CN101451242B - High temperature acidified corrosion inhibitor for oil passageway containing Cr - Google Patents
High temperature acidified corrosion inhibitor for oil passageway containing Cr Download PDFInfo
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- CN101451242B CN101451242B CN2007101786774A CN200710178677A CN101451242B CN 101451242 B CN101451242 B CN 101451242B CN 2007101786774 A CN2007101786774 A CN 2007101786774A CN 200710178677 A CN200710178677 A CN 200710178677A CN 101451242 B CN101451242 B CN 101451242B
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Abstract
The invention relates to a high-temperature acidizing inhibiter containing a Cr oil pipe. A main agent A comprises the following compositions by weight portion: 25 to 35 portions of quinoline quaternary ammonium salt or quinoline derivate quaternary ammonium salt, 5 to 10 portions of potassium iodide, and 40 to 60 portions of organic solvent methanol or formaldehyde. An addition agent B comprisesthe following compositions by weight portion: 30 to 50 portions of Mannich base, 15 to 35 portions of propiolic alcohol, 5 to 15 portions of chromic chloride, and 20 to 35 portions of formaldehyde. During use, the proportion of A to B is 2-1.5:1 according to the weight portions, in an environment of 15 percent HCl+3 percent HF mud acid and 20 percent hydrochloric acid, inhibitions to super 13Cr at 100 DEG C, 120 DEG C and 140 DEG C all accord with acidizing standard requirement; and according to SY/T5405-1996 acidizing inhibiter performance test method and evaluating indicator, corrosion velocity of the inhibiter is lower than 40g/m<2>h at 140 DEG C. The inhibiter achieves the requirement of primary standard, and solves the problem of acidizing corrosion of Cr-contained steel in a high-temperature oil well.
Description
Technical field
The present invention relates to a kind of high-temperature acidification corrosion inhibitor that oil, Sweet natural gas oil well contain the Cr oil pipe that is used for.
Background technology
In the high temperature simulated environment, when carrying out acidifying to containing Cr tubing, behind the employing carbon steel high-temperature acidification corrosion inhibitor, the sample local corrosion is very serious, and 80 ℃ is 26.06g/ (m2h) to hcl corrosion speed minimum value, and specimen surface has the larger area corrosion; To the mud acid erosion rate all at 100g/ (m
2H) more than, head and shoulders above the SY/T5405-1996 acidifying with inhibiter method for testing performance and evaluation index, specimen surface has large-area metal to come off, and illustrate that plain carbon stool does not have the corrosion mitigating effect of getting well with acidification corrosion inhibitor to containing Cr tubing.
Acidification corrosion inhibitor commonly used does not at high temperature have corrosion inhibition to containing the Cr oil pipe substantially substantially.Analyze reason: mainly be the singularity that contains the Cr material.In strong acid environment, the plain carbon stool surface forms passive film easily, acidification corrosion inhibitor has stoped the further corrosion of acid solution to carbon steel, and after adding the plain carbon stool acidification corrosion inhibitor, contain the aggravation of Cr material corrosion speed, illustrate that the corrosion inhibiting film that carbon steel acidification corrosion inhibitor commonly used forms can not fine prevention contain Cr material acidizing corrosion.
In order to solve CO
2Etching problem, domestic wide-scale adoption contain Cr tubing (for example super 13Cr, common 13Cr, and 3～5Cr oil pipe), and at high temperature (well depth surpasses 5000m) traditional carbon steel corrosion inhibitor can not carry out good inhibition to it; In order to solve the acidizing corrosion problem that contains the Cr material, the acidizing corrosion problem of particularly super 13Cr oil pipe must be studied a kind of brand-new acidification corrosion inhibitor.
Summary of the invention
What the objective of the invention is to develop the strong adsorptive type of a kind of multilayer contains Cr oil pipe high-temperature acidification corrosion inhibitor, solves mud acid and concentrated hydrochloric acid to containing Cr oil pipe acidizing corrosion problem at high temperature.
