CN1090314A - High temperature emulsified wax-inhibitor for deep oil-well and compound method thereof - Google Patents
High temperature emulsified wax-inhibitor for deep oil-well and compound method thereof Download PDFInfo
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- CN1090314A CN1090314A CN 93115290 CN93115290A CN1090314A CN 1090314 A CN1090314 A CN 1090314A CN 93115290 CN93115290 CN 93115290 CN 93115290 A CN93115290 A CN 93115290A CN 1090314 A CN1090314 A CN 1090314A
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Abstract
The oilfield chemical auxiliary that the present invention relates to coagulates the compound method that the oil exploitation provides high temperature emulsified wax-inhibitor and this paraffin inhibitor chemical for deep-well is high.This paraffin inhibitor chemical is formulated with oil soluble paraffin inhibitor chemical, water-soluble active agent, high temperature emulsifying agent and other auxiliary agent.Its compound method is the oil soluble paraffin inhibitor chemical to be dissolved in to become oil-phase solution in the varsol earlier, resynthesis high temperature emulsifying agent, and high temperature emulsifying agent and water-soluble active agent etc. is prepared into aqueous phase solution, at last oil-phase solution and aqueous phase solution are mixed with high temperature emulsified wax-inhibitor.Its principal feature is the inhibiting rate for wax precipitation height, and high thermal resistance is good, and has multiple functions such as wax control, pour point depression, viscosity reduction simultaneously concurrently.
Description
The present invention relates to oilfield chemical auxiliary, especially for the high temperature emulsified wax-inhibitor and the compound method thereof of deep-well oil-extraction.
The solvent property branch is pressed in oil well paraffin prevention agent both at home and abroad at present, and two big classes are arranged: a class is the oil soluble paraffin inhibitor chemical, and another kind of is the water-soluble active agent.The former is oil soluble organic macromolecule polymkeric substance and multipolymer, as the alkyl vinyl ether polymer, and carboxylic acid alkenyl esters polymkeric substance, ethene-vinyl carboxylate copolymer etc.They are dissolved in becomes the oil soluble paraffin inhibitor chemical in the hydrocarbon-type oil.This class paraffin inhibitor chemical has good wax control, pour point depression performance, but because it uses inconvenience at oil well, needs by the vehicle dosing that regularly circulates, and consumption is big, and the energy consumption height so be restricted in oil well applications, now only be used for the long collector tubing of failing and use as pour point depressant.The latter is all kinds of organic polyethers, cationic active agent etc.Utilize its wettability modification wax crystalline substance and metallic surface character, reach the purpose that prevents that wax stone from building up.Though this class paraffin inhibitor chemical is easy to use, wax control result is not ideal enough, and because most of polyethers promoting agent resistance to elevated temperatures is poor, uses so be not suitable for high temperature deep well.
Purpose of the present invention just is to fully utilize the advantage of above-mentioned two class paraffin inhibitor chemicals, overcomes deficiency separately, develops the high innage temperature emulsified wax-inhibitor with fixed attention of a kind of deep-well, and the processing method of this paraffin inhibitor chemical of preparation is provided.This paraffin inhibitor chemical is used for the dark oil well of high temperature can improve inhibiting rate for wax precipitation effectively, prolongs well-flushing and pump detection period, Increasing Production and Energy Saving, and use more simple and convenient.
The present invention adopts following technical proposals to realize:
High temperature emulsified wax-inhibitor for deep oil-well develops with oil soluble paraffin inhibitor chemical, water-soluble active agent and high temperature emulsifying agent.Oil soluble paraffin inhibitor chemical wherein selects for use ethene-vinyl carboxylate copolymer and varsol to be made into, and polyethenoxy alkylphenols is selected in the water-soluble active agent for use, and the high temperature emulsifying agent is selected the olefin(e) acid alcohol amide for use.
Above-mentioned olefin(e) acid alcohol amide is by containing C
15-C
17Thiazolinyl, diene base, the lipid acid of trialkenyl form with monoethanolamine, diethanolamine, trolamine reaction respectively, its weight ratio is 5: 1～4.
