CN102061155B - Annular protective liquid for water injection well and application thereof - Google Patents
Annular protective liquid for water injection well and application thereof Download PDFInfo
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- CN102061155B CN102061155B CN 200910238207 CN200910238207A CN102061155B CN 102061155 B CN102061155 B CN 102061155B CN 200910238207 CN200910238207 CN 200910238207 CN 200910238207 A CN200910238207 A CN 200910238207A CN 102061155 B CN102061155 B CN 102061155B
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Abstract
The invention relates to multifunctional annular protective liquid for a sleeve for injecting fresh water into an oil field or reinjecting sewage into well oil and application thereof. The annular protective liquid comprises the following components in percentage by weight: 0.1 to 2 percent of amine compound, 0.05 to 0.5 percent of composite phosphate, 0.02 to 0.1 percent of composite quaternary ammonium salt cationic surfactant, 0.01 to 0.02 percent of sulfite and the balance of water. The annular protective liquid is applied to corrosion prevention, scale prevention and sterilization of carbon steel pipe columns of a water injection well, wherein the using amount of a single well is 7 to 15 tons; and the using concentration is 1,000 to 5,000 mg/l. In the annular protective liquid, the corrosion inhibition rate is over 95 percent; the scale inhibition rate is over 90 percent; the sterilizing rate is 100 percent; the change rate of the volume, the hardness and tensile strength of a packer rubber barrel before and after ageing is smaller than +/-2.5 percent; and the elongation rate of the packer rubber barrel before and after ageing is smaller than 5 percent.
Description
Technical field
The present invention relates to a kind of oil field and annotate multi-usage annular protective liquid and the application thereof of clear water or produced-water reinjection well tubing and casing.
Background technology
In the water flooding process, injected water salinity is high, contain the dissolved gas such as aerobic, carbonic acid gas, the corrosion bacterias such as the sulphate reducing bacteria that has simultaneously (SRB), iron bacteria, cause the quiet backwater water quality deterioration of oil jacket annular space, to the seriously corroded of carbon steel oil pipe, sleeve pipe, even corrosion failure occurs, the waste resource is huge in the time of the polluted underground water layer, has become a subject matter of restriction oil field long term stable production.
For many years, more domestic oil fields adopts single or composite chemical agent, but this class chemical agent is only applicable to simple high salinity aqueous systems, and for containing complicated bacterium and CO
2, O
2And H
2Under the S concurrent conditions, particularly according to research O
2Corrosion and CO
2Burn into H
2There are quantitative relation, i.e. a VO between the S corrosion
2=50VCO
2=100VH
2S will control this three kinds of corrosion simultaneously, and difficulty is large, cost is high, is not effectively solved at present.
For above-mentioned present situation, need a kind of multiduty annular protective liquid of research, solve two large problems: one, solve the pollution hidden trouble problem that the water conservation district exists; Two, solve produced-water reinjection inverted well block and decrease the problem of environmental pollution that causes because of the corrosion cover.This system has high-efficient corrosion inhibitor, the sterilant Scale inhibitors feature of holding concurrently, by indoor erosion test test, the High Temperature High Pressure simulation test, field application test solves conventional inhibition system for spot corrosion, pitting and the serious unmanageable gordian technique of high salinity corrosion in water.
Summary of the invention
The annular protective liquid for water injection well that the purpose of this invention is to provide a kind of effective control high salinity, the antiscale of complicated ingredient burn into, sterilization.This annular protective liquid and resident fluid have good compatibleness, and be little on sealing property and the physical strength impact of packing element.
Annular protective liquid for water injection well of the present invention forms 100% counts 0.1～2% amine compound by weight; 0.05～0.5% composite phosphate; 0.02～0.1% compound quaternary ammonium salt cats product, 0.01～0.02% sulphite, all the other are water.
