CN101613597A - Dispersion drag-reduction agent for high-salinity thick oil - Google Patents
Dispersion drag-reduction agent for high-salinity thick oil Download PDFInfo
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- CN101613597A CN101613597A CN200910017094A CN200910017094A CN101613597A CN 101613597 A CN101613597 A CN 101613597A CN 200910017094 A CN200910017094 A CN 200910017094A CN 200910017094 A CN200910017094 A CN 200910017094A CN 101613597 A CN101613597 A CN 101613597A
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- salinity
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Abstract
The invention discloses a kind of dispersion drag-reduction agent for high-salinity thick oil, its weight part ratio consists of: unsaturated polyether 90-70 part, alkylsulfonate 0.5-5 part, PE-D25-30 part.This kind dispersion drag-reduction agent for high-salinity thick oil has good wetting emulsification dissemination to the viscous crude of high salinity, can make high salinity crude oil be dispersed in the water rapidly, can tolerate the salinity scope is: alkaline-resisting metal-salt is at 2000-200000mg/L, alkaline-resisting earth metal salt 0-20000mg/L.
Description
Technical field
The present invention relates to a kind of dispersion drag-reduction agent for high-salinity thick oil that is used for oil field high-salinity thick oil exploitation and transports.
Background technology
The salinity height of local water in the crude oil reservoir, viscosity of crude is big, is high-salinity thick oil.The patent No. is that 98120311 Chinese patent discloses " a kind of viscosity reducer for crude oil ", it is by following the composition (percentage ratio by weight): xylogen (0-55), AES (12-16), polyacrylamide (1-10), tripoly phosphate sodium STPP (2.5-5), sodium hydroxide (0-5), and through mixing together.The technology that this patent provides is to adopt surfactant compound to make emulsification of crude oil disperse viscosity reduction, but does not show that this promoting agent compound system can be used for the dispersion viscosity reduction to high-salinity thick oil.
The patent inventor had once applied for the patent of " a kind of novel crude oil drag reduction viscosity-depression agent " in 2002, and obtained the authorization China Patent No.: 02159001.It is easy that this patent is used for low mineralization reservoir thick-oil emulsified adhesive-reducing.But to high salinity reservoir viscous crude because the brinish surface tension is than high many of low salinity water, and general promoting agent the brinish surface tension is reduced to form O/W milk sap be difficult.Owing to the electrostatic double layer of various salt at different pressure and temperature condition lower compression disperse phase, very big to the type and the stability influence of crude oil emulsion, particularly the empty inhibition effect of alkaline earth salt makes the profit system very easily form the W/O system in addition.
Summary of the invention
The objective of the invention is to overcome the defective that exists in the above-mentioned technology, a kind of dispersion drag-reduction agent for high-salinity thick oil is provided.
The present invention's technical scheme of taking of dealing with problems is:
Dispersion drag-reduction agent for high-salinity thick oil, its weight part ratio consists of: unsaturated polyether 90-70 part, alkylsulfonate 0.5-5 part, PE-D2 5-30 part.
In the above-mentioned dispersion drag-reduction agent for high-salinity thick oil, the synthetic method of described unsaturated polyether is:
1) in synthesis reactor, adds a certain amount of polyethers, be heated to 40 ℃-50 ℃ then, be melted to evenly;
2) slowly add hydrophilization reagent under nitrogen protection in synthesis reactor, the limit edged stirs, and keeps 40 ℃-50 ℃, adds in 1-2 hour;
3) reactant in the synthesis reactor is warming up to 80 ℃-85 ℃, is incubated 1-1.5 hour, then acid or alkali are made into the aqueous solution that massfraction is 15%-20%, slowly add in the synthesis reactor under 38 ℃-42 ℃, the limit edged stirs, and is transferred to 7.5-8.5 to pH.
In the synthetic method of described unsaturated polyether, the mol ratio of described polyethers and hydrophilization reagent is 1: 0.05-1.
Described polyethers is polyoxyethylene polyoxypropylene ether block copolymers or Soxylat A 25-7.
