CN101029223A - High-temperature corrosion inhibitor for acid fracturing - Google Patents
High-temperature corrosion inhibitor for acid fracturing Download PDFInfo
- Publication number
- CN101029223A CN101029223A CN 200710064675 CN200710064675A CN101029223A CN 101029223 A CN101029223 A CN 101029223A CN 200710064675 CN200710064675 CN 200710064675 CN 200710064675 A CN200710064675 A CN 200710064675A CN 101029223 A CN101029223 A CN 101029223A
- Authority
- CN
- China
- Prior art keywords
- paraformaldehyde
- add
- temperature
- corrosion inhibitor
- alcohol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 21
- 230000007797 corrosion Effects 0.000 title claims abstract description 21
- 239000003112 inhibitor Substances 0.000 title claims abstract description 14
- 239000002253 acid Substances 0.000 title abstract description 7
- 229930040373 Paraformaldehyde Natural products 0.000 claims abstract description 22
- 229920002866 paraformaldehyde Polymers 0.000 claims abstract description 22
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 21
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 20
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 9
- JBIROUFYLSSYDX-UHFFFAOYSA-M benzododecinium chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 JBIROUFYLSSYDX-UHFFFAOYSA-M 0.000 claims abstract description 9
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims abstract description 8
- TVDSBUOJIPERQY-UHFFFAOYSA-N prop-2-yn-1-ol Chemical compound OCC#C TVDSBUOJIPERQY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 6
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- -1 methane amide Chemical class 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 210000003298 dental enamel Anatomy 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000003129 oil well Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 6
- 230000005764 inhibitory process Effects 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 abstract 2
- 150000002191 fatty alcohols Chemical class 0.000 abstract 1
- 238000005530 etching Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
A high-temperature corrosion inhibitor for acid fracturing is used in the acid fracturing process of oil wells. Is characterized in that: the weight ratio of the raw material components is as follows: A. cyclohexanone: 22-30%; B. hydrochloric acid at a concentration of 31%: 1.5-4%; C. paraformaldehyde: 6-10%; D. aniline: 10-14%; E. fatty alcohol polyoxyethylene ether: 8-10%; F. formamide: 12-16%; G. propargyl alcohol: 3-6%; H. isopropyl alcohol: 2-4%; I. methanol: 10-15%; J. dodecyl dimethyl benzyl ammonium chloride: 3-6%. The invention has the following effects: the corrosion inhibition rate reaches 90 percent.
Description
Technical field
The present invention relates to the oilfield chemical technical field, high-temperature corrosion inhibitor prescription that uses in particularly a kind of oil well acidation fracturing process and preparation method thereof.
Background technology
At present, inhibiter is often used in the oil field in drilling well, well cementation process.As notification number is CN1297626C, and a kind of oil drilling well cementation specialized barrel anti-corrosive protecting agent is provided.Be to mix by inhibiter, sterilant, stablizer trivalent aluminium salt, weighting agent, tackifier, slope soil and water; mainly solve oilfield well completion down-hole open hole section casing corrosion and protection question; prevent the open hole sloughing problem simultaneously; its objective is that protective casing is not subjected to the corrosion of completion mud and local water etc.; prolong oil well work-ing life, corrosion inhibition rate reaches more than 90%.
In the oilfield development process, when carrying out acid fracturing, also often need in system, add inhibiter and protect tubing string and oil well casing in the well in addition.But some inhibiter lose corrosion inhibition under hot conditions, cause tubing string heavy corrosion in the well.
Summary of the invention
The objective of the invention is: prescription of a kind of acidifying and fracturing high-temperature corrosion inhibitor and preparation method thereof is provided.Solve oil well when acid fracturing, the etching problem of tubing string in high-temperature condition is gone into the well.
The technical scheme that the present invention is taked for its technical problem of solution is:
The raw material of acidifying and fracturing high-temperature corrosion inhibitor and prescription:
Raw material comprises:
1, pimelinketone (industrial goods)
2, concentration is 31% hydrochloric acid
3, Paraformaldehyde 96 (industrial goods)
4, aniline (industrial goods)
5, its molecular formula of fatty alcohol-polyoxyethylene ether (OS-15) (industrial goods) is: RO CH
2CH
2O
nH (R=C
12～C
18, n=3～20)
6, methane amide (industrial goods)
7, propiolic alcohol (industrial goods)
8, Virahol (industrial goods)
9, methyl alcohol (industrial goods)
10, dodecyl benzyl dimethyl ammonium chloride (industrial goods)
Used raw material, market all have sale.