The high-temperature acidification corrosion inhibitor of the Cr of containing oil pipe of the present invention is main host A by quinoline quaternary ammonium salt or quinoline quaternary ammonium salt, based on Mannich base with contain the auxiliary agent B composition of the metal-salt of Cr, and A: B=2～1.5: 1 by weight in the practical application.
Host A forms is by weight: 25～35 parts of quinoline quaternary ammonium salts or quinoline quaternary ammonium salt; 5～10 parts of potassiumiodides and 40～60 parts of organic solvent methyl alcohol or formaldehyde;
The quinoline quaternary ammonium salt is toluquinoline quaternary ammonium salt, 2-toluquinoline quaternary ammonium salt or isoquinoline 99.9 quaternary ammonium salt.
Auxiliary agent B is formed: 30～50 parts of Mannich bases, 15～35 parts of propiolic alcohols, 5～10 parts of chromium chlorides and 20～35 parts of formaldehyde; Mannich base is by aniline, methyl phenyl ketone and formaldehyde reaction production.In the liquid phase corrosive environment, host and auxiliary are mutually promoted, are replenished dual function mutually in the metallic surface, are adsorbed on the metallic surface securely; form the netted fine and close protective membrane of multilayer; the obstruct acid solution contacts with metallic matrix, phenomenons such as no spot corrosion, pitting corrosion, and Applicable temperature can be up to 140 ℃.
The effect of invention
In 15%HCl+3%HF mud acid and 20% hydrochloric environment, 100 ℃, 120 ℃ and 140 ℃ super 13Cr inhibition is all met the acidifying standard-required, according to SY/T5405-1996 acidifying inhibiter method for testing performance and evaluation index, this acidification corrosion inhibitor all is lower than 40g/m 140 ℃ of following erosion rates
2H; Reach the primary standard requirement, solved and contain the acidizing corrosion problem of Cr steel at high-temperature oil well.
Concrete real-time mode
Embodiment 1
Host A forms: 25 parts of quinoline quaternary ammonium salts, 5 parts of potassiumiodides, 40 parts of organic solvent methyl alcohol;
Auxiliary agent B is formed: 30 parts of Mannich bases, 15 parts of propiolic alcohols, 10 parts of chromium chlorides, 20 parts of formaldehyde;
A: B=2 by weight during use: 1, temperature 120 ℃ use traditional carbon steel acidification corrosion inhibitors (usage quantity 5% mass concentration) after, super 13Cr tubular product sample erosion rate 300g/m
2More than the h, after adding contained the special-purpose acidification corrosion inhibitor of Cr tubing (usage quantity 3% mass concentration), specimen surface did not have corrosion substantially.
Embodiment 2
Host A forms: 35 parts of 2-toluquinoline quaternary ammonium salts, 10 parts of potassiumiodides, 60 parts of organic solvent formaldehyde;
Auxiliary agent B is formed: 50 Mannich bases, 35 propiolic alcohols, 5 chromium chlorides, 35 formaldehyde; Mannich base is by aniline, methyl phenyl ketone and formaldehyde reaction production.
A: B=1.5 by weight during use: 1, temperature is used the high-temperature acidification corrosion inhibitor that contains the Cr oil pipe at 100 ℃ to super 13Cr tubing, and after usage quantity 3% mass concentration, specimen surface does not have corrosion substantially.
Embodiment 3
Host A forms: 40 parts of 2-toluquinoline quaternary ammonium salts, 8 parts of potassiumiodides, 50 parts of organic solvent methyl alcohol;
Auxiliary agent B is formed: 40 parts of Mannich bases, 30 parts of propiolic alcohols, 10 parts of chromium chlorides, 30 parts of formaldehyde; Mannich base is by aniline, methyl phenyl ketone and formaldehyde reaction production.
A: B=1.8 by weight during use: 1, temperature is used the high-temperature acidification corrosion inhibitor that contains the Cr oil pipe at 140 ℃ to super 13Cr tubing, and erosion rate all is lower than 40g/m
2H reaches the primary standard requirement.
