CN107288596A - A kind of method that oil recovery factor is improved based on organic base ternary composite driving - Google Patents
A kind of method that oil recovery factor is improved based on organic base ternary composite driving Download PDFInfo
- Publication number
- CN107288596A CN107288596A CN201610191049.9A CN201610191049A CN107288596A CN 107288596 A CN107288596 A CN 107288596A CN 201610191049 A CN201610191049 A CN 201610191049A CN 107288596 A CN107288596 A CN 107288596A
- Authority
- CN
- China
- Prior art keywords
- oil
- injection
- surfactant
- organic base
- ternary composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
Abstract
The invention discloses a kind of method that oil deposil erude petroleum recovery ratio after drive is improved based on organic base ternary composite driving, belong to the chemical displacement of reservoir oil field for improving oil deposil erude petroleum recovery ratio.This method compounds oil displacement surfactant and polymer with organic base, forms homogeneous mixture solotion, and preposed attributives and protection slug are respectively provided with before and after injection from combination flooding test unit injection well injection stratum with 0.3~0.5PV injection rate.Compared with prior art, the present invention has good fluidity control ability and washing oil ability for the oil reservoir of postpolymerflooded reservoirs serious heterogeneity, organic base ternary composite oil-displacing system can overcome inorganic base to bring the serious shortcoming of fouling to injected system, and this method can improve postpolymer flood oil recovery factor more than 15%.
Description
Technical field
It is more particularly to a kind of that crude oil is improved based on organic base ternary composite driving the present invention relates to reservoir chemical flooding oil tech field
The method of recovery ratio.
Background technology
In oil development work, it is an eternal theme to improve oil recovery factor.It is main for recovery ratio approach is improved
There are two：One is to expand sweep efficiency, and two be to improve displacement efficiency.Combination flooding refer to two or more displacement of reservoir oil into
The driving of packet altogether.It is alkali/Surfactant/Polymer (ASP) tri compound using a kind of wide chemical flooding
Drive, it grows up on the basis of caustic waterflooding, active water drive and polymer flooding, used various chemical agents it is dense
Degree is all relatively low, is at home and abroad widely applied, and mining site can improve recovery ratio more than 20% using the method.
Mainly there be the effect of alkali in ternary composite displacement system：A. surface reactive material is generated with the organic acid reaction in crude oil,
And synergy is produced with the surfactant added, increase interfacial activity, reduce the consumption of surfactant.B. alkali with
The surfactant that oil acid reaction is produced and the surfactant of synthesis have cooperative effect, widen the activity of surfactant
Scope.C. rock particles surface electrical behavior, the adsorbance of reduction surfactant and polymer on a rock surface are improved.d.
Alkali can carry out ion exchange with calcium, magnesium ion reaction or with clay, play sacrifice agent, protect polymer and surface
Activating agent.
At present, the alkali used in the ternary composite driving of domestic and international application is inorganic base, mainly including NaOH, Na2CO3,
NaHCO3Deng to slow down reaction of the displacing fluid with rock, should try one's best avoids using highly basic (such as NaOH and KOH), and answers
Use weak base (such as Na2CO3, NaHCO3Deng).For ease of control ph and ionic strength, carried out frequently with highly basic and weak base
The compounding of proper proportion.
But, inorganic base either highly basic or weak base there are problems that all brought to chemical flooding：First, it is inorganic
The presence of alkali makes injection and extraction system fouling serious, by taking the ternary composite driving of Gudao area of Shengli Oilfield West as an example, due to injection device knot
It is dirty serious, dirty removing processing will be carried out to injected system within average 20 days, and have a strong impact on injection process；Secondly, inorganic base
Make Produced Liquid emulsification serious, water-oil separating difficulty；Moreover, inorganic base increases polymer degree of hydrolysis, make polymer anti-two
Valency ion energy is reduced, so inorganic base ternary composite driving will be increased using the concentration of polymer under the conditions of identical viscosities, is led
Cause cost increase.
Carry out the advantage of ternary composite driving based on Shengli Oil Field, there is the problem of causing to solve above-mentioned chemical flooding inorganic base,
Shengli Oil Field has carried out binary combination flooding technical research, binary combination flooding mainly use surfactant improve displacement efficiency,
Polymer improves swept volume, and oil recovery factor is improved by both cooperative effects.Shengli Oil Field was carried out in 2003
The western binary combination flooding pilot test in the areas of Gu Dong seven, achieves obvious decreasing water cut and increasing oil effect, and centerwell is tired to increase 11.3 ten thousand tons of oil,
But with ternary composite driving ratio, binary combination flooding improves recovery ratio amplitude and is less than ternary composite driving.Therefore, need badly in ternary
Combination flooding finds a kind of replacement alkali in implementing, the advantage of inorganic base should be played, while again inorganic base fouling can be overcome serious
The problem of.