For the high salinity water injection well, contain complicated bacterium and CO
2, O
2And H
2Etching problem under the S concurrent conditions, effect is remarkable.And can in time adjust the system component ratio according to on-the-spot water injection well oil casing corrosion condition, easy to operate.The corrosion inhibition rate of this annular protective liquid reaches more than 95%, and scale inhibition performance is greater than 90%, and sterilizing rate 100% is on volume, hardness and tensile strength velocity of variation impact＜± 2.5% of the aging front and back of pkr rubber packing element, elongation＜5%.
Along with the development of producing, long celebrating oil-field development scope is increasing, relate to urban industry water and rural water scope also more for extensive, what relate to the urban industry water has cities such as Qingcheng County, Wu Banner, Yan'an, Zhidan, relates to the Xifeng area that has of rural water, because some development block produced-water reinjection amounts constantly increase, water quality is not up to standard in addition, be on the rise because corrosion in water causes cover to decrease phenomenon, a lot of water sources all exist the pollution hidden trouble problem, cause safety and environmental protection pressure to increase.
To sum up state, study a kind of multiduty annular protective liquid system, this system because of serious high salinity, and contains complicated bacterium and CO for water injection well
2, O
2And H
2Form casing corrosion perforation seepage Water table under the S concurrent conditions, the polluted underground water that causes, the problems such as restriction oil field long term stable production are effectively solved, and have simultaneously antiscale, germicidal action, have prolonged tubing and casing work-ing life.
Annular protective liquid of the present invention is used for anticorrosion, antiscale and the sterilization of water injection well carbon steel tubing string; 2008; carry out the annular protective liquid filling at the 10 mouthfuls of water injection wells in long celebrating oil field successively; 7～15 tons of individual well consumptions; working concentration 1000～5000mg/l, corrosion inhibition rate are greater than 95%, and scale inhibition performance is greater than 90%; sterilizing rate 100% has prolonged work-ing life of oil casing.
Embodiment
Embodiment 1:
Be to add quantitative water in 1000 liters the steel reactor at a capacity, the adding weight content is 0.1% alkynes oxygen methylamine, stir, measure the pH value of solution, the adding weight content is 0.05% ethylenediamine tetraacetic methyl acid phosphate, stirring and dissolving is complete, add successively weight content again and be 0.02% dodecyl benzyl dimethyl ammonium chloride, weight content is 0.01% sodium sulphite anhydrous 99.3, and surplus is water, stir, namely get this product.
Described composition is used for water injection well in oil fields annular protective liquid, individual well consumption 7～15, working concentration 1000～5000mg/l.
Embodiment 2:
Be to add quantitative water in 1000 liters the steel reactor at a capacity, add weight content and be 2% 1-aminoethyl-2-undecyl imidazole quinoline hydrochloride, stir, measure pH, the adding weight content is 0.5% amido trimethylammonium phosphoric acid, stirring and dissolving is complete, add successively weight content again and be 0.1% dodecyl trimethyl benzyl ammonia chloride, weight content is 0.02% ammonium sulphite, and surplus is water, stir, namely get this product.
Described composition is used for water injection well in oil fields annular protective liquid, 7～15 tons of individual well consumptions, working concentration 1000～5000mg/l.
Embodiment 3:
Be to add quantitative water in 1000 liters the steel reactor at a capacity, add weight content and be 0.5% 1, the 12-n-Laurylamine stirs, measure the pH value of solution, add weight content and be 0.1% diethylenetriamine pentamethylene phosphoric acid, stirring and dissolving is complete, adds successively weight content again and be 0.01% three bay ammonium chlorides, weight content is 0.015% sodium sulphite anhydrous 99.3, surplus is water, stirs, and namely gets this product.
Described composition is used for water injection well in oil fields annular protective liquid, 7～15 tons of individual well consumptions, working concentration 1000～5000mg/l.
Embodiment 4:
Be to add quantitative water in 1000 liters the steel reactor at a capacity, the adding weight content is 1.5% aliphatic amine polyoxyethylene ether, stir, measure the pH value of solution, the adding weight content is 0.05% ethylenediamine tetraacetic methyl acid phosphate, stirring and dissolving is complete, add successively weight content again and be 0.08% two certain herbaceous plants with big flowers base dimethyl oronain, weight content is 0.01% sodium sulphite anhydrous 99.3, and surplus is water, stir, namely get this product.
