CN109973064A - A kind of oil exploitation method - Google Patents
A kind of oil exploitation method Download PDFInfo
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- CN109973064A CN109973064A CN201910231696.1A CN201910231696A CN109973064A CN 109973064 A CN109973064 A CN 109973064A CN 201910231696 A CN201910231696 A CN 201910231696A CN 109973064 A CN109973064 A CN 109973064A
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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
- C09K8/588—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 polymers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Abstract
The invention discloses a kind of oil exploitation methods, belong to technical field of petroleum extraction.The oil exploitation method is the following steps are included: S1: preparation nonylphenol polyoxyethylene ether polymer；S2: triblock polyether copolymer is prepared；S3: preparation polyoxyethylene groups ester copolymer；S4: recover the oil: water and nonylphenol polyoxyethylene ether polymer are 100: 0.8-1.5 to be uniformly mixed and be configured to oil reservoir and squeeze into liquid, then oil reservoir is squeezed into liquid and squeezes into oil reservoir by weight, and build the pressure 24-48h；Then using pumping unit or screw pump lifting equipment lifting extraction well liquid, polyoxyethylene groups ester copolymer and triblock polyether copolymer is added in the annular space between oil well oil conduit and casing, while lifting extraction well liquid；The weight ratio of the nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and triblock polyether copolymer is (4.2-6.4): (3.5-4.6): (3.5-5.8).The present invention improves the dehydration rate of oil exploitation Crude Oil Produced Liquid by the reinforcement system constituted using nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and triblock polyether copolymer.
Description
Technical field
The invention belongs to technical field of petroleum extraction, and in particular to a kind of method of oil exploitation.
Background technique
In recent years, economic development is maked rapid progress, to meet the needs of to petroleum, when oil field mostly enters tertiary oil recovery
Phase, chemical displacement of reservoir oil technology are most widely used technologies during tertiary oil recovery.Since chemical displacement of reservoir oil technology can significantly improve
The recovery ratio of crude oil, makes oil field have more potentiality to be exploited, and application prospect is very wide.Therefore, the main target studied from now on is
Chemical flooding level and efficient process chemistry flooding produced liquid is continuously improved.
Chemical flooding can significantly improve sweep efficiency, improve oil and water mobility ratio, increase oil recovery factor, but surface-active
The injection of agent also brings difficulty to the processing of Produced Liquid and the re-injection of recovered water.The oil recovery auxiliary agent of addition can make the oil of system
Water interfacial tension is greatly lowered, and system is in thermodynamic stability；Meanwhile being adsorbed on agent molecule on oil-water interfaces
Hydrophobic chain is wrapped in droplet surface and forms protective layer, had both increased the difficulty of the crude oil emulsion water-oil separating of extraction, and had also caused
Oil content is high in sewage after separation, increases the burden of sewage treatment.
It is practiced by years of researches and oil field, chemical flooding technology is used by each elephant and achieves very high economic effect
Beneficial chemical flooding technology is enjoyed great prestige in the world as the dominant technology of the multiple oil field continuously steady productions in China.But chemical flooding technology is improving
Processing while recovery ratio also to later period Produced Liquid brings many problems, such as enhances emulsion stability, grease and is difficult to point
Increased from, produced water treatment and re-injection difficulty etc., these problems can cause the raising of thickened oil recovery cost again.
Chinese patent literature " a kind of method of thickened oil recovery (patent No. ZL 200810117487.6) " discloses a kind of thick
The method of oil exploitation, mainly provides a serial thinner, includes that oil reservoir and well wellbore make reducing thick oil viscosity in oil well, improves
The mobility of viscous crude.It include: a. to prepare water-soluble thinner I；B. thinner II is prepared；C. thinner III is prepared；It d. will be water-soluble
Property thinner I squeezes into oil reservoir；E. using pumping unit or screw pump lifting equipment lifting extraction well liquid；Not according to Produced Liquid crude oil
Same viscosity, viscosity reducing agent II or viscosity reducing agent III is added in the annular space between oil well oil conduit and casing respectively.The invention is adopted
Chemically make reducing thick oil viscosity in oil reservoir and reduce the viscosity of well liquid in pit shaft, improves thickened oil recovery effect, oil well is continuously given birth to
The production time is far longer than the recovery method of the prior art, and production run cost is greatly lowered, hence it is evident that is better than existing thickened oil recovery
Technology.But still have the problem not so good to petroleum dehydrating effect.
Summary of the invention
The object of the present invention is to provide a kind of oil exploitation methods, to solve in a kind of Chinese patent literature " thickened oil recovery
Method (patent No. ZL 200810117487.6) " it is disclosed on the basis of how to optimize chemical assistant component, formula, user
Method etc. improves the problem of chemical assistant is to the dehydrating effect of thickened oil recovery.