In addition, triumph main force oil field successively have passed through a natural energy exploitation, secondary water drive, three polymer flooding exploitations
In the stage, recovery ratio is more than 50%, and comprehensive water cut is up to 97.5%, this kind of oil reservoir serious heterogeneity (permeability, variation lines
Number increase), waterflood efficiency is low.Polymer flooding year oil increment also drops to 400,000 tons, but this kind of reservoir geology by 1,500,000 tons
Reserves are big, up to 3.1 hundred million tons, and postpolymer flood still has the crude oil of nearly half to be trapped in underground mining not come out, therefore, explore
This kind of oil reservoir further greatly improves the technical method of recovery ratio, the challenge recovery ratio limit and had important practical significance.
The content of the invention
The present invention provides a kind of based on organic base combination flooding to make up the deficiencies in the prior art for postpolymerflooded reservoirs
Improve oil recovery factor method.The flooding method can avoid injection device fouling well, without frequently entering to injected system
Row dirty removing processing, accelerates injection process, and cost is low, oil recovery factor is high, solves problems of the prior art.
The present invention is achieved through the following technical solutions：
A kind of method that oil recovery factor is improved based on organic base ternary composite driving, including following operating procedure：
(1) by super high molecular weight polymer be added to oil field injection sewage in be made concentration be 500-2500mg/L polymer it is molten
Liquid, it is standby；
(2) surfactant and organic base are added separately to that concentration is made for 3000-5000mg/L in oil field injection sewage
Surfactant solution and concentration be 1000-3000mg/L organic alkali solution, it is standby；
(3) surfactant solution is pressed：Organic alkali solution：Polymer solution=2:1:1 weight ratio, to step (1)
Surfactant solution and organic alkali solution made from step (2) are separately added into obtained polymer solution, mixture is uniform
Ternary composite driving is obtained, it is standby；
(4) by polymer solution made from step (1) using the injection rate of 0.05~0.1 times of formation pore volume as preceding
Put in slug injection water injection well；
(5) ternary composite driving made from step (3) is continued with the injection rate of 0.3-0.5 times of formation pore volume to inject
In water injection well；
(6) polymer solution is made in step (1) and protection is used as using the injection rate of 0.05-0.1 times of formation pore volume
Slug is finally injected in water injection well；
Wherein, the super high molecular weight polymer refers to that intrinsic viscosity is more than 3500mL/g water-soluble portion hydrolysis polypropylene
Acid amides；
The surfactant is anionic surfactant, nonionic surface active agent or cloudy non-amophoteric surface active
The compound system of agent；
The organic base is amine organic base.
The anionic surfactant is alkylbenzenesulfonate, alkylbenzene carboxylates, petroleum sulfonate；It is described it is non-from
Subtype surfactant is alkanolamide, alkyl alcohol ethoxylates.
The concentration of step (4) described polymer solution is 2000-2500mg/L.
The concentration of step (6) described polymer solution is 500-800mg/L.
The oil field injection sewage is the mixing water of Huanghe water, oil field recharged waste water or Huanghe water and oil field recharged waste water.
Beneficial effects of the present invention：The present invention is applicable very much based on the method that organic base ternary composite driving improves oil recovery factor
In temperature be not higher than 85 DEG C, salinity it is low less than 1000mg/L, viscosity of crude less than 50000mg/L, calcium ions and magnesium ions concentration
In oil reservoir viscosity 200mPas, permeability be 500~10000 × 10-3μm2Postpolymerflooded reservoirs and heterogeneous reservoir.
This method note well eliminates a series of problems that inorganic base ternary composite driving is brought to chemical flooding with ternary composite driving well,
Injection and extraction system fouling is avoided that, without frequently carrying out dirty removing processing to injected system, injection process is substantially increased；Adopt
Go out liquid processing simple；Cost is low；Substantially increase recovery ratio.By being injected before ternary composite driving injection in injection well
High concentration preposed attributives, can reach high-amplitude wave and, the effect of high fluidity control, eliminate postpolymerflooded reservoirs heterogeneous
Seriously, the problem of Reservoir Permeability, pore throat radius become big.By setting protection slug after ternary composite driving, by superelevation
Injection well after molecularweight polymer solution injection ternary composite driving, prevents fingering and the crossfire of sequent water flooding, makes main body slug
Can uniformly it promote.
Brief description of the drawings：
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is organic base ternary composite oil-displacing system INTERFACIAL TENSION CURVES；
Fig. 2 is organic base ternary composite driving displacement curve.
Embodiment：
For that can understand the technical characterstic for illustrating this programme, below by embodiment, the present invention will be described in detail.
Experimental example 1：
For the area Ng5 of Gudong field seven4-61Oil reservoir, 70 DEG C of reservoir temperature, 13-151 well viscosity of crude 63mPa.s,
Water (salinity 1072mg/L, Ca are injected in east three2+、Mg2+350mg/L).The monoethanolamine compounding 3000mg/L of configuration 0.2%
Single cloudy non-amphoteric surfactant alkyl alcohol ethoxylates carboxylate, 1500mg/L intrinsic viscosity 3677mL/g
Super high molecular weight polymer HJ three-component compound systems, the oil-water interfaces surveyed under the area's reservoir condition of Gudong field three or four
Tension force is 1.5 × 10-3MN/m (curve is shown in Fig. 1), viscosity is 25.2mPas.