Described polyoxyethylene polyoxypropylene ether block copolymers is that the unsaturated organic initiators that has reactive hydrogen causes propylene oxide, the oxyethane addition copolymerization generates, and having the unsaturated organic initiators of reactive hydrogen and the mol ratio of oxyethane is 1: 1-50.The molecular weight control of polyethenoxy ether is at 500-20000 in the described polyoxyethylene polyoxypropylene ether block copolymers, and oxyethane accounts for the 10%-70% of polyoxyethylene polyoxypropylene ether block copolymers quality.
Described Soxylat A 25-7 is that the unsaturated organic initiators that has reactive hydrogen causes the generation of oxyethane addition copolymerization.
The unsaturated organic initiators that has reactive hydrogen comprises: unsaturated alcohol (as vinyl carbinol, unsaturated polyol and organic oxygen base allyloxy alkyl alcohol), unsaturated acid (as oleic acid), unsaturated amine (as oleyl amine), the purity of described initiator is more than the 99wt% and below the moisture 0.1wt%.
Described hydrophilization reagent is sulphuric anhydride or sulfur sesquioxide or oleum or chlorsulfonic acid or thionamic acid or Vanadium Pentoxide in FLAKES or Tripyrophosphoric acid or ortho-phosphoric acid or phosphoryl chloride.
Described alkali or acid be in the energy and unsaturated polyether to the neutral bronsted lowry acids and bases bronsted lowry.
Alkyl in the described alkylsulfonate is any one in dodecyl, 12-18 mixed alkyl, the oil alkyl.
Salt in the described alkylsulfonate is alkali metal salts or ammonium salt.
Dispersion drag-reduction agent for high-salinity thick oil of the present invention compared with prior art has the following advantages:
1, the composite back of unsaturated polyether and alkylsulfonate tool reduces the surface tension of concentrated water to concentrated water, viscous crude to high salinity has good wetting emulsification dissemination, can make high salinity crude oil be dispersed in the water rapidly, can tolerate the salinity scope is: alkaline-resisting metal-salt is at 2000-200000mg/L, alkaline-resisting earth metal salt 0-20000mg/L.
2, owing to add the PE-D2 water-soluble polymers among the present invention, profit is disperseed to form more stable O/W system, further improved crude oil extraction and flow efficiency when the Oil extraction resistance is reduced greatly with unsaturated polyether and the composite back of alkylsulfonate.
Embodiment
Further describe the present invention below in conjunction with embodiment, scope of the present invention is not subjected to the restriction of these embodiment.Scope of the present invention proposes in claims.PE-D2 (this product is put on record and can be looked into by Nanjing Bureau of Technical Supervision)
Embodiment 1
The composition of dispersion drag-reduction agent for high-salinity thick oil:
Constituent mass (Kg)
Unsaturated polyether (technical grade) 128Kg
Alkyl sodium sulfonate (technical grade) 2Kg
PE-D2 (technical grade) 13Kg
Synthesizing of unsaturated polyether:
1) in the synthesis reactor of 1000L, add 361Kg oleic acid polyoxyethylene (technical grade, anhydrous), be heated to 40 ℃ then and be melted to evenly;
2) slowly add chlorsulfonic acid 5.8Kg under nitrogen protection in synthesis reactor, the limit edged stirs, and keeps 40 ℃, adds back maintenance temperature 40 ℃ (± 2 ℃) 1 hour;
3) reactant in the synthesis reactor is warming up to 80 ℃, is incubated 1 hour, then NaOH is made into massfraction 20% aqueous solution, slowly add under 40 ℃ in the synthesis reactor, the limit edged stirs, and is transferred to 8 (± 0.2) to pH.
The preparation of dispersion drag-reduction agent for high-salinity thick oil: weighing alkyl sodium sulfonate and PE-D2 in proportion add the alkylsulphonic acid ammonium in the above-mentioned synthetic unsaturated polyether, and then add the PE-D2 water-soluble polymers, till stirring.