In order to solve the above technical problems, the present invention uses following technical scheme
A kind of oil exploitation method, comprising the following steps:
S1: preparation nonylphenol polyoxyethylene ether polymer, the nonylphenol polyoxyethylene ether polymer includes following component:
Sodium hydroxide, polyethylene polyamine, sodium carbonate, nonylphenol polyoxyethylene ether sodium sulfonate, sodium bicarbonate, surplus are water；
The method for preparing nonylphenol polyoxyethylene ether polymer: by three kinds of sodium hydroxide, sodium carbonate and sodium bicarbonate components
It is proportionally added into reaction kettle, 20% water is added after being slowly warming up to 50-60 DEG C, stirs 30-40min, is then being stirred continuously
In the case where sequentially add polyethylene polyamine, nonylphenol polyoxyethylene ether sodium sulfonate, be eventually adding water, it is stirring while adding, stirring
20-25min stops heating, is cooled to room temperature discharging, obtains nonylphenol polyoxyethylene ether polymer；
S2: preparing triblock polyether copolymer, and the triblock polyether copolymer includes following component: potassium hydroxide, ring
Ethylene Oxide, ethylene oxide, polyethylene polyamine；
The method for preparing triblock polyether copolymer: catalyst potassium hydroxide being added in a high pressure reaction kettle, is filled with nitrogen,
It vacuumizes, is warming up to 125-135 DEG C, then 60% propylene oxide is added dropwise into reaction kettle, control the pressure of reaction kettle in 0.5MPa
Hereinafter, polyethylene polyamine reaction 1-2h is added, the oleophylic head of polypropylene oxide is obtained；Adjust temperature to 115-125 DEG C, again to
Be added dropwise ethylene oxide in reaction kettle, control reactor pressure in 0.5MPa hereinafter, to material reaction pressure completely and in reaction kettle
After being reduced to initial value, polyethylene polyamine is added, the reaction was continued at such a temperature 1-2h obtains polyethylene oxide hydrophilic head, then
It is warming up to 125-135 DEG C, then 40% propylene oxide is added dropwise into reaction kettle, controls the pressure of reaction kettle in 0.5MPa hereinafter, anti-
1-2h is answered, is cooled down after the reaction was completed, white solid three block type polyethers triblock polyether copolymer is obtained；
S3: preparation polyoxyethylene groups ester copolymer, the polyoxyethylene groups ester copolymer includes following component: polyethylene pyrrole
Pyrrolidone, polyoxyethylene stearic acid ester, α-sodium olefin sulfonate, ethoxylated alkyl sodium sulfonate, emulsifier, stabilizer, ABS surface
Activating agent, xanthan gum；
The method for preparing polyoxyethylene groups ester copolymer: polyvinylpyrrolidone, α-olefin sulfonic acid are added in a kettle
Sodium and 30% water, stirring and dissolving, constant temperature 10min, sequentially adds stearic acid polyoxyethylene after reaction kettle is warming up to 40-45 DEG C
Ester, ethoxylated alkyl sodium sulfonate, emulsifier, stabilizer, ABS surface activating agent, xanthan gum stirring and dissolving and remaining water, heating
Constant temperature 10min is after to 60-65 DEG C to get polyoxyethylene groups ester copolymer；
S4: recover the oil: water and nonylphenol polyoxyethylene ether polymer are 100: 0.8-1.5 to be uniformly mixed and be configured to by weight
Oil reservoir squeezes into liquid, then oil reservoir is squeezed into liquid and squeezes into oil reservoir, and build the pressure 24-48h；Then it is lifted using pumping unit or screw pump lifting equipment
Extraction well liquid is risen, polyoxyethylene groups ester copolymer and triblock polyether copolymerization is added in the annular space between oil well oil conduit and casing
Object, while lifting extraction well liquid；Nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and the three block is poly-
The weight ratio of ether copolymer is (4.2-6.4): (3.5-4.6): (3.5-5.8).
Preferably, the nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and triblock polyether are total
Polymers and oil well liquid-producing volume ratio are 5.3:4.2:4.6.
Preferably, the nonylphenol polyoxyethylene ether polymer is as unit of parts by weight, including following component: sodium hydroxide
2-6 parts, 3-7 parts of polyethylene polyamine, 7-12 parts of sodium carbonate, 3-6 parts of nonylphenol polyoxyethylene ether sodium sulfonate, 4-8 parts of sodium bicarbonate,
60-80 parts of water.
Preferably, the triblock polyether copolymer is as unit of parts by weight, including following component: 3-5 parts of potassium hydroxide,
4-8 parts of propylene oxide, 1-4 parts of ethylene oxide, 2-3 parts of polyethylene polyamine.
Preferably, the polyoxyethylene groups ester copolymer is as unit of parts by weight, including following component: polyvinylpyrrolidine
5-8 parts of ketone, 2-4 parts of polyoxyethylene stearic acid ester, α -1-5 parts of sodium olefin sulfonate, 2-6 parts of ethoxylated alkyl sodium sulfonate, emulsification
0.3-0.7 parts of agent, 0.5-0.8 parts of stabilizer, 0.2-0.5 parts of ABS surface activating agent, 2.4-2.8 parts of xanthan gum, 50-70 parts of water.
Preferably, the emulsifier is tribenzyl phenol polyethenoxy ether, in alkyl phenol polyoxyethylene ether polyethenoxy ether
It is a kind of.
Preferably, the stabilizer is one of sodium carboxymethylcellulose, polyacrylamide.
Preferably, the nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and triblock polyether copolymerization
The total weight and oil well liquid-producing volume ratio of object are 1-3 grams: 1-1.2 liter.
The invention has the following advantages:
(1) by the data of embodiment 1-3 and comparative example 5 as it can be seen that being produced using the crude oil that the method for embodiment 1-3 obtains
The dehydration rate for the crude oil Produced Liquid that the dehydration rate of liquid is obtained significantly greater than with the method for comparative example 5；Simultaneously by embodiment 1-3's
Data are as it can be seen that embodiment 1 is optimum embodiment.