Permeability extreme difference is used for 1：3 heterogeneous quartz sand filling tubular model (model diameter 2.5cm, long 30cm)
Physical simulation experiment is carried out, carries out start injection after 0.15% polymer flooding, postpolymer flood comprehensive water cut 94% first
0.2% super high molecular weight polymer HJ preposed attributives 0.1PV, are then injected into organic base ternary composite oil-displacing system 0.3PV,
The rearmounted protection slug of 0.1% polymer is reinjected, finally turns water drive and terminates to test to comprehensive water cut more than 98%, lonely east oil
Organic base ternary composite oil-displacing system is in (the displacement of Improving Oil Recovery after Polymer Flood 16.9% under pseudo-ginseng area reservoir condition
Curve is shown in Fig. 2).
Experimental example 2：
For Gudao oilfield B19 postpolymerflooded reservoirs, 68 DEG C of reservoir temperature, GDN4N8 well crude oil, lonely 5-linked injects water
(salinity 7075mg/L, calcium and magnesium 187mg/L).The monoethanolamine compounding 4000mg/L complexed surfactants of configuration 0.1% are molten
The HJ super high molecular weight polymer HJ three-component compound systems of liquid, 1500mg/L, are surveyed under Gudao oilfield B19 reservoir conditions
Profit to measure interfacial tension be 4.4 × 10-3MN/m, viscosity is 31.8mPas.
Permeability extreme difference is used for 1：5 heterogeneous quartz sand filling tubular model carries out comprehensive after physical simulation experiment, water drive
Aqueous 95% note 1500mg/L conventional polymer solution 0.3PV are closed, then turn water drive has to metaideophone is above-mentioned after comprehensive water cut 95%
Machine alkali ternary composite displacement system 0.3PV, then turn water drive to the end experiment of comprehensive water cut 98%, Gudao oilfield B19 polymer floodings
Oil displacement system improves recovery ratio 15.3% under reservoir condition after reservoir polymer drives afterwards.
Embodiment 3
For the oil reservoir of embodiment 1, permeability extreme difference is used for 1：3 heterogeneous quartz sand filling tubular model (model
Diameter 2.5cm, long 30cm) physical simulation experiment is carried out, carry out 0.15% polymer flooding first, postpolymer flood, which is integrated, to be contained
Water 94%, then using following operating procedure：
(1) intrinsic viscosity 3677mL/g super high molecular weight polymer is added in oil field injection sewage and concentration is made is
2000mg/L polymer solution, it is standby；
(2) by surfactant and amine organic base be added separately to oil field injection sewage in be made concentration for 4000mg/L,
Interfacial tension is less than 5.0 × 10-3MN/m surfactant solution and concentration is 2000mg/L amine organic alkali solution,
It is standby；
(3) surfactant solution is pressed：Amine organic alkali solution：Polymer solution=2:1:1 weight ratio, to step (1)
Surfactant solution and organic alkali solution made from step (2) are separately added into obtained polymer solution, mixture is uniform
Ternary composite driving is obtained, it is standby；
(4) polymer solution made from step (1) is regard as preposed attributives using the injection rate of 0.05 times of formation pore volume
Inject in water injection well；
(5) ternary composite driving made from step (3) is continued with the injection rate of 0.4 times of formation pore volume to inject water filling
In well；
(6) polymer solution made from step (1) is regard as protection section using the injection rate of 0.05 times of formation pore volume
In the last injection water injection well of plug.
Surfactant is anionic surfactant, nonionic surface active agent or cloudy non-both sexes table in step (2)
The compound system of face activating agent；Anionic surfactant is alkylbenzenesulfonate, alkylbenzene carboxylates or mahogany acid
Salt；Nonionic surface active agent is alkanolamide or alkyl alcohol ethoxylates.
Aforesaid operations terminate, and turn water drive and terminate to test to comprehensive water cut more than 98%, organic under the area's reservoir condition of Gudong field seven
Alkali ternary composite oil-displacing system is in Improving Oil Recovery after Polymer Flood 17.0%.
