CN101117574A - Thermostable super-heavy crude viscosity-reducing agent and preparation and using method thereof - Google Patents
Thermostable super-heavy crude viscosity-reducing agent and preparation and using method thereof Download PDFInfo
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- CN101117574A CN101117574A CNA2007100438815A CN200710043881A CN101117574A CN 101117574 A CN101117574 A CN 101117574A CN A2007100438815 A CNA2007100438815 A CN A2007100438815A CN 200710043881 A CN200710043881 A CN 200710043881A CN 101117574 A CN101117574 A CN 101117574A
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Abstract
The present invention provides thermo-tolerant high efficient super dense oil viscosity depressant and its preparation and application methods. The viscosity depressant is formed by compositing surface active agent, accelerant and regulator according to a certain mass ratio. When about 50 to 1500ppm of the viscosity depressant is used, the viscosity of super dense oil at 50 DEG C with viscosity of 26200.0mPa.s and 33300.0mPa.s can be lowed more than 99 percent. The thermo-tolerant performance of the viscosity depressant is good, the viscosity depressant can form stable oil-in-water emulsion. The emulsion can be broken by using an emulsion splitter method. The viscosity depressant does not have any influence to the crude oil transportation process and the crude oil refinery process. The using volume of the viscosity depressant of the present invention is little, the viscosity depressing effect is good, the production cost is low, no waste water, waste gas and waste impurity can be produced, the preparation process is simple, thereby the present invention is suitable for batch production.
Description
Technical field
The invention belongs to the oilfield chemical technology field, relate to a kind of viscosity-depression agent and preparation using method thereof that is used for special viscous oil recovery and conveying.
Background technology
Viscous crude contains colloid, bituminous matter height, and the viscosity height is mobile poorer than great, gives the exploitation in oil field and collects the defeated very big difficulty of bringing.The common method of heavy crude producing is thermal recovery technology such as steam stimulation and steam flood both at home and abroad, energy consumption height, cost height.And the oil field also be faced with to the bad heavy oil wells of cementing quality can't gas injecting mining and superheated vapour displacement of reservoir oil method also be subjected to the reservoir depth restriction and to difficult problems such as the exploitation effect of deep-layer heavy crude are too poor.Reduce viscosity of thickened oil except that the steam flood method, also have emulsification to disperse the viscosity reduction method, by adding emulsifying pour depressor, make crude oil form low viscous O/W type milk sap, thereby crude oil fluidity is greatly improved, improve oil recovery factor, make it easy to normal exploitation, be simple a, economy, valid approach, and this viscosity-depression agent is added to can realize also in the viscous crude of extraction that the normal temperature low viscosity carries.At lacking the high temperature high efficiency super-heavy crude viscosity-reducing agent that can inject with steam at present and can using at normal temperatures, again can be at high temperature the effective problem of viscosity-depression agent, a kind of efficient super-heavy crude viscosity-reducing agent provided by the invention, can high temperature resistantly can inject effective viscosity reduction and exploit special viscous crude with steam, reduce injecting steam pressure, save cost, again can the temperature remains within the normal range the low viscosity of special viscous oil emulsion down, can realize that the normal temperature low viscosity of special viscous crude is carried.
Summary of the invention
The object of the present invention is to provide a kind of super-heavy crude viscosity-reducing agent that under normal temperature and high temperature, all is suitable for and preparation using method thereof.
