CN107779186A - Trench oil emulsion transfer drive - Google Patents
Trench oil emulsion transfer drive Download PDFInfo
- Publication number
- CN107779186A CN107779186A CN201710557054.1A CN201710557054A CN107779186A CN 107779186 A CN107779186 A CN 107779186A CN 201710557054 A CN201710557054 A CN 201710557054A CN 107779186 A CN107779186 A CN 107779186A
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- oil
- transfer drive
- emulsion
- swill
- water
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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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- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/502—Oil-based compositions
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
Abstract
The invention discloses a kind of microemulsion transfer drive system prepared using swill oil as raw material, the raw material of the transfer drive system includes swill oil pretreatment fluid, and HLB value is less than 6 anionic, nonionic or compound surfactant.Have the beneficial effect that：The raw material of the present invention forms WO emulsion through Over emulsfication, and its drop size can be designed according to the pore-size of injection oil reservoir.The emulsion droplet size being typically designed out is more than pore throat size, and such emulsion can effectively block venturi, produce Jamin effect, makes subsequent fluid that fluid diversion occur, and then expand swept volume.Simultaneously because it is Water-In-Oil class emulsion, meet water and produce larger flow resistance, meeting oil, then flow resistance changes the selective water plugging profile control effect for less, serving water blockoff without blocking up oil, therefore the present invention is the transfer drive system for the secondary use that profile control and water plugging and can that can be selective realizes swill oil.
Description
Technical field
The present invention relates to oil-gas mining field, specifically trench oil emulsion transfer drive.
Background technology
Swill oil is commonly called as gutter oil, is caused all kinds of poor oils in human lives, by high-temperature cooking, forms a variety of
Carcinogen, it can not eat again.But because it can neither eat, hesitate to discard.If it is converted into the available material of industry, no
It can only turn waste into wealth, be also prevented from it and flow back to catering trade again.
Waterflooding oil field simultaneously, well water is a common problem, and injection fluid communication is that a needs solve
Problem.Water yield formation and production water direction are timely and accurately verified, takes profile control, water blockoff measure to be very important.Oil field is normal at present
Transfer drive system mainly has polymerization species, microballoon class, emulsion class, and various systems have the advantage of oneself, also have accordingly not
Foot, further, since the limitation of economic benefit, it is desirable to which the control of transfer drive system dosage causes transfer drive radius and effectively in certain limit
Phase is limited.Had no in currently available technology about utilizing swill oil to prepare the related report that emulsion is used for the profile control agent of oil field production
Road.
Prior art such as Authorization Notice No. is the B of CN 104277175 Chinese invention patent, discloses a kind of polyacrylamide
Amine reverse micro emulsion transfer drive system, it is under the effect of redox composite initiator, is made by the aggregated reaction of reverse micro emulsion
's；Described reverse micro emulsion, with parts by weight, include following component：1）10 ~ 70 parts of oil-based solvent；2）1 ~ 25 part
Emulsifying agent；3）0.01 ~ 15 part of hydrophobic monomer；4）5 ~ 60 parts of acrylamides；5）1 ~ 40 part of water-soluble temperature-resistant anti-salt list
Body；6）0.001 ~ 5 part of crosslinking agent；7）10 ~ 60 parts of water.Above-mentioned transfer drive system may expand in high temperature and high salinity salt solution,
Stability is preferable, but the preparation cost of the adjustment and control system is higher, and water blockoff, deep profile controlling and Flooding Efficiency are undesirable, to crude oil
Recovery ratio has much room for improvement.
The content of the invention
It is an object of the invention to provide a kind of selective shut-off for not blocking up oil with water blockoff, water plugging effect is good, can drop
Low oil water interfacial tension, the trench oil emulsion transfer drive of the high advantage of oil displacement efficiency.
The present invention is directed to the problem of being mentioned in background technology, and the technical scheme taken is：Trench oil emulsion transfer drive is HLB
The WO emulsion that surfactant of the value less than 6 is mixed to form with swill oil.The WO emulsion being prepared
The selective shut-off of oil is not blocked up with water blockoff, and water plugging property is excellent, can be deep into oil-containing low infiltration layer, can also reduce profit
Interfacial tension, make oil droplet more yielding, free remaining oil can be restarted, the crude oil and free crude oil to well deep part
Acquisition rate is high.
Preferably, the preparation method of trench oil emulsion transfer drive comprises the following steps：By pretreated swill oil or
The swill oil sold on the market is added in emulsifier solution, and WO emulsion is prepared into ultrasonic homogenizer after mixing.
