CN101838526B - Corrosion inhibiting and scale clearing scale inhibitor for oil wells - Google Patents
Corrosion inhibiting and scale clearing scale inhibitor for oil wells Download PDFInfo
- Publication number
- CN101838526B CN101838526B CN 201010180202 CN201010180202A CN101838526B CN 101838526 B CN101838526 B CN 101838526B CN 201010180202 CN201010180202 CN 201010180202 CN 201010180202 A CN201010180202 A CN 201010180202A CN 101838526 B CN101838526 B CN 101838526B
- Authority
- CN
- China
- Prior art keywords
- scale
- percent
- clearing
- corrosion inhibiting
- oil wells
- 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.)
- Active
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a corrosion inhibiting and scale clearing scale inhibitor for oil wells, which is applied to resisting corrosion and inhibiting and clearing scales in the oil extraction process of the oil wells. The corrosion inhibiting and scale clearing scale inhibitor is characterized by comprising the following components in percentage by weight: 1.5 to 2.0 percent of urotropine, 0.2 to 0.3 percent of paraformaldehyde, 0.05 to 0.15 percent of potassium iodide KI, 0.05 to 0.1 percent of emulsifying agent OS-15, 5 to 7.5 percent of hydrochloric acid, 8 to 10 percent of ammonium chloride, 0.05 to 0.1 percent of vitamin B2, 0.01 to 0.03 percent of yeast extract and the balance of water. The corrosion inhibiting and scale clearing scale inhibitor has the advantages that: during routine maintenance of the oil wells, the corrosion inhibiting and scale clearing scale inhibitor is added; under the condition that the ratio of the adding weight of the corrosion inhibiting and scale clearing scale inhibitor to the yield volume of an oil well is 35-50mg/l, the corrosion inhibition rate is over 80 percent, the scale inhibition rate is over 90 percent, and the scale clearing rate is over 75 percent; and the pump detection period of the oil wells is prolonged by more than one time.
Description
Technical field
The present invention relates to petroleum industry chemical technical field, relate in particular to the special treating agent of anti-corrosion, scale-inhibiting snaking in the oil recovery process.
Background technology
Along with the rising of well water, wall erosion appears in the oil well that salinity is high, fouling becomes certainty, and the chemical processing agent that adopts at present mainly is to play anticorrosion, scale effect.China Patent Publication No.: 101100601, " a kind of corrosion-release scale-proof wax-removal viscosity-reducing agent and preparation method thereof " is provided.Be applied to oilfield corrosion-release scale-proof wax-removal viscosity reduction.Use corrosion-release scale-proof wax-removal viscosity-reducing agent at oil well, improved the compatibleness of medicament, both satisfied the wax removal viscosity reduction requirement of oil well, satisfied again anticorrosion, the antiscale requirement of oil well.
The people such as Wang Xianjun are entitled as at the 3rd phase oilfield chemistry magazine in 2003: in the research of the oil well fouling of ternary composite driving mineral reserve and descaling agent and application one literary composition, producing well fouling for Daqing oil field NaOH/ORS-41/HPAM ternary composite driving block is serious. brief analysis the reason of these producing well foulings, the main chemical compositions of dirty sample has: organism (crude oil and polymkeric substance), CaO, MgO etc.; The essential mineral composition is amorphous silica and the spherical calcite of six sides, common calcite and barium sulfate etc.; Less important mineralogical composition is fragmental quartz, feldspar, clay and pyrite etc.; Dirt is formed by coarse grain layer and clay shape particulate layer alternating deposit; The main Types of dirt is silicon dirt and calcium carbonate scale.Developed a kind of descaling agent on the basis of dirt analysis, its totally fill a prescription (mass percent) is: the dirty transforming agent of 10%～15% Compound-acid (hydrofluoric acid, hydrochloric acid, organic acid)+6%～8%+8%～12% sequestrant+2%～4% tensio-active agent+4%～6% inhibiter+water. the corrosion rate to each block oil well dirt of grand celebration during 45 ℃ of this descaling agents is not less than 80%, corrosion reaction can be finished in 2h, and erosion rate only is 0.80g/m
2.h. processed 4 mouthfuls of serious producing wells of fouling with this agent, the each consumption of individual well is 10～20m
3, scaling effect is good, and pump detection period prolongs greatly.
