CN109111908A - A kind of oil field increasing injection double type surfactant system and preparation method thereof - Google Patents
A kind of oil field increasing injection double type surfactant system and preparation method thereof Download PDFInfo
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- CN109111908A CN109111908A CN201810833387.7A CN201810833387A CN109111908A CN 109111908 A CN109111908 A CN 109111908A CN 201810833387 A CN201810833387 A CN 201810833387A CN 109111908 A CN109111908 A CN 109111908A
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- surfactant
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- increasing injection
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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Abstract
The present invention provides a kind of oil field increasing injection double type surfactant systems and preparation method thereof.The product is the mixed system that based on miscellaneous Shuangzi amphoteric surfactant, supplemented by nonionic Shuangzi amphoteric surfactant and anionic surfactant and water are constituted.Compared with prior art products, product of the present invention has broad spectrum activity, wide adaptation range；Wide using concentration range, under lower use concentration (0.1%), interfacial tension value still can reach 10‑3mN/m；Wetability is good, and permeability is high, and displacement efficiency is high；Salt-resistance is good, occurs in salt content 100000ppm (wherein calcium and magnesium ion content 5000ppm) aqueous solution without precipitating, turbid phenomenon；High temperature resistant and use temperature range is wide；System is neutrality, without organochlorine, alkali-free, is not injured to stratum；The agent can greatly reduce injection pressure, improve water-injection efficiency.
Description
Technical field
The present invention provides water injection well in a kind of petroleum industry increasing injection double type surfactant systems and its preparation side
Method.Specifically a kind of to have a broad spectrum activity, salt resistance, temperature resistance, without organochlorine, alkali-free do not injure stratum, are suitable for carbonic acid
All oil fields such as salt, sandstone, the increasing injection double type table including minor block oilfield, low permeability oil field, ultra-low penetration oil field are living
Agent system and preparation method thereof.
Background technique
The middle and later periods of oilfield exploitation, many wells are repeatedly acidified but measure effect is bad, and some acidified pressure breaks of well are applied
Work, the expansion of clay mineral caused by the residue and fracturing fluid of guanidine matrix liquid and particle migration can cause reservoir very big
Injury, cause water injection capacity to reduce, will appear in the injecting process water injection pressure is high, note not into infuse inadequate problem.To change
Becoming and shorts situation at present, renwing stratum production capacity improves well group water drive sweep area and swept volume, improve water swelling elastomer,
Therefore it proposes to inject increasing injection surfactant before and after acidification.Injection increasing injection surface-active agent method mainly solves residual
The big problem of the blocking and low osmoticing pore aquation membrane resistance that excess oil drips, mechanism are to pass through the boundary reduced between oil, water and rock
Face tension improves two phase fluid flow ability, improves well water injection capacity, while surfactant energy cleaning part is adhered to well bore wall
The greasy dirt in face and rock layer surface, to increase seepage channel.Realize the normal water filling of well.
Summary of the invention
The object of the present invention is to provide a kind of oil field increasing injection double type surfactant systems and preparation method thereof.
Technical scheme is as follows:
A kind of oil field increasing injection double type surfactant system, it be by following components according to weight percent prepare and
At:
The miscellaneous Shuangzi amphoteric surfactant is sulfonic acid type and the miscellaneous Shuangzi amphoteric surfactant of carboxylic acid type.
The nonionic Shuangzi amphoteric surfactant is carboxylate symmetric form amber acid diester Shuangzi surfactant, double seasons
One kind or its mixture arbitrarily matched in ammonium carboxymethyl sodium salt amphoteric gemini surfactant.
The anionic surfactant arrives octadecyl benzenesulfonic acid sodium, diisobutyl sodium naphthalene sulfonate, α-alkene for 12
One kind of hydrocarbon sulfonate sodium or its mixture arbitrarily matched.
A kind of oil field increasing injection double type surfactant system, the optimization weight percent of each component are as follows:
A kind of method of preparation oil field increasing injection double type surfactant system, comprising the following steps:
(1) it under normal temperature and pressure, adds water in reaction kettle, opens stirring, miscellaneous Shuangzi amophoteric surface active is then added
Agent is sufficiently stirred 15-25 minutes；
(2) after mixing evenly, nonionic Shuangzi amphoteric surfactant is added, continues stirring 15-25 minutes；
(3) anionic surfactant is added after being sufficiently stirred and continues stirring 25-35 minutes, both obtains the increasing injection Shuangzi
Type surfactant product.
The present invention be for current oil field reduce water injection pressure, improve water injection capacity, improve well group water drive sweep area and
Swept volume, a kind of gemini surfactant system increasing injection technology of renwing stratum production capacity, in the surface-active
Heterogemini surfactant is host agent in agent increasing injection technical system, and nonionic Gemini surface active agent and anionic surface are living
Property agent be adjuvant.