The Size Distribution, stability and interfacial tension of emulsion are measured, it is desirable to which emulsion average grain diameter is more than target reservoir hole
Larynx mean radius, and emulsion can keep syneresis rate in 15 days to be less than 20% at a temperature of target reservoir, and interfacial tension is less than 10- 3mN/m。
Preferably, emulsifier solution is anionic, nonionic or the compound surfactant that HLB value is less than 6.
Emulsifier solution forms Water-In-Oil structure with swill oil, has the selective shut-off that water blockoff does not block up oil.
Preferably, emulsifier solution is 6 with swill oil volume ratio:3~6:1.The content of emulsifying agent is in emulsifier solution
0.3%-0.7%.Under mentioned emulsifier solution concentration, the Stability Analysis of Structures of the WO emulsion of formation, good fluidity.
Preferably, the working frequency of ultrasonic homogenizer is 2.5 ~ 4kHZ, the working time is 20 ~ 40min.Above-mentioned condition
Under, swill oil fully contacts with emulsifier solution, forms stable Water-In-Oil structure.
Preferably, the pretreatment operation of swill oil is：Caused swill oil in life is collected, sedimentation filtration, is obtained sweet
Oily three fat contents are higher than 80% oil product.WO emulsion is prepared as raw material using discarded swill oil, entered using emulsion
Row transfer drive, it can both reduce and increase oily cost, the secondary use of swill oil can be realized again.
Compared with prior art, the advantage of the invention is that：1）Using swill oil as raw material, can both reduce original collection into
This, can realize the secondary use of swill oil again；2）The WO emulsion that swill oil is formed, can in the earth formation in migration process
To reduce adhesion work of the crude oil in rock wall, remaining oil is peeled off, and after running into residual oil oil droplet, profit circle can be reduced
Face tension force, make oil droplet more yielding, free remaining oil can be restarted, so as to increase oil displacement efficiency；The breast of greater particle size
When shape liquid drop runs into less throat radius, due to Jamin effect, producing larger resistance makes subsequent fluid that liquid stream turn occur
To, expand swept volume, and due to being oil phase for WO emulsion, foreign minister, flow resistance change is smaller after meeting oil, but
Flow resistance becomes big after meeting water, and the selective shut-off that water blockoff does not block up oil can be achieved.
Specific embodiment
The present invention program is described further below by embodiment：
Embodiment 1：
Trench oil emulsion transfer drive is the WO emulsion that surfactant of the HLB value less than 6 is mixed to form with swill oil.
The preparation method of trench oil emulsion transfer drive comprises the following steps：Sell pretreated swill oil or on the market
Swill oil be added in emulsifier solution, add active peptides, the amino acid sequence of active peptides is
HSHACTKCSYYCAKFCGTAKCTHYLCRVLHPGKLCVCVNCSK.After mixing water-in-oil type is prepared into ultrasonic homogenizer
Emulsion.Above-mentioned active peptides and swill oil and emulsifying agent are respectively provided with good compatibility, active peptides be attached to swill oil and
The water-in-oil emulsion molecular surface that emulsifying agent is formed, the hydrophobicity of WO emulsion can be remarkably reinforced, improve Water-In-Oil
The water plugging property of type emulsion.The Size Distribution, stability and interfacial tension of emulsion are measured, it is desirable to which emulsion is average
Particle diameter is more than target reservoir pore throat mean radius, and emulsion can keep syneresis rate in 15 days to be less than at a temperature of target reservoir
20%, interfacial tension is less than 10-3mN/m.Mentioned emulsifier solution is anionic of the HLB value less than 6, nonionic or compound
Surfactant.Emulsifier solution is 6 with swill oil volume ratio:3~6:1.The content of emulsifying agent is 0.3%- in emulsifier solution
0.7%.The working frequency of ultrasonic homogenizer is 2.5 ~ 4kHZ, and the working time is 20 ~ 40min.The pretreatment operation of swill oil
For：Caused swill oil in life is collected, sedimentation filtration, obtains the oil product that triglyceride content is higher than 80%.
The WO emulsion that swill oil is formed in migration process, can reduce crude oil in rock wall in the earth formation
Adhesion work, remaining oil is peeled off, and after running into residual oil oil droplet, oil water interfacial tension can be reduced, make oil droplet more yielding,
Free remaining oil can be restarted, so as to increase oil displacement efficiency；The emulsion droplet of greater particle size runs into less venturi
During radius, due to Jamin effect, producing larger resistance makes subsequent fluid that fluid diversion occur, and expands swept volume, and by
In being oil phase for WO emulsion, foreign minister, flow resistance change is smaller after meeting oil, but flow resistance becomes big after chance water, because
This can realize that water blockoff does not block up the selective shut-off of oil.