The NHFG oil well cleaning antiscale of Xi'an Hua Nuo Petrotechnik Ltd. exploitation from its company standard, also only has antiscaling rate, and does not have the snaking rate.Stratum antiscale in the injecting process be can be widely used in, calcium, the magnesium in the high recovery well acidization of calcareous composition, the complexing agent of iron ion also can be applicable to.Dosage dispensing according to 10ppm in injected water can generate by establishment dirt thing.Also can be according to being applied to prevent in the acidizing treatment stratum intermediate ion precipitation after certain working concentration dilution.
| Project | Index |
| Outward appearance | Reddish-brown liquid |
| Density (g/cm 3) | ≥0.95 |
| Calcium carbonate antiscaling rate (10ppm) | ≥90 |
| Calcium sulfate antiscaling rate (10ppm) | ≥90 |
| Barium sulfate antiscaling rate % (10ppm) | ≥90 |
The people such as Ma Guangyan are entitled as at the 1st phase oilfield chemistry magazine in 1994: in descaling agent CQ-1 and fatty oil well chemistry snaking technology one literary composition, succeeded in developing the descaling agent that is comprised of main sequestering agent, iron chelating agent, tensio-active agent, dispersion agent and pH adjusting agent etc. for long celebrating oil field.
But these descaling agents all are that its adaptability is restricted for the different scaling type in different oil fields.
Summary of the invention
The objective of the invention is: a kind of corrosion inhibiting and scale clearing scale inhibitor for oil wells and preparation method thereof is provided, when the oil well routine maintenance, add corrosion inhibiting and scale clearing scale inhibitor for oil wells, be in the situation of 35～50mg/l when the corrosion inhibiting and scale clearing scale inhibitor for oil wells dosage, corrosion inhibition rate is greater than 80%, scale inhibition performance is greater than 90%, and the snaking rate is greater than 75%.The pump detection period of oil well prolongs more than 1 times.
The technical solution used in the present invention is:
One, the raw material of corrosion inhibiting and scale clearing scale inhibitor for oil wells and prescription:
Raw material comprises:
1, urotropine (industrial goods);
2, Paraformaldehyde 96 (industrial goods): the poly-formaldehyde of another name; Polymerization formaldehyde; Paraformaldehyde; Solid formaldehyde; The polymerization formaldehyde.Molecular formula (CH
2O)
nOutward appearance and proterties are low-molecular-weight to be white crystalline powder, has the formaldehyde flavor.Paraformaldehyde 96 is mainly used in production and the use of weedicide, also is used for producing synthetic resins (such as artificial horn or artificial ivory) and tackiness agent.Paraformaldehyde 96 is used for the sterilization of pharmaceutical industry (effective constituent of contraception emulsifiable paste) and pharmacy, clothes and bed clothes etc. simultaneously, and Paraformaldehyde 96 also can be used as fumigant, sterilant and sterilant.
3, potassiumiodide KI (industrial goods): potassiumiodide is colourless or white cubic system.Very easily water-soluble, ethanol, acetone and glycerine, the aqueous solution is met the light flavescence, and separates out free-iodine.Potassiumiodide is stablizer and solubility promoter, and the potassiumiodide of feed grade also can be cooked the supplement as iodine in the feed processing.
4, emulsifier os-15 (industrial goods); Its molecular formula is:
5, hydrochloric acid (industrial goods);
6, ammonium chloride (industrial goods);
7, Lin Suanna Vitamin B2 Sodium Phosphate (industrial goods);
8, yeast extract paste (industrial goods);
9, water.
Each weight percentages of components of corrosion inhibiting and scale clearing scale inhibitor for oil wells is:
1, urotropine: 1.5～2.0%;
2, Paraformaldehyde 96: 0.2～0.3%;
3, potassiumiodide (KI): 0.05～0.15%
4, emulsifier os-15:0.05～0.1%;
5, hydrochloric acid: 5～7.5%;
6, ammonium chloride: 8～10%;
7, Lin Suanna Vitamin B2 Sodium Phosphate: 0.05～0.1%;
8, yeast extract paste: 0.01～0.03%;
9, all the other are water; Each weight percentages of components sum is absolutely.
Two, the preparation method of corrosion inhibiting and scale clearing scale inhibitor for oil wells
Major equipment: the enamel reaction still that the 2000L of stirring, heating, cooling and vacuum system is arranged.
Production method: at first, with urotropine and Paraformaldehyde 96, add in the enamel reaction still in proportion; Add again and need to add 5% of entry, after stirring slowly is warmed up to 35～40 ℃ simultaneously, restir 30 minutes; Add in proportion successively potassiumiodide KI, emulsifier os-15, hydrochloric acid and ammonium chloride, Lin Suanna Vitamin B2 Sodium Phosphate, yeast extract paste, stir while adding; Stirred 30 minutes; Add at last the water of remainder and stirred stopped heating 30 minutes; Stir while cooling off, be cooled to normal temperature, obtain corrosion inhibiting and scale clearing scale inhibitor for oil wells.
