CN106883833A - For the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir - Google Patents
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Abstract
The invention belongs to field of oilfield chemistry, in particular it relates to it is used for the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir, by mass percentage comprising following components：The aliphatic alcohol polyethenoxy ether carboxylate of 0.30wt%~0.50wt%, the azochlorosulfonate propyl lycine of 0.30wt%~0.50wt%, remaining is water.Oil displacement agent of the invention is prepared by the surfactant of industrialized production, cheap, is applicable to reservoir temperature and is up to 130 DEG C, and total salinity is up to 25 × 104Mg/L, ultrahigh-temperature high salt high rigidity oil reservoir of the calcium ions and magnesium ions at concentrations up to 10000mg/L.Under alkali free environment, it is possible to decrease live oil/water interfacial tension to 10‑3The mN/m orders of magnitude, and it is aging for a long time under the conditions of the high temperature and high salt high rigidity after, interfacial tension ability stabilization is reduced, for ultrahigh-temperature high salt high rigidity oil reservoir further improves recovery ratio and Efficient Development provides technical support.
Description
Technical field
The invention belongs to field of oilfield chemistry, in particular it relates to be used for the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir.
Technical background
As oil field development degree is deepened, domestic conventional oil field has been enter into " double high " stage of High water cut, recovery percent of reserves high,
Recoverable reserves is fewer and feweri, and stable yields difficulty is big, and further raising recovery factor potential is low, and people have to sight trend of purchasing high temperature is high
The harsh conditions such as salt oil field.China's system in Tahe Oilfield, Shengli Oil Field, North China Oilfield, Dagang Oilfield, Zhongyuan Oil Field, Tarim Oilfield
Deng the high temperature and high salt oil deposit that all there are rich reserves.For example, 117 DEG C of the reservoir temperature of the fault block oil reservoir of North China Shanxi 45, prime stratum
Water salinity 8.4 × 104Mg/L, divalent ion 1600mg/L；South Dagang oil field oil area is big, 90 DEG C of formation temperature with
On, salinity is 105More than mg/L；The formation temperature of Tarim Basin part oil field oil reservoir is up to 110~150 DEG C, and salinity is up to
(11~26) × 104Mg/L, the mass concentration of calcium ions and magnesium ions is up to 5000~10000mg/L.Some areas of the main force in these oil fields
Block has had been enter into the production decline stage, therefore to the high-efficiency mining and raising recovery ratio of the harshness oil reservoir such as (spy) high temperature and high salt oil deposit
It is increasingly urgent.
In order to improve oil recovery factor, common polymer drive, alkali drive, surfactant flooding and combination flooding, such as binary or
The chemical flooding method such as ternary composite driving.For high temperature and high salt high rigidity oil reservoir, the chemical flooding method related to polymer, due to poly-
The problems such as thermal degradation of the compound under the harsh conditions, the quick effect of salt and dissolubility difference, therefore, it is difficult to apply；It is related to alkali drive
Chemical flooding method, due to the problems such as fouling is serious under high salt conditions, therefore is also difficult to apply under this condition.It is high for high temperature
Salt high rigidity oil reservoir, surfactant flooding is most potential chemical flooding method, but difficulty is larger.
In order to solve above-mentioned difficulties, research improves the oil displacement agent of oil recovery factor suitable for high temperature and high salt high rigidity oil reservoir,
With great social and economic effects.In recent years, to suitable for high temperature and high salt high rigidity oil reservoir oil displacement surfactant
Research obtains certain progress.For example, CN201310180126.7 is " a kind of for improving the harvesting of high temperature and high salt high rigidity Reservoir Crude Oil
The oil displacement agent and flooding method of rate " discloses one kind by amine oxide type amphoteric surfactant and APES carboxylic acid
Salt compounding displacing surfactant system, the system 100~120 DEG C of temperature, formation water salinity (10~15) ×
104Under mg/L, the reservoir condition of 7000~10000mg/L of calcium ions and magnesium ions total amount, can be by oil water interfacial tension 10-3MN/m quantity
Level, and aging rear stability is good for a long time, improves recovery ratio effect preferable.But its heat-resistant salt-resistant ability cannot still meet similar
In the ultrahigh-temperature high salt high rigidity reservoir condition in the oil fields such as Tarim Basin.A kind of CN201110353793.1 " suitable ultrahigh-temperature high salts
The oil displacement agent of high contents of calcium and magnesium Homogeneous Reservoir " discloses one kind by dialkyl ether disulfonate surfactant, Nonyl pheno
The displacing surfactant system of ether or AEO and absolute ethyl alcohol compounding, the system can be applied to temperature
100~130 DEG C of degree, salinity 5~20 × 104Mg/L, wherein calcium ions and magnesium ions content are 5~15 × 103The ultrahigh-temperature high salt of mg/L
High contents of calcium and magnesium oil reservoir, system has interfacial activity higher, and good heat and salinity tolerance anticalcium magnesium ion ability.But the system
One of primary surfactant agent, dialkyl ether disulfonate surfactant is (the 2- oxygen trimethylene sodium sulfonate -3- alkyl of 1,2- bis-
Ether-propyl) glycol ether is that, by the gemini surfactant (CN201110303538.6) of indoor synthesis, price is held high
It is expensive, and unrealized industrialized production, it is impossible to constructed on a large scale for oil field.