Acidifying and fracturing high-temperature corrosion inhibitor feed composition weight ratio is:
1, pimelinketone (industrial goods): 22～30%
2, concentration is 31% hydrochloric acid: 1.5～4%
3, Paraformaldehyde 96 (industrial goods): 6～10%
4, aniline (industrial goods): 10～14%
5, fatty alcohol-polyoxyethylene ether (OS-15) (industrial goods): 8～10%
6, methane amide (industrial goods): 12～16%
7, propiolic alcohol: 3～6%
8, Virahol: 2～4%
9, methyl alcohol: 10～15%
10, dodecyl benzyl dimethyl ammonium chloride (1227): 3～6%
Two, the production method of acidifying and fracturing high-temperature corrosion inhibitor
Major equipment:
Enamel reaction still with 3000L of stirring, heating, cooling and vacuum system.
Production method:
At first in reactor, add pimelinketone and concentration and be 31% hydrochloric acid, add Paraformaldehyde 96 afterwards while stirring, and be warming up to 60～65 ℃, treat behind the 20min that Paraformaldehyde 96 dissolves fully, slowly add Paraformaldehyde 96 again, maintain the temperature at 60～65 ℃, treat behind the 20min that Paraformaldehyde 96 dissolves fully, slowly add Paraformaldehyde 96 again, repeated multiple times like this, meet the demands up to adding Paraformaldehyde 96, last permanent 60～70 ℃, 30min; Be 31% hydrochloric acid to wherein adding aniline and concentration again, be warming up to 100 ℃ of perseverances 4 hours; The still material is cooled to 80 ℃, adds fatty alcohol-polyoxyethylene ether (OS-15), continue cooling; Treat that temperature reduces to 45 ℃, add methane amide, propiolic alcohol, dodecyl benzyl dimethyl ammonium chloride (1227), Virahol, methyl alcohol successively, stir the 30min discharging and obtain acidifying and fracturing high-temperature corrosion inhibitor.
The invention has the beneficial effects as follows: solved oil well in the acid fracturing process, temperature reaches under 120 ℃ of high-temperature conditions, the etching problem of tubing string in the oil well, and corrosion inhibition rate reaches 90%.
Embodiment
Embodiment 1: utilize the present invention rise white in June, 2005 respectively two oil-gas fields 30 surplus mouthful formation temperature on 120 ℃ oil well, test, solve oil well when acid fracturing, the etching problem of tubing string in high-temperature condition is gone into the well.
The prescription and the production technique of acidifying and fracturing high-temperature corrosion inhibitor are: at first add pimelinketone 600kg in reactor, concentration is 31% hydrochloric acid 50kg, add Paraformaldehyde 96 25kg afterwards while stirring, and be warming up to 60～65 ℃, treat behind the 20min that Paraformaldehyde 96 dissolves fully, slowly add the 25kg Paraformaldehyde 96 again, maintain the temperature at 60～65 ℃, treat behind the 20min that Paraformaldehyde 96 dissolves fully, slowly add the 25kg Paraformaldehyde 96 again, repeated multiple times like this is till adding Paraformaldehyde 96 185kg, 60～70 ℃ of last constant temperature, 30min; Be 31% hydrochloric acid 25kg to wherein adding aniline 265kg and concentration again, be warming up to 100 ℃ of constant temperature 4 hours; The still material is cooled to 80 ℃, adds the OS-15 of 200kg, continue cooling; Treat that temperature reduces to 45 ℃, add methane amide 300kg, propiolic alcohol 100kg, dodecyl benzyl dimethyl ammonium chloride (1227) 100kg, Virahol 50kg, methyl alcohol 250kg successively, stir the 30min discharging and obtain acidifying and fracturing high-temperature corrosion inhibitor 2125Kg.
Claims (2)
1, a kind of acidifying and fracturing high-temperature corrosion inhibitor is characterized in that: the feed composition weight ratio is:
A, pimelinketone: 22～30%;
B, concentration are 31% hydrochloric acid: 1.5～4%;
C, Paraformaldehyde 96: 6～10%;
D, aniline: 10～14%;
E, fatty alcohol-polyoxyethylene ether: 8～10%;
F, methane amide: 12～16%;
G, propiolic alcohol: 3～6%;
H, Virahol: 2～4%;
I, methyl alcohol: 10～15%;
J, dodecyl benzyl dimethyl ammonium chloride: 3～6%.