The using method of corrosion inhibiting and scale clearing scale inhibitor for oil wells: on oil wells in field, the operating personnel regularly adds corrosion inhibiting and scale clearing scale inhibitor for oil wells from the oil jacket annular space of oil well.Adding corrosion inhibiting and scale clearing scale inhibitor for oil wells weight and oilwell produced fluid amount volume ratio is: 35～50mg/l.
Beneficial effect of the present invention: corrosion inhibiting and scale clearing scale inhibitor for oil wells of the present invention, when the oil well routine maintenance, add corrosion inhibiting and scale clearing scale inhibitor for oil wells, be in the situation of 35～50mg/l when corrosion inhibiting and scale clearing scale inhibitor for oil wells adds weight with oil well product volume ratio, corrosion inhibition rate is greater than 80%, scale inhibition performance is greater than 90%, and the snaking rate is greater than 75%.The pump detection period of oil well prolongs more than 1 times.
Embodiment
Embodiment 1: corrosion inhibiting and scale clearing scale inhibitor for oil wells, and each weight percentages of components is:
Urotropine (industrial goods): 1.5%;
Paraformaldehyde 96 (industrial goods): 0.22%;
Potassiumiodide KI (industrial goods): 0.06%
Emulsifier os-15 (industrial goods): 0.05%;
Hydrochloric acid (industrial goods): 7.2%;
Ammonium chloride (industrial goods): 10%;
Lin Suanna Vitamin B2 Sodium Phosphate (industrial goods): 0.05%;
Yeast extract paste (industrial goods): 0.01%;
All the other are water.Each weight percentages of components sum is absolutely.
The preparation method is: at first, and with urotropine and Paraformaldehyde 96, add in the enamel reaction still in proportion; Add again and need to add 5% of entry, after stirring slowly is warmed up to 35～40 ℃ simultaneously, restir 30 minutes; Add in proportion successively potassiumiodide KI, emulsifier os-15, hydrochloric acid and ammonium chloride, stir while adding; Stirred 30 minutes; Add at last the water of remainder and stirred stopped heating 30 minutes; Stir while cooling off, be cooled to normal temperature, obtain corrosion inhibiting and scale clearing scale inhibitor for oil wells.
Effect: be in the situation of 45mg/l when corrosion inhibiting and scale clearing scale inhibitor for oil wells adds weight with oil well product volume ratio, corrosion inhibition rate is 81%, and scale inhibition performance is 93%, and the snaking rate is 77%.The pump detection period of oil well prolongs 1.3 times.
Embodiment 2: corrosion inhibiting and scale clearing scale inhibitor for oil wells, and each weight percentages of components is:
Urotropine (industrial goods): 1.6%;
Paraformaldehyde 96 (industrial goods): 0.24%;
Potassiumiodide KI (industrial goods): 0.09%
Emulsifier os-15 (industrial goods): 0.06%;
Hydrochloric acid (industrial goods): 6.8%;
Ammonium chloride (industrial goods): 9.5%;
Lin Suanna Vitamin B2 Sodium Phosphate (industrial goods): 0.06%;
Yeast extract paste (industrial goods): 0.015%;
All the other are water.Each weight percentages of components sum is absolutely.
The preparation method of embodiment 2 is identical with embodiment 1.
Effect: be in the situation of 50mg/l when corrosion inhibiting and scale clearing scale inhibitor for oil wells adds weight with oil well product volume ratio, corrosion inhibition rate is 83%, and scale inhibition performance is 91%, and the snaking rate is 78%.The pump detection period of oil well prolongs 1.2 times.
Embodiment 3: corrosion inhibiting and scale clearing scale inhibitor for oil wells, and each weight percentages of components is:
Urotropine (industrial goods): 1.7%;
Paraformaldehyde 96 (industrial goods): 0.26%;
Potassiumiodide KI (industrial goods): 0.1%
Emulsifier os-15 (industrial goods): 0.07%;
Hydrochloric acid (industrial goods): 6.2%;
Ammonium chloride (industrial goods): 9%;
Lin Suanna Vitamin B2 Sodium Phosphate (industrial goods): 0.07%;
Yeast extract paste (industrial goods): 0.02%;
All the other are water, and each weight percentages of components sum is absolutely.