Accordingly, it would be desirable to the oil displacement system of one or more industrialized productions, can be applied to ultrahigh-temperature high salt high rigidity
Oil reservoir, relative low price can be used for oil field and construct on a large scale.It is required that reducing, interfacial tension effect is good, stability is strong, Neng Gouyong
In ultrahigh-temperature high salt high rigidity oil reservoir surfactant flooding, oil recovery factor is improved.
The content of the invention
It is an object of the invention to：Resist for displacing surfactant system temperature-resistant anti-salt in existing raising recovery ratio method
Stiffness capabilities are not enough, it is expensive, cannot be the problems such as scene be applied on a large scale, there is provided one kind has realized industrialized production, price
It is cheap, it is adaptable to the surfactant flooding agent of ultrahigh-temperature high salt high rigidity oil reservoir, displacement efficiency is improved, and then improves crude oil and adopted
Yield.The oil displacement agent is applicable to reservoir temperature and is up to 130 DEG C, and total salinity is up to 25 × 104Mg/L, calcium ions and magnesium ions concentration is high
Up to 1 × 104The ultrahigh-temperature high salt high rigidity oil reservoir of mg/L, oil water interfacial tension can be down to ultralow, and good stability.
To achieve the above object, the present invention uses following scheme：
For the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir, by mass percentage, including following components：
The aliphatic alcohol polyethenoxy ether carboxylate of 0.30wt%~0.50wt%；
The azochlorosulfonate propyl lycine of 0.30wt%~0.50wt%；
Balance of water.
Described aliphatic alcohol polyethenoxy ether carboxylate, with the structure shown in formula 1：
In formula, R1 is the alkyl of carbon number 12~14；N adds sum, preferably 9 for ethoxy group；M be metal from
Son, preferably sodium.
Described azochlorosulfonate propyl lycine, with the structure shown in formula 2：
In formula, R2It is the alkyl that carbon number is 12~18, preferably 12.
The water is total salinity 25 × 104Mg/L, the stratum water of calcium and magnesium bivalent metal ion concentration 10000mg/L.
This is used for the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir, according to quality percentage, by AEO
Carboxylate and azochlorosulfonate propyl lycine, sequentially add in the water of stratum, and stirring and dissolving is uniform.Wherein, aliphatic alcohol polyethenoxy
Ether carboxylate concentration is 0.30wt%~0.50wt%, and azochlorosulfonate propyl lycine concentration is 0.30wt%~0.50wt%, balance of
The stratum water.
One of host of oil displacement system involved in the present invention is azochlorosulfonate propyl lycine, is quaternary ammonium salt amophoteric surface active
Agent, with quaternary ammonium salt cationic and sulfonic group anion.It has chelation to metal ion, shows that good heatproof is resistance to
Salt ability and resistance to hard water.Azochlorosulfonate propyl lycine and aliphatic alcohol polyethenoxy ether carboxylate have and cooperate with work in the present invention
With, both with the good anti-stiffness capabilities of heat and salinity tolerance, tool is significantly reduced oil water interfacial tension effect again, and in ultrahigh-temperature
Under the conditions of high salt high rigidity, good stability.
Compared with prior art, beneficial effects of the present invention are as follows：
(1) oil displacement system of the invention, without adding any alkali, you can reduce live oil/water interfacial tension to 10-3mN/m
The ultralow interfacial tension of the order of magnitude, it is to avoid grievous injury of the fouling of alkali to oil reservoir and equipment.
(2) oil displacement system of the invention, is applicable to reservoir temperature and is up to 130 DEG C, and total salinity is up to 25 × 104mg/
L, calcium ions and magnesium ions are at concentrations up to 1 × 104The ultrahigh-temperature high salt high rigidity oil reservoir of mg/L, and under the conditions of ultrahigh-temperature high salt high rigidity
After aging for a long time, interfacial tension ability stabilization is reduced.For the Efficient Development of ultrahigh-temperature high salt high rigidity oil reservoir provides technology
Support.