Embodiment 2
The composition of dispersion drag-reduction agent for high-salinity thick oil:
Constituent mass (Kg)
Unsaturated polyether (technical grade) 128Kg
Alkyl sodium sulfonate (technical grade) 5Kg
PE-D2 (technical grade) 10Kg
Synthesizing of unsaturated polyether:
1) in the synthesis reactor of 1000L, adding 255Kg vinyl carbinol polyoxyethylene polyoxypropylene ether (technical grade, anhydrous, its), be heated to 40 ℃ then and be melted to evenly;
2) slowly add chlorsulfonic acid 5.8Kg under nitrogen protection in synthesis reactor, the limit edged stirs, and keeps 40 ℃, adds back maintenance temperature 40 ℃ (± 2 ℃) 1 hour;
3) reactant in the synthesis reactor is warming up to 80 ℃, is incubated 1.5 hours, then NaOH is made into massfraction 20% aqueous solution, slowly add under 40 ℃ in the synthesis reactor, the limit edged stirs, and is transferred to 8 (± 0.2) to pH.
The preparation of dispersion drag-reduction agent for high-salinity thick oil: weighing alkyl sodium sulfonate and PE-D2 in proportion add the alkylsulphonic acid ammonium in the above-mentioned synthetic unsaturated polyether, and then add the PE-D2 water-soluble polymers, till stirring.
Embodiment 3
The anti-salinity test of dispersion drag-reduction agent for high-salinity thick oil of the present invention: earlier dispersion drag-reduction agent for high-salinity thick oil is made into 1%-0.1% active water solution, be added in the oil with the used pump in oil field then, active water solution is 1: 3 with the mass ratio of oil, result such as table 1, table 2.
Table 1
| Prescription | Crude oil salinity mg/L | Viscosity of crude mPa.S | Temperature (℃) | Water oil ratio oil: water | Dosing (PPm) | Crude oil emulsion viscosity (mPa.S) after the dusting power drug | The emulsion type | Stabilising effect |
| Prescription 1 | ??200000 ??mg/L | ??10000 ??0 | ??50 | ??3∶1 | ??500 | ??250 | ??O/W | Stable |
| Prescription 2 | ??100000 ??mg/L | ??80000 | ??50 | ??3∶1 | ??500 | ??200 | ??O/W | Stable |
Table 2
Claims (10)
1, dispersion drag-reduction agent for high-salinity thick oil is characterized in that, its weight part ratio consists of: unsaturated polyether 90-70 part, alkylsulfonate 0.5-5 part, PE-D25-30 part.
According to the described dispersion drag-reduction agent for high-salinity thick oil of claim 1, it is characterized in that 2, the synthetic method of used unsaturated polyether is:
1) in synthesis reactor, adds a certain amount of polyethers, be heated to 40 ℃-50 ℃ then, be melted to evenly;
2) slowly add hydrophilization reagent under nitrogen protection in synthesis reactor, the limit edged stirs, and keeps 40 ℃-50 ℃, adds in 1-2 hour;
3) reactant in the synthesis reactor is warming up to 80 ℃-85 ℃, is incubated 1-1.5 hour, then acid or alkali are made into the aqueous solution that massfraction is 15%-20%, slowly add in the synthesis reactor under 38 ℃-42 ℃, the limit edged stirs, and is transferred to 7.5-8.5 to pH.
According to the described dispersion drag-reduction agent for high-salinity thick oil of claim 2, it is characterized in that 3, the mol ratio of described polyethers and hydrophilization reagent is 1: 0.05-1.
According to the described dispersion drag-reduction agent for high-salinity thick oil of claim 2, it is characterized in that 4, described polyethers is polyoxyethylene polyoxypropylene ether block copolymers or Soxylat A 25-7.
5, according to the described dispersion drag-reduction agent for high-salinity thick oil of claim 4, it is characterized in that, described polyoxyethylene polyoxypropylene ether block copolymers is that the unsaturated organic initiators that has reactive hydrogen causes propylene oxide, the oxyethane addition copolymerization generates, having the unsaturated organic initiators of reactive hydrogen and the mol ratio of oxyethane is 1: 1-50, the molecular weight control of polyethenoxy ether is at 500-20000 in the described polyoxyethylene polyoxypropylene ether block copolymers, and oxyethane accounts for the 10%-70% of polyoxyethylene polyoxypropylene ether block copolymers quality.
According to the described dispersion drag-reduction agent for high-salinity thick oil of claim 4, it is characterized in that 6, described Soxylat A 25-7 is that the unsaturated organic initiators that has reactive hydrogen causes the generation of oxyethane addition copolymerization.