The preparation method of embodiment 3 corrosion inhibiting and scale clearing scale inhibitor for oil wells is identical with embodiment 1.
Effect: be in the situation of 37mg/l when corrosion inhibiting and scale clearing scale inhibitor for oil wells adds weight with oil well product volume ratio, corrosion inhibition rate is 84%, and scale inhibition performance is 94%, and the snaking rate is 80%.The pump detection period of oil well prolongs 1.5 times.
Embodiment 4: corrosion inhibiting and scale clearing scale inhibitor for oil wells, and each weight percentages of components is:
Urotropine (industrial goods): 1.8%;
Paraformaldehyde 96 (industrial goods): 0.28%;
Potassiumiodide KI (industrial goods): 0.13%
Emulsifier os-15 (industrial goods): 0.08%;
Hydrochloric acid (industrial goods): 5.5%;
Ammonium chloride (industrial goods): 8.5%;
Lin Suanna Vitamin B2 Sodium Phosphate (industrial goods): 0.08%;
Yeast extract paste (industrial goods): 0.025%;
All the other water are: each weight percentages of components sum is a hundred per cent.
The preparation method of embodiment 4 is identical with embodiment 1.
Effect: be in the situation of 40mg/l when corrosion inhibiting and scale clearing scale inhibitor for oil wells adds weight with oil well product volume ratio, corrosion inhibition rate is 87%, and scale inhibition performance is 94%, and the snaking rate is 80%.The pump detection period of oil well prolongs 1.7 times.
Embodiment 5: corrosion inhibiting and scale clearing scale inhibitor for oil wells, and each weight percentages of components is:
Urotropine (industrial goods): 1.9%;
Paraformaldehyde 96 (industrial goods): 0.3%;
Potassiumiodide KI (industrial goods): 0.15%
Emulsifier os-15 (industrial goods): 0.09%;
Hydrochloric acid (industrial goods): 5.2%;
Ammonium chloride (industrial goods): 8%;
Lin Suanna Vitamin B2 Sodium Phosphate (industrial goods): 0.09%;
Yeast extract paste (industrial goods): 0.03%;
All the other water are; Each weight percentages of components sum is absolutely.
Embodiment 5 preparation methods of corrosion inhibiting and scale clearing scale inhibitor for oil wells are identical with embodiment 1.
Effect: be in the situation of 45mg/l when corrosion inhibiting and scale clearing scale inhibitor for oil wells adds weight with oil well product volume ratio, corrosion inhibition rate is 89%, and scale inhibition performance is 95%, and the snaking rate is 85%.The pump detection period of oil well prolongs about 2 times.
Claims (1)
1. corrosion inhibiting and scale clearing scale inhibitor for oil wells, each weight percentages of components is:
Urotropine: 1.5～2.0%;
Paraformaldehyde 96: 0.2～0.3%;
Potassiumiodide: 0.05～0.15%
Emulsifier os-15:0.05～0.1%;
Hydrochloric acid: 5～7.5%;
Ammonium chloride: 8～10%;
Lin Suanna Vitamin B2 Sodium Phosphate: 0.05～0.1%;
Yeast extract paste: 0.01～0.03%;
All the other are water; Each weight percentages of components sum is absolutely;
Described corrosion inhibiting and scale clearing scale inhibitor for oil wells, its preparation method is: at first, with urotropine and Paraformaldehyde 96, add in the enamel reaction still in proportion; Add again and need to add 5% of entry, after stirring slowly is warmed up to 35～40 ℃ simultaneously, restir 30 minutes; Add in proportion successively potassiumiodide KI, emulsifier os-15, hydrochloric acid and ammonium chloride, Lin Suanna Vitamin B2 Sodium Phosphate, yeast extract paste, stir while adding; Stirred 30 minutes; Add at last the water of remainder and stirred stopped heating 30 minutes; Stir while cooling off, be cooled to normal temperature, obtain corrosion inhibiting and scale clearing scale inhibitor for oil wells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010180202 CN101838526B (en) | 2010-05-18 | 2010-05-18 | Corrosion inhibiting and scale clearing scale inhibitor for oil wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010180202 CN101838526B (en) | 2010-05-18 | 2010-05-18 | Corrosion inhibiting and scale clearing scale inhibitor for oil wells |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101838526A CN101838526A (en) | 2010-09-22 |
| CN101838526B true CN101838526B (en) | 2013-04-24 |
Family