(3) oil displacement system of the invention, is prepared by the surfactant for having realized industrialized production, cheap, can
Realize live large-scale application.
Brief description of the drawings
Fig. 1 stability experiment results under the conditions of ultrahigh-temperature high salt high rigidity of the oil displacement system used by embodiment 4；
Fig. 2 stability experiment results under the conditions of ultrahigh-temperature high salt high rigidity of the oil displacement system used by embodiment 5；
Fig. 3 stability experiment results under the conditions of ultrahigh-temperature high salt high rigidity of the oil displacement system used by embodiment 6.
Specific embodiment
It is described in conjunction with the embodiments specific embodiment of the invention.In following examples, water used is oil field stratum water：Always
Salinity 25 × 104Mg/L, Ca2+、Mg2+Ion concentration 1.0 × 104mg/L.Oil used is dehydrated degassed crude for oil field：Ground is former
Oil density 0.87g/cm3, viscosity 19.64mPas.
Embodiment 1
For the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir, quality group turns into：Aliphatic alcohol polyethenoxy ether carboxylate
0.30%, azochlorosulfonate propyl lycine 0.30%, water 99.40%；Specifically each component quality is：
Aliphatic alcohol polyethenoxy ether carboxylate 0.15g；
Azochlorosulfonate propyl lycine 0.15g；
Water 49.70g.
Its preparation method is as follows：
Take 49.70g oil field stratum water, by 0.15g aliphatic alcohol polyethenoxy ether carboxylates and 0.15g azochlorosulfonate propyl lycines according to
In the secondary addition water, clear transparent solutions are evenly stirred until.
The oil displacement system for stirring is injected in ampoule bottle and is sealed, be put into high temperature ageing tank, be placed in 130 DEG C, constant temperature
Aging 7 days, stable state is reached to oil displacement system.After aging end, oil water interfacial tension, interface are determined under reservoir conditions
Power is 8.1 × 10-3mN/m。
Embodiment 2
For the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir, quality group turns into：Aliphatic alcohol polyethenoxy ether carboxylate
0.40%, azochlorosulfonate propyl lycine 0.40%, water 99.20%；Specifically each component quality is：
Aliphatic alcohol polyethenoxy ether carboxylate 0.20g；
Azochlorosulfonate propyl lycine 0.20g；
Water 49.60g.
Its preparation method is as follows：
Take 49.60g oil field stratum water, by 0.20g aliphatic alcohol polyethenoxy ether carboxylates and 0.20g azochlorosulfonate propyl lycines according to
In the secondary addition water, clear transparent solutions are evenly stirred until.
The oil displacement system for stirring is injected in ampoule bottle and is sealed, be put into high temperature ageing tank, be placed in 130 DEG C, constant temperature
Aging 7 days, stable state is reached to oil displacement system.After aging end, oil water interfacial tension, interface are determined under reservoir conditions
Power is 7.3 × 10-3mN/m。
Embodiment 3
For the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir, quality group turns into：Aliphatic alcohol polyethenoxy ether carboxylate
0.50%, azochlorosulfonate propyl lycine 0.50%, water 99.00%；Specifically each component quality is：
Aliphatic alcohol polyethenoxy ether carboxylate 0.25g；
Azochlorosulfonate propyl lycine 0.25g；
Water 49.50g.
Its preparation method is as follows：
Take 49.50g oil field stratum water, by 0.25g aliphatic alcohol polyethenoxy ether carboxylates and 0.25g azochlorosulfonate propyl lycines according to
In the secondary addition water, clear transparent solutions are evenly stirred until.
The oil displacement system for stirring is injected in ampoule bottle and is sealed, be put into high temperature ageing tank, be placed in 130 DEG C, constant temperature
Aging 7 days, stable state is reached to oil displacement system.After aging end, oil water interfacial tension, interface are determined under reservoir conditions
Power is 6.0 × 10-3mN/m。
Embodiment 4
For the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir, quality group turns into：Aliphatic alcohol polyethenoxy ether carboxylate
0.30%, azochlorosulfonate propyl lycine 0.30%, water 99.40%；Specifically each component quality is：
Aliphatic alcohol polyethenoxy ether carboxylate 0.30g；
Azochlorosulfonate propyl lycine 0.30g；
Water 99.40g.
