CN102140335A - Alkali-free oil displacement agent containing double long-chain s-triazine type ampholytic surfactant - Google Patents
Alkali-free oil displacement agent containing double long-chain s-triazine type ampholytic surfactant Download PDFInfo
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- CN102140335A CN102140335A CN2011100087849A CN201110008784A CN102140335A CN 102140335 A CN102140335 A CN 102140335A CN 2011100087849 A CN2011100087849 A CN 2011100087849A CN 201110008784 A CN201110008784 A CN 201110008784A CN 102140335 A CN102140335 A CN 102140335A
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 25
- JIHQDMXYYFUGFV-UHFFFAOYSA-N 1,3,5-triazine Chemical compound C1=NC=NC=N1 JIHQDMXYYFUGFV-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 title abstract description 20
- 239000002563 ionic surfactant Substances 0.000 title abstract 2
- 239000007864 aqueous solution Substances 0.000 claims abstract description 7
- 239000010779 crude oil Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000011734 sodium Substances 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 13
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 12
- 229910052708 sodium Inorganic materials 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000004088 simulation Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000003513 alkali Substances 0.000 abstract description 12
- 239000004094 surface-active agent Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 238000013375 chromatographic separation Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000008398 formation water Substances 0.000 abstract 1
- 229960003080 taurine Drugs 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 31
- 238000012360 testing method Methods 0.000 description 14
- 239000013543 active substance Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- -1 alkylbenzene sulfonate Chemical class 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012452 mother liquor Substances 0.000 description 3
- FOGYNLXERPKEGN-UHFFFAOYSA-N 3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfopropyl)phenoxy]propane-1-sulfonic acid Chemical class COC1=CC=CC(CC(CS(O)(=O)=O)OC=2C(=CC(CCCS(O)(=O)=O)=CC=2)OC)=C1O FOGYNLXERPKEGN-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 150000002193 fatty amides Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 235000019357 lignosulphonate Nutrition 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000011206 ternary composite Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of oil exploitation and relates to an alkali-free oil displacement agent containing a double long-chain s-triazine type ampholytic surfactant. The surfactant is N-methyl-N-(4,6-di-aliphatic amino-1,3,5-s-triazine-2-yl)-2-aminoethanesulfonic acid sodium salt; and the surfactant and aqueous solution are mixed evenly at the room temperature to fully dissolve the surfactant and obtain the oil displacement agent; and the surfactant can be used alone or be combined with the homologue. The oil displacement system can both reach the 10<-3>mN/m order of ultralow interfacial tension at 45 DEG C and 70 DEG C under the alkali-free condition and has the good capability of reducing the crude oi-formation water interfacial tension, thus the damage of the alkali in the alkali-containing system on formation can be avoided and the sustainable development of oil exploitation is easy to realize. The oil displacement system is suitable for different reservoirs and has higher adaptability; and the oil displacement agent has simple composition and can be used to overcome the reduction of the oil displacement efficiency to a certain extent, caused by the chromatographic separation effect.
Description
Technical field
The invention belongs to technical field of petroleum extraction, relate to a kind of couple of long-chain s-triazine amphoterics N-methyl-N-(4,6-two fatty amidos-1,3,5-guanamine-yl)-2-aminoethyl sulfonic acid sodium, the non-base oil-displacing agent of the remaining crude oil in stratum after the water displacing oil that is used for gathering.
Background technology
Oil is a kind of important energy and industrial chemicals, also is the grand strategy goods and materials of a country simultaneously, and the development of a country is had very important influence.Formation crude oil is after the water injection technology displacement of reservoir oil when oil production, can only exploit out about 40% of workable reserve, the extraction of a large amount of remaining crude oil need be with the method (being tertiary oil recovery) of intensified oil reduction, could further improve the recovery ratio of crude oil like this, the chemical displacement of reservoir oil is one of main direction of intensified oil reduction technology.
In the chemical displacement of reservoir oil, no matter be abroad or domestic, ternary composite driving is that to improve recovery ratio optimal always, but the alkali that injects can cause that the stratum clay disperses and migration, causes zone permeability to descend; Alkali and reservoir fluid and rock forming mineral reaction form the alkali dirt, and the stratum is damaged, and influence the oilfield exploitation ordinary production and cause holddown and pipeline damage; The alkali that adds can reduce the visco-elasticity of polymkeric substance significantly, thereby reduces swept volume etc., influences the recovery ratio of crude oil.