The present invention is achieved through the following technical solutions:
A kind of super-heavy crude viscosity-reducing agent is characterized in that, described viscosity-depression agent is composited by tensio-active agent, promotor, conditioning agent, and its composition and ratio of weight and number are as follows:
Tensio-active agent 1
Promotor 0-2
Conditioning agent 8-60
Said tensio-active agent is organic acid and the newly-generated salt of alkali neutralization reaction, has general formula and is: X-Y-Z, and wherein X is an alkyl, the structure that has is: CnH2n+1-, CnH2n-1-, CnH2n-1-(CH
2) n-,
N=8～30, preferred n=12～20,
Y is an acidic-group, and the structure that has is :-COOH ,-COO-,-SO
3H ,-SO
3-,-OSO
3H ,-OSO
3 -,-OPO
3H ,-OPO
3-O-(CH
2CH
2O-) n-OSO
3,-O-(CH
2CH
2O-) n-OSO
3-,
Z is a basic group, and the structure that has is: K
+, Na
+, NH
4, NH
2CH
2CH
2NH
2, NH
2CH
2CH
2OH, NH (CH
2CH
2OH)
2, N (CH
2CH
2OH)
3
Said promotor is one or more mixtures in hydro carbons, hydrocarbon oxide and the derivative thereof;
Said conditioning agent is can regulate the pH value scope of composite emulsifying viscosity-depression agent and the alkaline matter that makes its PH=7～9, for being selected from NaOH, KOH, Na
2CO
3, NaHCO
3, K
2CO
3, KHCO
3, Na
3PO
4, Na
2HPO
4, NaH
2PO
4, K
3PO
4, K
2HPO
4, KH
2One or more mixture of PO.
The present invention also provides the preparation method of the compound viscosity-depression agent of above-mentioned special viscous crude, it is characterized in that, 1), with the organic acid of the above-mentioned Y of having with have 1: 1 in molar ratio the ratio neutralization reaction of alkali of Z said method may further comprise the steps:, 10～250 ℃ of temperature of reaction, preferred 60～150 ℃, reaction times is 2～6 hours, is good with 2～4 hours, makes tensio-active agent;
2), tensio-active agent that step 1) is made and promotor by ratio of weight and the number of copies 1: the 0-2 uniform mixing obtains host;
3), with tensio-active agent 8-60 doubly the conditioning agent of (ratio of weight and number) join step 2) in the host that obtains, make compound viscosity-depression agent.
The present invention provides the using method of above-mentioned compound viscosity-depression agent simultaneously, it is characterized in that, water is 0.01～1% concentration with its dilution during use, by 70: 30 mass ratio of water oil ratio, adds in the special viscous crude under 30～90 ℃ of temperature condition and carries out reducing viscosity by emulsifying.
Wherein said water can be ortho-water.
The invention has the advantages that: 1, the viscosity-depression agent consumption is few, and cost is low, and viscosity reducing effect is good, and viscosity break ratio reaches more than 99%; 2, heat resistance is good, reaches as high as 350 ℃; 3, preparation technology is simple, and the no three wastes are fit to produce in batches.
Embodiment
Below in conjunction with embodiment in detail method of the present invention is described in detail.
1～6 special viscous crude 1# of example at viscosity reduction, its density 0.9586g/cm
3(20 ℃), 19 ℃ of condensation points contain colloid 30.22%, bituminous matter 1.17%, 0.38%, 50 ℃ of viscosity 26200.0mPa.s of wax content, 25 ℃ of viscosity are 202700.0mPa.s.
Example 1
Take by weighing the 35g aqueous sodium hydroxide solution and add in the reactor that band stirs, add the 88g molecular-weight average again and be the mixed organic acid (can be the industrial production by product) of C12～C18 of 245, warming while stirring is at normal pressure, 80～100 ℃ of reaction 2～4h; Stop heating, be chilled to normal temperature, can is the host product.
During use, get the special viscous crude 1# of about 50g in band plug vial, the water bath with thermostatic control constant temperature 1h under 75 ℃; Get example 1 host product 3～5g, to wherein adding the conditioning agent aqueous sodium carbonate, make its PH=7～9, be mixed with compound viscosity-depression agent, water is 0.1～1% concentration with compound viscosity-depression agent dilution, the water bath with thermostatic control constant temperature 0.5h under 75 ℃; Under 75 ℃ of service temperatures, by example 1 compound viscosity-depression agent consumption is that 1016.8ppm, water oil ratio are that 70: 30 mass ratio will dilute compound viscosity-depression agent and join gradually among the special viscous crude 1#, stirred 5～10 minutes with glass stick while adding, it is mixed, form special viscous oil emulsion.Put then to place under the room temperature and use its viscosity of rotary viscosity instrumentation after 48 hours, and observe its uniform and stable property.Viscosity reducing effect sees Table 1.
Example 2
Take by weighing the 50g aqueous sodium hydroxide solution and add in the reactor that band stirs, add the 100g molecular-weight average again and be the mixed organic acid (can be the industrial production by product) of C12～C18 of 250, warming while stirring is at normal pressure, 80～100 ℃ of reaction 2～3h; Stop heating, add the mixture that 150g promotor is toluene and dimethylbenzene (can be the industrial production by product) while stirring, continue to stir 0.5～1h; Be chilled to normal temperature, can is the host product.It is same to working method and example 1 that special viscous crude 1# carries out reducing viscosity by emulsifying, 90 ℃ of concrete operations temperature, and the consumption of example 2 compound viscosity-depression agents is 434.8ppm, viscosity reducing effect sees Table 1.
Example 3
Take by weighing the 50g aqueous sodium hydroxide solution and add in the reactor that band stirs, add the 100g molecular-weight average again and be the mixed organic acid (can be the industrial production by product) of C12～C18 of 265, warming while stirring is at normal pressure, 80～100 ℃ of reaction 2～3h; Stop heating, adding 150g promotor while stirring is the industrial solvent (can be the industrial production by product) of 200～350 ℃ of boiling ranges, continues to stir 0.5～1h; Be chilled to normal temperature, can is the host product.It is same to working method and example 1 that special viscous crude 1# carries out reducing viscosity by emulsifying, 75 ℃ of concrete operations temperature, and the consumption of example 3 compound viscosity-depression agents is 556.3ppm, viscosity reducing effect sees Table 1.
Example 4
Get example 3 host products special viscous crude 1# is carried out reducing viscosity by emulsifying, working method and example 1 are same, 30 ℃ of concrete operations temperature, and the consumption of example 4 compound viscosity-depression agents is 918.3ppm, viscosity reducing effect sees Table 1.
Example 5
Get example 3 host products special viscous crude 1# is carried out reducing viscosity by emulsifying, working method and example 1 are same, 60 ℃ of concrete operations temperature, and the consumption of example 5 compound viscosity-depression agents is 648.4ppm, viscosity reducing effect sees Table 1.
Example 6
Get example 3 host products special viscous crude 1# is carried out reducing viscosity by emulsifying, working method and example 1 are same, 75 ℃ of concrete operations temperature, and the consumption of example 6 compound viscosity-depression agents is 613.9ppm, viscosity reducing effect sees Table 1.
Table 1
| Special viscous crude 1# viscosity (mPa.s) (25 ℃) | Service temperature ℃ | Viscosity-depression agent consumption ppm | Special viscous crude 1# milk sap viscosity (mPa.s, 25 ℃) | Viscosity break ratio (%) | The viscosity reduction multiple | |
| Embodiment 1 | 202700.0 | 75 | 1016.8 | 121.1 | 99.940 | 1673.8 |
| Embodiment 2 | 202700.0 | 90 | 434.8 | 87.4 | 99.957 | 2319.2 |
| Embodiment 3 | 202700.0 | 75 | 556.3 | 184.2 | 99.909 | 1100.4 |
| Embodiment 4 | 202700.0 | 30 | 918.3 | 73.4 | 99.964 | 2761.6 |
| Embodiment 5 | 202700.0 | 60 | 648.4 | 162.1 | 99.920 | 1250.5 |
| Embodiment 6 | 202700.0 | 75 | 613.9 | 165.8 | 99.918 | 1222.6 |
7～8 special viscous crude 2# of embodiment at viscosity reduction, its density 0.9562g/cm
3(20 ℃), 15 ℃ of condensation points contain colloid 16.25%, bituminous matter 3.87%, 1.99%, 50 ℃ of viscosity 33300.0mPa.s of wax content, 30 ℃ of viscosity 192400.0mPa.s.
Example 7
Get the special viscous crude 2# of about 50g in band plug vial, the water bath with thermostatic control constant temperature 1h under 75 ℃; Get example 3 host products 3～5g, to wherein adding the conditioning agent aqueous sodium carbonate, make its PH=7～8, be mixed with compound viscosity-depression agent, water is 0.01～0.05% concentration with compound viscosity-depression agent dilution, the water bath with thermostatic control constant temperature 0.5h under 75 ℃; Under 75 ℃ of service temperatures, by example 7 compound viscosity-depression agent consumptions is that 33.1ppm, water oil ratio are that 70: 30 mass ratio will dilute compound viscosity-depression agent and join gradually among the special viscous crude 2#, stirred 5～10 minutes with glass stick while adding, it is mixed, form special viscous oil emulsion.Put then to place under the room temperature and use its viscosity of rotary viscosity instrumentation after 48 hours, and observe its uniform and stable property.Viscosity reducing effect sees Table 2.
Example 8
Get example 3 host products special viscous crude 2# is carried out reducing viscosity by emulsifying, working method and example 7 are same, 75 ℃ of concrete operations temperature, and the consumption of example 8 compound viscosity-depression agents is 42.4ppm, viscosity reducing effect sees Table 2.
Table 2
| Special viscous crude 2# viscosity (mPa.s) (30 ℃) | Service temperature ℃ | Viscosity-depression agent consumption ppm | Special viscous crude 2# milk sap viscosity (mPa.s, 30 ℃) | Viscosity break ratio (%) | The viscosity reduction multiple | |
| Embodiment 7 | 192400.0 | 75 | 33.1 | 142.4 | 99.926 | 1351.1 |
| Embodiment 8 | 192400.0 | 75 | 42.4 | 66.9 | 99.965 | 2875.9 |
Claims (6)
1. a thermostable super-heavy crude viscosity-reducing agent is characterized in that, described viscosity-depression agent is composited by tensio-active agent, promotor, conditioning agent, and its composition and ratio of weight and number are as follows:
Tensio-active agent 1
Promotor 0-2
Conditioning agent 8-60
Said tensio-active agent is organic acid and the newly-generated salt of alkali neutralization reaction, has general formula and is: X-Y-Z,
Wherein X is an alkyl, and the structure that has is: CnH2n+1-, and CnH2n-1-,
CnH2n-1-(CH
2)n-，
n＝8～30，
Y is an acidic-group, and the structure that has is :-COOH ,-COO-,-SO
3H ,-SO
3-,-OSO
3H ,-OSO
3 -,-OPO
3H ,-OPO
3-O-(CH
2CH
2O-) n-OSO
3,-O-(CH
2CH
2O-) n-OSO
3-,
Z is a basic group, and the structure that has is: K
+, Na
+, NH
4, NH
2CH
2CH
2NH
2, NH
2CH
2CH
2OH, NH (CH
2CH
2OH)
2, N (CH
2CH
2OH)
3
Said promotor is one or more the mixture in hydro carbons, hydrocarbon oxide and the derivative thereof;
Said conditioning agent is for being selected from NaOH, KOH, Na
2CO
3, NaHCO
3, K
2CO
3, KHCO
3, Na
3PO
4, Na
2HPO
4, NaH
2PO
4, K
3PO
4, K
2HPO
4, KH
2One or more mixture of PO.
2. thermostable super-heavy crude viscosity-reducing agent as claimed in claim 1 is characterized in that, n=10 in the alkyl radical structure of described tensio-active agent～20.
3. the preparation method of thermostable super-heavy crude viscosity-reducing agent as claimed in claim 1 is characterized in that, said method may further comprise the steps:
1), with the organic acid of the above-mentioned Y of having with have 1: 1 in molar ratio the ratio neutralization reaction of alkaline solution of Z, 10～250 ℃ of temperature of reaction, the reaction times is 2～6 hours, makes tensio-active agent;
2), tensio-active agent that step 1) is made and promotor by ratio of weight and the number of copies 1: the 0-2 uniform mixing obtains host;
3), by ratio of weight and the number of copies, tensio-active agent 8-60 conditioning agent is doubly joined step 2) in the host that obtains, make compound viscosity-depression agent.
4. the preparation method of thermostable super-heavy crude viscosity-reducing agent as claimed in claim 3 is characterized in that, temperature of reaction is 60～150 ℃ in the step 1), and the reaction times is 2～4 hours.
5. the using method of thermostable super-heavy crude viscosity-reducing agent as claimed in claim 1, it is characterized in that, during use, water is 0.01～1% concentration with described super-heavy crude viscosity-reducing agent by the quality dilution, by 70: 30 mass ratio of water oil ratio, under 30～90 ℃ of temperature condition, add in the special viscous crude and carry out reducing viscosity by emulsifying.
6. the using method of thermostable super-heavy crude viscosity-reducing agent as claimed in claim 5 is characterized in that, said water is ortho-water.
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|---|---|---|---|
| CNA2007100438815A CN101117574A (en) | 2007-07-17 | 2007-07-17 | Thermostable super-heavy crude viscosity-reducing agent and preparation and using method thereof |
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|---|---|---|---|
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613291B (en) * | 2009-07-31 | 2012-06-27 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Water-soluble phase-permeable viscosity reducer and preparation method thereof |
| CN102109094B (en) * | 2009-12-29 | 2012-12-12 | 中国石油天然气股份有限公司 | Pipeline transportation process method for wax-containing crude oil by adding viscosity-reducing and pour-point-reducing composition |
| CN101735115B (en) * | 2008-11-18 | 2013-06-05 | 长江大学 | Salt resistance and calcium resistant deep extra-heavy oil emulsifier and viscosity dropping agent |
| CN103468235A (en) * | 2013-09-26 | 2013-12-25 | 东北石油大学 | Chemical assistant for thermal recovery of thick oil and application thereof |
| CN103509541A (en) * | 2012-06-19 | 2014-01-15 | 中国石油化工股份有限公司 | Micro-emulsion viscosity reducer for thick oil, and preparation method thereof |
| CN104534279A (en) * | 2014-12-22 | 2015-04-22 | 山东东明石化集团有限公司 | Method for conveying 380# fuel oil at normal temperature through long-distance pipeline |
| CN105121937A (en) * | 2012-12-28 | 2015-12-02 | 维尔萨利斯股份公司 | Method for reducing the pressure drop associated with a fluid subjected to a turbulent flow |
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2007
- 2007-07-17 CN CNA2007100438815A patent/CN101117574A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735115B (en) * | 2008-11-18 | 2013-06-05 | 长江大学 | Salt resistance and calcium resistant deep extra-heavy oil emulsifier and viscosity dropping agent |
| CN101613291B (en) * | 2009-07-31 | 2012-06-27 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Water-soluble phase-permeable viscosity reducer and preparation method thereof |
| CN102109094B (en) * | 2009-12-29 | 2012-12-12 | 中国石油天然气股份有限公司 | Pipeline transportation process method for wax-containing crude oil by adding viscosity-reducing and pour-point-reducing composition |
| CN103509541A (en) * | 2012-06-19 | 2014-01-15 | 中国石油化工股份有限公司 | Micro-emulsion viscosity reducer for thick oil, and preparation method thereof |
| CN105121937A (en) * | 2012-12-28 | 2015-12-02 | 维尔萨利斯股份公司 | Method for reducing the pressure drop associated with a fluid subjected to a turbulent flow |
| CN103468235A (en) * | 2013-09-26 | 2013-12-25 | 东北石油大学 | Chemical assistant for thermal recovery of thick oil and application thereof |
| CN104534279A (en) * | 2014-12-22 | 2015-04-22 | 山东东明石化集团有限公司 | Method for conveying 380# fuel oil at normal temperature through long-distance pipeline |
| CN104534279B (en) * | 2014-12-22 | 2015-12-30 | 山东东明石化集团有限公司 | A kind of method of long-distance pipe normal temperature conveying 380# fuel oil |
| CN105487475A (en) * | 2015-12-08 | 2016-04-13 | 成都德善能科技有限公司 | Intelligent preparation system and method for thickened oil air injection oxidation viscosity reduction catalyst |
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