Embodiment 4
For the oil reservoir of embodiment 1, permeability extreme difference is used for 1：3 heterogeneous quartz sand filling tubular model (model
Diameter 2.5cm, long 30cm) physical simulation experiment is carried out, carry out 0.15% polymer flooding first, postpolymer flood, which is integrated, to be contained
Water 94%, then using following operating procedure：
(1) intrinsic viscosity 3677mL/g super high molecular weight polymers HJ is added in oil field injection sewage and concentration is made is
1500mg/L polymer solution, it is standby；
(2) by surfactant and amine organic base be added separately to oil field injection sewage in be made concentration for 3000mg/L,
Interfacial tension is less than 5.0 × 10-3MN/m surfactant solution and concentration is 1500mg/L amine organic alkali solution,
It is standby；
(3) surfactant solution is pressed：Amine organic alkali solution：Polymer solution=2:1:1 weight ratio, to step (1)
Surfactant solution and organic alkali solution made from step (2) are separately added into obtained polymer solution, mixture is uniform
Ternary composite driving is obtained, it is standby；
(4) polymer solution made from step (1) is regard as preposed attributives using the injection rate of 0.1 times of formation pore volume
Inject in water injection well；
(5) ternary composite driving made from step (3) is continued with the injection rate of 0.35 times of formation pore volume to inject water filling
In well；
(6) polymer solution made from step (1) is regard as protection section using the injection rate of 0.05 times of formation pore volume
In the last injection water injection well of plug.
Surfactant is anionic surfactant, nonionic surface active agent or cloudy non-both sexes table in step (2)
The compound system of face activating agent；Anionic surfactant is alkylbenzenesulfonate, alkylbenzene carboxylates or mahogany acid
Salt；Nonionic surface active agent is alkanolamide or alkyl alcohol ethoxylates.
Aforesaid operations terminate, and turn water drive and terminate to test to comprehensive water cut more than 98%, organic under the area's reservoir condition of Gudong field seven
Alkali ternary composite oil-displacing system is in Improving Oil Recovery after Polymer Flood 16.6%.
Embodiment 5
For the oil reservoir of embodiment 1, permeability extreme difference is used for 1：3 heterogeneous quartz sand filling tubular model (model
Diameter 2.5cm, long 30cm) physical simulation experiment is carried out, carry out 0.15% polymer flooding first, postpolymer flood, which is integrated, to be contained
Water 94%, then using following operating procedure：
(1) intrinsic viscosity 3677mL/g super high molecular weight polymers HJ is added in oil field injection sewage and concentration is made is
2500mg/L polymer solution, it is standby；
(2) by surfactant and amine organic base be added separately to oil field injection sewage in be made concentration for 5000mg/L,
Interfacial tension is less than 5.0 × 10-3MN/m surfactant solution and concentration is 3000mg/L amine organic alkali solution,
It is standby；
(3) surfactant solution is pressed：Amine organic alkali solution：Polymer solution=2:1:1 weight ratio, to step (1)
Surfactant solution and amine organic alkali solution, mixture made from step (2) are separately added into obtained polymer solution
Uniform ternary composite driving, it is standby；
(4) polymer solution made from step (1) is regard as preposed attributives using the injection rate of 0.08 times of formation pore volume
Inject in water injection well；
(5) ternary composite driving made from step (3) is continued with the injection rate of 0.3 times of formation pore volume to inject water filling
In well；
(6) polymer solution made from step (1) is regard as protection slug using the injection rate of 0.1 times of formation pore volume
Finally in injection water injection well.
Surfactant is anionic surfactant, nonionic surface active agent or cloudy non-both sexes table in step (2)
The compound system of face activating agent；Anionic surfactant is alkylbenzenesulfonate, alkylbenzene carboxylates or mahogany acid
Salt；Nonionic surface active agent is alkanolamide or alkyl alcohol ethoxylates.
Aforesaid operations terminate, and turn water drive and terminate to test to comprehensive water cut more than 98%, organic under the area's reservoir condition of Gudong field seven
Alkali ternary composite oil-displacing system is in Improving Oil Recovery after Polymer Flood 16.8%.
Embodiment 6
For the oil reservoir of embodiment 1, permeability extreme difference is used for 1：3 heterogeneous quartz sand filling tubular model (model
Diameter 2.5cm, long 30cm) physical simulation experiment is carried out, carry out 0.15% polymer flooding first, postpolymer flood, which is integrated, to be contained
Water 94%, then using following operating procedure：
(1) intrinsic viscosity 3677mL/g super high molecular weight polymers HJ is added in oil field injection sewage and concentration is made is
600mg/L polymer solution, it is standby；
(2) by surfactant and amine organic base be added separately to oil field injection sewage in be made concentration for 4000mg/L,
Interfacial tension is less than 5.0 × 10-3MN/m surfactant solution and concentration is 4000mg/L amine organic alkali solution,
It is standby；
(3) surfactant solution is pressed：Amine organic alkali solution：Polymer solution=2:1:1 weight ratio, to step (1)
Surfactant solution and amine organic alkali solution, mixture made from step (2) are separately added into obtained polymer solution
Uniform ternary composite driving, it is standby；
(4) polymer solution made from step (1) is regard as preposed attributives using the injection rate of 0.06 times of formation pore volume
Inject in water injection well；
(5) ternary composite driving made from step (3) is continued with the injection rate of 0.5 times of formation pore volume to inject water filling
In well；
(6) polymer solution made from step (1) is regard as protection section using the injection rate of 0.08 times of formation pore volume
In the last injection water injection well of plug.
