CN105483712A - Corrosion inhibitor for oil field reinjection water - Google Patents
Corrosion inhibitor for oil field reinjection water Download PDFInfo
- Publication number
- CN105483712A CN105483712A CN201510868590.4A CN201510868590A CN105483712A CN 105483712 A CN105483712 A CN 105483712A CN 201510868590 A CN201510868590 A CN 201510868590A CN 105483712 A CN105483712 A CN 105483712A
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- CN
- China
- Prior art keywords
- oil field
- corrosion inhibitor
- water
- field reinjection
- tannin
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
Abstract
The invention provides a corrosion inhibitor for oil field reinjection water. The corrosion inhibitor for the oil field reinjection water contains deionized water, imidazoline-ammonium salt, tannin and organic phosphonic acid. The mass percent of deionized water, imidazoline-ammonium salt, tannin and organic phosphonic acid is 30-60:15-65:5-10:2-15. An impermeable protective film of a net-shaped structure can be generated through the reaction between the corrosion inhibitor and iron ions or ferric oxide on the metal surface, iron corrosion can be restrained, and therefore the corrosion inhibition function can be achieved. In addition, the dirt blocking performance is achieved, deposition of calcium carbonate on the pipe wall of a heat exchanger can be reduced, and deposition of calcium sulfate in water can be reduced.
Description
Technical field
The invention belongs to oil field special agent, particularly a kind of inhibiter for oil field reinjection water.
Background technology
, in the injecting process, there is a series of problem in oilfield sewage water quality more complicated: in various degree dissolved the gases such as hydrogen sulfide, carbonic acid gas, oxygen, extensively there is various microorganism, and organic content is high, sewage salinity is high.Their can corroding metal e-quipment and pipe, and salinity or the high oilfield sewage of content of acid gas even cause pipeline " perforation " phenomenon.
Find according to the investigation to China's second largest oil field one Shengli Oil Field in 2003, the statistics of 11 oil recovery factory more than 8000 mouth water injection wells, total length 1583 myriametre, average corrosion rate reaches 1.5 millimeters, year, average bore rate reaches 2.4 times, (km *).At part heavy losses block, the pipeline replacement cycle is less than 3 years, the shortest only has 3 months, more than 90% is had to cause because of corrosion in the water injection string scrapped, the tubing string that whole Shengli Oil Field causes due to corrosion, piping material expense direct economic loss reaches more than 300,000,000 yuan, and normal work can be affected owing to changing tubing string, pipeline and produce, the indirect economic loss caused has 1,000,000,000 yuan more than.And at the bottom of the pipeline of each elephant in the whole nation and tubing string to calendar year 2001, amounting to up to 1O more than hundred million rice, the loss of this respect is more respectively up to 10,000,000,000 yuan with about 100,000,000,000 yuan.The metallic corrosion problem that visible oil-field flooding causes not only causes huge financial loss, the more serious normal production that have impact on oil field, brings the negative impact being difficult to expect.
The patent No. is that CN201410061468.1 name is called in a kind of anti-incrustation corrosion inhibitor for oil-field flooding and preparation method thereof and refer to a kind of oil field reinjection water inhibiter, this inhibiter improves scale resistance, oil soluble, pH value adaptability, improves the infiltration scale removal to dirty layer.But containing Amino Trimethylene Phosphonic Acid in this inhibiter, corrosive nature can be had to copper and alloy thereof.And use terpolymer, cost is higher.
Corrosion inhibitor for oil field reinjection water provided by the invention, can react at metallic surface and iron ion or ferric oxide and generate a kind of cancellated opacity protective membrane, can suppress the corrosion of iron, thus play corrosion inhibitive function.In addition, this corrosion inhibitor for oil field reinjection water also has the performance of scale inhibition simultaneously, can reduce the deposition of calcium carbonate on heat exchanger tube wall and can reduce the deposition of calcium sulfate in water.
Summary of the invention
The object of the present invention is to provide a kind of inhibiter of oil field reinjection water; There is good corrosion mitigating effect; To the multiple dirt such as calcium carbonate, calcium sulfate, there is excellent restraining effect and good dissemination.Meanwhile, this inhibiter component is simple, raw material is easy to get, with low cost, toxicity is low.
The technical solution adopted in the present invention is as follows:
A kind of corrosion inhibitor for oil field reinjection water, containing imidazoline quaternary ammonium salt, organic phosphonate, tannin and deionized water.The weight percent of each component is:
Deionized water 30 ~ 60%
Imidazoline quaternary ammonium salt 15 ~ 65%
Tannin 5 ~ 20%
Organic phosphonate 2 ~ 15%.
Described organic phosphonate is one or more in hexamethylene-diamine tetramethylene phosphonic acid, 2-phosphonate group-1,2,4-butane tricarboxylate, ethylenediamine tetramethylene phosphonic acid, hexamethylene-diamine tetramethylene phosphonic acid sodium, sodium ethylenediamine tetramethylenephosphonate.
The preparation method of described a kind of corrosion inhibitor for oil field reinjection water: add the deionized water of 30 ~ 60% in a kettle.; Then in reactor, the tannin of 5 ~ 10% is added, mix and blend 30 ~ 60 minutes; In the solution after above-mentioned stirring, add the imidazoline quaternary ammonium salt of 15 ~ 63% and the organophosphate of 2 ~ 15%, and stir 15 ~ 30 minutes.
