CN103484089B - A kind of Oil-well corrosion-inhibitionsalt salt inhibitor and preparation method thereof - Google Patents
A kind of Oil-well corrosion-inhibitionsalt salt inhibitor and preparation method thereof Download PDFInfo
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- CN103484089B CN103484089B CN201310407845.8A CN201310407845A CN103484089B CN 103484089 B CN103484089 B CN 103484089B CN 201310407845 A CN201310407845 A CN 201310407845A CN 103484089 B CN103484089 B CN 103484089B
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- C—CHEMISTRY; METALLURGY
- 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
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
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- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Abstract
The invention discloses a kind of Oil-well corrosion-inhibitionsalt salt inhibitor and preparation method thereof, which presses down salt agent by substance A with pressing down salt host agent and suppression salt adjuvant according to mass ratio 5~30:5~20:1~10 mixing, adjusts pH to 6~8 and obtains；Wherein substance A is made by 1 halogen methyl naphthalene and quinoline in 130~150 DEG C of reactions.The inhibition presses down salt agent in high temperature（120℃）, high salinity（20×104mg/L）Corrosion inhibition rate is up to more than 85% under grade acid conditions, and tube surfaces are without spot corrosion, and suppression salt rate is up to more than 90%；The medicament can be analyzed to inorganic phase and organic phase after, and inorganic phase can be handled with the sewage in production fluid, and organic phase is in suspension, can be directly separated.
Description
Technical field
The present invention relates to a kind of Oil-well corrosion-inhibitionsalt salt inhibitors and preparation method thereof, belong to oil field chemical agent and technology of preparing neck
Domain.
Background technology
The oilfield exploitation middle and later periods, since production fluid water content increases and the factors such as output water salinity is higher, tube corrosion
Increasingly sharpen and oil pipe salt crust is serious, directly affect normal production, filling corrosion inhibiter and suppression salt agent are common solve the problems, such as
One of mode, but common medicament generally there are residual contamination, timeliness is short, heat-resistant salt-resistant is poor, whether compatibility the problems such as, mesh
It is preceding it is more to the research of corrosion inhibiter both at home and abroad, effect is preferable, representational patent includes：Disclosed in ZL200710186846.9
A kind of corrosion inhibitor for oil field, by the quaternised modified product of imidazoline and organic phospho acid saline copolymer according to 1.5~2:0.8~1.2
Ratio compounds, corrosion inhibition rate up to 80% or so, but there are hard to bear high temperature, timeliness is short the problems such as；ZL200910046244.2 is disclosed
A kind of phosphorus-free green composite corrosion and scale inhibitor, by poly-aspartate or poly-epoxy succinic acid, maleic acid homopolymer, acrylic compounds
Copolymer, inorganic zinc salt, ECH inhibitions synergist and water compound, and wherein ECH inhibitions synergist is lanthanum nitrate and gluconic acid
Sodium is according to 1:10~1:The mixture of 5 mass ratio composition, corrosion inhibiter pollution is small, but is difficult to inhibit sulfide corrosion and spot corrosion
Deng；ZL201010122429.X discloses a kind of solid corrosion and scale inhibitor for oil field, is seen sour butane -1,2 by 30%~40% 2-,
4- tricarboxylic acids PBTCA, 10%~15% polyethylene glycol, 10%~15% calgon, 15%~25% Span -60 and 20%
~30% stearic acid composition, the corrosion inhibiter solve the problems, such as that medicament timeliness is short, but for the pitting corrosion and underdeposit corrosion of pipeline
Deng difficult effective.The research for pressing down salt agent is rarely reported both at home and abroad at present, conventional washing is difficult to solve the problems, such as that salt is stifled, very
More producers have attempted a variety of suppression salt agent, though there is certain effect, but still the difficult an urgent demand for meeting suppression salt de-plugging.
Invention content
Existing corrosion inhibiter heat resistance is poor, is difficult to inhibit sulfide corrosion and spot corrosion the purpose of the invention is to overcoming,
And the salt that occurs of pit shaft it is stifled the defects of, a kind of Oil-well corrosion-inhibitionsalt salt inhibitor is provided.
