CN102676144A - Composition for penetration-driving oil recovery agent and penetration-driving oil recovery agent - Google Patents
Composition for penetration-driving oil recovery agent and penetration-driving oil recovery agent Download PDFInfo
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Abstract
The invention provides a composition for a penetration-driving oil recovery agent. The composition comprises the following components in percentage by weight: 0.5-45 percent of a main agent, 0.5-50 percent of an auxiliary agent and 5-99 percent of an inorganic alkali metal salt, wherein the main agent is polyacrylate, and comprises one or a combination of potassium polyacrylate, polyacrylate sodium, sodium polymethacrylate and ammonium polyacrylate; and the auxiliary agent is one or a combination of polyaspartic acid, polyaspartate and polyoxyethylene sorbitol anhydride mono-fatty acid ester. The invention further provides a penetration-driving oil recovery agent containing the composition for the penetration-driving oil recovery agent and a preparation method thereof and an application thereof in an oil recovery process. The penetration-driving oil recovery agent provided by the invention is prepared from simple and readily-available raw materials, has low using amount, and particularly has high recovery rate under a low penetration condition.
Description
Technical field
The present invention relates to a kind of driving and ooze type oil recovery agent with compsn and contain this and drive and ooze type oil recovery agent and ooze type oil recovery agent, belong to technical field of petroleum extraction with driving of compsn.
Background technology
Most of in the world at present oil fields have all got into the exploitation middle and later periods, after oil reservoir has experienced primary oil recovery and secondary oil recovery, still have the petroleum-in-place above 60% to remain in the blowhole of oil reservoir.At present, the TOR method is a lot, and tensio-active agent obtains people's generally attention in TOR, owing to use tensio-active agent can reduce the IT between profit, reduce the retention force of irreducible oil in the kapillary, thereby oil displacement efficiency is higher.Though the kind of tensio-active agent is very many,, consider the stratum adsorption losses again, so the tensio-active agent that really can be applied in the TOR is few because oil composition is complicated.
The surfactant oil displacement of developing both at home and abroad at present mainly is anionic sulphonate (sulfonated petro-leum, sulfonated alkylbenzene etc.) and carboxylate salt and nonionogenic tenside.Though sulfonated petro-leum is widely used, because the ratio of its effective constituent aromatics is very little, so working concentration is higher.Early stage tensio-active agent generally is lower than 5% in the RF of the LOW PERMEABILITY RESERVOIR imbibition displacement of reservoir oil, and oil recovery rate is slower, and the effect that makes imbibition recover the oil in field use is restricted.Special because the complicacy and the singularity of LOW PERMEABILITY RESERVOIR reservoir space physical properties; Determined the imbibition effect controlling LOW PERMEABILITY RESERVOIR water drive exploitation dynamically and development effectiveness, and the on-the-spot tensio-active agent that is adopted will determine the measure success or failure to the influence of imbibition oil displacement efficiency.
CN101955767A discloses a kind of Gemini surface active agent that is used for the TOR chemical oil displacement agent and preparation method thereof.Estimated the oil displacement efficiency of binary compound system with natural core through model test of the reservoir sweep through this Gemini surface active agent, rate of permeation is at 459-1563 μ m in air
2Scope in, belong to middle and high oil impregnate and hide, RF is between 18.7%-20.4%.
CN101445722A discloses a kind of surfactant for low-permeability oilfield oil-displacing agent that is suitable for, and wherein the weight percent of each component is: heavy alkylbenzene sulfonate or sulfonated are 38-70%, and anionic sulphonate Gmini type tensio-active agent is 5-8%; Nonionogenic tenside is 5-15%; Organic solvent is 2-5%, and water is 18-50%, and described anionic sulphonate Gmini type tensio-active agent is 5; 5 '-dinonyl-2; 2 '-(glycol ether oxygen base) two benzene sulfonates, 5,5 '-dinonyl-2,2 '-(Tri Ethyleneglycol oxygen base) two benzene sulfonates or 5; 5 '-dinonyl-2, a kind of or its any mixture in 2 '-(tetraethylene-glycol oxygen base) two benzene sulfonates; Nonionogenic tenside is that NP gathers one or more the mixture in oxyethylene ether, sorbitol polyoxyethylene ether, glycerol fatty acid ester and the sorbitan fatty acid ester; Organic solvent is one or more the mixture in Virahol, propyl carbinol, the isopropylcarbinol.This oil-displacing agent (80 ℃) under comparatively high temps can effectively reduce oil water interfacial tension and reach 10
-3MN/m can improve more than the about 20%OOIP of RF with the binary combination flooding system of polymer formation.