Its preparation method is as follows：
Take 99.40g oil field stratum water, by 0.30g aliphatic alcohol polyethenoxy ether carboxylates and 0.30g azochlorosulfonate propyl lycines according to
In the secondary addition water, clear transparent solutions are evenly stirred until.
The oil displacement system for stirring is injected in ampoule bottle and is sealed, be put into high temperature ageing tank, be placed in 130 DEG C, constant temperature
It is aging, it is aging 7 days, 14 days, 21 days, 28 days, 35 days respectively.After aging end, oil-water interfaces are determined under the conditions of 130 DEG C respectively
Tension force, experimental result is as shown in Figure 1.As can be seen that oil displacement system good stability, reduces interfacial tension ability and does not receive high temperature substantially
The influence of high salt high rigidity condition.
Embodiment 5
For the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir, quality group turns into：Aliphatic alcohol polyethenoxy ether carboxylate
0.40%, azochlorosulfonate propyl lycine 0.40%, water 99.20%；Each component quality is：
Aliphatic alcohol polyethenoxy ether carboxylate 0.40g；
Azochlorosulfonate propyl lycine 0.40g；
Water 99.20g.
Its preparation method is as follows：
Take 99.20g oil field stratum water, by 0.40g aliphatic alcohol polyethenoxy ether carboxylates and 0.40g azochlorosulfonate propyl lycines according to
In the secondary addition water, clear transparent solutions are evenly stirred until.
The oil displacement system for stirring is injected in ampoule bottle and is sealed, be put into high temperature ageing tank, be placed in 130 DEG C, constant temperature
It is aging, it is aging 7 days, 14 days, 21 days, 28 days, 35 days respectively.After aging end, oil-water interfaces are determined under the conditions of 130 DEG C respectively
Tension force, experimental result is as shown in Figure 2.As can be seen that oil displacement system good stability, reduces interfacial tension ability and does not receive high temperature substantially
The influence of high salt high rigidity condition.
Embodiment 6
For the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir, quality group turns into：Aliphatic alcohol polyethenoxy ether carboxylate
0.50%, azochlorosulfonate propyl lycine 0.50%, water 99.00%；Each component quality is：
Aliphatic alcohol polyethenoxy ether carboxylate 0.50g；
Azochlorosulfonate propyl lycine 0.50g；
Water 99.00g.
Its preparation method is as follows：
Take 99.00g oil field stratum water, by 0.50g aliphatic alcohol polyethenoxy ether carboxylates and 0.50g azochlorosulfonate propyl lycines according to
In the secondary addition water, clear transparent solutions are evenly stirred until.
The oil displacement system for stirring is injected in ampoule bottle and is sealed, be put into high temperature ageing tank, be placed in 130 DEG C, constant temperature
It is aging, it is aging 7 days, 14 days, 21 days, 28 days, 35 days respectively.After aging end, oil-water interfaces are determined under the conditions of 130 DEG C respectively
Tension force, experimental result is as shown in Figure 3.As can be seen that oil displacement system good stability, reduces interfacial tension ability and does not receive high temperature substantially
The influence of high salt high rigidity condition.
Claims (6)
1. the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir is used for, it is characterised in that by mass percentage, including with the following group
Point：
The aliphatic alcohol polyethenoxy ether carboxylate of 0.30wt%~0.50wt%；
The azochlorosulfonate propyl lycine of 0.30wt%~0.50wt%；
Balance of water.
2. the oil displacement system for ultrahigh-temperature high salt high rigidity oil reservoir according to claim 1, it is characterised in that described
Aliphatic alcohol polyethenoxy ether carboxylate, with the structure shown in formula 1：
In formula, R1 is the alkyl of carbon number 12~14；N adds sum for ethoxy group；M is metal ion.
3. the oil displacement system for ultrahigh-temperature high salt high rigidity oil reservoir according to claim 2, it is characterised in that described
N is that 9, M is sodium ion.
4. the oil displacement system for ultrahigh-temperature high salt high rigidity oil reservoir according to claim 1, it is characterised in that described
Azochlorosulfonate propyl lycine, with the structure shown in formula 2：
In formula, R2It is the alkyl that carbon number is 12~18.
5. the oil displacement system for ultrahigh-temperature high salt high rigidity oil reservoir according to claim 4, it is characterised in that described
R2It is the alkyl that carbon number is 12.