(2) by embodiment 1 and the data of comparative example 1-4 as it can be seen that nonylphenol polyoxyethylene ether polymer, polyoxyethylene base ester
Copolymer and triblock polyether copolymer play synergistic effect during thickened oil recovery, and collaboration improves crude oil Produced Liquid
Dehydration rate；This is:
The triblock polyether copolymer that the present invention uses has very high surface-active, and hydrophilic group has positive charge, can
To neutralize water drops surface negative electrical charge, the alkyl chain in molecule possesses lipophilicity, is easy to be adsorbed on oil droplets, plays breaking emulsion and dewatering
Effect, while triblock polyether copolymer is easy to be adsorbed on oil-water interfacial film, reduces the stability of film, convenient for grease point
From.Contain polar hydrophilic group such as hydroxyl, sulfonic group, ether in the nonylphenol polyoxyethylene ether polymer molecule that the present invention uses
Base, alkyl and non-polar hydrophobic groups alkyl, therefore there is surface-active, micella can be formed in water, it is total with triblock polyether
There are competitive Adsorption between polymers molecule, the space behavior and electrostatic repulsion of nonylphenol polyoxyethylene ether polymer molecule make
It obtains more hydrone to penetrate into inside triblock polyether copolymer molecule micella, triblock polyether copolymer molecule is caused to be formed
Micellar structure it is more open, aggregation number of micelle reduce so that crude oil Produced Liquid is easy to be dehydrated；In addition, the nonyl phenol of small molecule
Polyoxyethylene ether polymer is easy to the Preferential adsorption on oil-water interfaces, inhibits triblock polyether copolymer molecule poly- on interface
Collection effect, causes the molecules align on interface loose, and interfacial film strength weakens, and nonylphenol polyoxyethylene ether polymer and three embedding
The repulsive interaction generated between section copolyether molecule, reduces triblock polyether copolymer and nonylphenol polyoxyethylene ether is poly-
Absorption of the adduct molecule in crude oil interface, it is suppressed that film spreading amount facilitates the demulsification of crude oil Produced Liquid, so that dehydration rate liter
It is high.Alkyl has lipophilicity, the mixing with triblock polyether copolymer in polyoxyethylene groups ester copolymer used in the present invention
It is generated in system, between the hydrophobic part of triblock polyether copolymer and the hydrophobic grouping of polyoxyethylene groups ester copolymer strong hydrophobic
Effect forms mixed micelle, due to containing polyoxyethylene stearic acid ester in polyoxyethylene groups ester copolymer ingredient, in lipid material
The micellar structure that existing steric hindrance itself causes triblock polyether copolymer molecule to be formed is of a relatively loose, and partial moisture seeps
Thoroughly to inside micella, interfacial film strength weakens, and film spreading amount reduces, and dehydration rate improves.
(3) by the data of comparative example 6-8 as it can be seen that nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and
The weight ratio of triblock polyether copolymer is not at (4.2-6.4): (3.5-4.6): when in (3.5-5.8) range, opening for petroleum
The numerical value of dehydration rate and embodiment 1-3 when adopting in crude oil Produced Liquid is very different, and existing much smaller than the numerical value of embodiment 1-3
There is the numerical value of technology (comparative example 5) suitable.Nonylphenol polyoxyethylene ether polymer of the present invention, polyoxyethylene groups ester copolymer and three
For block polyether copolymer as reinforcement system, it is total that embodiment 1-3 controls nonylphenol polyoxyethylene ether polymer, polyoxyethylene base ester
The weight ratio of polymers and triblock polyether copolymer is (4.2-6.4): (3.5-4.6): (3.5-5.8), is realized in reinforcement system
It is middle to be adsorbed on oil droplets using triblock polyether copolymer and play the role of breaking emulsion and dewatering；Nonylphenol polyoxyethylene ether polymer
Space behavior and electrostatic repulsion cause triblock polyether copolymer molecule formed micellar structure it is more open；Polyoxy second
The space steric effect of alkenyl ester copolymer causes so that spies such as partial moisture penetrate into inside micella, and interfacial film strength weakens
Point, so that the reinforcement that nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and triblock polyether copolymer are constituted
System improves the dehydration rate of crude oil Produced Liquid in oil exploitation of the invention.
Specific embodiment
In order to better understand the present invention, it is now illustrated using following embodiment, following embodiment belongs to of the invention
Protection scope, but do not limit the scope of the invention.
The oil exploitation method, comprising the following steps:
S1: preparation nonylphenol polyoxyethylene ether polymer, the nonylphenol polyoxyethylene ether polymer are single with parts by weight
Position, including following component: 2-6 parts of sodium hydroxide, 3-7 parts of polyethylene polyamine, 7-12 parts of sodium carbonate, nonylphenol polyoxyethylene ether sulphur
Sour sodium 3-6 parts, 4-8 parts of sodium bicarbonate, 60-80 parts of water；
The method for preparing nonylphenol polyoxyethylene ether polymer: by three kinds of sodium hydroxide, sodium carbonate and sodium bicarbonate components
It is proportionally added into reaction kettle, 20% water is added after being slowly warming up to 50-60 DEG C, stirs 30-40min, is then being stirred continuously
In the case where sequentially add polyethylene polyamine, nonylphenol polyoxyethylene ether sodium sulfonate, be eventually adding water, it is stirring while adding, stirring
20-25min stops heating, is cooled to room temperature discharging, obtains nonylphenol polyoxyethylene ether polymer；
S2: preparing triblock polyether copolymer, and the triblock polyether copolymer is as unit of parts by weight, including with the following group
Part: 3-5 parts of potassium hydroxide, 4-8 parts of propylene oxide, 1-4 parts of ethylene oxide, 2-3 parts of polyethylene polyamine；
The method for preparing triblock polyether copolymer: catalyst potassium hydroxide being added in a high pressure reaction kettle, is filled with nitrogen,
It vacuumizes, is warming up to 125-135 DEG C, then 60% propylene oxide is added dropwise into reaction kettle, control the pressure of reaction kettle in 0.5MPa
Hereinafter, polyethylene polyamine reaction 1-2h is added, the oleophylic head of polypropylene oxide is obtained；Adjust temperature to 115-125 DEG C, again to
Be added dropwise ethylene oxide in reaction kettle, control reactor pressure in 0.5MPa hereinafter, to material reaction pressure completely and in reaction kettle