Compared with the prior art, the present invention has a characteristic that
1. the product has broad spectrum activity, wide adaptation range --- it is suitable for all oil fields such as carbonate, sandstone, including small disconnected
Block oil field, low permeability oil field, ultra-low penetration oil field；
2. wide using concentration range, under lower use concentration (0.1%), interfacial tension value still can reach 10-3mN/m；
Wetability is good, and permeability is high, and displacement efficiency is high；
3. salt-resistance is good, without heavy in salt content 100000ppm (wherein calcium and magnesium ion content 5000ppm) aqueous solution
It forms sediment, turbid phenomenon occurs；
4. resistant to high temperatures, use temperature range is wide --- it can be used within the scope of 0 DEG C~150 DEG C；
5. product is neutrality, alkali-free, without organochlorine, to stratum fanout free region.
Detailed description of the invention
Fig. 1 is increasing injection surfactant of the present invention scene using effect schematic diagram.
Specific embodiment
Embodiment 1:
(1) under normal temperature and pressure, 35kg water is added in reaction kettle, stirring is opened, miscellaneous Shuangzi amphoteric surface is then added
Activating agent (Xi'an Ding Bowei Environmental Protection Technology Co., Ltd permeates king) 40kg, is sufficiently stirred 20 minutes；
(2) after mixing evenly, (carboxylate symmetric form amber acid diester Shuangzi table is living for addition nonionic amphoteric surfactant
Agent) 20kg, continues stirring 20 minutes；
(3) anionic surfactant sodium dodecylbenzene sulfonate 5kg is added after being sufficiently stirred, continues stirring 30 minutes,
Both the increasing injection surfactant product is obtained.
Embodiment 2:
(1) under normal temperature and pressure, 40kg water is added in reaction kettle, stirring is opened, miscellaneous Shuangzi amphoteric surface is then added
Activating agent (Xi'an Ding Bowei Environmental Protection Technology Co., Ltd permeates king) 30kg, is sufficiently stirred 15 minutes；
(2) after mixing evenly, (double quaternary ammonium carboxymethyl sodium salt amphoteric gemini tables are living for addition nonionic amphoteric surfactant
Agent) 25kg, continues stirring 25 minutes；
(3) anionic surfactant diisobutyl sodium naphthalene sulfonate 5kg is added after being sufficiently stirred, continues stirring 35 minutes,
Both the increasing injection surfactant product is obtained.
Embodiment 3:
(1) under normal temperature and pressure, 39kg water is added in reaction kettle, stirring is opened, miscellaneous Shuangzi amphoteric surface is then added
Activating agent (Xi'an Ding Bowei Environmental Protection Technology Co., Ltd permeates king) 45kg, is sufficiently stirred 25 minutes；
(2) after mixing evenly, (double quaternary ammonium carboxymethyl sodium salt amphoteric gemini tables are living for addition nonionic amphoteric surfactant
Agent) 15kg, continues stirring 15 minutes；
(3) anionic surfactant alpha-olefin sodium sulfonate 1kg is added after being sufficiently stirred, continues stirring 25 minutes, both
The increasing injection surfactant product.
Embodiment 4:
(1) under normal temperature and pressure, 38kg water is added in reaction kettle, stirring is opened, miscellaneous Shuangzi amphoteric surface is then added
Activating agent (Xi'an Ding Bowei Environmental Protection Technology Co., Ltd permeates king) 40kg, is sufficiently stirred 25 minutes；
(2) after mixing evenly, (carboxylate symmetric form amber acid diester Shuangzi table is living for addition nonionic amphoteric surfactant
Agent 10kg and double quaternary ammonium carboxymethyl sodium salt amphoteric gemini surfactant 10kg) 20kg, continues stirring 25 minutes；
(3) anionic surfactant alpha-olefin sodium sulfonate 2kg is added after being sufficiently stirred and continues stirring 25 minutes, must both be somebody's turn to do
Increasing injection surfactant product.
Embodiment 5:
(1) under normal temperature and pressure, 35kg water is added in reaction kettle, stirring is opened, miscellaneous Shuangzi amphoteric surface is then added
Activating agent (Xi'an Ding Bowei Environmental Protection Technology Co., Ltd permeates king) 40kg, is sufficiently stirred 20 minutes；
(2) after mixing evenly, (double quaternary ammonium carboxymethyl sodium salt amphoteric gemini tables are living for addition nonionic amphoteric surfactant
Agent) 20kg, continues stirring 15 minutes；
(3) anionic surfactant alpha-olefin sodium sulfonate 2kg and diisobutyl sodium naphthalene sulfonate are added after being sufficiently stirred
3kg, continue stirring 25 minutes, both obtain the increasing injection surfactant product.
