CN107459984A - A kind of hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction and preparation method thereof - Google Patents
A kind of hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction and preparation method thereof Download PDFInfo
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- CN107459984A CN107459984A CN201610389218.XA CN201610389218A CN107459984A CN 107459984 A CN107459984 A CN 107459984A CN 201610389218 A CN201610389218 A CN 201610389218A CN 107459984 A CN107459984 A CN 107459984A
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- corrosion inhibiter
- stearic acid
- hydrogen sulfide
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
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- C—CHEMISTRY; METALLURGY
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- C09K2208/32—Anticorrosion additives
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Abstract
The present invention relates to hydrogen sulfide corrosion inhibiter used in a kind of heavy crude heat extraction and preparation method thereof, belongs to oil field chemical agent formula and technical field.The each component mass percent of the corrosion inhibiter is：Stearic acid 15% 30%, diethylentriamine 14% 24%, thiocarbamide 5% 15%, the type surfactants of NPC 9 1% 6%, formalin 30% 60%.Preparation method：(1) stearic acid and diethylentriamine are added in xylene solvent, are heated to 150 160 DEG C, and stablize 2 3h, then be warming up to 190 200 DEG C of reaction 3h, stearic acid imidazoline intermediate is obtained after cooling；(2) intermediate, diethylentriamine and thiocarbamide are added into xylene solvent, temperature is heated to 100 130 DEG C, react 4 5h, cooling obtains amino ethylene thiourea base imidazoline；(3) by formalin and the type surfactant uniform stirrings of NPC 9, add amino ethylene thiourea base imidazoline and be well mixed, produce required corrosion inhibiter.Preparation method of the present invention is simple, and product temperature tolerance is high, advantages of good adsorption effect good with additive compound, and corrosion mitigating effect is good.
Description
Technical field
The present invention relates to hydrogen sulfide corrosion inhibiter used in a kind of heavy crude heat extraction and preparation method thereof, and in particular to corrosion inhibiter
Preparation method, belong to oil field chemical agent formula and technical field.
Background technology
Hydrogen sulfide is a kind of hypertoxic gas, and harm to the human body is serious.Production practices show, corruption of the metal in acid medium
Erosion rate will be higher by much than the rate of corrosion in other media, with the intensification of natural petroleum gas field degree, particularly viscous crude heat
In adopting, because the crude oil chemical reaction complicated with stratum water and rock forming mineral progress that be injected to of steam provides HTHP
Advantage so that steam injection well produces more hydrogen sulfide and carbon dioxide, the corruption of the oil pipe and sleeve pipe of these oil wells when exploiting
Erosion is than more serious, and petroleum gas is faced with the problem of increasing equipment installation corruption is lit up in Mining Transport, so grinding
The corrosion inhibition method for studying carefully the rotten candle of suppression metal in acid medium is a very important problem.
At present, the technology of control corrosion rate mainly has：Corrosion-resistant material is developed, corrosion inhibiter is filled, in existing equipment inwall
Coated anti-corrosion layer.Amount of literature data proves that corrosion inhibiter is the most economical and method easily and effectively.And the research of corrosion inhibiter and should
It is more with also comparing, but it is also few to the adaptable corrosion inhibiter of oil well of steam injection thermal recovery.Because steam injection and steam quality will
The reason asked, the temperature of Produced Liquid is universal higher, and the concentration of hydrogen sulfide and carbon dioxide is also higher, and this requires corrosion inhibiter to have
There is a resistant to elevated temperatures characteristic, corrosion mitigating effect is more preferable.
The content of the invention
The hydrogen sulfide that the present invention proposes to use in a kind of heavy crude heat extraction for technical problem present in solution known technology
Corrosion inhibiter and preparation method thereof.
The present invention provides one kind amino ethylene-thioureido-imidazoline composite inhibiter suitable for heavy crude heat extraction, to have
Effect reduces the corrosion to oil well and equipment in heat extraction by steam injection class technology recovery process.