Described composition is used for water injection well in oil fields annular protective liquid, 7～15 tons of individual well consumptions, working concentration 1000～5000mg/l.
Claims (1)
1. annular protective liquid for water injection well is characterized in that:
Be to add quantitative water in 1000 liters the steel reactor at a capacity, the adding weight content is 0.1% alkynes oxygen methylamine, stir, measure the pH value of solution, the adding weight content is 0.05% ethylenediamine tetraacetic methyl acid phosphate, stirring and dissolving is complete, add successively weight content again and be 0.02% dodecyl benzyl dimethyl ammonium chloride, weight content is 0.01% sodium sulphite anhydrous 99.3, and surplus is water, stir, namely get this product;
Described product is as water injection well in oil fields annular protective liquid, 7～15 tons of individual well consumptions, working concentration 1000～5000mg/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910238207 CN102061155B (en) | 2009-11-17 | 2009-11-17 | Annular protective liquid for water injection well and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910238207 CN102061155B (en) | 2009-11-17 | 2009-11-17 | Annular protective liquid for water injection well and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102061155A CN102061155A (en) | 2011-05-18 |
| CN102061155B true CN102061155B (en) | 2013-10-16 |
Family
ID=43996663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910238207 Active CN102061155B (en) | 2009-11-17 | 2009-11-17 | Annular protective liquid for water injection well and application thereof |
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| Country | Link |
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| CN (1) | CN102061155B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102816560B (en) * | 2012-09-06 | 2014-12-17 | 中国石油化工股份有限公司 | High-temperature annular protection fluid and preparation method thereof |
| CN102977871A (en) * | 2012-11-27 | 2013-03-20 | 唐山市金沙工贸有限公司 | Annulus protection fluid |
| CN104629701A (en) * | 2013-11-08 | 2015-05-20 | 中国石油天然气股份有限公司 | Annulus protective liquid of annulus mechanical seat sealed oil-gas well and applications thereof |
| CN104630784A (en) * | 2015-02-09 | 2015-05-20 | 西安华诺石油技术开发有限公司 | Anti-carbon dioxide corrosion inhibitor and preparation method thereof |
| CN106221686A (en) * | 2016-08-11 | 2016-12-14 | 陕西森瑞石油技术开发有限公司 | High temperature high sulfur gas wells water-soluble imidazoline annular protective liquid |
| CN108251087B (en) * | 2018-01-23 | 2020-10-13 | 中国石油天然气股份有限公司 | Carbon dioxide flooding injection well annulus protection fluid and preparation method and use method thereof |
| CN110295031A (en) * | 2019-07-08 | 2019-10-01 | 威海翔泽新材料科技有限公司 | A kind of oil field annular protective liquid and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5322640A (en) * | 1993-06-01 | 1994-06-21 | Nalco Chemical Company | Water soluble corrosion inhibitors |
| CN101029222A (en) * | 2007-03-23 | 2007-09-05 | 中国石油天然气股份有限公司 | Paraffin-cleaning antiseptic corrosion inhibitor |
-
2009
- 2009-11-17 CN CN 200910238207 patent/CN102061155B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5322640A (en) * | 1993-06-01 | 1994-06-21 | Nalco Chemical Company | Water soluble corrosion inhibitors |
| CN101029222A (en) * | 2007-03-23 | 2007-09-05 | 中国石油天然气股份有限公司 | Paraffin-cleaning antiseptic corrosion inhibitor |
Non-Patent Citations (1)
| Title |
|---|
| 罗立新等."宝浪油田腐蚀因素及防护技术研究与应用".《河南石油》.2003,第17卷(第3期),40-43. |
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| Publication number | Publication date |
|---|---|
| CN102061155A (en) | 2011-05-18 |
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