Surfactant is anionic surfactant, nonionic surface active agent or cloudy non-both sexes table in step (2)
The compound system of face activating agent；Anionic surfactant is alkylbenzenesulfonate, alkylbenzene carboxylates or mahogany acid
Salt；Nonionic surface active agent is alkanolamide or alkyl alcohol ethoxylates.
Aforesaid operations terminate, and turn water drive and terminate to test to comprehensive water cut more than 98%, organic under the area's reservoir condition of Gudong field seven
Alkali ternary composite oil-displacing system is in Improving Oil Recovery after Polymer Flood 16.5%.
Embodiment 7
For the oil reservoir of embodiment 2, using following operating procedure：
Permeability extreme difference is used for 1：5 heterogeneous quartz sand filling tubular model carries out comprehensive after physical simulation experiment, water drive
Aqueous 95% is closed, 1500mg/L conventional polymer solution 0.3PV is noted, then turns water drive to comprehensive water cut 95%, then using such as
Lower operating procedure：
(1) intrinsic viscosity 3677mL/g super high molecular weight polymers HJ is added in oil field injection sewage and concentration is made is
1500mg/L polymer solution, it is standby；
(2) by surfactant and amine organic base be added separately to oil field injection sewage in be made concentration for 3000mg/L,
Interfacial tension is less than 5.0 × 10-3MN/m surfactant solution and concentration is 1000mg/L amine organic alkali solution,
It is standby；
(3) surfactant solution is pressed：Amine organic alkali solution：Polymer solution=2:1:1 weight ratio, to step (1)
Surfactant solution and organic alkali solution made from step (2) are separately added into obtained polymer solution, mixture is uniform
Obtain ternary composite driving；
(4) ternary composite driving made from step (3) is injected in water injection well with the injection rate of 0.4 times of formation pore volume.
Surfactant is anionic surfactant, nonionic surface active agent or cloudy non-both sexes table in step (2)
The compound system of face activating agent；Anionic surfactant is alkylbenzenesulfonate, alkylbenzene carboxylates or mahogany acid
Salt；Nonionic surface active agent is alkanolamide or alkyl alcohol ethoxylates.
Aforesaid operations terminate, then turn water drive to the end experiment of comprehensive water cut 98%, and Gudao oilfield B19 postpolymerflooded reservoirs gather
Oil displacement system improves recovery ratio 15.3% under reservoir condition after compound drives.
Embodiment 8
For the oil reservoir of embodiment 2, using following operating procedure：
Permeability extreme difference is used for 1：5 heterogeneous quartz sand filling tubular model carries out comprehensive after physical simulation experiment, water drive
Close aqueous 95%, note 1500mg/L conventional polymer solution 0.3PV, then turn water drive to after comprehensive water cut 95%, then use
Following operating procedure：
(1) intrinsic viscosity 3677mL/g super high molecular weight polymers HJ is added in oil field injection sewage and concentration is made is
2500mg/L polymer solution, it is standby；
(2) by surfactant and amine organic base be added separately to oil field injection sewage in be made concentration for 5000mg/L,
Interfacial tension is less than 5.0 × 10-3MN/m surfactant solution and concentration is 5000mg/L amine organic alkali solution,
It is standby；
(3) surfactant solution is pressed：Organic alkali solution：Polymer solution=2:1:1 weight ratio, to step (1)
Surfactant solution and amine organic alkali solution, mixture made from step (2) are separately added into obtained polymer solution
It is uniform to obtain ternary composite driving；
(4) ternary composite driving made from step (3) is injected in water injection well with the injection rate of 0.3 times of formation pore volume.
Surfactant is anionic surfactant, nonionic surface active agent or cloudy non-both sexes table in step (2)
The compound system of face activating agent；Anionic surfactant is alkylbenzenesulfonate, alkylbenzene carboxylates or mahogany acid
Salt；Nonionic surface active agent is alkanolamide or alkyl alcohol ethoxylates.
Aforesaid operations terminate, then turn water drive to the end experiment of comprehensive water cut 98%, and Gudao oilfield B19 postpolymerflooded reservoirs gather
Oil displacement system improves recovery ratio 15.8% under reservoir condition after compound drives.
Embodiment 9
For the oil reservoir of embodiment 2, using following operating procedure：
Permeability extreme difference is used for 1：5 heterogeneous quartz sand filling tubular model carries out comprehensive after physical simulation experiment, water drive
Close aqueous 95%, note 1500mg/L conventional polymer solution 0.3PV, then turn water drive to after comprehensive water cut 95%, then use
Following operating procedure：
(1) intrinsic viscosity 3677mL/g super high molecular weight polymers HJ is added in oil field injection sewage and concentration is made is
2000mg/L polymer solution, it is standby；
(2) surfactant and organic base are added separately to that concentration is made for 4000mg/L, interface in oil field injection sewage
Tension force is less than 5.0 × 10-3MN/m surfactant solution and concentration is 4000mg/L organic alkali solution, standby；
(3) surfactant solution is pressed：Organic alkali solution：Polymer solution=2:1:1 weight ratio, to step (1)
Polymer solution in be separately added into surfactant solution and organic alkali solution made from step (2), mixture it is uniform three
First combination flooding；
(4) ternary composite driving of step (3) is injected in water injection well with the injection rate of 0.5 times of formation pore volume.