Embodiment 2：
Configuration quality fraction is 0.5% fatty acid sorbitan solution, by it by volume 7 with the swill oil sold on the market:3
Mixing, adds active peptides, the amino acid sequence of active peptides is
HSHACTKCSYYCAKFCGTAKCTHYLCRVLHPGKLCVCVNCSK.After mixing water-in-oil type is prepared into ultrasonic homogenizer
Emulsion.Above-mentioned active peptides and swill oil and emulsifying agent are respectively provided with good compatibility, active peptides be attached to swill oil and
The water-in-oil emulsion molecular surface that emulsifying agent is formed, the hydrophobicity of WO emulsion can be remarkably reinforced, improve Water-In-Oil
The water plugging property of type emulsion.The Size Distribution, stability and interfacial tension of emulsion are measured, it is desirable to which emulsion is average
Particle diameter is more than target reservoir pore throat mean radius, and emulsion can keep syneresis rate in 15 days to be less than at a temperature of target reservoir
20%, interfacial tension is less than 10-3mN/m.The working frequency of ultrasonic homogenizer is 3kHZ, working time 26min.Above-mentioned swill
The WO emulsion that oil is formed in migration process, can reduce adhesion work of the crude oil in rock wall in the earth formation, will be surplus
Excess oil is peeled off, and after running into residual oil oil droplet, can be reduced oil water interfacial tension, be made oil droplet more yielding, free residue
Oil can be restarted, so as to increase oil displacement efficiency；When the emulsion droplet of greater particle size runs into less throat radius, due to
Jamin effect, producing larger resistance makes subsequent fluid that fluid diversion occur, and expands swept volume, and due to for water-in-oil type
Emulsion, foreign minister are oil phase, and flow resistance change is smaller after meeting oil, but flow resistance becomes big after chance water, therefore can realize water blockoff
The selective shut-off of oil is not blocked up.
Embodiment 3：
Configuration quality fraction is that 0.5% HLB value is less than 6 polyglycereol stearic acid ester solution, by itself and pretreated swill oil
By volume 7:3 mixing, add active peptides, the amino acid sequence of active peptides is
HSHACTKCSYYCAKFCGTAKCTHYLCRVLHPGKLCVCVNCSK.After mixing water-in-oil type is prepared into ultrasonic homogenizer
Emulsion.Above-mentioned active peptides and swill oil and emulsifying agent are respectively provided with good compatibility, active peptides be attached to swill oil and
The water-in-oil emulsion molecular surface that emulsifying agent is formed, the hydrophobicity of WO emulsion can be remarkably reinforced, improve Water-In-Oil
The water plugging property of type emulsion.The Size Distribution, stability and interfacial tension of emulsion are measured, it is desirable to which emulsion is average
Particle diameter is more than target reservoir pore throat mean radius, and emulsion can keep syneresis rate in 15 days to be less than at a temperature of target reservoir
20%, interfacial tension is less than 10-3mN/m.The working frequency of ultrasonic homogenizer is 3kHZ, working time 26min.Above-mentioned swill
The WO emulsion that oil is formed in migration process, can reduce adhesion work of the crude oil in rock wall in the earth formation, will be surplus
Excess oil is peeled off, and after running into residual oil oil droplet, can be reduced oil water interfacial tension, be made oil droplet more yielding, free residue
Oil can be restarted, so as to increase oil displacement efficiency；When the emulsion droplet of greater particle size runs into less throat radius, due to
Jamin effect, producing larger resistance makes subsequent fluid that fluid diversion occur, and expands swept volume, and due to for water-in-oil type
Emulsion, foreign minister are oil phase, and flow resistance change is smaller after meeting oil, but flow resistance becomes big after chance water, therefore can realize water blockoff
The selective shut-off of oil is not blocked up.The pretreatment operation of swill oil is：Caused swill oil in life is collected, sedimentation filtration, is obtained
It is higher than 80% oil product to triglyceride content.
Routine operation in the operating procedure of the present invention is well known to those skilled in the art, herein without repeating.
Technical scheme is described in detail embodiment described above, it should be understood that it is described above only
For the specific embodiment of the present invention, it is not intended to limit the invention, all any modifications made in the spirit of the present invention,
Supplement or similar fashion replacement etc., should be included in the scope of the protection.