Simple with preparation method it is an object of the invention to provide one kind, material is easy to get, small to stratum contaminative, with other
The hydrogen sulfide corrosion inhibiter used in the heavy crude heat extraction for the features such as oil well additive compound is good, high temperature resistant, and corrosion mitigating effect is good.
The hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction of the present invention is adopted the technical scheme that：
A kind of hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction and preparation method thereof, it is characterised in that：Corrosion inhibiter includes group
The species and mass percent divided are stearic acid 15%-30%, diethylentriamine 14%-24%, thiocarbamide 5%-15%, NPC-9
Type surfactant 1%-6%, formalin 30%-60%.
The preparation method of the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction of the present invention is adopted the technical scheme that：
A kind of preparation method of the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction, it is characterised in that：Used in heavy crude heat extraction
Hydrogen sulfide corrosion inhibiter preparation process it is as follows：
1) stearic acid imidazoline intermediate is prepared
Stearic acid and diethylentriamine are added in xylene solvent, are heated to 150-160 DEG C, and stable 2-3h, then
190-200 DEG C of reaction 3h is warming up to, stearic acid imidazoline intermediate is obtained after cooling；
(2) amino ethylene-thioureido-imidazoline is prepared
Stearic acid imidazoline intermediate, diethylentriamine and thiocarbamide are added into xylene solvent, temperature is heated to 100-
130 DEG C, 4-5h is reacted, cooling obtains amino ethylene-thioureido-imidazoline；
(3) system allots the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction
By formalin and NPC-9 type surfactant uniform stirrings, amino ethylene-thioureido-imidazoline mixing is added
Uniformly, after standing a period of time, required corrosion inhibiter is produced.
The following technical scheme that the preparation method of the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction of the present invention can also be taken：
The preparation method of the hydrogen sulfide corrosion inhibiter used in described heavy crude heat extraction, it is characterised in that：It is stearic in process (1)
The mol ratio of acid and diethylentriamine is 1：1.3, stearic acid imidazoline intermediate in process (2), diethylentriamine and thiocarbamide
Mol ratio is 1:1:1, formaldehyde mass fraction is 30% in formalin.
The following technical scheme that the preparation method of the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction of the present invention can also be taken：
The preparation method of the hydrogen sulfide corrosion inhibiter used in described heavy crude heat extraction, it is characterised in that：Preparation process (1) and
(2), whole process is passed through nitrogen and protects stearic acid, diethylentriamine and thiocarbamide not to be oxidized by oxygen at high temperature, while also can
Water in reaction is taken away.
The present invention has the advantages and positive effects of：
Hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction and preparation method thereof is as a result of the brand-new technical side of the present invention
Case, compared with prior art, can be with present invention can apply to corrosion of the hydrogen sulfide to oil well rig in steam-injected well Produced Liquid
Corrosion inhibiter heatproof is improved to 160-200 DEG C, can be compounded well with other additives, and be up to inhibition efficiency
94.515% -97.05%.
Embodiment
In order to further understand the content, features and effects of the present invention, enumerate following examples and describe in detail such as
Under：
Embodiment 1
A kind of formula of the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction is following (mass percent)：
According to " SY/T 5673--2000 oil field extracted waters corrosion inhibiter method of evaluating performance ", the test piece turn in autoclave
Speed is 200r/min, and the lacing film time is 72h, and environment temperature is arranged to 160 DEG C, and corrosion inhibiter adding consistency is 60mg/L.Lacing film is real
After testing end, test piece is weighed after pickling, drying, and the inhibition efficiency of corrosion inhibiter is calculated by front and rear test piece mass change.