Embodiment one
Choose raw material by weight percentage
Deionized water 30%
Imidazoline quaternary ammonium salt 45%
Tannin 10%
2-phosphonate group-1,2,4-butane tricarboxylate 15%
Add the deionized water of 30% in a kettle.; Then in reactor, the tannin of 10% is added, mix and blend 30 ~ 60 minutes; The imidazoline quaternary ammonium salt of 45% and 2-phosphonate group-1,2, the 4-butane tricarboxylate of 15% in the solution after above-mentioned stirring, and stir 15 ~ 30 minutes.
Embodiment two
Choose raw material by weight percentage
Deionized water 40%
Imidazoline quaternary ammonium salt 30%
Tannin 20%
Sodium ethylenediamine tetramethylenephosphonate 10%
Add the deionized water of 40% in a kettle.; Then in reactor, the tannin of 20% is added, mix and blend 30 ~ 60 minutes; The imidazoline quaternary ammonium salt of 30% and the sodium ethylenediamine tetramethylenephosphonate of 10% in the solution after above-mentioned stirring, and stir 15 ~ 30 minutes.
Test an inhibition coupon test
| Embodiment | Test piece classification | Lacing film original weight (g) | After corrosion removal (g) | Weightless (g) | Corrosion rate mm/a |
| Blank | A3 | 21.242 | 21.18845 | 0.0542 | 0.1275 |
| Embodiment 1 | A3 | 20.2406 | 20.22425 | 0.01635 | 0.03618 |
| Embodiment 2 | A3 | 20.5887 | 20.56685 | 0.02185 | 0.04922 |
Inhibition coupon test of the present invention adopts western Xinjiang oil field reinjection water.500mL Erlenmeyer flask 2min is blown with carbon dioxide steel cylinder.Add the inhibiter 3mL of 0.6% in Erlenmeyer flask, oil field reinjection water is put into Erlenmeyer flask to bottleneck from end opening, then blows 2min with nitrogen.Each Erlenmeyer flask is linked into 1 A3 lacing film, plastic packaging, puts in the thermostat container of 50 DEG C and reacts 7 days.Do the blank without medicament simultaneously.
Note: lacing film area 28cm
2; The blank mass loss 0.0011 of A3 pickling.
From corrosion coupon testing data result, all corrosion rate of embodiment 1 and embodiment 2 carbon steel are respectively 0.03618 and 0.04922.To on the corrosion inhibition of carbon steel, the corrosion inhibition of inhibiter of the present invention is more excellent.
Claims (4)
1. a corrosion inhibitor for oil field reinjection water, containing imidazoline quaternary ammonium salt, organic phosphonate, tannin and deionized water.
2. corrosion inhibitor for oil field reinjection water according to claim 1, the weight percent of each component is:
Deionized water 30 ~ 60%
Imidazoline quaternary ammonium salt 15 ~ 65%
Tannin 5 ~ 20%
Organic phosphonate 2 ~ 15%.
3. corrosion inhibitor for oil field reinjection water according to claim 1, it is characterized in that: described organic phosphonate is hexamethylene-diamine tetramethylene phosphonic acid, 2-phosphonate group-1, one or more in 2,4-butane tricarboxylate, ethylenediamine tetramethylene phosphonic acid, hexamethylene-diamine tetramethylene phosphonic acid sodium, sodium ethylenediamine tetramethylenephosphonate.
4. according to corrosion inhibitor for oil field reinjection water described in claim 1, it is characterized in that: the preparation method of described a kind of corrosion inhibitor for oil field reinjection water: add the deionized water of 30 ~ 60% in a kettle.; Then in reactor, the tannin of 5 ~ 10% is added, mix and blend 30 ~ 60 minutes; In the solution after above-mentioned stirring, add the imidazoline quaternary ammonium salt of 15 ~ 63% and the organophosphate of 2 ~ 15%, and stir 15 ~ 30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510868590.4A CN105483712A (en) | 2015-12-02 | 2015-12-02 | Corrosion inhibitor for oil field reinjection water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510868590.4A CN105483712A (en) | 2015-12-02 | 2015-12-02 | Corrosion inhibitor for oil field reinjection water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105483712A true CN105483712A (en) | 2016-04-13 |
Family
ID=55670970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510868590.4A Pending CN105483712A (en) | 2015-12-02 | 2015-12-02 | Corrosion inhibitor for oil field reinjection water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105483712A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114728863A (en) * | 2019-10-29 | 2022-07-08 | 索理思科技开曼公司 | CaSO reduction in pressure oxidation autoclaves and/or adjacent circuits4And Fe2O3Formation of deposits |
-
2015
- 2015-12-02 CN CN201510868590.4A patent/CN105483712A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114728863A (en) * | 2019-10-29 | 2022-07-08 | 索理思科技开曼公司 | CaSO reduction in pressure oxidation autoclaves and/or adjacent circuits4And Fe2O3Formation of deposits |
| CN114728863B (en) * | 2019-10-29 | 2023-09-12 | 索理思科技开曼公司 | Reduction of CaSO content in pressure oxidation autoclave and/or adjacent loop 4 And Fe (Fe) 2 O 3 Deposit formation |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160413 |
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| WD01 | Invention patent application deemed withdrawn after publication |