Surfactant is anionic surfactant, nonionic surface active agent or cloudy non-both sexes table in step (2)
The compound system of face activating agent；Anionic surfactant is alkylbenzenesulfonate, alkylbenzene carboxylates or mahogany acid
Salt；Nonionic surface active agent is alkanolamide or alkyl alcohol ethoxylates.
Aforesaid operations terminate, then turn water drive to the end experiment of comprehensive water cut 98%, and Gudao oilfield B19 postpolymerflooded reservoirs gather
Oil displacement system improves recovery ratio 15.7% under reservoir condition after compound drives.
Embodiment 10
For the oil reservoir of embodiment 1, permeability extreme difference is used for 1：3 heterogeneous quartz sand filling tubular model (model
Diameter 2.5cm, long 30cm) physical simulation experiment is carried out, carry out 0.15% polymer flooding first, postpolymer flood, which is integrated, to be contained
Water 94%, then using following operating procedure：
(1) by intrinsic viscosity 3677mL/g super high molecular weight polymers HJ be added to oil field injection sewage in be respectively prepared it is dense
The polymer solution for 2000mg/L and 500mg/L is spent, it is standby；
(2) by surfactant and amine organic base be added separately to oil field injection sewage in be made concentration for 4000mg/L,
Interfacial tension is less than 5.0 × 10-3MN/m surfactant solution and concentration is 4000mg/L amine organic alkali solution,
It is standby；
(3) surfactant solution is pressed：Amine organic alkali solution：Polymer solution=2:1:1 weight ratio, the weight such as takes
The step of two kinds of concentration made from (1) polymer solution, be separately added into surfactant solution made from step (2)
With amine organic alkali solution, mixture it is uniform ternary composite driving, it is standby；
(4) 2000mg/L polymer solutions made from step (1) are made with the injection rate of 0.06 times of formation pore volume
For in preposed attributives injection water injection well；
(5) ternary composite driving made from step (3) is continued with the injection rate of 0.5 times of formation pore volume to inject water filling
In well；
(6) 500mg/L polymer solutions made from step (1) are made with the injection rate of 0.08 times of formation pore volume
Finally injected for protection slug in water injection well.
Surfactant is anionic surfactant, nonionic surface active agent or cloudy non-both sexes table in step (2)
The compound system of face activating agent；Anionic surfactant is alkylbenzenesulfonate, alkylbenzene carboxylates or mahogany acid
Salt；Nonionic surface active agent is alkanolamide or alkyl alcohol ethoxylates.
Aforesaid operations terminate, and turn water drive and terminate to test to comprehensive water cut more than 98%, organic under the area's reservoir condition of Gudong field seven
Alkali ternary composite oil-displacing system is in Improving Oil Recovery after Polymer Flood 16.8%.
Embodiment 11
For the oil reservoir of embodiment 2, using following operating procedure：
Permeability extreme difference is used for 1：5 heterogeneous quartz sand filling tubular model carries out comprehensive after physical simulation experiment, water drive
Aqueous 95% is closed, 1500mg/L conventional polymer solution 0.3PV is noted, then turns water drive to comprehensive water cut 95%, then using such as
Lower operating procedure：
(1) by intrinsic viscosity 3677mL/g super high molecular weight polymers HJ be added to oil field injection sewage in be respectively prepared it is dense
The polymer solution for 2500mg/L and 800mg/L is spent, it is standby；
(2) by surfactant and amine organic base be added separately to oil field injection sewage in be made concentration for 3000mg/L,
Interfacial tension is less than 5.0 × 10-3MN/m surfactant solution and concentration is 1000mg/L amine organic alkali solution,
It is standby；
(3) surfactant solution is pressed：Amine organic alkali solution：Polymer solution=2:1:1 weight ratio, the weight such as takes
The step of two kinds of concentration made from (1) polymer solution, be separately added into surfactant solution made from step (2)
And organic alkali solution, mixture is uniform to obtain ternary composite driving；
(4) by 2500mg/L polymer solutions made from step (1) using the injection rate of 0.1 times of formation pore volume as
In preposed attributives injection water injection well；
(5) ternary composite driving made from step (3) is continued with the injection rate of 0.3 times of formation pore volume to inject water filling
In well；
(6) by 800mg/L polymer solutions made from step (1) using the injection rate of 0.05 times of formation pore volume as
Protection slug is finally injected in water injection well；
Surfactant is anionic surfactant, nonionic surface active agent or cloudy non-both sexes table in step (2)
The compound system of face activating agent；Anionic surfactant is alkylbenzenesulfonate, alkylbenzene carboxylates or mahogany acid
Salt；Nonionic surface active agent is alkanolamide or alkyl alcohol ethoxylates.