ID=42742205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010180202 Active CN101838526B (en) | 2010-05-18 | 2010-05-18 | Corrosion inhibiting and scale clearing scale inhibitor for oil wells |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101838526B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730866B (en) * | 2011-04-02 | 2014-11-05 | 中国石油化工股份有限公司 | Treatment method of circulating water with leaking wax oil |
| CN102730869B (en) * | 2011-04-02 | 2014-11-05 | 中国石油化工股份有限公司 | Treatment method of circulating water with leaking oil |
| CN103450872B (en) * | 2012-05-28 | 2016-01-20 | 中国石油天然气股份有限公司 | A kind of spontaneous acid system and application thereof |
| CN102766876B (en) * | 2012-07-23 | 2014-04-09 | 辽宁科技大学 | Environment-friendly pickling inhibitor and application thereof in pickling of carbon steel |
| 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 |
| CN103275685B (en) * | 2013-05-13 | 2015-11-18 | 中国石油天然气股份有限公司 | The annular protective liquid of the setting Oil/gas Well of a kind of annular mechanical and construction technology thereof |
| CN108822892A (en) * | 2018-06-29 | 2018-11-16 | 枣庄学院 | In a kind of organic amine and corrosion inhibiter and preparation method thereof |
| CN116478678A (en) * | 2023-04-25 | 2023-07-25 | 成都顺达利聚合物有限公司 | Fracturing acidification high-temperature corrosion inhibitor composition and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101701148A (en) * | 2009-11-17 | 2010-05-05 | 中国石油天然气股份有限公司 | Scale-clearing antiscaling agent of oil wells |
-
2010
- 2010-05-18 CN CN 201010180202 patent/CN101838526B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101701148A (en) * | 2009-11-17 | 2010-05-05 | 中国石油天然气股份有限公司 | Scale-clearing antiscaling agent of oil wells |
Non-Patent Citations (2)
| Title |
|---|
| 任呈强等.油田缓蚀剂研究现状与发展趋势.《精细石油化工进展》.2002,第3卷(第10期),33-37. |
| 油田缓蚀剂研究现状与发展趋势;任呈强等;《精细石油化工进展》;20021031;第3卷(第10期);33-37 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101838526A (en) | 2010-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101838526B (en) | Corrosion inhibiting and scale clearing scale inhibitor for oil wells | |
| CN102250601B (en) | Composite blocking remover for oil well and application method thereof | |
| CN101492599B (en) | Foaming water discharge agent and its preparation | |
| CN103608488B (en) | Corrosion inhibiting composition | |
| CN102899013A (en) | Clastic sandstone gas reservoir acidizing fluid | |
| US20140336089A1 (en) | Scale Inhibitor | |
| CN102161883A (en) | Composite chemical oil displacement agent for tertiary oil recovery in oil field | |
| JPS6193190A (en) | 4-dimethylamino-1-hydroxybutane-1,1-diphosphonic acid and water-soluble salt, manufacture and use | |
| CA2823106C (en) | Families of scale-inhibitors having different absorption profiles and their application in oilfield | |
| CN102311728A (en) | Chemical pressure-reducing injection-increasing agent for injection well and preparation and use thereof | |
| CN101538459B (en) | Oil well pollution-free paraffin removing and viscosity reducing agent | |
| CN105295886A (en) | Composite retarded acid | |
| CN101538457B (en) | Input well composite blockage relieving agent and preparation method thereof | |
| CN106630199A (en) | Preparation method of environment-friendly oilfield reinjection water terpolymer scale inhibitor | |
| CN101215464A (en) | Bottom hole sedimentation type anti-scaling anti-wax agent | |
| US3756257A (en) | Acrylic composition for water treatment and process for making same | |
| CN102633374B (en) | Novel corrosion and scale inhibitor applicable to natural gas heating furnace | |
| CN104098191A (en) | Barium-strontium scale inhibitor for oil extraction in oil fields and preparation method for barium-strontium scale inhibitor | |
| CN101864287A (en) | Composite retarded acid | |
| CN104230011B (en) | Oil extraction in oil field waterflood system resistance barium strontium dirt agent composition and method of making the same | |
| CN102285723A (en) | Dust deposition inhibitor for dedusting water system in steel plant | |
| CN101913713B (en) | Sulfate scale cleaning agent | |
| CN109354222B (en) | Neutral descaling dispersant for oil field | |
| CN101701148B (en) | Scale-clearing antiscaling agent of oil wells | |
| CN102887592A (en) | Scale inhibitor composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |