CN101362941A - Nano molecule deposition film oil-displacing agent and preparation method thereof - Google Patents
Nano molecule deposition film oil-displacing agent and preparation method thereof Download PDFInfo
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- CN101362941A CN101362941A CNA200810079353XA CN200810079353A CN101362941A CN 101362941 A CN101362941 A CN 101362941A CN A200810079353X A CNA200810079353X A CN A200810079353XA CN 200810079353 A CN200810079353 A CN 200810079353A CN 101362941 A CN101362941 A CN 101362941A
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- displacing agent
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Abstract
The invention discloses a nanometer molecule deposition film oil displacement agent and a preparation method thereof; according to the weight, the oil displacement agent comprises 10-20 parts of polymer, 3-30 parts of organic amine and pH regulator; firstly, the organic amine is added; subsequently, the organic amine is mixed, with the reaction temperature of 20-70 DEG C; meanwhile, the pH regulator and the polymer are added at the same time, with the pH value kept between 9.5-10.5; the molar ratio of the polymer and the pH regulator is 1-5:1, with the reaction time of 5-10 hours, thus gaining the nanometer molecule deposition film oil displacement agent. The oil displacement agent forms ultra-thin films on the surface of the rock which is washed by water, reduces the adhesion of the crude oil and the surface of rock, and leads the crude oil to be easily peeled, thus achieving the object of improving the oil yielding rate.
Description
Technical field:
The present invention relates to a kind of oil-displacing agent and preparation method thereof, particularly a kind of nano molecule deposition film oil-displacing agent and preparation method thereof.
Background technology:
At present, in oil production,, need when tertiary oil recovery, to inject a large amount of high molecular polymers, in order to improving the viscosity of injecting liquid, by reducing the mobility control that differences in viscosity between oil, water realizes water to oil well for improving oil yield.But it can not change the character of the interface relation between oil, water, so the oil recovery ability is still limited, can only drive flowable that part crude oil in the oil reservoir, can not start to stick to not runny in a large number oil in the blowhole.And polymer residue is in the oil reservoir rock core, owing to the effect that is stressed for a long time with temperature can bring hidden danger to oil reservoir geology.To using the output oil of polymkeric substance, need carry out numerous and diverse demulsification technology simultaneously.And the residual meeting of polymkeric substance causes the coking problem in the oil following process process, influences the normal operation of oil processing equipment.When the oil field enters the later stage of recovering the oil, in order to realize further improving oil recovery factor, and needs are introduced the tensio-active agent of the synthetic that costs an arm and a leg, to change the physical property between oil, water, reduce oil, water termination tension force, extraction sticks to rock surface and is adsorbed on that part of not runny oil in the rock core pore throat.But tensio-active agent can not improve the viscometric properties of injecting liquid, can not reach the best mobility ratio of injecting liquid, equally also influences the oil well oil yield.
Summary of the invention:
The object of the present invention is to provide a kind ofly on the rock surface that water washes away, form ultrathin membrane, reduce the bonding strength of crude oil and rock surface, make crude oil be stripped from easily, thereby reach nano molecule deposition film oil-displacing agent that improves oil yield and preparation method thereof.
Technical scheme of the present invention is: the nano molecule deposition film oil-displacing agent each component by weight:
High molecular polymer 10-20 part, organic amine 3-30 part and PH adjust agent, add PH and adjust pH value that dosage makes oil-displacing agent of the present invention and get final product between keeping 9.5-10.5;
The method for preparing nano molecule deposition film oil-displacing agent of the present invention: at first add organic amine, begin then to stir, temperature of reaction is 20-70 ℃, drip PH simultaneously and adjust agent and high molecular polymer, pH value keeps between 9.5-10.5, and high molecular polymer: PH adjusts the mol ratio 1--5:1 of agent, and the reaction times is 5---10 hour, can obtain nano molecule deposition film oil-displacing agent of the present invention, its oil-displacing agent cationic degree is 20---100.
As a kind of improvement project of the present invention be: this oil-displacing agent each component by weight:
15 parts of high molecular polymers, 8 parts of organic amines and PH adjust agent, add PH and adjust pH value that dosage makes oil-displacing agent of the present invention and get final product between keeping 9.5-10.5.
As another improvement project of the present invention be: described high molecular polymer is the acrylamide of molecular weight 71.08 or the epoxy chloropropane of molecular weight 92.52.
As another improvement project of the present invention be: described organic amine is dimethylamine, Trimethylamine 99,12 tertiary amines or dibutylamine.
As another improvement project of the present invention be: it is formaldehyde or caustic soda that described PH adjusts agent
Oil-displacing agent solution of the present invention injects after the oil reservoir, and this oil-displacing agent molecule will be adsorbed on the rock surface that is washed away by water, forms ultrathin membrane, has reduced the bonding strength of crude oil and rock surface, makes crude oil be stripped from, and injects the current direction producing well by extraction ground thereby make.The nano molecule deposition film displacement of reservoir oil, mainly be that the nano molecular film is to transmit medium to rely on interionic electrostatic interaction power with the aqueous solution, be adsorbed on the oil reservoir rock surface and form firm unimolecular layer ultrathin membrane, reduced the bonding strength between crude oil and reservoir rocks surface, compare with existing oil-displacing agent, the surface tension and the oil water interfacial tension of its not obvious reduction system, there is not the micella state with the concentration increase, the viscosity that does not also increase solution system changes the profit mobility ratio, but filming function from the close-by examples to those far off advances gradually, under the souring of water, thereby crude oil is constantly stripped down by extraction from the oil reservoir rock surface.Reach the raising oil-water displacement efficiency with this, improve the purpose of oil recovery.Thereby the present invention utilizes the nano molecule deposition film character of its cation-adsorption that the irreducible oil in the rock is peeled off improves recovery ratio, and laboratory test data shows can improve 8-16 percentage point.
Embodiment:
Embodiment 1:
Raw material: the epoxy chloropropane 92kg of molecular weight 92.52, dimethylamine 45kg and caustic soda;
Preparation process:
At first add dimethylamine, begin then to stir, temperature of reaction is 20-70 ℃, drip caustic soda and epoxy chloropropane simultaneously, make pH value keep between 9.5-10.5 epoxy chloropropane: the mol ratio 1--5:1 of caustic soda, the reaction times is 5---10 hour, obtain nano molecule deposition film oil-displacing agent of the present invention, its oil-displacing agent cationic degree is 20---100.
Embodiment 2:
Raw material: molecular weight 71.08 acrylamide 71kg, dibutylamine 35kg and formaldehyde;
Preparation process:
At first add dibutylamine, begin then to stir, temperature of reaction is 20-70 ℃, drip formaldehyde and acrylamide simultaneously, pH value keeps between 9.5-10.5, acrylamide: the mol ratio 1--5:1 of formaldehyde, and the reaction times is 5---10 hour, obtain nano molecule deposition film oil-displacing agent of the present invention, its oil-displacing agent cationic degree is 20---100.
Embodiment 3:
Raw material: molecular weight 71.08 acrylamide 100kg, Trimethylamine 99 115kg and formaldehyde;
Preparation process:
At first add Trimethylamine 99, begin then to stir, temperature of reaction is 20-70 ℃, drip formaldehyde and acrylamide simultaneously, pH value keeps between 9.5-10.5, acrylamide: the mol ratio 1--5:1 of formaldehyde, and the reaction times is 5---10 hour, obtain nano molecule deposition film oil-displacing agent of the present invention, its oil-displacing agent cationic degree is 20---100.
Embodiment 4:
Raw material: the epoxy chloropropane 150kg of molecular weight 92.52,12 tertiary amine 170kg and formaldehyde;
Preparation process:
At first add 12 tertiary amines, begin then to stir, temperature of reaction is 20-70 ℃, drip formaldehyde and epoxy chloropropane simultaneously, pH value keeps between 9.5-10.5, epoxy chloropropane: the mol ratio 1--5:1 of formaldehyde, and the reaction times is 5---10 hour, obtain nano molecule deposition film oil-displacing agent of the present invention, its oil-displacing agent cationic degree is 20---100.