After being reduced to initial value, polyethylene polyamine is added, the reaction was continued at such a temperature 1-2h obtains polyethylene oxide hydrophilic head, then
It is warming up to 125-135 DEG C, then 40% propylene oxide is added dropwise into reaction kettle, controls the pressure of reaction kettle in 0.5MPa hereinafter, anti-
1-2h is answered, is cooled down after the reaction was completed, white solid three block type polyethers triblock polyether copolymer is obtained；
S3: preparation polyoxyethylene groups ester copolymer, the polyoxyethylene groups ester copolymer as unit of parts by weight, including with
Lower component: 5-8 parts of polyvinylpyrrolidone, 2-4 parts of polyoxyethylene stearic acid ester, α -1-5 parts of sodium olefin sulfonate, ethoxylation alkane
2-6 parts of base sodium sulfonate, 0.3-0.7 parts of emulsifier, 0.5-0.8 parts of stabilizer, 0.2-0.5 parts of ABS surface activating agent, xanthan gum
2.4-2.8 50-70 parts of part, water；The emulsifier is tribenzyl phenol polyethenoxy ether, alkyl phenol polyoxyethylene ether polyethenoxy ether
One of；The stabilizer is one of sodium carboxymethylcellulose, polyacrylamide；
The method for preparing polyoxyethylene groups ester copolymer: polyvinylpyrrolidone, α-olefin sulfonic acid are added in a kettle
Sodium and 30% water, stirring and dissolving, constant temperature 10min, sequentially adds stearic acid polyoxyethylene after reaction kettle is warming up to 40-45 DEG C
Ester, ethoxylated alkyl sodium sulfonate, emulsifier, stabilizer, ABS surface activating agent, xanthan gum stirring and dissolving and remaining water, heating
Constant temperature 10min is after to 60-65 DEG C to get polyoxyethylene groups ester copolymer；
S4: recover the oil: water and nonylphenol polyoxyethylene ether polymer are 100: 0.8-1.5 to be uniformly mixed and be configured to by weight
Oil reservoir squeezes into liquid, then oil reservoir is squeezed into liquid and squeezes into oil reservoir, and build the pressure 24-48h；Then it is lifted using pumping unit or screw pump lifting equipment
Extraction well liquid is risen, polyoxyethylene groups ester copolymer and triblock polyether copolymerization is added in the annular space between oil well oil conduit and casing
Object, while lifting extraction well liquid；Nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and the three block is poly-
The weight ratio of ether copolymer is (4.2-6.4): (3.5-4.6): (3.5-5.8)；The nonylphenol polyoxyethylene ether polymer gathers
The total weight of oxyethylene group ester copolymer and triblock polyether copolymer and oil well liquid-producing volume ratio are 1-3 grams: 1-1.2 liter.
Embodiment 1
A kind of oil exploitation method, comprising the following steps:
S1: preparation nonylphenol polyoxyethylene ether polymer, the nonylphenol polyoxyethylene ether polymer are single with parts by weight
Position, including following component: 4 parts of sodium hydroxide, 7 parts of polyethylene polyamine, 9 parts of sodium carbonate, nonylphenol polyoxyethylene ether sodium sulfonate 3
Part, 4 parts of sodium bicarbonate, 70 parts of water；
The method for preparing nonylphenol polyoxyethylene ether polymer: by three kinds of sodium hydroxide, sodium carbonate and sodium bicarbonate components
It is proportionally added into reaction kettle, 20% water is added after being slowly warming up to 60 DEG C, 35min is stirred, then the case where being stirred continuously
Under sequentially add polyethylene polyamine, nonylphenol polyoxyethylene ether sodium sulfonate, be eventually adding water, it is stirring while adding, stir 20min,
Stop heating, is cooled to room temperature discharging, obtains nonylphenol polyoxyethylene ether polymer；
S2: preparing triblock polyether copolymer, and the triblock polyether copolymer is as unit of parts by weight, including with the following group
Part: 5 parts of potassium hydroxide, 4 parts of propylene oxide, 3 parts of ethylene oxide, 2.5 parts of polyethylene polyamine；
The method for preparing triblock polyether copolymer: catalyst potassium hydroxide being added in a high pressure reaction kettle, is filled with nitrogen,
Vacuumize, be warming up to 135 DEG C, then 60% propylene oxide is added dropwise into reaction kettle, control the pressure of reaction kettle in 0.5MPa hereinafter,
Polyethylene polyamine reaction 1.5h is added, obtains the oleophylic head of polypropylene oxide；Temperature is adjusted to 120 DEG C, again into reaction kettle
Ethylene oxide is added dropwise, control reactor pressure in 0.5MPa hereinafter, to material reaction completely and in reaction kettle pressure reduction to first
After initial value, polyethylene polyamine is added, the reaction was continued at such a temperature 1.5h obtains polyethylene oxide hydrophilic head, then be warming up to 125
DEG C, then 40% propylene oxide is added dropwise into reaction kettle, the pressure of reaction kettle is controlled in 0.5MPa hereinafter, reaction 1h, reaction are completed
After cool down, obtain white solid three block type polyethers triblock polyether copolymer；
S3: preparation polyoxyethylene groups ester copolymer, the polyoxyethylene groups ester copolymer as unit of parts by weight, including with
Lower component: 5 parts of polyvinylpyrrolidone, 3 parts of polyoxyethylene stearic acid ester, 1 part of α-sodium olefin sulfonate, ethoxylated alkyl sulfonic acid
6 parts of sodium, 0.5 part of tribenzyl phenol polyethenoxy ether, 0.7 part of sodium carboxymethylcellulose .5 parts of ABS surface activating agent, xanthan gum 2.4
Part, 70 parts of water；
The method for preparing polyoxyethylene groups ester copolymer: polyvinylpyrrolidone, α-olefin sulfonic acid are added in a kettle
Sodium and 30% water, stirring and dissolving, constant temperature 10min after reaction kettle is warming up to 42 DEG C, sequentially add polyoxyethylene stearic acid ester,
Ethoxylated alkyl sodium sulfonate, tribenzyl phenol polyethenoxy ether, sodium carboxymethylcellulose, ABS surface activating agent, xanthan gum stirring
Dissolution and remaining water, constant temperature 10min is after being warming up to 63 DEG C to get polyoxyethylene groups ester copolymer；
S4: recover the oil: water and nonylphenol polyoxyethylene ether polymer are to be uniformly mixed be configured to oil reservoir at 100: 1.3 by weight
Liquid is squeezed into, then oil reservoir is squeezed into liquid and squeezes into oil reservoir, is built the pressure for 24 hours；Then using pumping unit or the lifting extraction of screw pump lifting equipment
Polyoxyethylene groups ester copolymer and triblock polyether copolymer is added in well liquid, the annular space between oil well oil conduit and casing, simultaneously
Lifting extraction well liquid；Nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and the triblock polyether copolymerization
The weight ratio of object is 5.3:4.2:4.6；The nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and three block
The total weight and oil well liquid-producing volume ratio of copolyether are 1 gram: 1 liter.