CN1865392A discloses a kind of highly efficiency compositional oil-displacing agent that is applied to TOR; This oil-displacing agent comprises the 50-70% sulfonated petro-leum by weight percentage, 15-25% nonionogenic tenside, 5-10% AS; 2-5% organic solvent, 0.1-3% sodium-chlor and 5-25% water.Said nonionogenic tenside is one or more the mixture in NP polyethylene oxide ether, sorbitol polyoxyethylene ether, glycerol fatty acid ester, the sorbitan fatty acid ester.Said AS is one or more the mixture in Sodium palmityl sulfate, sodium lauryl sulphate, X 2073, the StNa.Utilize this oil-displacing agent and polyacrylamide polymers to carry out binary combination flooding after the water drive and improve RF more than 20%, polyacrylamide polymers is driven the back binary combination flooding and is improved RF more than 10%.
Though a lot of tensio-active agents have been arranged as oil-displacing agent,, factor affecting such as venturi thin, specific surface area big, solid-liquid surface molecular power effect and crude oil border bed thickness little owing to the low-permeability oil deposit reservoir pore space, oil recovery factor is still lower.How to improve the RF in the LOW PERMEABILITY RESERVOIR, remain a technical problem that needs to be resolved hurrily.
Summary of the invention
For solving the problems of the technologies described above; The purpose of this invention is to provide a kind of functional, RF is higher drives and ooze type oil recovery agent with compsn and drive and ooze type oil recovery agent and preparation method thereof and the application in oil recovery process; Overcome the lower defective of oil recovery factor of prior art oil recovery factor lower defective, particularly LOW PERMEABILITY RESERVOIR.
For achieving the above object, the invention provides a kind of driving and ooze type oil recovery agent and use compsn, wherein; Said driving oozed type oil recovery agent and contained host, assistant agent, inorganic alkaline metal salt with compsn; Wherein, said host is polyacrylate, and it comprises one or more the combination in polyacrylic acid potassium, ZX-I, sodium polymethacrylate and the ammonium polyacrylate; Said assistant agent is one or more the combination in SAP 73, polyaspartic acid salts and the polyoxyethylenesorbitan sorbitan monooleate etc.; Wherein, ooze type oil recovery agent and use the total amount of compsn to be benchmark with said driving, the content of said host is 0.5-45 weight %; The content of said assistant agent is 0.5-50 weight %, and the content of said inorganic alkaline metal salt is 5-99 weight %.
Above-mentioned drive ooze type oil recovery agent with compsn in; Can realize the object of the invention according to above-mentioned each components contents provided by the invention, preferably, ooze type oil recovery agent and use the total amount of compsn to be benchmark with said driving; The content of said host is 1-40 weight %, more preferably 2-39 weight %.
Above-mentioned drive ooze type oil recovery agent with compsn in, preferably, ooze type oil recovery agent and use the total amount of compsn to be benchmark with said driving, the content of said assistant agent is 1-40 weight %, more preferably 2-37 weight %.
Above-mentioned drive ooze type oil recovery agent with compsn in, preferably, ooze type oil recovery agent and use the total amount of compsn to be benchmark with said driving, the content of said inorganic alkaline metal salt is 20-98 weight %, more preferably 24-96 weight %.
