chlor, 2 ~ 15% octyl phenol Soxylat A 25-7s are joined the amount of being filled with water and be in 30 ~ 60% the container of treatment agent total amount, mix, treat to dissolve fully, be this treatment agent; Second step under 25 ℃, the condition of 101325Pa, with above-mentioned treatment agent from oil sets annular space input oil well, treatment agent and viscous crude hybrid reaction, the stink damp physical efficiency is reduced to below the 10ppm.In the treatment agent preparation, raw material addition sequence and other factor are to not influence of result, and the dissolving result is a milk sap.
Principle of the present invention is: contain more hydrogen sulfide in the viscous crude in oil field, in the liquid treating agent input well, pending dose with viscous crude in and water in hydrogen sulfide react, principal reaction is:
H
2S+NH
4HCO
3＝NH
4HS+H
2CO
3
This reaction does not contain the porous channel that generates sedimentary sulfide and stop up formation crude oil or Sweet natural gas outflow, product NH
4HS is nontoxic, is polar material, in the soluble in water and crude oil, and along with crude oil extraction ground together, harm that just can removal of hydrogen sulfide.
Compared with prior art, the invention has the beneficial effects as follows: (1) from oil sets annular space input oil well, does not need to add any equipment, good economical benefit with treatment agent again; (2) this method is raw materials used all is commercially produced products, and as Quilonum Retard, bicarbonate of ammonia, sodium-chlor and octyl phenol Soxylat A 25-7, raw material is cheap and easy to get; (3) in well, just remove hydrogen sulfide, do not allow hydrogen sulfide be diffused into outside the well, so that be diffused in the atmosphere.
Embodiment
Embodiment one: Quilonum Retard 20%, bicarbonate of ammonia 15%, sodium-chlor 10%, octyl phenol Soxylat A 25-7 5%, water 50%.After above-mentioned five kinds of materials are mixed, from sleeve pipe input oil well, removal of hydrogen sulfide fully just.
Embodiment two: Quilonum Retard 15%, bicarbonate of ammonia 10%, sodium-chlor 10%, octyl phenol Soxylat A 25-7 5%, water 60%.After above-mentioned five kinds of materials are mixed, from oil sets annular space input oil well, removal of hydrogen sulfide fully just.
This method can rapidly and efficiently be removed deleterious hydrogen sulfide, even at the oil well mouth of high-hydrogen sulfide (4500ppm), and the above-mentioned treatment agent 0.5Kg of former oil consumption per ton (concrete consumption can be measured according to actual usage quantity, also can calculate according to reaction).Existing treatment agent market value is about 10000 yuan/ton, handles about 5 yuan of one ton of crude oil consumption Renminbi, hydrogen sulfide can be dropped to below the 10ppm even is zero, to human body and environmentally friendly.
Claims (2)
1. the method for preventing and treating of hydrogen sulfide in the viscous crude, it is characterized in that: this method comprises following two steps, the preparation of the first step treatment agent, by weight percentage 5～30% Quilonum Retards, 3～25% bicarbonate of ammonia, 3～20% sodium-chlor, 2～15% octyl phenol Soxylat A 25-7s are joined the amount of being filled with water and be in 30～60% the container of treatment agent total amount, mix, treat to dissolve fully, be this treatment agent; Second step under 25 ℃, the condition of 101325Pa, with above-mentioned treatment agent from oil sets annular space input oil well, treatment agent and viscous crude hybrid reaction, the stink damp physical efficiency is reduced to below the 10ppm.
2. the method for preventing and treating according to claim 1 is characterized in that: in the treatment agent preparation, raw material addition sequence and other factor are to not influence of result, and the dissolving result is a milk sap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810045275A CN100595255C (en) | 2008-01-25 | 2008-01-25 | Method for preventing and treating hydrogen sulphide in thick oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810045275A CN100595255C (en) | 2008-01-25 | 2008-01-25 | Method for preventing and treating hydrogen sulphide in thick oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101235281A CN101235281A (en) | 2008-08-06 |
| CN100595255C true CN100595255C (en) | 2010-03-24 |
Family
ID=39919192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810045275A Expired - Fee Related CN100595255C (en) | 2008-01-25 | 2008-01-25 | Method for preventing and treating hydrogen sulphide in thick oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100595255C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153997A (en) * | 2011-03-07 | 2011-08-17 | 天津亿利科能源科技发展股份有限公司 | Hydrogen sulfide treating agent for oil fields and method for treating hydrogen sulfide |
| CN102619497B (en) * | 2012-04-11 | 2015-05-06 | 中国石油天然气股份有限公司 | Method for continuously reducing hydrogen sulfide in oil well shaft |
| CN102775977B (en) * | 2012-08-10 | 2014-11-26 | 中国石油天然气股份有限公司 | Treating agent for inhibiting generation of hydrothion in steam flooding injection well, displacing oil and reducing viscosity and application thereof |
| CN105649590B (en) * | 2015-12-22 | 2019-05-07 | 中国石油天然气股份有限公司 | Thick oil thermal recovery method and device |
| CN105617848B (en) * | 2015-12-29 | 2018-06-01 | 中国石油天然气股份有限公司 | A kind of combustion in situ producing well associated gas inorganic agent and its preparation method and application |
-
2008
- 2008-01-25 CN CN200810045275A patent/CN100595255C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101235281A (en) | 2008-08-06 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20130125 |