2, acidifying and fracturing high-temperature corrosion inhibitor according to claim 1, its production method feature is:
Major equipment is the enamel reaction still with 3000L of stirring, heating, cooling and vacuum system;
Production method:
At first in reactor, add pimelinketone and concentration and be 31% hydrochloric acid, add Paraformaldehyde 96 while stirring in batches, and be warming up to 60～65 ℃, treat behind the 20min that Paraformaldehyde 96 dissolves fully, slowly add Paraformaldehyde 96 again, maintain the temperature at 60～65 ℃, treat behind the 20min that Paraformaldehyde 96 dissolves fully, slowly add Paraformaldehyde 96 again, repeated multiple times like this, all add 60～70 ℃ of constant temperature, 30min up to Paraformaldehyde 96; Add aniline again in still, concentration is 31% hydrochloric acid, is warming up to 100 ℃ of constant temperature 4 hours; The still material is cooled to 80 ℃, adds fatty alcohol-polyoxyethylene ether (OS-15), continue cooling; Treat that temperature reduces to 45 ℃, add methane amide, propiolic alcohol, dodecyl benzyl dimethyl ammonium chloride (1227), Virahol, methyl alcohol successively, stir the 30min discharging and obtain acidifying and fracturing high-temperature corrosion inhibitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100646752A CN100549124C (en) | 2007-03-23 | 2007-03-23 | High-temperature corrosion inhibitor for acid fracturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100646752A CN100549124C (en) | 2007-03-23 | 2007-03-23 | High-temperature corrosion inhibitor for acid fracturing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101029223A true CN101029223A (en) | 2007-09-05 |
| CN100549124C CN100549124C (en) | 2009-10-14 |
Family
ID=38714777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100646752A Active CN100549124C (en) | 2007-03-23 | 2007-03-23 | High-temperature corrosion inhibitor for acid fracturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100549124C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010706A (en) * | 2010-08-12 | 2011-04-13 | 天津市天诚化工有限公司 | Low-speed corrosion inhibitor |
| CN102363888A (en) * | 2011-11-22 | 2012-02-29 | 兰州蓝星有限公司 | Corrosion inhibitor used during scouring and preparation method thereof |
| CN102899012A (en) * | 2012-11-14 | 2013-01-30 | 北京世纪中星能源技术有限公司 | Self-born acid and preparation method and application thereof |
| CN103409129A (en) * | 2013-08-09 | 2013-11-27 | 上海富茵环保科技有限公司 | organic amine acidizing corrosion inhibitor used for well drilling and preparation method thereof |
| CN107987822A (en) * | 2017-12-06 | 2018-05-04 | 唐山市金沙工贸有限公司 | High-temperature acidification corrosion inhibitor and preparation method thereof and application |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571450B (en) * | 2012-07-19 | 2016-03-09 | 中国石油天然气集团公司 | A kind of fracture acidizing low frictional resistance emulsification acid solution and application thereof |
| CN105885814A (en) * | 2016-04-25 | 2016-08-24 | 中国石油集团渤海钻探工程有限公司 | Corrosion inhibitor for oil-gas well acidification and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3770377A (en) * | 1971-03-08 | 1973-11-06 | Celanese Corp | Process for inhibiting corrosion |
| US4780278A (en) * | 1986-10-31 | 1988-10-25 | Chevron Research Company | Alkylaniline/formaldehyde oligomers as corrosion inhibitors |
| US4778654A (en) * | 1986-10-31 | 1988-10-18 | Chevron Research Company | Alkylaniline/formaldehyde co-oligomers as corrosion inhibitors |
-
2007
- 2007-03-23 CN CNB2007100646752A patent/CN100549124C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010706A (en) * | 2010-08-12 | 2011-04-13 | 天津市天诚化工有限公司 | Low-speed corrosion inhibitor |
| CN102010706B (en) * | 2010-08-12 | 2013-06-05 | 天津市天诚化工有限公司 | Low-speed corrosion inhibitor |
| CN102363888A (en) * | 2011-11-22 | 2012-02-29 | 兰州蓝星有限公司 | Corrosion inhibitor used during scouring and preparation method thereof |
| CN102363888B (en) * | 2011-11-22 | 2013-06-12 | 兰州蓝星有限公司 | Corrosion inhibitor used during scouring and preparation method thereof |
| CN102899012A (en) * | 2012-11-14 | 2013-01-30 | 北京世纪中星能源技术有限公司 | Self-born acid and preparation method and application thereof |
| CN102899012B (en) * | 2012-11-14 | 2016-03-02 | 北京世纪中星能源技术有限公司 | Spontaneous acid, Preparation Method And The Use |
| CN103409129A (en) * | 2013-08-09 | 2013-11-27 | 上海富茵环保科技有限公司 | organic amine acidizing corrosion inhibitor used for well drilling and preparation method thereof |
| CN107987822A (en) * | 2017-12-06 | 2018-05-04 | 唐山市金沙工贸有限公司 | High-temperature acidification corrosion inhibitor and preparation method thereof and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100549124C (en) | 2009-10-14 |
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| C14 | Grant of patent or utility model | ||
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