Embodiment 2
A kind of oil exploitation method, comprising the following steps:
S1: preparation nonylphenol polyoxyethylene ether polymer, the nonylphenol polyoxyethylene ether polymer are single with parts by weight
Position, including following component: 6 parts of sodium hydroxide, 3 parts of polyethylene polyamine, 12 parts of sodium carbonate, nonylphenol polyoxyethylene ether sodium sulfonate 5
Part, 6 parts of sodium bicarbonate, 80 parts of water；
The method for preparing nonylphenol polyoxyethylene ether polymer: by three kinds of sodium hydroxide, sodium carbonate and sodium bicarbonate components
It is proportionally added into reaction kettle, 20% water is added after being slowly warming up to 50 DEG C, 40min is stirred, then the case where being stirred continuously
Under sequentially add polyethylene polyamine, nonylphenol polyoxyethylene ether sodium sulfonate, be eventually adding water, it is stirring while adding, stir 22min,
Stop heating, is cooled to room temperature discharging, obtains nonylphenol polyoxyethylene ether polymer；
S2: preparing triblock polyether copolymer, and the triblock polyether copolymer is as unit of parts by weight, including with the following group
Part: 3 parts of potassium hydroxide, 6 parts of propylene oxide, 4 parts of ethylene oxide, 3 parts of polyethylene polyamine；
The method for preparing triblock polyether copolymer: catalyst potassium hydroxide being added in a high pressure reaction kettle, is filled with nitrogen,
Vacuumize, be warming up to 125 DEG C, then 60% propylene oxide is added dropwise into reaction kettle, control the pressure of reaction kettle in 0.5MPa hereinafter,
Polyethylene polyamine reaction 2h is added, obtains the oleophylic head of polypropylene oxide；Temperature is adjusted to 125 DEG C, is dripped again into reaction kettle
Add ethylene oxide, control reactor pressure in 0.5MPa hereinafter, to material reaction completely and in reaction kettle pressure reduction to initial
After value, polyethylene polyamine is added, the reaction was continued at such a temperature 2h obtains polyethylene oxide hydrophilic head, then be warming up to 130 DEG C,
40% propylene oxide is added dropwise into reaction kettle again, controls the pressure of reaction kettle in 0.5MPa hereinafter, reacting 1.5h, after the reaction was completed
Cooling, obtains white solid three block type polyethers triblock polyether copolymer；
S3: preparation polyoxyethylene groups ester copolymer, the polyoxyethylene groups ester copolymer as unit of parts by weight, including with
Lower component: 6 parts of polyvinylpyrrolidone, 4 parts of polyoxyethylene stearic acid ester, 3 parts of α-sodium olefin sulfonate, ethoxylated alkyl sulfonic acid
2 parts of sodium, 0.7 part of alkyl phenol polyoxyethylene ether polyethenoxy ether, 0.8 part of polyacrylamide, 0.2 part of ABS surface activating agent, xanthan
2.6 parts of glue, 50 parts of water；
The method for preparing polyoxyethylene groups ester copolymer: polyvinylpyrrolidone, α-olefin sulfonic acid are added in a kettle
Sodium and 30% water, stirring and dissolving, constant temperature 10min after reaction kettle is warming up to 45 DEG C, sequentially add polyoxyethylene stearic acid ester,
Ethoxylated alkyl sodium sulfonate, alkyl phenol polyoxyethylene ether polyethenoxy ether, polyacrylamide, ABS surface activating agent, xanthan gum
Stirring and dissolving and remaining water, constant temperature 10min is after being warming up to 65 DEG C to get polyoxyethylene groups ester copolymer；
S4: recover the oil: water and nonylphenol polyoxyethylene ether polymer are to be uniformly mixed be configured to oil reservoir at 100: 1.5 by weight
Liquid is squeezed into, then oil reservoir is squeezed into liquid and squeezes into oil reservoir, build the pressure 36h；Then using pumping unit or the lifting extraction of screw pump lifting equipment
Polyoxyethylene groups ester copolymer and triblock polyether copolymer is added in well liquid, the annular space between oil well oil conduit and casing, simultaneously
Lifting extraction well liquid；Nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and the triblock polyether copolymerization
The weight ratio of object is 6.4:4.6:5.8；The nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and three block
The total weight and oil well liquid-producing volume ratio of copolyether are 2 grams: 1.1 liters.