Above-mentioned drive ooze type oil recovery agent with compsn in, can realize the object of the invention preferably according to above-mentioned each components contents provided by the invention, preferably, the mass ratio of said host and said assistant agent is 0.1-10: 1,0.3-7 more preferably: 1.Through adopting this optimal technical scheme, can further improve said driving and ooze the effect of type oil recovery agent with compsn.
Above-mentioned drive ooze type oil recovery agent with compsn in, preferably, said polyacrylate is a ZX-I etc.
Above-mentioned drive ooze type oil recovery agent with compsn in, said ZX-I can all can be realized the object of the invention as the ZX-I of water conditioner for well known by persons skilled in the art, can directly use, and also can use with its solution form.Preferably, said ZX-I is the ZX-I that meets HG/T 2838-1997 chemical industry standard.For example solid content is>=30 weight %, and free monomer is (with CH
2=CH-COOH meter) content is 0.5-1 weight %, and the pH value is the ZX-I of 6-8.More preferably, adopting solid content is that the ZX-I of 30-50 weight % realizes that the effect of the object of the invention is better.In the present invention, the implication of solid content and pH value is identical in the solid content of ZX-I and pH value and the HG/T2838-1997 chemical industry standard.Need to prove that when various compositions among the present invention used with its solution form, its consumption was in wherein effective constituent.As when using the ZX-I of above-mentioned chemical industry standard, the consumption of ZX-I calculates with its solid content.
Above-mentioned drive ooze type oil recovery agent with compsn in, said polyaspartic acid salts can be one or more the combination in the various polyaspartic acid salts that can have a scale inhibition dissemination well known by persons skilled in the art, all can realize the object of the invention.Preferably, said polyaspartic acid salts comprises one or more the combination in poly (sodium aspartate), poly-aspartic potassium and the SAP 73 ammonium etc.
Above-mentioned drive ooze type oil recovery agent with compsn in, said assistant agent can be the combination of any one and polyoxyethylenesorbitan sorbitan monooleate in SAP 73 and/or the polyaspartic acid salts.Preferably, said assistant agent is the combination of poly (sodium aspartate) and polyoxyethylenesorbitan sorbitan monooleate, and the two can mix with arbitrary proportion, all can realize the object of the invention.Preferably, the mass ratio of said poly (sodium aspartate) and said polyoxyethylenesorbitan sorbitan monooleate is 0.1-3: 1, more preferably, be 0.5-2: 1.
Above-mentioned drive ooze type oil recovery agent with compsn in, said poly (sodium aspartate) can all can be realized the object of the invention as the poly (sodium aspartate) of water conditioner for well known by persons skilled in the art, can directly use, and also can use with its solution form.Preferably, said poly (sodium aspartate) is the poly (sodium aspartate) that meets HG/T 3822-2006 chemical industry standard, and for example solid content is >=30 weight %, and pH value (the 1 weight % aqueous solution) is the poly (sodium aspartate) of 8.5-10.5.More preferably, said poly (sodium aspartate) is that solid content is >=40 weight %, and pH value (the 1 weight % aqueous solution) is the poly (sodium aspartate) of 9-11.In the present invention, the implication of solid content and pH value is identical in the solid content of poly (sodium aspartate) and pH value and the HG/T 3822-2006 chemical industry standard.Need to prove that when using above-mentioned poly (sodium aspartate), the consumption of poly (sodium aspartate) calculates with its solid content.
Above-mentioned drive ooze type oil recovery agent with compsn in, said polyoxyethylenesorbitan sorbitan monooleate can all can be realized the object of the invention for the polyoxyethylenesorbitan sorbitan monooleate with emulsifying effect well known by persons skilled in the art.Preferably, adopt acid number to be≤2.0mgKOH/g, saponification value is 45-55mgKOH/g, and hydroxyl value is 65-80mg KOH/g, and ethenoxy group is that the polyoxyethylenesorbitan sorbitan monooleate of 65-69.5wt% realizes that the effect of the object of the invention is better.