The tensio-active agent that is used for tertiary oil recovery at present is mainly sulfonated petro-leum, heavy alkylbenzene sulfonate and lignosulfonic acid salt.China National Petroleum Corporation (CNPC) proposes a kind of alkyl naphthalene sulfonic acid salt anionic surfactant of straight or branched as oil-displacing agent in CN1171292A, but these tensio-active agents can not reduce to ultralow (10 with the interfacial tension between crude oil/water usually under the alkali-free condition
-3The mN/m order of magnitude is following).People such as Li Zongshi its oil-displacing agent in a kind of chemical oil displacement agent that contains the fatty amide modified sulfonated lignin of long carbochain that CN1327026 proposes can use separately, also can compositely use, could reduce to the interfacial tension between crude oil/water ultralow but need to add alkali in the system.Though sulfonated petro-leum, heavy alkylbenzene sulfonate and lignosulfonic acid salt tensio-active agent wide material sources are described, the excellent properties of tensio-active agent also all be unable to do without the existence of alkali.And in the research for the alkali-free flooding system, people such as Chen Hong need not add the ability that alkali just has good reduction crude oil/water interfacial tension at cation Gemini surfactant that CN1528853A proposes in as oil-displacing agent, and overcome the displacement of reservoir oil rate that existing oil-displacing agent causes because of the chromatographic separation phenomenon and descended, but cationic surfactant can adsorb in a large number on the stratum, causes the oil-displacing agent loss.Cui has just just waited the people at CN101549266A report synthetic double long-chain alkyl lycine amphoterics, and use can not make oil water interfacial tension reduce to 10 separately
-3The mN/m order of magnitude has only by just making oil water interfacial tension reduce to 10 with other surfactant compound or after adding polymkeric substance
-3The mN/m order of magnitude.It is that raw material synthetic tensio-active agent can reach ultra low interfacial tension under the condition of alkali-free that people such as Liu Chunde propose in CN1730149A with the alkylbenzene, can independent or composite use, can also add salt or auxiliary agent etc. simultaneously.The surfactant composition that contains aliphatic alcohol polyoxyethylene sulfonate, polymkeric substance and water that people such as Zhang Weidong propose in CN101280179A can be as the non-base oil-displacing agent under the high temperature and high salt condition.
Summary of the invention
The object of the present invention is to provide a kind of N-of containing methyl-N-(4,6-two fatty amidos-1,3, the oil-displacing agent of 5-guanamine-yl)-2-aminoethyl sulfonic acid sodium amphoterics under the alkali-free condition, can form ultra low interfacial tension with crude oil.
Design of the present invention is: a kind of component (mass percent) that contains the non-base oil-displacing agent of two long-chain s-triazine amphotericses comprising:
1) two long-chain s-triazine amphotericses 0.005 ~ 1.000%;
2) aqueous solution surplus.
Wherein, two long-chain s-triazine amphotericses be N-methyl-N-(4,6-two fatty amidos-1,3,5-guanamine-yl)-2-aminoethyl sulfonic acid sodium amphoterics, its general structure is:
In the formula, R
1=C
nH
2n+1, n=6,8,10,12,14,16,18; R
2=C
mH
2m+1, m=6,8,10,12; N and m can be identical also can be inequality, R
1And R
2The total number of carbon atoms be 12～28;
The aqueous solution is the preparation water of salinity under the Simulation of Crude Oil stratum.
The two long-chain s-triazine amphotericses and the aqueous solution are mixed under normal temperature condition by described proportioning, stir to dissolving fully.If use separately, can directly take this oil-displacing agent that configures; Also can with the composite use of its homologue, its compound proportion is 0 ~ 100%(mass percent).
Effect of the present invention and benefit are: two long-chain s-triazine amphotericses are the chemical agent for intensified oil production of the stable performance used of a kind of alkali-free displacement of reservoir oil, do not add auxiliary agents such as alkali and can in the broad surfactant concentration ranges, have good ultralow ability that crude oil/local water interfacial tension is reduced to, avoided having that alkali helps the Sustainable development of oil production to the injury on stratum in the alkali systems; Under 45 ℃, 70 ℃ conditions, good effect is arranged all, have stronger adaptability; It is comparatively single that oil-displacing agent is formed, and can overcome the chromatographic separation effect to a certain extent and the oil displacement efficiency that causes descends.
Description of drawings
Fig. 1 be crude oil/local water interfacial tension over time, get surfactant concentration and be: 0.005%, 0.0125% and 0.1%.
Fig. 2 be crude oil/local water interfacial tension over time, get two kinds of surfactant compound ratios and be: 9:1,15:1,24:1 and 49:1.