Embodiment 3
A kind of oil exploitation method, comprising the following steps:
S1: preparation nonylphenol polyoxyethylene ether polymer, the nonylphenol polyoxyethylene ether polymer are single with parts by weight
Position, including following component: 2 parts of sodium hydroxide, 5 parts of polyethylene polyamine, 7 parts of sodium carbonate, nonylphenol polyoxyethylene ether sodium sulfonate 6
Part, 8 parts of sodium bicarbonate, 60 parts of water；
The method for preparing nonylphenol polyoxyethylene ether polymer: by three kinds of sodium hydroxide, sodium carbonate and sodium bicarbonate components
It is proportionally added into reaction kettle, 20% water is added after being slowly warming up to 55 DEG C, 30min is stirred, then the case where being stirred continuously
Under sequentially add polyethylene polyamine, nonylphenol polyoxyethylene ether sodium sulfonate, be eventually adding water, it is stirring while adding, stir 25min,
Stop heating, is cooled to room temperature discharging, obtains nonylphenol polyoxyethylene ether polymer；
S2: preparing triblock polyether copolymer, and the triblock polyether copolymer is as unit of parts by weight, including with the following group
Part: 4 parts of potassium hydroxide, 8 parts of propylene oxide, 1 part of ethylene oxide, 2 parts of polyethylene polyamine；
The method for preparing triblock polyether copolymer: catalyst potassium hydroxide being added in a high pressure reaction kettle, is filled with nitrogen,
Vacuumize, be warming up to 130 DEG C, then 60% propylene oxide is added dropwise into reaction kettle, control the pressure of reaction kettle in 0.5MPa hereinafter,
Polyethylene polyamine reaction 1h is added, obtains the oleophylic head of polypropylene oxide；Temperature is adjusted to 115 DEG C, is dripped again into reaction kettle
Add ethylene oxide, control reactor pressure in 0.5MPa hereinafter, to material reaction completely and in reaction kettle pressure reduction to initial
After value, polyethylene polyamine is added, the reaction was continued at such a temperature 1h obtains polyethylene oxide hydrophilic head, then be warming up to 135 DEG C,
40% propylene oxide is added dropwise into reaction kettle again, controls the pressure of reaction kettle in 0.5MPa hereinafter, reaction 2h, drops after the reaction was completed
Temperature obtains white solid three block type polyethers triblock polyether copolymer；
S3: preparation polyoxyethylene groups ester copolymer, the polyoxyethylene groups ester copolymer as unit of parts by weight, including with
Lower component: 8 parts of polyvinylpyrrolidone, 2 parts of polyoxyethylene stearic acid ester, 5 parts of α-sodium olefin sulfonate, ethoxylated alkyl sulfonic acid
4 parts of sodium, 0.3 part of tribenzyl phenol polyethenoxy ether, 0.5 part of polyacrylamide, 0.3 part of ABS surface activating agent, 2.8 parts of xanthan gum,
60 parts of water；
The method for preparing polyoxyethylene groups ester copolymer: polyvinylpyrrolidone, α-olefin sulfonic acid are added in a kettle
Sodium and 30% water, stirring and dissolving, constant temperature 10min after reaction kettle is warming up to 40 DEG C, sequentially add polyoxyethylene stearic acid ester,
Ethoxylated alkyl sodium sulfonate, tribenzyl phenol polyethenoxy ether, polyacrylamide, ABS surface activating agent, xanthan gum stirring and dissolving
With remaining water, constant temperature 10min is after being warming up to 60 DEG C to get polyoxyethylene groups ester copolymer；
S4: recover the oil: water and nonylphenol polyoxyethylene ether polymer are to be uniformly mixed be configured to oil reservoir at 100: 0.8 by weight
Liquid is squeezed into, then oil reservoir is squeezed into liquid and squeezes into oil reservoir, build the pressure 48h；Then using pumping unit or the lifting extraction of screw pump lifting equipment
Polyoxyethylene groups ester copolymer and triblock polyether copolymer is added in well liquid, the annular space between oil well oil conduit and casing, simultaneously
Lifting extraction well liquid；Nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and the triblock polyether copolymerization
The weight ratio of object is 4.2:3.5:3.5；The nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and three block
The total weight and oil well liquid-producing volume ratio of copolyether are 3 grams: 1.2 liters.
Comparative example 1
Oil exploitation method is substantially the same manner as Example 1, the difference is that, nonyl phenol is not used during oil exploitation
Polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and triblock polyether copolymer.
Comparative example 2
Oil exploitation method is substantially the same manner as Example 1, the difference is that, nonyl phenol is not used during oil exploitation
Polyoxyethylene ether polymer.
Comparative example 3
Oil exploitation method is substantially the same manner as Example 1, the difference is that, polyoxy second is not used during oil exploitation
Alkenyl ester copolymer.
Comparative example 4
Oil exploitation method is substantially the same manner as Example 1, the difference is that, three block is not used during oil exploitation
Copolyether.
Comparative example 5
Using side disclosed in Chinese patent literature " a kind of method of thickened oil recovery (patent No. ZL 200810117487.6) "
Method carries out oil exploitation.
Comparative example 6
Oil exploitation method is substantially the same manner as Example 1, the difference is that, it is poly- using nonyl phenol during oil exploitation
The weight ratio of ethylene oxide ether polymer, polyoxyethylene groups ester copolymer and triblock polyether copolymer is 1:8:9.
Comparative example 7
Oil exploitation method is substantially the same manner as Example 1, the difference is that, it is poly- using nonyl phenol during oil exploitation
The weight ratio of ethylene oxide ether polymer, polyoxyethylene groups ester copolymer and triblock polyether copolymer is 9:1:2.
Comparative example 8
Oil exploitation method is substantially the same manner as Example 1, the difference is that, it is poly- using nonyl phenol during oil exploitation
The weight ratio of ethylene oxide ether polymer, polyoxyethylene groups ester copolymer and triblock polyether copolymer is 1:8:1.