Above-mentioned drive ooze type oil recovery agent with compsn in, the combination of one or more in the salt of the various alkali metals that said inorganic alkaline metal salt can be used always for those skilled in the art.For example sodium salt and/or sylvite etc.The present invention does not have special requirement to the kind of said inorganic alkaline metal salt yet, can be one or more the combination in nitrate salt, vitriol, phosphoric acid salt, hydrophosphate, carbonate, supercarbonate and the muriate etc.Preferably, said inorganic alkaline metal salt is a sodium salt, and more preferably, said inorganic alkaline metal salt is sodium hydrogencarbonate and sodium-chlor, and the two can mix with arbitrary proportion, all can realize the object of the invention.Preferably, the mass ratio of said sodium hydrogencarbonate and sodium-chlor is 1-3: 1 realizes that the effect of the object of the invention is better.
The present invention also provides a kind of driving to ooze type oil recovery agent, and this drives and oozes type oil recovery agent and contain water and above-mentioned and drive and ooze type oil recovery agent and use compsn.
Ooze in the type oil recovery agent in above-mentioned driving, saidly drive the content those skilled in the art of oozing water in the type oil recovery agent and can be decided according to the actual requirements.Preferably, said driving oozed type oil recovery agent to use the mass ratio of compsn and aqueous solvent be 1: 40-3000 more preferably is 1: 40-2500.
The present invention also provides a kind of preparation method of oozing type oil recovery agent that drives, and this method comprises oozes said driving type oil recovery agent and mix with host, assistant agent, inorganic alkaline metal salt and the water of compsn.Preferably, said driving oozed type oil recovery agent and mixed the back with compsn and water and use.Through adopting this optimal technical scheme, can further improve the result of use of oozing type oil recovery agent of driving according to the invention.Preferably, according to the invention driving oozed type oil recovery agent and can faced with before mixing with water with each component of compsn.Through adopting this optimal technical scheme, can make transportation and store more convenient.
Ooze among the preparation method of type oil recovery agent in above-mentioned driving; Said driving oozed type oil recovery agent and do not had special demands with the order by merging of each composition and water in the compsn; Can be directly with said drive ooze type oil recovery agent with each component of compsn carry out simultaneously with water, in batches or substep mix, as long as can obtain uniform mixture.Consumption those skilled in the art of water can be decided according to the actual requirements.Preferably, the total amount of host, assistant agent, inorganic alkaline metal salt and the mass ratio of water are 1: 40-3000 more preferably is 1: 40-2500.
Ooze among the preparation method of type oil recovery agent in above-mentioned driving, preferably, the said pH value of oozing type oil recovery agent of driving is 6-8.Through adopting this optimal technical scheme, can further improve said driving and ooze type oil recovery agent stability in use.Water as solvent can be clear water and/or oil field extracted water.In the present invention, said oil field extracted water can adopt the method for well known to a person skilled in the art (for example: the method for stipulating among the GB50428-2007) come oil field extracted water is handled before use.Preferably; Said aqueous solvent is the recovered water that drives the oil field of oozing type oil recovery agent provided by the invention to be used; Water resources can be saved on the one hand, the pressure that handle recovered water in the oil field can also be alleviated on the other hand, in addition; The ionic concn that has also kept Water table reduces the influence to the stratum.
The present invention also provides above-mentioned driving to ooze the application of type oil recovery agent in oil recovery process.This drives, and to ooze type oil recovery agent functional, raw material be simple and easy to and consumption few, apply it in the oil recovery process, can effectively improve the oil recovery factor of LOW PERMEABILITY RESERVOIR.
Contriver of the present invention finds through a large amount of experiments; Adopt polyacrylate as host; Add in addition to have the assistant agent of scale inhibition dissemination and/or to have driving that the assistant agent of emulsifying effect prepares and ooze type oil recovery agent, can in LOW PERMEABILITY RESERVOIR, obtain RF preferably.This possibly strengthen imbibition, de-oiling, washing oil function and expansion and involve function because said host and the associating of said assistant agent can be played a kind of synergy.Of the present invention drive ooze type oil recovery agent environmentally friendly, pollution-free, the stratum is not had injury; Raw material is simple and easy to, and under hypotonic condition, core simulated experiment imbibition RF can reach 34.47%.