Aforesaid operations terminate, then turn water drive to the end experiment of comprehensive water cut 98%, and Gudao oilfield B19 postpolymerflooded reservoirs gather
Oil displacement system improves recovery ratio 15.9% under reservoir condition after compound drives.
Claims (5)
1. a kind of method that oil recovery factor is improved based on organic base ternary composite driving, it is characterised in that including following operating procedure：
(1) by super high molecular weight polymer be added to oil field injection sewage in be made concentration be 500-2500mg/L polymer it is molten
Liquid, it is standby；
(2) surfactant and organic base are added separately to that the table that concentration is 3000-5000mg/L is made in oil field injection sewage
Face activator solution and the organic alkali solution that concentration is 1000-3000mg/L, it is standby；
(3) surfactant solution is pressed：Organic alkali solution：Polymer solution=2:1:1 weight ratio, is made to step (1)
Polymer solution in be separately added into surfactant solution and organic alkali solution made from step (2), mixture it is uniform three
First combination flooding, it is standby；
(4) polymer solution made from step (1) is regard as preposition section using the injection rate of 0.05~0.1 times of formation pore volume
In plug injection water injection well；
(5) ternary composite driving made from step (3) is continued with the injection rate of 0.3-0.5 times of formation pore volume to inject water filling
In well；
(6) by step (1) be made polymer solution using the injection rate of 0.05-0.1 times of formation pore volume as protection slug most
Afterwards in injection water injection well；
Wherein, the super high molecular weight polymer refers to that intrinsic viscosity is more than 3500mL/g water-soluble portion hydrolyzed polyacrylamide；
The surfactant is anionic surfactant, nonionic surface active agent or cloudy non-amphoteric surfactant
Compound system；
The organic base is amine organic base.
2. a kind of method that oil recovery factor is improved based on organic base ternary composite driving according to claim 1, its feature is existed
In the anionic surfactant is alkylbenzenesulfonate, alkylbenzene carboxylates or petroleum sulfonate；It is described it is non-from
Subtype surfactant is alkanolamide or alkyl alcohol ethoxylates.
3. it is according to claim 1 a kind of based on organic base ternary composite driving raising crude oil
The method of recovery ratio, it is characterised in that the concentration of step (4) described polymer solution is 2000-2500mg/L.
4. it is according to claim 1 a kind of based on organic base ternary composite driving raising crude oil
The method of recovery ratio, it is characterised in that the concentration of step (6) described polymer solution is 500-800mg/L.
5. a kind of method that oil recovery factor is improved based on organic base ternary composite driving according to claim 1, its feature is existed
In the oil field injection sewage is the mixing water of Huanghe water, oil field recharged waste water or Huanghe water and oil field recharged waste water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610191049.9A CN107288596A (en) | 2016-03-30 | 2016-03-30 | A kind of method that oil recovery factor is improved based on organic base ternary composite driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610191049.9A CN107288596A (en) | 2016-03-30 | 2016-03-30 | A kind of method that oil recovery factor is improved based on organic base ternary composite driving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107288596A true CN107288596A (en) | 2017-10-24 |
Family
ID=60087575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610191049.9A Pending CN107288596A (en) | 2016-03-30 | 2016-03-30 | A kind of method that oil recovery factor is improved based on organic base ternary composite driving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107288596A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570316A (en) * | 2018-05-30 | 2018-09-25 | 山东大学 | Polyetheramine replaces the ASP ternary composite driving finishes and preparation method thereof of inorganic base |
| CN110374559A (en) * | 2018-04-10 | 2019-10-25 | 陈光凌 | The method and device that different displacement modes influence low medium-high permeable reservoir oil displacement efficiency |
| CN111636848A (en) * | 2020-06-02 | 2020-09-08 | 中国石油化工股份有限公司 | Method for improving oil reservoir recovery ratio after polymer flooding |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110303A (en) * | 1994-04-14 | 1995-10-18 | 胜利石油管理局地质科学研究院 | Ternary compound chemical agent oil removing method |
| CN1272587A (en) * | 1999-04-30 | 2000-11-08 | 大庆石油管理局 | Three-component composite displacement system formed from alkali, active agent and polymer and its application in tertiary oil recovery |
| CN1420255A (en) * | 2001-11-16 | 2003-05-28 | 大庆油田有限责任公司 | Method for increasing petroleum recovery ratio using three-compoonent composite displacement emulsification |
| US20070125987A1 (en) * | 2003-06-25 | 2007-06-07 | Emma Hills | Tagged scale inhibiting polymers, compositions comprised thereof and preventing or controlling scale formation therewith |