It is to provide the preparation method of above-mentioned Oil-well corrosion-inhibitionsalt salt inhibitor simultaneously.
The present invention is realized by the following technical programs：In mass ratio 1~3:1 ratio is by 1- halogen methyls naphthalene and quinoline
1~6h is stirred to react at 130~150 DEG C to obtain containing structural formula（1）Substance A, by substance A and suppression salt host agent, suppression salt adjuvant
According to mass ratio 5~30:5~20:1~10 mixes up to Oil-well corrosion-inhibitionsalt salt inhibitor；
In formula：X is Cl or Br.
The 1- halogen methyls naphthalene is 1 chloromethyl naphthalene or 1- bromomethyl naphthalenes.
The suppression salt host agent is potassium ferrocyanide or sodium ferrocyanide.
The suppression salt adjuvant is organic phosphoric acid sodium, sodium carboxymethylcellulose or sodium polycarboxylate.
The preparation method of Oil-well corrosion-inhibitionsalt salt inhibitor, includes the following steps：
（1）In a kettle in mass ratio 1~3:1 ratio adds in 1- halogen methyls naphthalene and quinoline, is heated to 130~150
DEG C 1~6h is stirred to react, reduces temperature after completion of the reaction to 80~90 DEG C, obtain thick substances A；
（2）By substance A with suppression salt host agent and suppression salt adjuvant according to mass ratio 5~30:5~20:1~10 mixes up to blood red
Color oily mixture B；
（3）Mixture B is adjusted into pH to 6~8 to get Oil-well corrosion-inhibitionsalt salt inhibitor under the conditions of 20~50 DEG C.
The 1- halogen methyls naphthalene is 1 chloromethyl naphthalene or 1- bromomethyl naphthalenes.
The suppression salt host agent is potassium ferrocyanide or sodium ferrocyanide.
The suppression salt adjuvant is organic phosphoric acid sodium, sodium carboxymethylcellulose or sodium polycarboxylate.
The beneficial effects of the invention are as follows：Preparation inhibition suppression salt agent, saturation hydrogen sulfide/carbon dioxide, salinity 20 ×
104Corrosion inhibition rate is up to more than 85% under mg/L, medicament dosage 300ppm, the experimental conditions such as 120 DEG C, due to the film adsorptivity of formation
Relatively strong, tube surfaces are without spot corrosion, and inhibition timeliness is up to more than half a year, being 10~30 times of conventional corrosion inhibiter；The suppression salt of medicament
Rate is applied according to conventional " suppression salt agent+washing " technique, pump detection period can be made to extend 1 month or more up to more than 90%,
It is 3~6 times of conventional dose.The medicament can be analyzed to inorganic phase and organic phase after, and inorganic phase can be with the dirt in production fluid
Water is handled together, and organic phase is in suspension, can be directly separated.
Description of the drawings
Attached drawing 1 is 1-10 performance evaluation figures of the embodiment of the present invention.
Specific embodiment
Embodiment 1
20 grams of 1 chloromethyl naphthalenes, 8 grams of quinoline are added in a kettle, are heated to 140 DEG C and are stirred to react 4h；After completion of the reaction
Temperature is reduced to 80 DEG C, then add in the potassium ferrocyanide solutions of 100 gram masses a concentration of 20%, 15 gram masses a concentration of 20%
Organic phosphoric acid sodium solution adjusts pH to 6 to get Oil-well corrosion-inhibitionsalt salt inhibitor after stirring evenly under the conditions of 30 DEG C.
Embodiment 2
22 grams of 1- bromomethyls naphthalenes, 9 grams of quinoline are added in a kettle, are heated to 145 DEG C and are stirred to react 5h；After completion of the reaction
Temperature is reduced to 90 DEG C, then add in the sodium ferrocyanide solutions of 120 gram masses a concentration of 20%, 15 gram masses a concentration of 20%
Carboxymethylcellulose sodium solution adjusts pH to 8 to get Oil-well corrosion-inhibitionsalt salt inhibitor after stirring evenly under the conditions of 50 DEG C.