Embodiment
Following specific embodiments of the invention is elaborated.Should be understood that embodiment described herein only is used for explanation and explains the present invention, is not limited to the present invention.
Illustrate in greater detail the present invention below in conjunction with embodiment.
In following examples and the Comparative Examples, said core is the natural exposure core;
ZX-I is produced by Huantai County, Shandong Province company of the imperial chemical industry of gold ltd, and the trade mark is PAAS, and wherein, solid content is 30-50 weight %, and free monomer is (with CH
2=CH-COOH meter) content is 0.5-1 weight %, and the pH value is 6-8;
Poly (sodium aspartate) is produced by Huantai County, the Shandong Province imperial chemical industry of gold ltd, and the trade mark is PASP, and wherein, solid content is >=40 weight %, and pH value (the 1 weight % aqueous solution) is 9-11;
Polyoxyethylenesorbitan sorbitan monooleate is grasped strange Chemical Industry Science Co., Ltd by Shanghai and is produced, and the trade mark is Tween 80, and acid number is≤2.0mgKOH/g, and saponification value is 45-55mgKOH/g, and hydroxyl value is 65-80mgKOH/g, and ethenoxy group is 65-69.5wt%;
Other reagent are all from being purchased.
Said RF is calculated according to formula:
Imbibition RF=(saturated oily total mass of entering in crude quality/core of deviating from) * 100%
Embodiment 1
(1) drives the preparation of oozing type oil recovery agent
With 0.1g ZX-I, 0.02gNaHCO
3With NaCl mixture (NaHCO
3: NaCl=1: 1 (mass ratio)), the 0.03g poly (sodium aspartate), 0.02g polyoxyethylenesorbitan sorbitan monooleate, and 99.83g clear water or grand celebration stratum Simulated Water mix obtains 100g and drives and ooze type oil recovery agent, and the said pH value of oozing type oil recovery agent of driving is 6.8.
(2) imbibition de-oiling experiment
That adopts step (1) preparation drives that viscosity is 10mPas when oozing type oil recovery agent and adopting 45 ℃, d=0.8294g/cm
3The core of the saturated mistake of Daqing crude oil carry out static imbibition de-oiling experiment; Concrete operations are referring to SY/T6424-2000 " composite oil-displacing system performance test methods " and a kind of normal pressure de-oiling bottle (for example: " a kind of self-priming appearance " that ZL201120075849.7 provides quotes in full here as a reference).The result is as shown in table 1.
Table 1
Embodiment 2
(1) drives the preparation of oozing type oil recovery agent
With 0.05g ZX-I, 0.5gNaHCO
3With NaCl mixture (NaHCO
3: 1 (mass ratio)) and the 0.05g poly (sodium aspartate) NaCl=2:, and 99.4g clear water or grand celebration stratum Simulated Water mix, and obtains 100g and drive and ooze type oil recovery agent, and the said pH value of oozing type oil recovery agent of driving is 7.4.
(2) imbibition de-oiling experiment
That adopts step (1) preparation drives that viscosity is 10mPas when oozing type oil recovery agent and adopting 45 ℃, d=0.8294g/cm
3The core of the saturated mistake of Daqing crude oil carry out static imbibition de-oiling experiment; Concrete operations are referring to SY/T6424-2000 " composite oil-displacing system performance test methods " and a kind of normal pressure de-oiling bottle (for example: " a kind of self-priming appearance " that ZL201120075849.7 provides quotes in full here as a reference).The result is as shown in table 2.
Table 2
Embodiment 3
(1) drives the preparation of oozing type oil recovery agent
With 0.05g ZX-I, 0.02gNaHCO
3With NaCl mixture (NaHCO
3: 1 (mass ratio)) and the 0.01g poly (sodium aspartate) NaCl=3:, and 99.92g clear water or stratum, huge port Simulated Water mix, and obtains 100g and drive and ooze type oil recovery agent, and the said pH value of oozing type oil recovery agent of driving is 6.8.