| CN102242625A (en) * | 2011-04-25 | 2011-11-16 | 中国石油化工股份有限公司 | Method for improving recovery ratio of crude oil of oil deposit after polymer flooding |
| CN104109522A (en) * | 2014-03-27 | 2014-10-22 | 中国石油化工股份有限公司 | Ternary composite oil displacement system used for high temperature oil reservoirs |
| CN104818970A (en) * | 2015-03-17 | 2015-08-05 | 中国石油大学(北京) | Method for reducing component loss and formation damage in high-temperature combined chemical flooding process |
| CN105089587A (en) * | 2014-05-15 | 2015-11-25 | 中国石油化工股份有限公司 | Method for improving crude oil recovery ratio in underground oil reservoir in later period of oil field oil recovery |
-
2016
- 2016-03-30 CN CN201610191049.9A patent/CN107288596A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110303A (en) * | 1994-04-14 | 1995-10-18 | 胜利石油管理局地质科学研究院 | Ternary compound chemical agent oil removing method |
| CN1272587A (en) * | 1999-04-30 | 2000-11-08 | 大庆石油管理局 | Three-component composite displacement system formed from alkali, active agent and polymer and its application in tertiary oil recovery |
| CN1420255A (en) * | 2001-11-16 | 2003-05-28 | 大庆油田有限责任公司 | Method for increasing petroleum recovery ratio using three-compoonent composite displacement emulsification |
| US20070125987A1 (en) * | 2003-06-25 | 2007-06-07 | Emma Hills | Tagged scale inhibiting polymers, compositions comprised thereof and preventing or controlling scale formation therewith |
| CN102242625A (en) * | 2011-04-25 | 2011-11-16 | 中国石油化工股份有限公司 | Method for improving recovery ratio of crude oil of oil deposit after polymer flooding |
| CN104109522A (en) * | 2014-03-27 | 2014-10-22 | 中国石油化工股份有限公司 | Ternary composite oil displacement system used for high temperature oil reservoirs |
| CN105089587A (en) * | 2014-05-15 | 2015-11-25 | 中国石油化工股份有限公司 | Method for improving crude oil recovery ratio in underground oil reservoir in later period of oil field oil recovery |
| CN104818970A (en) * | 2015-03-17 | 2015-08-05 | 中国石油大学(北京) | Method for reducing component loss and formation damage in high-temperature combined chemical flooding process |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374559A (en) * | 2018-04-10 | 2019-10-25 | 陈光凌 | The method and device that different displacement modes influence low medium-high permeable reservoir oil displacement efficiency |
| CN108570316A (en) * | 2018-05-30 | 2018-09-25 | 山东大学 | Polyetheramine replaces the ASP ternary composite driving finishes and preparation method thereof of inorganic base |
| CN111636848A (en) * | 2020-06-02 | 2020-09-08 | 中国石油化工股份有限公司 | Method for improving oil reservoir recovery ratio after polymer flooding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100591742C (en) | Method of raising oil deposit crude petroleum recovery ratio | |
| CA2562248C (en) | Composition and process for enhanced oil recovery | |
| US8776880B2 (en) | Process for enhanced oil recovery using the ASP technique | |
| US4031958A (en) | Plugging of water-producing zones in a subterranean formation | |
| CN101839123B (en) | Exploitation method for wax precipitation oil reservoir | |
| CN101735789B (en) | Foam compound oil displacement agent and preparation method thereof | |
| CN105602540B (en) | A kind of compact oil reservoir under-injected well administering method | |
| CN103180405A (en) | Water injection systems and methods | |
| CN103937475B (en) | Carbon dioxide acidification blocking remover and process of not reversely discharging raffinate after acidification | |
| WO1999051854A1 (en) | A foam drive method | |
| CN104594859B (en) | A kind of method of the fine and close oily oil reservoir of nano-fluid exploitation | |
| CN101839127A (en) | Exploitation method of thick oil type oil deposit | |
| CN103666425A (en) | Blocking remover and blocking removal method for corrosion sulfate compound scale | |
| CN103642478B (en) | A kind of unblocking agent for removing polymer contaminants | |
| CN110552671B (en) | CO auxiliary by dimethyl ether 2 Method for realizing high-efficiency development of heavy oil reservoir by flooding | |
| WO2008029131A1 (en) | Hydrocarbon recovery | |
| CN109899044A (en) | A kind of method that transfer drive washes alternately injection raising oil recovery factor | |
| CN103834379B (en) | A kind of vermiculate glues foam system and the method improving recovery ratio with it | |
| CN102153998A (en) | Composite flooding system containing lipopeptide biological surfactant and application thereof | |
| CN103421481A (en) | Glycine betaine surfactant composition system and purpose thereof | |
| CN104109519A (en) | Betaine-polymer oil displacement composition and preparation method thereof | |
| CN107288596A (en) | A kind of method that oil recovery factor is improved based on organic base ternary composite driving | |
| CN103410486A (en) | Three-in-one composite profile control and displacement process used for oilfield deep profile control | |
| CN106433592A (en) | Organic base composite oil displacement system suitable for high-calcium oil reservoirs, and preparation method thereof | |
| CN101979825A (en) | Process technology for complex blockage removal of chlorine dioxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171024 |