7, according to claim 5 or 6 described dispersion drag-reduction agent for high-salinity thick oil, it is characterized in that, the described unsaturated organic initiators that has reactive hydrogen is unsaturated alcohol or unsaturated acid or unsaturated amine, and the purity of the described unsaturated organic initiators that has a reactive hydrogen is more than the 99wt% and below the moisture 0.1wt%.
According to the described dispersion drag-reduction agent for high-salinity thick oil of claim 7, it is characterized in that 8, described unsaturated alcohol is vinyl carbinol or unsaturated polyol or organic oxygen base allyloxy alkyl alcohol, described unsaturated acid is an oleic acid, and described unsaturated amine is an oleyl amine.
According to the described dispersion drag-reduction agent for high-salinity thick oil of claim 2, it is characterized in that 9, described hydrophilization reagent is sulphuric anhydride or sulfur sesquioxide or oleum or chlorsulfonic acid or thionamic acid or Vanadium Pentoxide in FLAKES or Tripyrophosphoric acid or ortho-phosphoric acid or phosphoryl chloride.
10, according to the described dispersion drag-reduction agent for high-salinity thick oil of claim 1, it is characterized in that, alkyl in the described alkylsulfonate is any one in dodecyl, 12-18 mixed alkyl, the oil alkyl, and the salt in the described alkylsulfonate is alkali metal salts or ammonium salt.
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| CN200910017094A CN101613597A (en) | 2009-07-21 | 2009-07-21 | Dispersion drag-reduction agent for high-salinity thick oil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045226A (en) * | 2013-01-18 | 2013-04-17 | 中国石油化工股份有限公司 | Resistance reducing agent and preparation method thereof, and slickwater fracturing fluid using resistance reducing agent and preparation method thereof |
| CN104232053A (en) * | 2014-09-12 | 2014-12-24 | 大连东方创新科技有限公司 | Block copolymer emulsification enhancement combination flooding composition and application thereof |
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| CN1284856A (en) * | 1997-11-05 | 2001-02-21 | 宝洁公司 | Personal care compositions |
| CN1772686A (en) * | 2005-10-11 | 2006-05-17 | 济南大学 | Carboxylic acid concrete water reducing agent containing unsaturated polyether and its prepn |
| CN1911205A (en) * | 2005-08-08 | 2007-02-14 | 花王株式会社 | Aqueous hair detergent |
| WO2007147787A1 (en) * | 2006-06-20 | 2007-12-27 | Bluestar Silicones France | Siloxane-based lubricating composition releasing no hydrogen, its method of preparation and its use |
-
2009
- 2009-07-21 CN CN200910017094A patent/CN101613597A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284856A (en) * | 1997-11-05 | 2001-02-21 | 宝洁公司 | Personal care compositions |
| CN1911205A (en) * | 2005-08-08 | 2007-02-14 | 花王株式会社 | Aqueous hair detergent |
| CN1772686A (en) * | 2005-10-11 | 2006-05-17 | 济南大学 | Carboxylic acid concrete water reducing agent containing unsaturated polyether and its prepn |
| WO2007147787A1 (en) * | 2006-06-20 | 2007-12-27 | Bluestar Silicones France | Siloxane-based lubricating composition releasing no hydrogen, its method of preparation and its use |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045226A (en) * | 2013-01-18 | 2013-04-17 | 中国石油化工股份有限公司 | Resistance reducing agent and preparation method thereof, and slickwater fracturing fluid using resistance reducing agent and preparation method thereof |
| CN103045226B (en) * | 2013-01-18 | 2015-09-09 | 中国石油化工股份有限公司 | A kind of friction reducer and preparation method thereof and slippery water fracturing liquid using this friction reducer and preparation method thereof |
| CN104232053A (en) * | 2014-09-12 | 2014-12-24 | 大连东方创新科技有限公司 | Block copolymer emulsification enhancement combination flooding composition and application thereof |
| CN104232053B (en) * | 2014-09-12 | 2017-01-11 | 大连东方创新科技有限公司 | Block copolymer emulsification enhancement combination flooding composition and application thereof |
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Application publication date: 20091230 |