The test piece corrosion mitigating effect of table 1 contrasts
| Experiment type | Blank | Corrosion inhibiter |
| Corrosion rate (mm/a) | 14.476 | 0.794 |
| Corrosion inhibition rate (%) | — | 94.515 |
Embodiment 2
A kind of formula of the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction is following (mass percent)：
According to " SY/T 5673--2000 oil field extracted waters corrosion inhibiter method of evaluating performance ", the test piece turn in autoclave
Speed is 200r/min, and the lacing film time is 72h, and environment temperature is arranged to 160 DEG C, and corrosion inhibiter adding consistency is 60mg/L.Lacing film is real
After testing end, test piece is weighed after pickling, drying, and the inhibition efficiency of corrosion inhibiter is calculated by front and rear test piece mass change.
The test piece corrosion mitigating effect of table 2 contrasts
| Experiment type | Blank | Corrosion inhibiter |
| Corrosion rate (mm/a) | 14.476 | 0.636 |
| Corrosion inhibition rate (%) | — | 95.607 |
Embodiment 3
A kind of formula of the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction is following (mass percent)：
According to " SY/T 5673--2000 oil field extracted waters corrosion inhibiter method of evaluating performance ", the test piece turn in autoclave
Speed is 200r/min, and the lacing film time is 72h, and environment temperature is arranged to 160 DEG C, and corrosion inhibiter adding consistency is 60mg/L.Lacing film is real
After testing end, test piece is weighed after pickling, drying, and the inhibition efficiency of corrosion inhibiter is calculated by front and rear test piece mass change.
The test piece corrosion mitigating effect of table 3 contrasts
| Experiment type | Blank | Corrosion inhibiter |
| Corrosion rate (mm/a) | 14.476 | 0.427 |
| Corrosion inhibition rate (%) | — | 97.05 |
Embodiment 4
A kind of formula of the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction is following (mass percent)：
According to " SY/T 5673--2000 oil field extracted waters corrosion inhibiter method of evaluating performance ", the test piece turn in autoclave
Speed is 200r/min, and the lacing film time is 72h, and environment temperature is arranged to 160 DEG C, and corrosion inhibiter adding consistency is 60mg/L.Lacing film is real
After testing end, test piece is weighed after pickling, drying, and the inhibition efficiency of corrosion inhibiter is calculated by front and rear test piece mass change.
The test piece corrosion mitigating effect of table 4 contrasts
| Experiment type | Blank | Corrosion inhibiter |
| Corrosion rate (mm/a) | 14.476 | 0.614 |
| Corrosion inhibition rate (%) | — | 95.758 |
Embodiment 5
A kind of formula of the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction is following (mass percent)：
According to " SY/T 5673--2000 oil field extracted waters corrosion inhibiter method of evaluating performance ", the test piece turn in autoclave
Speed is 200r/min, and the lacing film time is 72h, and environment temperature is arranged to 200 DEG C, and corrosion inhibiter adding consistency is 60mg/L.Lacing film is real
After testing end, test piece is weighed after pickling, drying, and the inhibition efficiency of corrosion inhibiter is calculated by front and rear test piece mass change.
The test piece corrosion mitigating effect of table 5 contrasts
| Experiment type | Blank | Corrosion inhibiter |
| Corrosion rate (mm/a) | 14.476 | 0.504 |
| Corrosion inhibition rate (%) | — | 96.27 |
Above example has described preferable temperature tolerance, exist it is optimal prepare ratio, have preferable corrosion mitigating effect, can
To consider to be applied in heavy crude heat extraction to protect oil well rig.
Claims (5)
1. the present invention provides hydrogen sulfide corrosion inhibiter used in a kind of heavy crude heat extraction and preparation method thereof, it is characterised in that：Inhibition
It is stearic acid 15%-30% that agent, which includes the species of component and mass percent, diethylentriamine 14%-24%, thiocarbamide 5%-
15%, NPC-9 type surfactant 1%-6%, formalin 30%-60%.
2. the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction according to claim 1, it is characterised in that：With formalin
For solvent, mass percent 30%-60%, solute is stearic acid 15%-30%, diethylentriamine 14%-24%, thiocarbamide
5%-15%, NPC-9 type surfactant 1%-6%.