(2) imbibition de-oiling experiment
That adopts step (1) preparation drives that viscosity is 9.9mPas when oozing type oil recovery agent and adopting 53 ℃, d=0.8603g/cm
3The core crude oil of the saturated mistake in huge port carry out static imbibition de-oiling experiment; Concrete operations are referring to SY/T6424-2000 " composite oil-displacing system performance test methods " and a kind of normal pressure de-oiling bottle (for example: " a kind of self-priming appearance " that ZL201120075849.7 provides quotes in full here as a reference).The result is as shown in table 3.
Table 3
Embodiment 4
(1) drives the preparation of oozing type oil recovery agent
With 0.3g ZX-I, 2.0gNaHCO
3With NaCl mixture (NaHCO
3: 1 (mass ratio)) and the 0.1g polyoxyethylenesorbitan sorbitan monooleate NaCl=2:, and 97.68g clear water or stratum, huge port Simulated Water mix, and obtains 100g and drive and ooze type oil recovery agent, and the said pH value of oozing type oil recovery agent of driving is 7.2.
(2) imbibition de-oiling experiment
That adopts step (1) preparation drives that viscosity is 9.9mPas when oozing type oil recovery agent and adopting 53 ℃, d=0.8603g/cm
3The core crude oil of the saturated mistake in huge port carry out static imbibition de-oiling experiment; Concrete operations are referring to SY/T6424-2000 " composite oil-displacing system performance test methods " and a kind of normal pressure de-oiling bottle (for example: " a kind of self-priming appearance " that ZL201120075849.7 provides quotes in full here as a reference).The result is as shown in table 4.
Table 4
Embodiment 5
(1) drives the preparation of oozing type oil recovery agent
With 0.3g ZX-I, 2.0gNaHCO
3With NaCl mixture (NaHCO
3: 1 (mass ratio)) and the 0.02g polyoxyethylenesorbitan sorbitan monooleate NaCl=2:, and 97.68g clear water or stratum, huge port Simulated Water mix, and obtains 100g and drive and ooze type oil recovery agent, and the said pH value of oozing type oil recovery agent of driving is 7.0.
(2) imbibition de-oiling experiment
That adopts step (1) preparation drives that viscosity is 9.9mPas when oozing type oil recovery agent and adopting 53 ℃, d=0.8603g/cm
3The core crude oil of the saturated mistake in huge port carry out static imbibition de-oiling experiment; Concrete operations are referring to SY/T6424-2000 " composite oil-displacing system performance test methods " and a kind of normal pressure de-oiling bottle (for example: " a kind of self-priming appearance " that ZL201120075849.7 provides quotes in full here as a reference).The result is as shown in table 5.
Table 5
Embodiment 6
(1) drives the preparation of oozing type oil recovery agent
With 0.1g ZX-I, 0.02gNaHCO
3With NaCl mixture (NaHCO
3: NaCl=1: 1 (mass ratio)); 0.045g poly (sodium aspartate), the 0.005g polyoxyethylenesorbitan sorbitan monooleate, and 99.83g clear water or grand celebration stratum Simulated Water mix; Obtain 100g and drive and ooze type oil recovery agent, the said pH value of oozing type oil recovery agent of driving is 7.4.
(2) imbibition de-oiling experiment
That adopts step (1) preparation drives that viscosity is 9.9mPas when oozing type oil recovery agent and adopting 53 ℃, d=0.8603g/cm
3The core crude oil of the saturated mistake in huge port carry out static imbibition de-oiling experiment; Concrete operations are referring to SY/T6424-2000 " composite oil-displacing system performance test methods " and a kind of normal pressure de-oiling bottle (for example: " a kind of self-priming appearance " that ZL201120075849.7 provides quotes in full here as a reference).The result is as shown in table 6.