Increasing injection surfactant effect assessment of the present invention:
Increasing injection surfactant room effect evaluation of the present invention:
Referring to following table, will research area's rock core is whole cuts, dry, measure permeability, evacuate saturation water flooding, artificial irreducible water,
Aging carries out rock core flowing experiment.Successively carry out injection water drive oil test, increasing injection surfactant oil displacement test, subsequent waterflooding
Test.The pressure drop rate of three blocks of rock cores is respectively 33.23%, 34.92%, 37.36%.
Statistics indicate that increasing injection surfactant of the present invention has very strong increasing injection ability, decompression rate average out to
35% or more, injection rate is up to 40% or more.
Increasing injection surfactant of the present invention scene using effect:
Referring to attached drawing.From the area, pressure change histogram can be seen that area's steady production well and inject from January, 2015
Increasing injection surfactant of the present invention, injection pressure is begun to decline within 2 months 2015, in by the end of August, 2016 by the end of, injection pressure
6.9MPa has dropped 2.5MPa compared with the 9.4Mpa before injecting, and pressure drop rate reaches 26.6%, and effect is obvious.
Claims (6)
1. a kind of oil field increasing injection double type surfactant system, it is characterised in that: it is by following components according to weight hundred
Ratio is divided to be formulated:
2. a kind of oil field according to claim 1 increasing injection double type surfactant system, it is characterised in that: described
Miscellaneous Shuangzi amphoteric surfactant is sulfonic acid type and the miscellaneous Shuangzi amphoteric surfactant of carboxylic acid type.
3. a kind of oil field according to claim 1 increasing injection double type surfactant system, it is characterised in that: described
Nonionic Shuangzi amphoteric surfactant is carboxylate symmetric form amber acid diester Shuangzi surfactant, double quaternary ammonium carboxymethyl sodium salts two
Property Shuangzi surfactant in a kind of or its mixture for arbitrarily matching.
4. a kind of oil field according to claim 1 increasing injection double type surfactant system, it is characterised in that: described
Anionic surfactant arrives octadecyl benzenesulfonic acid sodium, diisobutyl sodium naphthalene sulfonate, one kind of alpha-olefin sodium sulfonate for 12
Or its mixture for arbitrarily matching.
5. a kind of oil field according to claim 1 increasing injection double type surfactant system, it is characterised in that: it be by
Following components is formulated according to weight percent:
6. the method for preparing a kind of oil field increasing injection double type surfactant system described in claim 1, it is characterised in that:
The following steps are included:
(1) it under normal temperature and pressure, adds water in reaction kettle, opens stirring, miscellaneous Shuangzi amphoteric surfactant is then added, fills
Divide stirring 15-25 minutes；
(2) after mixing evenly, nonionic Shuangzi amphoteric surfactant is added, continues stirring 15-25 minutes；
(3) anionic surfactant is added after being sufficiently stirred and continues stirring 25-35 minutes, both obtains the increasing injection double type table
Agent product living.
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Cited By (5)
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| CN109762548A (en) * | 2019-03-05 | 2019-05-17 | 西安市轻工业研究所 | A kind of increasing injection oil displacement agent of the low permeability oil field containing Gemini surface active agent |
| CN110700804A (en) * | 2019-10-09 | 2020-01-17 | 中国石油天然气股份有限公司 | Method for adding antihypertensive and augmented injection medicament |
| CN111548781A (en) * | 2020-06-05 | 2020-08-18 | 赛科思能源技术(重庆)有限责任公司 | Hypotonic oil field water injection pressure-reducing injection-increasing agent |
| US11236264B2 (en) | 2020-06-08 | 2022-02-01 | Saudi Arabian Oil Company | Methods and compositions using a combination of zwitterionic surfactants and gemini surfactants as diversion agents |
| US11959017B1 (en) | 2022-10-07 | 2024-04-16 | Saudi Arabian Oil Company | Methods and materials for wellbore fluid diversion using visco-elastic surfactants |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110700804A (en) * | 2019-10-09 | 2020-01-17 | 中国石油天然气股份有限公司 | Method for adding antihypertensive and augmented injection medicament |
| CN110700804B (en) * | 2019-10-09 | 2022-01-04 | 中国石油天然气股份有限公司 | Method for adding antihypertensive and augmented injection medicament |
| CN111548781A (en) * | 2020-06-05 | 2020-08-18 | 赛科思能源技术(重庆)有限责任公司 | Hypotonic oil field water injection pressure-reducing injection-increasing agent |
| CN111548781B (en) * | 2020-06-05 | 2023-03-24 | 赛科思能源技术(重庆)有限责任公司 | Hypotonic oil field water injection pressure-reducing injection-increasing agent |
| US11236264B2 (en) | 2020-06-08 | 2022-02-01 | Saudi Arabian Oil Company | Methods and compositions using a combination of zwitterionic surfactants and gemini surfactants as diversion agents |
| US11959017B1 (en) | 2022-10-07 | 2024-04-16 | Saudi Arabian Oil Company | Methods and materials for wellbore fluid diversion using visco-elastic surfactants |
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