Embodiment
If no special instructions, the test condition of employing is as follows:
Condition determination 1:
1. testing tool: an interfacial tensimeter is dripped in the rotation of TX500C type
2. temperature: 45 ℃
3. crude oil: the grand celebration four factory's crude oil (oil densities: 0.845g/cm that recover the oil
3)
4. water: preparation water (water-mineralizing degree: NaHCO
3, 2.272 g/L; Na
2CO
3, 0.5088 g/L; KCl, 1.408 g/L; CaCl
2, 0.03885g/L; Na
2SO
4, 0.27365 g/L; MgCl
2, 0.0752 g/L)
Condition determination 2:
1. testing tool: an interfacial tensimeter is dripped in the rotation of TX500C type
2. temperature: 45 ℃
3. crude oil: the grand celebration two factory's crude oil (oil densities: 0.845g/cm that recover the oil
3)
4. water: preparation water (water-mineralizing degree: NaHCO
3, 2.15 g/L; MgSO
4, 0.024 g/L; CaCl
2, 0.111g/L; KCl, 1.013 g/L; Na
2CO
3, 0.233 g/L)
Condition determination 3:
1. testing tool: an interfacial tensimeter is dripped in the rotation of TX500C type
2. temperature: 70 ℃
3. crude oil: Shengli Oil Field crude oil (oil density: 0.845g/cm
3)
4. water: preparation water (water-mineralizing degree: NaHCO
3, 5.0753 g/L; NaCl, 4.1472 g/L; CaCl
2, 0.03820g/L; MgCl
2, 0.0088 g/L)
If no special instructions, the test procedure that adopts among the embodiment is as follows:
1. the preparation of oil-displacing agent component
Tensio-active agent is mixed with the 1%(mass percent with the water of above-mentioned condition determination) mother liquor.Single oil-displacing agent component is directly to take out and be mixed with the solution to be measured of different content from mother liquor; The solution to be measured of composite oil-displacing agent component is according to survey tensio-active agent total content and compound proportion, takes out required corresponding amount and mix from mother liquor separately, and be settled to desired concn;
2. measure
Open rotation and drip interfacial tensimeter and computer, the preheating rotation is dripped interfacial tensimeter to measuring temperature.Solution to be measured is being measured constant temperature under the temperature.Extract solution to be measured with syringe, rinse centrifuge tube 4 ~ 5 times.After solution to be measured filled with centrifuge tube, inject crude oil with microsyringe.Rapidly centrifuge tube is installed to rotation and drips on the interfacial tensimeter, regulating rotating speed is 5000 rev/mins, the oil droplet width of record different time, and instrument software directly provides the interfacial tension value under the different time.
1), two long-chain s-triazine amphoterics alkali-free displacement of reservoir oil prescription, component is as follows, is mass percent:
N-methyl-N-(4-amino dodecane base-6-octylame base-1,3, the 5-guanamine-yl)-2-aminoethyl sulfonic acid sodium 0.05% ~ 1.00%
Preparation mineralized water surplus
2), test condition: condition determination 1
3) and the interfacial tension result between crude oil.
Embodiment 2
1), two long-chain s-triazine amphoterics alkali-free displacement of reservoir oil prescription, component is as follows, is mass percent:
N-methyl-N-(4-decyl amine base-6-octylame base-1,3, the 5-guanamine-yl)-2-aminoethyl sulfonic acid sodium 0.0125% ~ 1.0000%
Preparation mineralized water surplus
2), test condition: test condition 1
3) and the interfacial tension result between crude oil.
1), two long-chain s-triazine amphoterics alkali-free displacement of reservoir oil prescription, component is as follows, is mass percent:
N-methyl-N-(4-decyl amine base-6-octylame base-1,3, the 5-guanamine-yl)-2-aminoethyl sulfonic acid sodium 0.005% ~ 1.000%
Preparation mineralized water surplus
2), test condition: condition determination 2
3) and the interfacial tension result between crude oil.
Interfacial tension over time, as shown in Figure 1.
1), two long-chain s-triazine amphoterics alkali-free displacement of reservoir oil prescription, component is as follows, is mass percent:
N-methyl-N-(4-decyl amine base-6-octylame base-1,3, the 5-guanamine-yl)-2-aminoethyl sulfonic acid sodium 0.005% ~ 1.000%
Preparation mineralized water surplus
2), test condition: test condition 3
3) and the interfacial tension result between crude oil.
Embodiment 5
1), two long-chain s-triazine amphoterics alkali-free displacement of reservoir oil prescriptions, component is as follows, be mass percent: N-methyl-N-(4-amino dodecane base-6-octylame base-1,3, the 5-guanamine-yl)-2-aminoethyl sulfonic acid sodium (A-DCT12-8) and N-methyl-N-(4,6-Di-Octyl amine base-1,3, the 5-guanamine-yl)-2-aminoethyl sulfonic acid sodium (A-DCT8-8) compound system 0.1%
Preparation mineralized water surplus
2), test condition: test condition 1
3) and the interfacial tension measurement result between crude oil.