The effect of the ethene-vinyl carboxylate copolymer in the high temperature emulsified wax-inhibitor for deep oil-well composition is to change the brilliant surface properties of wax, forms network structure, makes paraffin be difficult for each other assembling, condensing, be adsorbed on the metal wall, thereby reaches the purpose of wax control.The effect of polyethenoxy alkylphenols wherein is to change the brilliant and metallic surface wettability of wax, makes the wax crystalline substance be difficult for gathering, absorption each other, participates in emulsifying effect simultaneously.Olefin(e) acid alcohol amide wherein has very strong emulsifying effect to mineral oil, can strengthen milk sap water-oil interface film strength greatly, forms very firm milk sap.Because its molecular adsorption group is many, bond energy is big, and resistance to elevated temperatures strengthens, even temperature up to 250 ℃, does not reduce its surfactivity yet, this resistance to elevated temperatures for milk sap plays critical crucial effect.
The compound method of high temperature emulsified wax-inhibitor for deep oil-well, carry out according to the following steps:
(1) preferred oil dissolubility paraffin inhibitor chemical-ethene-vinyl carboxylate copolymer;
(2) the preferred good tensio-active agent-polyethenoxy alkylphenols of wettability;
(3) synthesizing high temperature emulsifying agent-olefin(e) acid alcohol amide, reaction signal formula is as follows:
R is C in the formula
15-C
17Thiazolinyl, diene base, trialkenyl etc.
n+m＝3
(4) preparation oil-phase solution A;
(5) preparation aqueous phase solution B;
(6) emulsification moulding.
The preparation method of above-mentioned high temperature emulsifying agent is:
Olefin(e) acid is added organic alcohol amine, and its weight ratio is 5: 1～4, and the pressurization that heats up was reacted 0.5～1 hour, decompression, cooling, vacuum hydro-extraction, and discharging is standby;
The above-mentioned method for preparing oil-phase solution A is: ethene-generating vinyl carboxylate acid copolymer is added in the varsol, and its weight ratio 1: 4 is warming up to 80～100 ℃, and stirring and dissolving is evenly standby;
The above-mentioned method for preparing aqueous phase solution is: olefin(e) acid alcohol amide, polyethenoxy alkylphenols, low mass molecule alcohol are added in the entry, and its weight ratio is 1: 2～3: 3～5: 10, is warming up to 50～60 ℃, and stirring and dissolving is evenly standby;
The method of above-mentioned emulsification moulding is: oil-phase solution A point is added dropwise among the aqueous phase solution B, and its weight ratio is 1: 1, and high-speed stirring emulsification is even, promptly becomes high temperature emulsified wax-inhibitor.
High temperature emulsified wax-inhibitor for deep oil-well of the present invention has following outstanding advantage:
(1) inhibiting rate for wax precipitation height: 〉=70%;
(2) stability is strong: normal temperature＞7d begins breakdown of emulsion;
(3) resistance to elevated temperatures is good: 80 ℃, and 30 minutes beginning breakdowns of emulsion;
(4) zero pour is low :≤-30 ℃;
(5) modest viscosity :≤250mPa.S;
(6) water dispersible is good, storage and easy to use.
Because its wax control result is fine, after high-solidifiability oil well uses, can prolong purge period more than 4 times, prolong pump detection period more than 2 times, oil well production increasing and obvious energy conservation, economic benefit is considerable.
One of high temperature emulsified wax-inhibitor compound method embodiment of the present invention is an example to prepare 360 gram paraffin inhibitor chemicals:
(1) preparation oil-phase solution A
36 gram ethene-vinyl carboxylate copolymer are added in the 144 gram varsols, be warming up to 80～120 ℃, stirring and dissolving is evenly standby;
(2) synthetic eleostearic acid triglycolyl amine
8 gram trolamines are added 20 gram eleostearic acids, and the pressurization that heats up was reacted 0.5～1 hour, decompression, cooling, vacuum hydro-extraction, and discharging is standby;
(3) system aqueous phase solution B
Eleostearic acid triglycolyl amine 10 grams, polyethenoxy alkylphenols 20 grams, low mass molecule alcohol 50 grams are added in the 100 gram water, be warming up to 50～60 ℃, stirring and dissolving is evenly standby;
(4) emulsification moulding
Oil-phase solution A180 gram point is added dropwise among the 180 gram aqueous phase solution B, and high-speed stirring emulsification is even, promptly becomes high temperature emulsified wax-inhibitor.