3. the preparation method of the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction according to claim 1, it is characterised in that：It is thick
The preparation process of the hydrogen sulfide corrosion inhibiter used in oily thermal recovery is as follows：
(1) stearic acid imidazoline intermediate is prepared
Stearic acid and diethylentriamine are added in xylene solvent, are heated to 150-160 DEG C, and stable 2-3h, then heat up
To 190-200 DEG C of reaction 3h, stearic acid imidazoline intermediate is obtained after cooling；
(2) amino ethylene-thioureido-imidazoline is prepared
Stearic acid imidazoline intermediate, diethylentriamine and thiocarbamide are added into xylene solvent, temperature is heated to 100-130
DEG C, 4-5h is reacted, cooling obtains amino ethylene-thioureido-imidazoline；
(3) system allots the hydrogen sulfide corrosion inhibiter used in heavy crude heat extraction
By formalin and NPC-9 type surfactant uniform stirrings, it is equal to add amino ethylene-thioureido-imidazoline mixing
It is even, after standing a period of time, produce required corrosion inhibiter.
4. the preparation method of the hydrogen sulfide corrosion inhibiter used in the heavy crude heat extraction according to power requires 3, it is characterised in that：Process
(1) mol ratio of stearic acid and diethylentriamine is 1: 1.3 in, stearic acid imidazoline intermediate, diethylentriamine in process (2)
Mol ratio with thiocarbamide is 1: 1: 1, and formaldehyde mass fraction is 30% in formalin.
5. the preparation method of the hydrogen sulfide corrosion inhibiter used in the heavy crude heat extraction according to power requires 3, it is characterised in that：Prepare
Process (1) and (2), whole process are passed through nitrogen and protect stearic acid, diethylentriamine and thiocarbamide not to be oxidized by oxygen at high temperature,
The water in reaction can also be taken away simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610389218.XA CN107459984B (en) | 2016-06-02 | 2016-06-02 | Hydrogen sulfide corrosion inhibitor used in heavy oil thermal recovery and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610389218.XA CN107459984B (en) | 2016-06-02 | 2016-06-02 | Hydrogen sulfide corrosion inhibitor used in heavy oil thermal recovery and preparation method thereof |
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| CN107459984A true CN107459984A (en) | 2017-12-12 |
| CN107459984B CN107459984B (en) | 2020-12-01 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321463A (en) * | 2011-06-14 | 2012-01-18 | 北京科技大学 | Sulfur-containing bis-imidazoline type carbon dioxide corrosion inhibitor and preparation method thereof |
| CN102344789A (en) * | 2010-12-10 | 2012-02-08 | 新疆德蓝股份有限公司 | Hydrogen sulfide resistant corrosion inhibitor for oil and gas well pipeline |
| US20140194326A1 (en) * | 2011-12-16 | 2014-07-10 | Halliburton Energy Services, Inc. | Compositions and Methods for Treatment of Well Bore Tar |
-
2016
- 2016-06-02 CN CN201610389218.XA patent/CN107459984B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344789A (en) * | 2010-12-10 | 2012-02-08 | 新疆德蓝股份有限公司 | Hydrogen sulfide resistant corrosion inhibitor for oil and gas well pipeline |
| CN102321463A (en) * | 2011-06-14 | 2012-01-18 | 北京科技大学 | Sulfur-containing bis-imidazoline type carbon dioxide corrosion inhibitor and preparation method thereof |
| US20140194326A1 (en) * | 2011-12-16 | 2014-07-10 | Halliburton Energy Services, Inc. | Compositions and Methods for Treatment of Well Bore Tar |
Non-Patent Citations (1)
| Title |
|---|
| 胡桢等: "《新型高分子合成与制备工艺》", 31 May 2014, 哈尔滨工业大学出版社 * |
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