6. the oil displacement system for ultrahigh-temperature high salt high rigidity oil reservoir according to claim 1, it is characterised in that the water
It is total salinity 25 × 104The stratum water of mg/L, calcium and magnesium bivalent metal ion concentration 10000mg/L.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108148566A (en) * | 2018-01-08 | 2018-06-12 | 中国石油化工股份有限公司 | A kind of ultralow interfacial tension heavy crude thinner and preparation method thereof |
| CN108285781A (en) * | 2018-03-19 | 2018-07-17 | 青岛大学 | A kind of high contents of calcium and magnesium oil reservoir complexed surfactant oil displacement system |
| CN111154473A (en) * | 2020-01-14 | 2020-05-15 | 北京勃兴石油科技有限公司 | Blockage removal oil displacement agent and preparation method and application thereof |
| CN113337265A (en) * | 2021-07-29 | 2021-09-03 | 山东德仕化工有限公司 | Low-tension viscosity-reducing oil displacement agent and preparation method and application thereof |
| CN114867709A (en) * | 2019-12-27 | 2022-08-05 | 花王化学品有限责任公司 | Ether carboxylic acid compositions |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775976A (en) * | 2012-08-02 | 2012-11-14 | 中国石油天然气股份有限公司 | Alkali-free composite flooding composition taking straight-chain fatty alcohol ether carboxyl betaine as main body |
| CN103113868A (en) * | 2013-02-06 | 2013-05-22 | 中国石油天然气股份有限公司 | Alkali-free chemical compound oil displacement composition and application thereof in tertiary oil recovery |
| CN103642481A (en) * | 2013-12-13 | 2014-03-19 | 长江大学 | Temperature-resistant and salt-resistant type low-interface tension foam oil-displacing agent and preparation method thereof |
| CN103773351A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Foam composition for gas displacement of high salinity oil reservoir, preparation method and application |
| CN103827253A (en) * | 2011-08-01 | 2014-05-28 | 罗地亚管理公司 | Use of environmentally friendly solvents to replace glycol-based solvents |
| CN103965851A (en) * | 2013-02-05 | 2014-08-06 | 中国石油化工股份有限公司 | Composite surfactant and preparation method thereof |
| CN103965853A (en) * | 2013-02-05 | 2014-08-06 | 中国石油化工股份有限公司 | Combined surfactant and its preparation method |
-
2017
- 2017-02-20 CN CN201710088994.0A patent/CN106883833B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103827253A (en) * | 2011-08-01 | 2014-05-28 | 罗地亚管理公司 | Use of environmentally friendly solvents to replace glycol-based solvents |
| CN102775976A (en) * | 2012-08-02 | 2012-11-14 | 中国石油天然气股份有限公司 | Alkali-free composite flooding composition taking straight-chain fatty alcohol ether carboxyl betaine as main body |
| CN103773351A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Foam composition for gas displacement of high salinity oil reservoir, preparation method and application |
| CN103965851A (en) * | 2013-02-05 | 2014-08-06 | 中国石油化工股份有限公司 | Composite surfactant and preparation method thereof |
| CN103965853A (en) * | 2013-02-05 | 2014-08-06 | 中国石油化工股份有限公司 | Combined surfactant and its preparation method |
| CN103113868A (en) * | 2013-02-06 | 2013-05-22 | 中国石油天然气股份有限公司 | Alkali-free chemical compound oil displacement composition and application thereof in tertiary oil recovery |
| CN103642481A (en) * | 2013-12-13 | 2014-03-19 | 长江大学 | Temperature-resistant and salt-resistant type low-interface tension foam oil-displacing agent and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108148566A (en) * | 2018-01-08 | 2018-06-12 | 中国石油化工股份有限公司 | A kind of ultralow interfacial tension heavy crude thinner and preparation method thereof |
| CN108285781A (en) * | 2018-03-19 | 2018-07-17 | 青岛大学 | A kind of high contents of calcium and magnesium oil reservoir complexed surfactant oil displacement system |
| CN108285781B (en) * | 2018-03-19 | 2021-09-24 | 青岛大学 | Composite surfactant oil displacement system for high-calcium-magnesium oil reservoir |
| CN114867709A (en) * | 2019-12-27 | 2022-08-05 | 花王化学品有限责任公司 | Ether carboxylic acid compositions |
| CN111154473A (en) * | 2020-01-14 | 2020-05-15 | 北京勃兴石油科技有限公司 | Blockage removal oil displacement agent and preparation method and application thereof |
| CN111154473B (en) * | 2020-01-14 | 2022-04-08 | 北京勃兴石油科技有限公司 | Blockage removal oil displacement agent and preparation method and application thereof |
| CN113337265A (en) * | 2021-07-29 | 2021-09-03 | 山东德仕化工有限公司 | Low-tension viscosity-reducing oil displacement agent and preparation method and application thereof |
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