According to Shengli Petroleum Administration Bureau company standard Q/SL1419-1999 " crude oil demulsification dehydration service check method tool plug
Graduated cylinder method " dehydration rate for using the crude oil Produced Liquid of the acquisition of method described in embodiment 1-3 and comparative example 1-8 is measured, through detecting
Crude oil Produced Liquid density is (50 DEG C) 0.9879/g.cm3, viscosity is 3.432 × 104, moisture content 30.1%, by the de- of 5h
Water, detects the moisture content of crude oil Produced Liquid again, and calculates dehydration rate, as a result see the table below shown.
| Experimental project | Dehydration rate (%) |
| Embodiment 1 | 99.36 |
| Embodiment 2 | 98.03 |
| Embodiment 3 | 98.85 |
| Comparative example 1 | 3.45 |
| Comparative example 2 | 97.83 |
| Comparative example 3 | 97.98 |
| Comparative example 4 | 98.23 |
| Comparative example 5 | 95.69 |
| Comparative example 6 | 95.86 |
| Comparative example 7 | 96.32 |
| Comparative example 8 | 96.74 |
As seen from the above table: (1) by the data of embodiment 1-3 and comparative example 5 as it can be seen that being obtained using the method for embodiment 1-3
To crude oil Produced Liquid the dehydration rate of crude oil Produced Liquid that is obtained significantly greater than with the method for comparative example 5 of dehydration rate；Simultaneously
By the data of embodiment 1-3 as it can be seen that embodiment 1 is optimum embodiment.
(2) by embodiment 1 and the data of comparative example 1-4 as it can be seen that nonylphenol polyoxyethylene ether polymer, polyoxyethylene base ester
Copolymer and triblock polyether copolymer play synergistic effect during thickened oil recovery, and collaboration improves crude oil Produced Liquid
Dehydration rate；This is:
The triblock polyether copolymer that the present invention uses has very high surface-active, and hydrophilic group has positive charge, can
To neutralize water drops surface negative electrical charge, the alkyl chain in molecule possesses lipophilicity, is easy to be adsorbed on oil droplets, plays breaking emulsion and dewatering
Effect, while triblock polyether copolymer is easy to be adsorbed on oil-water interfacial film, reduces the stability of film, convenient for grease point
From.Contain polar hydrophilic group such as hydroxyl, sulfonic group, ether in the nonylphenol polyoxyethylene ether polymer molecule that the present invention uses
Base, alkyl and non-polar hydrophobic groups alkyl, therefore there is surface-active, micella can be formed in water, it is total with triblock polyether
There are competitive Adsorption between polymers molecule, the space behavior and electrostatic repulsion of nonylphenol polyoxyethylene ether polymer molecule make
It obtains more hydrone to penetrate into inside triblock polyether copolymer molecule micella, triblock polyether copolymer molecule is caused to be formed
Micellar structure it is more open, aggregation number of micelle reduce so that crude oil Produced Liquid is easy to be dehydrated；In addition, the nonyl phenol of small molecule
Polyoxyethylene ether polymer is easy to the Preferential adsorption on oil-water interfaces, inhibits triblock polyether copolymer molecule poly- on interface
Collection effect, causes the molecules align on interface loose, and interfacial film strength weakens, and nonylphenol polyoxyethylene ether polymer and three embedding
The repulsive interaction generated between section copolyether molecule, reduces triblock polyether copolymer and nonylphenol polyoxyethylene ether is poly-
Absorption of the adduct molecule in crude oil interface, it is suppressed that film spreading amount facilitates the demulsification of crude oil Produced Liquid, so that dehydration rate liter
It is high.Alkyl has lipophilicity, the mixing with triblock polyether copolymer in polyoxyethylene groups ester copolymer used in the present invention
It is generated in system, between the hydrophobic part of triblock polyether copolymer and the hydrophobic grouping of polyoxyethylene groups ester copolymer strong hydrophobic
Effect forms mixed micelle, due to containing polyoxyethylene stearic acid ester in polyoxyethylene groups ester copolymer ingredient, in lipid material
The micellar structure that existing steric hindrance itself causes triblock polyether copolymer molecule to be formed is of a relatively loose, and partial moisture seeps
Thoroughly to inside micella, interfacial film strength weakens, and film spreading amount reduces, and dehydration rate improves.
(3) by the data of comparative example 6-8 as it can be seen that nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and
The weight ratio of triblock polyether copolymer is not at (4.2-6.4): (3.5-4.6): when in (3.5-5.8) range, opening for petroleum
The numerical value of dehydration rate and embodiment 1-3 when adopting in crude oil Produced Liquid is very different, and existing much smaller than the numerical value of embodiment 1-3
There is the numerical value of technology (comparative example 5) suitable.Nonylphenol polyoxyethylene ether polymer of the present invention, polyoxyethylene groups ester copolymer and three
For block polyether copolymer as reinforcement system, it is total that embodiment 1-3 controls nonylphenol polyoxyethylene ether polymer, polyoxyethylene base ester
The weight ratio of polymers and triblock polyether copolymer is (4.2-6.4): (3.5-4.6): (3.5-5.8), is realized in reinforcement system
It is middle to be adsorbed on oil droplets using triblock polyether copolymer and play the role of breaking emulsion and dewatering；Nonylphenol polyoxyethylene ether polymer
Space behavior and electrostatic repulsion cause triblock polyether copolymer molecule formed micellar structure it is more open；Polyoxy second
The space steric effect of alkenyl ester copolymer causes so that spies such as partial moisture penetrate into inside micella, and interfacial film strength weakens
Point, so that the reinforcement that nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and triblock polyether copolymer are constituted
System improves the dehydration rate of crude oil Produced Liquid in oil exploitation of the invention.
The above content is it cannot be assumed that present invention specific implementation is only limited to these instructions, for the technical field of the invention
Those of ordinary skill for, under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all answers
When being considered as belonging to present invention scope of patent protection determined by the appended claims.