Claims (5)
1, a kind of nano molecule deposition film oil-displacing agent and preparation method thereof is characterized in that: the nano molecule deposition film oil-displacing agent each component by weight:
High molecular polymer 10-20 part, organic amine 3-30 part and PH adjust agent, add PH and adjust pH value that dosage makes oil-displacing agent of the present invention and get final product between keeping 9.5-10.5;
The method for preparing nano molecule deposition film oil-displacing agent of the present invention: at first add organic amine, begin then to stir, temperature of reaction is 20-70 ℃, drip PH simultaneously and adjust agent and high molecular polymer, pH value keeps between 9.5-10.5, and the mol ratio that high molecular polymer: PH adjusts agent is 1-5:1, and the reaction times is 5-10 hour, can obtain nano molecule deposition film oil-displacing agent of the present invention, its oil-displacing agent cationic degree is 20---100.
2, nano molecule deposition film oil-displacing agent according to claim 1 and preparation method thereof is characterized in that: the oil-displacing agent each component by weight:
15 parts of high molecular polymers, 8 parts of organic amines and PH adjust agent, add PH and adjust pH value that dosage makes oil-displacing agent of the present invention and get final product between keeping 9.5-10.5.
3, nano molecule deposition film oil-displacing agent according to claim 1 and 2 and preparation method thereof is characterized in that: described high molecular polymer is the acrylamide of molecular weight 71.08 or the epoxy chloropropane of molecular weight 92.52.
4, nano molecule deposition film oil-displacing agent according to claim 1 and 2 and preparation method thereof is characterized in that: described organic amine is dimethylamine, Trimethylamine 99,12 tertiary amines or dibutylamine.
5, nano molecule deposition film oil-displacing agent according to claim 1 and 2 and preparation method thereof is characterized in that: it is formaldehyde or caustic soda that described PH adjusts agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810079353XA CN101362941A (en) | 2008-09-05 | 2008-09-05 | Nano molecule deposition film oil-displacing agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810079353XA CN101362941A (en) | 2008-09-05 | 2008-09-05 | Nano molecule deposition film oil-displacing agent and preparation method thereof |
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| CN101362941A true CN101362941A (en) | 2009-02-11 |
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| CNA200810079353XA Pending CN101362941A (en) | 2008-09-05 | 2008-09-05 | Nano molecule deposition film oil-displacing agent and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805599A (en) * | 2010-04-16 | 2010-08-18 | 西安石油大学 | Crosslinked polycation oil displacement agent and preparation method thereof |
| CN102173545A (en) * | 2010-12-17 | 2011-09-07 | 榆林学院 | Oily sludge thermochemical separating agent and using method thereof |
| CN105524606A (en) * | 2016-01-19 | 2016-04-27 | 西安邦德石油科技发展有限公司 | Preparing method of nano membrane oil dispersant |
| CN105733542A (en) * | 2016-02-02 | 2016-07-06 | 西安邦德石油科技发展有限公司 | Preparation method and application of multi-component compound chemical oil-displacing agent |
-
2008
- 2008-09-05 CN CNA200810079353XA patent/CN101362941A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805599A (en) * | 2010-04-16 | 2010-08-18 | 西安石油大学 | Crosslinked polycation oil displacement agent and preparation method thereof |
| CN101805599B (en) * | 2010-04-16 | 2013-06-05 | 西安石油大学 | Crosslinked polycation oil displacement agent and preparation method thereof |
| CN102173545A (en) * | 2010-12-17 | 2011-09-07 | 榆林学院 | Oily sludge thermochemical separating agent and using method thereof |
| CN102173545B (en) * | 2010-12-17 | 2012-10-03 | 榆林学院 | Oily sludge thermochemical separating agent and using method thereof |
| CN105524606A (en) * | 2016-01-19 | 2016-04-27 | 西安邦德石油科技发展有限公司 | Preparing method of nano membrane oil dispersant |
| CN105733542A (en) * | 2016-02-02 | 2016-07-06 | 西安邦德石油科技发展有限公司 | Preparation method and application of multi-component compound chemical oil-displacing agent |
| CN105733542B (en) * | 2016-02-02 | 2019-08-30 | 西安邦德石油科技发展有限公司 | The preparation method and application of multiple elements design chemical oil displacement agent |
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Open date: 20090211 |