SEQUENCE LISTING
<110>Zhejiang Ocean university
<120>Trench oil emulsion transfer drive
<130> 1
<160> 1
<170> PatentIn version 3.5
<210> 1
<211> 42
<212> PRT
<213>It is artificial synthesized
<400> 1
His Ser His Ala Cys Thr Lys Cys Ser Tyr Tyr Cys Ala Lys Phe Cys
1 5 10 15
Gly Thr Ala Lys Cys Thr His Tyr Leu Cys Arg Val Leu His Pro Gly
20 25 30
Lys Leu Cys Val Cys Val Asn Cys Ser Lys
35 40
Claims (7)
1. trench oil emulsion transfer drive, it is characterised in that：Described transfer drive is the surfactant and swill oil that HLB value is less than 6
The WO emulsion being mixed to form.
2. trench oil emulsion transfer drive according to claim 1, it is characterised in that：The preparation method of the transfer drive include with
Lower step：Pretreated swill oil or the swill oil sold on the market are added in emulsifier solution, ultrasonic wave is used after mixing
Homogenizer is prepared into emulsion transfer drive.
3. the preparation method of trench oil emulsion transfer drive according to claim 2, it is characterised in that：Described emulsifying agent is molten
Liquid is the anionic or nonionic or compound surfactant that HLB value is less than 6.
4. the preparation method of trench oil emulsion transfer drive according to claim 2, it is characterised in that：Described emulsifying agent is molten
Liquid is 6 with swill oil volume ratio:3~6:1.
5. the preparation method of trench oil emulsion transfer drive according to claim 2, it is characterised in that：Described emulsifying agent is molten
The content of emulsifying agent is 0.3%-0.7 wt % in liquid.
6. the preparation method of trench oil emulsion transfer drive according to claim 2, it is characterised in that：Described ultrasonic wave is equal
The working frequency for changing device is 2.5 ~ 4kHZ, and the working time is 20 ~ 40min.
7. the preparation method of trench oil emulsion transfer drive according to claim 2, it is characterised in that：Described swill oil
Pretreatment operation is：Caused swill oil in life is collected, sedimentation filtration, obtains the oil product that triglyceride content is higher than 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557054.1A CN107779186A (en) | 2017-07-10 | 2017-07-10 | Trench oil emulsion transfer drive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557054.1A CN107779186A (en) | 2017-07-10 | 2017-07-10 | Trench oil emulsion transfer drive |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762543A (en) * | 2019-02-20 | 2019-05-17 | 中国石油大学(华东) | A kind of heat-resistant salt-resistant is from Tackified emulsion work-in-progress control diversion agent and preparation method thereof |
| CN112521927A (en) * | 2020-12-15 | 2021-03-19 | 陕西科技大学 | Preparation method and application of oil film volume expanding agent |
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| CN103881676A (en) * | 2014-03-13 | 2014-06-25 | 中国石油大学(北京) | Oil-external emulsion oil displacement agent and preparation method and application thereof |
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| CN105385428A (en) * | 2015-07-03 | 2016-03-09 | 中国石油大学(华东) | Emulsion-type self-adaptive plugging agent suitable for high salinity stratum and preparation method thereof |
| CN106754539A (en) * | 2017-01-04 | 2017-05-31 | 中国科学院沈阳应用生态研究所 | One plant of anaerobism produces bacillus subtilis and its application of lipopeptide surfactant |
| CN107227148A (en) * | 2017-06-08 | 2017-10-03 | 浙江海洋大学 | A kind of micro emulsion transfer drive system prepared by raw material of swill oil |
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2017
- 2017-07-10 CN CN201710557054.1A patent/CN107779186A/en active Pending
Patent Citations (7)
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| CN101191140A (en) * | 2006-11-23 | 2008-06-04 | 西安华宇投资有限公司 | Biological polypeptide blocking remover and preparation method thereof |
| CN103331127A (en) * | 2013-07-09 | 2013-10-02 | 中国科学院过程工程研究所 | Biosurfactant and preparation method thereof |
| CN104419395A (en) * | 2013-08-20 | 2015-03-18 | 中国石油化工股份有限公司 | Temperature-resistant salt-tolerance nano emulsion used in tertiary oil recovery and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762543A (en) * | 2019-02-20 | 2019-05-17 | 中国石油大学(华东) | A kind of heat-resistant salt-resistant is from Tackified emulsion work-in-progress control diversion agent and preparation method thereof |
| CN112521927A (en) * | 2020-12-15 | 2021-03-19 | 陕西科技大学 | Preparation method and application of oil film volume expanding agent |
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Application publication date: 20180309 |