This paraffin inhibitor chemical can anti-100 ℃ of high temperature, inhibiting rate for wax precipitation 75%, and zero pour is low, and result of use is fine.
Two of high temperature emulsified wax-inhibitor compound method embodiment of the present invention is an example to prepare 340 gram paraffin inhibitor chemicals:
(1) preparation oil-phase solution A
34 gram ethene-vinyl carboxylate copolymer are added in the 136 gram varsols, be warming up to 80～120 ℃, stirring and dissolving is evenly standby;
(2) synthetic linolic acid single ethanol amide
5 gram monoethanolamines are added 20 gram linolic acid, and the pressurization that heats up was reacted 0.5 hour, decompression, cooling, vacuum hydro-extraction, and discharging is standby;
(3) system aqueous phase solution B
Linolic acid single ethanol amide 10 grams, polyethenoxy alkylphenols 30 grams, low mass molecule alcohol 30 grams are added in the 100 gram water, be warming up to 50～60 ℃, stirring and dissolving is evenly standby;
(4) emulsification moulding
Oil-phase solution A140 gram point is added dropwise among the 140 gram aqueous phase solution B, and high-speed stirring emulsification is even, promptly becomes high temperature emulsified wax-inhibitor.
This paraffin inhibitor chemical can anti-80 ℃ of high temperature, and ambient stable began layering more than 7 days, inhibiting rate for wax precipitation 〉=70%, and modest viscosity is used simple, convenient.
Claims (7)
1, a kind of high temperature emulsified wax-inhibitor for deep oil-well, it is characterized in that developing with oil soluble paraffin inhibitor chemical, water-soluble active agent and high temperature emulsifying agent, oil soluble paraffin inhibitor chemical wherein selects for use ethene-vinyl carboxylate copolymer and varsol to be made into, polyethenoxy alkylphenols is selected in the water-soluble active agent for use, and the high temperature emulsifying agent is selected the olefin(e) acid alcohol amide for use.
2, deep-well high temperature emulsified wax-inhibitor according to claim 1 is characterized in that selecting for use the product-olefin(e) acid alcohol amide by olefin(e) acid and organic alcohol amine reaction to make the high temperature emulsifying agent, and olefin(e) acid wherein is for containing C
15-C
17Thiazolinyl, diene base, trialkenyl lipid acid, hydramine is selected monoethanolamine, diethanolamine, trolamine for use.
3, the compound method of high temperature emulsified wax-inhibitor for deep oil-well is characterized in that carrying out according to the following steps:
(1) preferred oil dissolubility paraffin inhibitor chemical-ethene-vinyl carboxylate copolymer;
(2) the preferred good tensio-active agent-polyethenoxy alkylphenols of wettability;
(3) synthesizing high temperature emulsifying agent-olefin(e) acid alcohol amide, reaction signal formula is as follows:
R is C in the formula
15-C
17Thiazolinyl, diene base, trialkenyl etc.
n-m＝3
(4) preparation oil-phase solution A;
(5) preparation aqueous phase solution B;
(6) emulsification moulding.