Table 6
Embodiment 7
(1) drives the preparation of oozing type oil recovery agent
Preparation is driven and is oozed type oil recovery agent according to the method for embodiment 6, and different is that pH value is 5.4 (pH value is regulated and adopted little acetic acid sodium and acetic acid, or sodium hydroxide and hydrochloric acid, stirs behind direct dropping liquid acid or the alkali during preparation to get final product).
(2) imbibition de-oiling experiment
Adopt the method that driving of step (1) preparation oozed type oil recovery agent and employing embodiment 6 to experimentize, the result is as shown in table 7.
Table 7
Comparative Examples 1
(1) drives the preparation of oozing type oil recovery agent
Method according to embodiment 5 prepares oil-displacing agent, and different is, does not add polyoxyethylenesorbitan sorbitan monooleate, adds 97.7g clear water or stratum, huge port Simulated Water among pure dose of the 100g.
(2) imbibition de-oiling experiment
Adopt the method that driving of step (1) preparation oozed type oil recovery agent and employing embodiment 5 to experimentize, the result is as shown in table 8.
Table 8
Comparative Examples 2
Adopt the method for embodiment 5 to experimentize, the oil-displacing agent that different is adopts the embodiment 1 that " is applied to highly efficiency compositional oil-displacing agent of TOR and preparation method thereof " according to CN1865392A to make replaces provided by the invention driving to ooze type oil recovery agent.The result is as shown in table 9.
Table 9
Can find out that from the result of table 1-9 adopt provided by the invention driving to ooze type oil recovery agent, under the situation of perm-plug method less than 100/mD, oil recovery factor is the highest can to reach 34.47%, compared with prior art, has significantly improved the LOW PERMEABILITY RESERVOIR RF; In addition, can find out that the weight ratio of said host and said assistant agent is 0.1-10:, can further improve the RF of oozing type oil recovery agent of driving of the present invention at 1 o'clock through embodiment 4 and 5; Also have, can find out through embodiment 1 and 6, the mass ratio of poly (sodium aspartate) and polyoxyethylenesorbitan sorbitan monooleate is at 0.1-3: in the time of in 1 the scope, can further improve the RF of oozing type oil recovery agent of driving of the present invention; Also have, can find out that through embodiment 6 and 7 the said pH that oozes type oil recovery agent that drives has higher RF in the 6-8 scope; In addition, through embodiment 5 is compared with Comparative Examples 1, do not add driving of assistant agent and ooze the RF of type oil recovery agent and be starkly lower than the RF of oozing type oil recovery agent of driving provided by the invention.Through embodiment 5 is compared with Comparative Examples 2, adopt the RF of oozing type oil recovery agent of driving of the present invention obviously to improve than the RF of oil-displacing agent of the prior art.
This shows that provided by the invention driving oozed the RF that type oil recovery agent has significantly improved LOW PERMEABILITY RESERVOIR.
Claims (12)
1. one kind is driven and oozes type oil recovery agent and use compsn, and by weight percentage, it contains: the host of 0.5-45 weight %, the assistant agent of 0.5-50 weight %, the inorganic alkaline metal salt of 5-99 weight %; Wherein, Said host is polyacrylate; It comprises one or more the combination in polyacrylic acid potassium, ZX-I, sodium polymethacrylate and the ammonium polyacrylate, and said assistant agent is one or more the combination in SAP 73, polyaspartic acid salts and the polyoxyethylenesorbitan sorbitan monooleate.
2. according to claim 1 driving oozed type oil recovery agent and used compsn; Wherein, drive with this and to ooze type oil recovery agent and use the total amount of compsn to be benchmark, the content of said host is 1-40 weight %; The content of said assistant agent is 1-40 weight %, and the content of said inorganic alkaline metal salt is 20-98 weight %.
3. according to claim 1 and 2 driving oozed type oil recovery agent and used compsn, and wherein, the mass ratio of said host and said assistant agent is 0.1-10: 1.
4. according to claim 1 and 2 driving oozed type oil recovery agent and used compsn, and wherein, said polyaspartic acid salts comprises one or more the combination in poly (sodium aspartate), poly-aspartic potassium and the SAP 73 ammonium.