Interfacial tension over time, as shown in Figure 2.
Embodiment 6
1), two long-chain s-triazine amphoterics alkali-free displacement of reservoir oil prescription, component is as follows, is mass percent:
N-methyl-N-(4-amino dodecane base-6-octylame base-1,3, the 5-guanamine-yl)-2-aminoethyl sulfonic acid sodium (A-DCT12-8) and N-methyl-N-(4-decyl amine base-6-octylame base-1,3, the 5-guanamine-yl)-2-aminoethyl sulfonic acid sodium (A-DCT10-8) compound system 0.05%
Preparation mineralized water surplus
2), test condition: test condition 2
3) and the interfacial tension measurement result between crude oil.
Claims (4)
1. non-base oil-displacing agent that contains two long-chain s-triazine amphotericses is characterized in that the component of this non-base oil-displacing agent is by mass percentage:
1) two long-chain s-triazine amphotericses 0.005 ~ 1.000%;
2) aqueous solution surplus;
And adopt following method preparation: the two long-chain s-triazine amphotericses and the aqueous solution are mixed according to the above ratio, stir to dissolving fully under normal temperature condition.
2. a kind of non-base oil-displacing agent that contains two long-chain s-triazine amphotericses as claimed in claim 1, it is characterized in that, used two long-chain s-triazine amphotericses are N-methyl-N-(4,6-two fatty amidos-1,3, the 5-guanamine-yl)-2-aminoethyl sulfonic acid sodium amphoterics, its general structure is:
In the formula, R
1=C
nH
2n+1, n=6,8,10,12,14,16,18; R
2=C
mH
2m+1, m=6,8,10,12; R
1And R
2The total number of carbon atoms be 12～28.
3. a kind of non-base oil-displacing agent that contains two long-chain s-triazine amphotericses as claimed in claim 1 is characterized in that aqueous solutions employed is the preparation water of salinity under the Simulation of Crude Oil stratum.
4. a kind of non-base oil-displacing agent that contains two long-chain s-triazine amphotericses as claimed in claim 1, it is characterized in that, described pair of long-chain s-triazine amphoterics can use separately, also can with the composite use of its homologue, its compound proportion is 0 ~ 100%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110008784 CN102140335B (en) | 2011-01-17 | 2011-01-17 | Alkali-free oil displacement agent containing double long-chain s-triazine type ampholytic surfactant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110008784 CN102140335B (en) | 2011-01-17 | 2011-01-17 | Alkali-free oil displacement agent containing double long-chain s-triazine type ampholytic surfactant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102140335A true CN102140335A (en) | 2011-08-03 |
| CN102140335B CN102140335B (en) | 2013-01-16 |
Family
ID=44408133
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703048A (en) * | 2012-04-26 | 2012-10-03 | 合肥新星油田化学剂有限责任公司 | Efficient salt-tolerant high-temperature-resistant oil displacement agent for heavy oil reservoirs and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054514A (en) * | 2007-05-21 | 2007-10-17 | 孙安顺 | Alkylaniline carboxylate or sulphonate surfactant |
| CN101298554A (en) * | 2008-07-07 | 2008-11-05 | 大庆石油管理局 | Surfactant for oil displacement, formula system thereof and use thereof in tertiary recovery of crude oil |
| CN101343254A (en) * | 2008-07-09 | 2009-01-14 | 中北大学 | Gemini surfactant containing triazine ring |
| CN101618300A (en) * | 2009-08-05 | 2010-01-06 | 中北大学 | Trimerization anion surface active agent |
-
2011
- 2011-01-17 CN CN 201110008784 patent/CN102140335B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054514A (en) * | 2007-05-21 | 2007-10-17 | 孙安顺 | Alkylaniline carboxylate or sulphonate surfactant |
| CN101298554A (en) * | 2008-07-07 | 2008-11-05 | 大庆石油管理局 | Surfactant for oil displacement, formula system thereof and use thereof in tertiary recovery of crude oil |
| CN101343254A (en) * | 2008-07-09 | 2009-01-14 | 中北大学 | Gemini surfactant containing triazine ring |
| CN101618300A (en) * | 2009-08-05 | 2010-01-06 | 中北大学 | Trimerization anion surface active agent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703048A (en) * | 2012-04-26 | 2012-10-03 | 合肥新星油田化学剂有限责任公司 | Efficient salt-tolerant high-temperature-resistant oil displacement agent for heavy oil reservoirs and preparation method thereof |
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| CN102140335B (en) | 2013-01-16 |
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