Embodiment 4
Host A forms: 40 parts of isoquinoline 99.9 quaternary ammonium salts, 8 parts of potassiumiodides, 50 parts of organic solvent methyl alcohol;
Auxiliary agent B is formed: 40 parts of Mannich bases, 30 parts of propiolic alcohols, 8 parts of chromium chlorides, 30 parts of formaldehyde; Mannich base is by aniline, methyl phenyl ketone and formaldehyde reaction production.
A: B=2 by weight during use: 1, temperature is used the high-temperature acidification corrosion inhibitor that contains the Cr oil pipe at 120 ℃ to super 13Cr tubing, and erosion rate all is lower than 40g/m
2H reaches the primary standard requirement.
Claims (2)
1. high-temperature acidification corrosion inhibitor that is used to contain the Cr oil pipe is characterized in that:
Host A forms is by weight: 25～35 parts of quinoline quaternary ammonium salts or quinoline quaternary ammonium salt, 5～10 parts of potassiumiodides and 40～60 parts of organic solvent methyl alcohol or formaldehyde;
Auxiliary agent B is formed: 30～50 parts of Mannich bases, 15～35 parts of propiolic alcohols, 5～15 parts of chromium chlorides and 20～35 parts of formaldehyde;
During use by weight A: B be (2～1.5): 1;
The quinoline quaternary ammonium salt is toluquinoline quaternary ammonium salt or isoquinoline 99.9 quaternary ammonium salt.
2. the high-temperature acidification corrosion inhibitor that is used to contain the Cr oil pipe according to claim 1 is characterized in that: described quinoline quaternary ammonium salt is a 2-toluquinoline quaternary ammonium salt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101786774A CN101451242B (en) | 2007-12-04 | 2007-12-04 | High temperature acidified corrosion inhibitor for oil passageway containing Cr |
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| CN2007101786774A CN101451242B (en) | 2007-12-04 | 2007-12-04 | High temperature acidified corrosion inhibitor for oil passageway containing Cr |
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| CN101451242A CN101451242A (en) | 2009-06-10 |
| CN101451242B true CN101451242B (en) | 2010-09-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953067A (en) * | 2011-08-19 | 2013-03-06 | 中国石油天然气股份有限公司 | Mannich base decalcification corrosion inhibitor, preparation and application thereof |
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| CN102051622A (en) * | 2010-12-28 | 2011-05-11 | 西安三环科技开发总公司 | Carbon steel acidizing corrosion inhibitor |
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| CN107418549B (en) * | 2017-08-29 | 2020-03-24 | 中国石油集团渤海钻探工程有限公司 | Composite acidizing corrosion inhibitor capable of resisting temperature of 120-140 DEG C |
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| CN114989798A (en) * | 2022-03-29 | 2022-09-02 | 中国石油天然气股份有限公司西南油气田分公司 | Ultra-high temperature acidizing corrosion inhibitor for Cr-containing oil pipe and preparation method thereof |
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| WO2006110961A2 (en) * | 2005-04-22 | 2006-10-26 | A J Scientific Pty Ltd | Novel corrosion inhibiting materials |
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Patent Citations (2)
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| WO2006110961A2 (en) * | 2005-04-22 | 2006-10-26 | A J Scientific Pty Ltd | Novel corrosion inhibiting materials |
| CN1912188A (en) * | 2005-08-11 | 2007-02-14 | 中国石油天然气集团公司 | Formula, preparation method of solid corrosion inhibitor and its using method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953067A (en) * | 2011-08-19 | 2013-03-06 | 中国石油天然气股份有限公司 | Mannich base decalcification corrosion inhibitor, preparation and application thereof |
| CN102953067B (en) * | 2011-08-19 | 2014-11-26 | 中国石油天然气股份有限公司 | Mannich base decalcification corrosion inhibitor, preparation and application thereof |
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| CN101451242A (en) | 2009-06-10 |
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