Claims (8)
1. a kind of oil exploitation method, which comprises the following steps:
S1: preparation nonylphenol polyoxyethylene ether polymer, the nonylphenol polyoxyethylene ether polymer includes following component: hydrogen-oxygen
Change sodium, polyethylene polyamine, sodium carbonate, nonylphenol polyoxyethylene ether sodium sulfonate, sodium bicarbonate, surplus is water；
Prepare nonylphenol polyoxyethylene ether polymer method: by sodium hydroxide, three kinds of components of sodium carbonate and sodium bicarbonate press than
Example addition reaction kettle is added 20% water, 30-40min is stirred, then in the feelings being stirred continuously after being slowly warming up to 50-60 DEG C
Polyethylene polyamine, nonylphenol polyoxyethylene ether sodium sulfonate are sequentially added under condition, are eventually adding water, it is stirring while adding, stir 20-
25min stops heating, is cooled to room temperature discharging, obtains nonylphenol polyoxyethylene ether polymer；
S2: preparing triblock polyether copolymer, and the triblock polyether copolymer includes following component: potassium hydroxide, epoxy third
Alkane, ethylene oxide, polyethylene polyamine；
The method for preparing triblock polyether copolymer: being added catalyst potassium hydroxide in a high pressure reaction kettle, is filled with nitrogen, takes out true
Sky is warming up to 125-135 DEG C, then 60% propylene oxide is added dropwise into reaction kettle, control the pressure of reaction kettle in 0.5MPa hereinafter,
Polyethylene polyamine reaction 1-2h is added, obtains the oleophylic head of polypropylene oxide；Temperature is adjusted to 115-125 DEG C, again to reaction
Ethylene oxide is added dropwise in kettle, controls reactor pressure in 0.5MPa hereinafter, pressure reduction in and reaction kettle complete to material reaction
To initial value, polyethylene polyamine is added, the reaction was continued at such a temperature 1-2h obtains polyethylene oxide hydrophilic head, then heat up
To 125-135 DEG C, then 40% propylene oxide is added dropwise into reaction kettle, controls the pressure of reaction kettle in 0.5MPa hereinafter, reaction 1-
2h cools down after the reaction was completed, obtains white solid three block type polyethers triblock polyether copolymer；
S3: preparation polyoxyethylene groups ester copolymer, the polyoxyethylene groups ester copolymer includes following component: polyvinylpyrrolidine
Ketone, polyoxyethylene stearic acid ester, α-sodium olefin sulfonate, ethoxylated alkyl sodium sulfonate, emulsifier, stabilizer, ABS surface activity
Agent, xanthan gum；
Prepare polyoxyethylene groups ester copolymer method: in a kettle be added polyvinylpyrrolidone, α-sodium olefin sulfonate and
30% water, stirring and dissolving, constant temperature 10min after reaction kettle is warming up to 40-45 DEG C, sequentially add polyoxyethylene stearic acid ester,
Ethoxylated alkyl sodium sulfonate, emulsifier, stabilizer, ABS surface activating agent, xanthan gum stirring and dissolving and remaining water, are warming up to
Constant temperature 10min is after 60-65 DEG C to get polyoxyethylene groups ester copolymer；
S4: recover the oil: water and nonylphenol polyoxyethylene ether polymer are 100: 0.8-1.5 to be uniformly mixed and be configured to oil reservoir by weight
Liquid is squeezed into, then oil reservoir is squeezed into liquid and squeezes into oil reservoir, build the pressure 24-48h；Then it is adopted using pumping unit or the lifting of screw pump lifting equipment
Polyoxyethylene groups ester copolymer and triblock polyether copolymer is added in well liquid out, the annular space between oil well oil conduit and casing, together
Shi Jusheng produces well liquid；Nonylphenol polyoxyethylene ether polymer, polyoxyethylene groups ester copolymer and the triblock polyether is total
The weight ratio of polymers is (4.2-6.4): (3.5-4.6): (3.5-5.8).
2. oil exploitation method according to claim 1, which is characterized in that the nonylphenol polyoxyethylene ether polymerization
Object, polyoxyethylene groups ester copolymer and triblock polyether copolymer and oil well liquid-producing volume ratio are 5.3:4.2:4.6.
3. oil exploitation method according to claim 1, which is characterized in that the nonylphenol polyoxyethylene ether polymer with
Parts by weight are unit, including following component: 2-6 parts of sodium hydroxide, 3-7 parts of polyethylene polyamine, 7-12 parts of sodium carbonate, nonyl phenol are poly-
3-6 parts of ethylene oxide ether sulfonic acid sodium, 4-8 parts of sodium bicarbonate, 60-80 parts of water.
4. oil exploitation method according to claim 1, which is characterized in that the triblock polyether copolymer is with parts by weight
For unit, including following component: 3-5 parts of potassium hydroxide, 4-8 parts of propylene oxide, 1-4 parts of ethylene oxide, polyethylene polyamine 2-3
Part.
5. oil exploitation method according to claim 1, which is characterized in that the polyoxyethylene groups ester copolymer is with weight
Part is unit, including following component: 5-8 parts of polyvinylpyrrolidone, 2-4 parts of polyoxyethylene stearic acid ester, α-sodium olefin sulfonate
1-5 parts, 2-6 parts of ethoxylated alkyl sodium sulfonate, 0.3-0.7 parts of emulsifier, 0.5-0.8 parts of stabilizer, ABS surface activating agent
0.2-0.5 parts, 2.4-2.8 parts of xanthan gum, 50-70 parts of water.
6. oil exploitation method according to claim 1 or 5, which is characterized in that the emulsifier is tribenzyl phenol polyoxy
One of vinethene, alkyl phenol polyoxyethylene ether polyethenoxy ether.
7. oil exploitation method according to claim 1 or 5, which is characterized in that the stabilizer is carboxymethyl cellulose
One of sodium, polyacrylamide.
8. oil exploitation method according to claim 1, which is characterized in that the nonylphenol polyoxyethylene ether polymer,
The total weight of polyoxyethylene groups ester copolymer and triblock polyether copolymer and oil well liquid-producing volume ratio are 1-3 grams: 1-1.2 liter.
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