3~10 step of embodiment is identical with embodiment 1 or 2, and each composition and experimental condition are as shown in table 1：
1 embodiment of table, 3~10 formula components and synthesis condition (unit：g)
Note：20% in upper table refers to the solution that mass concentration is 20%.
The inhibition that Examples 1 to 10 is obtained presses down salt agent in saturation hydrogen sulfide/carbon dioxide, salinity 20 × 104mg/L、
Under the experimental conditions such as medicament dosage 300ppm, 120 DEG C of temperature, 7 days time, 800 revolutions per seconds of rotating speed, respectively with reference to SY/T5329-
2012《Clastic rock reservoir water water quality index and analysis method》With Q/SH1025 0598-2009《Press down salt agent technical conditions》Into
Row inhibition and suppression salt test, result of the test are as shown in Figure 1.As shown in Figure 1, the inhibition of inhibition suppression salt agent obtained by Examples 1 to 10
More than 85%, suppression salt rate works well rate more than 90%.
Claims (3)
1. a kind of Oil-well corrosion-inhibitionsalt salt inhibitor, it is characterised in that：In mass ratio 1~3:1 ratio exists 1- halogen methyls naphthalene and quinoline
130~150 DEG C are stirred to react 1~6h and obtain the substance A containing structural formula (1), and substance A and suppression salt host agent, suppression salt adjuvant are pressed
According to mass ratio 5~30:5~20:1~10 mixes up to Oil-well corrosion-inhibitionsalt salt inhibitor；
In formula：X is Cl or Br；
It is potassium ferrocyanide or sodium ferrocyanide to press down salt host agent；
It is organic phosphoric acid sodium, sodium carboxymethylcellulose or sodium polycarboxylate to press down salt adjuvant.
2. Oil-well corrosion-inhibitionsalt salt inhibitor according to claim 1, it is characterised in that：The 1- halogen methyls naphthalene is 1- chloromethyls
Naphthalene or 1- bromomethyl naphthalenes.
3. a kind of preparation method of Oil-well corrosion-inhibitionsalt salt inhibitor as claimed in claim 1 or 2, it is characterised in that：Including following step
Suddenly：
(1) in a kettle in mass ratio 1~3:1 ratio adds in 1- halogen methyls naphthalene and quinoline, is heated to 130~150 DEG C and stirs
1~6h of reaction is mixed, temperature is reduced after completion of the reaction to 80~90 DEG C, obtains thick substances A；
(2) by substance A with pressing down salt host agent and suppression salt adjuvant according to mass ratio 5~30:5~20:1~10 mixes up to blood red oil
Shape mixture B；
(3) mixture B is adjusted into pH to 6~8 to get Oil-well corrosion-inhibitionsalt salt inhibitor under the conditions of 20~50 DEG C.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107523283B (en) * | 2017-08-07 | 2020-07-10 | 中国石油天然气股份有限公司 | Composition for inhibiting solid phase deposition in oil and gas well |
| CN107384362A (en) * | 2017-08-08 | 2017-11-24 | 克拉玛依市新聚工贸有限责任公司 | A kind of acidification corrosion inhibitor and preparation method and application |
| CN107699209B (en) * | 2017-08-11 | 2020-09-01 | 中国石油化工股份有限公司 | Composite salt-resistant agent and application thereof |
| CN108410444A (en) * | 2018-03-16 | 2018-08-17 | 中国石油大学(华东) | A kind of acidification corrosion inhibitor and the preparation method and application thereof based on dimer indole derivative |
| CN111500266A (en) * | 2019-01-30 | 2020-08-07 | 中国石油化工股份有限公司 | Completion fluid composition and application thereof |
| CN111808591A (en) * | 2020-07-27 | 2020-10-23 | 北京贝斯特佳科技有限公司 | Shaft salt crystal dispersant, and regulation and control method and application thereof |
| CN115370320A (en) * | 2021-05-19 | 2022-11-22 | 中国石油化工股份有限公司 | Gas storage well bore for gas reservoir type gas storage, salt deposition prevention method and application |
| CN114477478A (en) * | 2021-12-31 | 2022-05-13 | 上海丰信环保科技有限公司 | Environment-friendly salt inhibitor and preparation method thereof |
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