5. according to claim 1 and 2 driving oozed type oil recovery agent and used compsn, and wherein, said assistant agent is poly (sodium aspartate) and polyoxyethylenesorbitan sorbitan monooleate.
6. according to claim 5 driving oozed type oil recovery agent and used compsn, and wherein, the mass ratio of said poly (sodium aspartate) and said polyoxyethylenesorbitan sorbitan monooleate is 0.1-3: 1; Preferably, said mass ratio is 0.5-2: 1.
7. according to claim 1 and 2 driving oozed type oil recovery agent and used compsn, and wherein, said inorganic alkaline metal salt is a sodium salt.
8. ooze type oil recovery agent and use compsn according to claim 1 or 7 described driving, wherein, said inorganic alkaline metal salt is sodium hydrogencarbonate and sodium-chlor, and the mass ratio of said sodium hydrogencarbonate and sodium-chlor is 1-3: 1.
9. one kind is driven and oozes type oil recovery agent, and this drives and oozes type oil recovery agent and contain among water and the claim 1-8 any described driving and ooze type oil recovery agent and use compsn.
10. according to claim 9 driving oozed type oil recovery agent, and wherein, said driving oozed type oil recovery agent to use the mass ratio of compsn and water be 1: 40-3000; Preferably, said mass ratio is 1: 40-2500.
11. claim 9 or the 10 described preparing methods of oozing type oil recovery agent that drive, this method comprise any described driving among the claim 1-8 is oozed the step that type oil recovery agent mixes with host, assistant agent, inorganic alkaline metal salt and the water of compsn.
12. claim 9 or 10 described driving are oozed the application of type oil recovery agent in oil recovery process.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103242817A (en) * | 2013-04-18 | 2013-08-14 | 中国石油天然气股份有限公司 | Emulsified penetration-driving oil recovery agent and preparation method thereof |
| CN104830304A (en) * | 2015-05-25 | 2015-08-12 | 唐山冀油瑞丰化工有限公司 | Emulsified displacement-permeation oil recovery agent and preparation method thereof |
| CN105860949A (en) * | 2016-04-11 | 2016-08-17 | 中国石油天然气股份有限公司 | Imbibition agent composition and preparation thereof |
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| CN102167451A (en) * | 2011-03-25 | 2011-08-31 | 上海美净环保材料有限公司 | Composite multiple dirt dispersion agent for oilfield flooding treatment and preparation method thereof |
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| CN102277149A (en) * | 2010-06-11 | 2011-12-14 | 中国石油天然气股份有限公司 | Surfactant oil displacement agent for low-permeability oil field |
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| US20110253599A1 (en) * | 2010-04-16 | 2011-10-20 | Kimberly Jantunen Cross | Processing aids to improve the bitumen recovery and froth quality in oil sands extraction processes |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103242817A (en) * | 2013-04-18 | 2013-08-14 | 中国石油天然气股份有限公司 | Emulsified penetration-driving oil recovery agent and preparation method thereof |
| CN103242817B (en) * | 2013-04-18 | 2015-02-25 | 中国石油天然气股份有限公司 | Emulsified penetration-driving oil recovery agent and preparation method thereof |
| CN104830304A (en) * | 2015-05-25 | 2015-08-12 | 唐山冀油瑞丰化工有限公司 | Emulsified displacement-permeation oil recovery agent and preparation method thereof |
| CN104830304B (en) * | 2015-05-25 | 2017-10-13 | 唐山冀油瑞丰化工有限公司 | A kind of emulsified penetration-driving oil recovery agent and preparation method thereof |
| CN105860949A (en) * | 2016-04-11 | 2016-08-17 | 中国石油天然气股份有限公司 | Imbibition agent composition and preparation thereof |
| CN105860949B (en) * | 2016-04-11 | 2018-07-13 | 中国石油天然气股份有限公司 | Imbibition agent composition and its preparation |
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| CN102676144B (en) | 2013-12-04 |
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