4, the compound method of high temperature emulsified wax-inhibitor for deep oil-well according to claim 3 is characterized in that selecting for use the olefin(e) acid alcohol amide to make the high temperature emulsifying agent, and the preparation method is as follows:
Olefin(e) acid is added organic alcohol amine, and its weight ratio is 5: 1～4.Heat up and pressurize, reacted 0.5～1 hour, decompression, cooling, vacuum hydro-extraction, discharging is standby;
5, the compound method of high temperature emulsified wax-inhibitor for deep oil-well according to claim 3 is characterized in that the preparation method of oil-phase solution A is:
Ethene-vinyl carboxylate copolymer is added in the varsol, and its weight ratio 1: 4 is warming up to 80～120 ℃, and stirring and dissolving is evenly standby;
6, the compound method of high temperature emulsified wax-inhibitor for deep oil-well according to claim 3 is characterized in that the preparation method of aqueous phase solution B is:
Olefin(e) acid alcohol amide, polyethenoxy alkylphenols, low mass molecule alcohol are added in the entry, and its weight ratio is 1: 2～3: 3～5: 10, is warming up to 50～60 ℃, and stirring and dissolving is evenly standby;
7, the compound method of high temperature emulsified wax-inhibitor for deep oil-well according to claim 3 is characterized in that the method for emulsification moulding is:
Oil-phase solution A point is added dropwise among the aqueous phase solution B, and its weight ratio is 1: 1, and high-speed stirring emulsification is even, promptly becomes high temperature emulsified wax-inhibitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93115290 CN1090314A (en) | 1993-12-29 | 1993-12-29 | High temperature emulsified wax-inhibitor for deep oil-well and compound method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93115290 CN1090314A (en) | 1993-12-29 | 1993-12-29 | High temperature emulsified wax-inhibitor for deep oil-well and compound method thereof |
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| CN1090314A true CN1090314A (en) | 1994-08-03 |
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| CN 93115290 Pending CN1090314A (en) | 1993-12-29 | 1993-12-29 | High temperature emulsified wax-inhibitor for deep oil-well and compound method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888214A (en) * | 2012-10-24 | 2013-01-23 | 吕永恒 | Emulsion-type oil well viscosity-breaking paraffin removing and inhibiting agent and application method thereof |
| CN105038749A (en) * | 2015-08-27 | 2015-11-11 | 山东聚鑫化工有限公司 | Oil-in-water paraffin remover |
| CN106634916A (en) * | 2017-01-19 | 2017-05-10 | 北京奥友兴业科技发展有限公司 | Preparation method of novel water-based viscosity and pour point reducer |
| CN108084982A (en) * | 2016-11-21 | 2018-05-29 | 中国科学院化学研究所 | Nano-viscosity reduction pour-point depressant stable emulsion and its preparation method and application |
| CN109536147A (en) * | 2018-12-05 | 2019-03-29 | 江苏华扬液碳有限责任公司 | A kind of oil well efficient, emulsion-type paraffin remover of safety and preparation method thereof |
| CN109897617A (en) * | 2019-04-23 | 2019-06-18 | 杭州攻守道贸易有限公司 | A kind of high-efficiency oil well paraffin remover |
| US20190382582A1 (en) * | 2016-12-02 | 2019-12-19 | The Willamette Valley Company Llc | Wax-Organic Extender Emulsion and Method for Manufacture Thereof |
| CN111946309A (en) * | 2020-08-10 | 2020-11-17 | 王誉清 | Cold damage prevention dredging agent for low temperature resistant oil reservoir |
-
1993
- 1993-12-29 CN CN 93115290 patent/CN1090314A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888214A (en) * | 2012-10-24 | 2013-01-23 | 吕永恒 | Emulsion-type oil well viscosity-breaking paraffin removing and inhibiting agent and application method thereof |
| CN105038749A (en) * | 2015-08-27 | 2015-11-11 | 山东聚鑫化工有限公司 | Oil-in-water paraffin remover |
| CN108084982A (en) * | 2016-11-21 | 2018-05-29 | 中国科学院化学研究所 | Nano-viscosity reduction pour-point depressant stable emulsion and its preparation method and application |
| US20190382582A1 (en) * | 2016-12-02 | 2019-12-19 | The Willamette Valley Company Llc | Wax-Organic Extender Emulsion and Method for Manufacture Thereof |
| US11591472B2 (en) * | 2016-12-02 | 2023-02-28 | The Williamette Valley Company Llc | Wax-organic extender emulsion and method for manufacture thereof |
| CN106634916A (en) * | 2017-01-19 | 2017-05-10 | 北京奥友兴业科技发展有限公司 | Preparation method of novel water-based viscosity and pour point reducer |
| CN109536147A (en) * | 2018-12-05 | 2019-03-29 | 江苏华扬液碳有限责任公司 | A kind of oil well efficient, emulsion-type paraffin remover of safety and preparation method thereof |
| CN109897617A (en) * | 2019-04-23 | 2019-06-18 | 杭州攻守道贸易有限公司 | A kind of high-efficiency oil well paraffin remover |
| CN111946309A (en) * | 2020-08-10 | 2020-11-17 | 王誉清 | Cold damage prevention dredging agent for low temperature resistant oil reservoir |
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