CN102286274A - Cross-linked polymer microsphere-polymer composite in-depth profile control and oil displacement agent and use method thereof - Google Patents
Cross-linked polymer microsphere-polymer composite in-depth profile control and oil displacement agent and use method thereof Download PDFInfo
- Publication number
- CN102286274A CN102286274A CN2011101398050A CN201110139805A CN102286274A CN 102286274 A CN102286274 A CN 102286274A CN 2011101398050 A CN2011101398050 A CN 2011101398050A CN 201110139805 A CN201110139805 A CN 201110139805A CN 102286274 A CN102286274 A CN 102286274A
- Authority
- CN
- China
- Prior art keywords
- cross
- water
- adjusting driving
- linked polymer
- formula
- 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
Abstract
The invention provides a cross-linked polymer microsphere-polymer composite in-depth profile control and oil displacement agent and a use method thereof. The profile control and oil displacement agent comprises the following ingredients in percent by mass: 0.01 percent-0.3 percent of water-soluble cross-linked polymer microsphere, 0.05 percent-0.5 percent of water-soluble polymer and the balance of water. In the cross-linked polymer microsphere-polymer composite in-depth profile control and oil displacement agent provided by the invention, compared with that of the conventional polymer flooding, the capability of changing the direction of liquid flow is higher, the one-way breakthrough of polymer solution in the application process can be delayed, the sweep efficiency of polymer flooding is improved, the capability of improving the oil-water phase mobility ratio can be higher than that of the conventional cross-linked polymer solution, the displacement capability of the cross-linked polymer solution is improved, and the invention is more applicable to water injection development oil reservoirs with non-uniform porous mediums.
Description
Technical field
The present invention relates to a kind of cross-linked polymer microsphere-polymkeric substance compound deep adjusting driving agnet and the using method thereof that can improve the oil reservoir nonuniformity, improve the waterflooding reservoir oil recovery factor, belong to the petroleum industry field.
Background technology
At present, the early development oil field progressively enters the water flood recovery intermediary and later stages, how further to improve volumetric conformance efficiency and ripples and the interior efficiency of displacement of volume of injecting water, economical, the existing oil field of exploitation is one of key subjects of needing to be resolved hurrily of petroleum industrial circle effectively, important effect has been brought into play in the development of wherein intensified oil reduction technology and application.
Along with going deep into of research, the nonuniformity of oil reservoir causes concern in the industry day by day to the influence of water drive, chemical flooding displacing fluid sweep efficiency, people recognize to have only by the deep transfer drive, could be more economically, adjust, improve the nonuniformity of oil reservoir effectively, thereby improve the volumetric conformance efficiency that injects liquid, guarantee the realization of the high efficiency of displacement of chemical flooding, improve the oil recovery factor in water flood recovery stage.
The existing method that improves the volumetric conformance efficiency that injects liquid mainly comprises: (1) is purpose to improve displacing fluid viscosity, and the polymer flooding, the cross-linked polymer flow-gel that improve crude oil/displacing fluid mobility ratio drive; (2) adopt linked polymer coil shutoff reservoir pore to shout, realize to inject cross-linked polymer solution (LPS), the cross-linked polymer microsphere deep profile controlling technology of the changed course of liquid stream.
But, along with going deep into of research and carrying out repeatedly of test in place, that uses at present drives as purpose polymers to improve displacing fluid viscosity, the contradiction that cross-linked polymer flows between weak gelling system and the field conduct condition also progressively exposes, as: for strong nonuniformity oil reservoir, though the rheological property of the displacing fluid that injects can produce certain macroscopical liquid stream changed course ability, but with respect to well profile modification, transfer drives etc. are oozed the technology of duct shutoff based on height, its liquid stream changed course ability relatively a little less than, easily break through too early by formed advantage passage generation displacing fluid in most permeable zone and the long-term injecting water process, not only the impact polymer efficiency of displacement of driving brings a series of problems also for follow-up oil-water separation system.
Adopt linked polymer coil shutoff reservoir pore to shout, realize that cross-linked polymer solution (LPS), the technical development of cross-linked polymer microsphere deep profile controlling of the changed course of injection liquid stream are rapid in the recent period, for example ZL 00135877.4, ZL 021 16422.3 disclose and have adopted linear partially hydrolyzed polyacrylamide (HPAM) dilute solution (massfraction at it below critical overlapping massfraction) and linking agent reaction, form the aqueous dispersion (that is cross-linked polymer solution) of linked polymer coil; ZL 200710063645.X, ZL 200410006334.6 disclose the water-dispersion phase that adopts conversed phase micro emulsion copolymerization, inverse emulsion polymerization technology to form nanometer or micro-meter scale, in water-dispersion mutually, comprise cross-linking monomer at interior multiple monomeric copolymerization, form the micro polymer micelle, these micelles swelling, dissolving back in water form the linked polymer coil of different scale.Shout the linked polymer coil that the size selection is complementary with it according to the target reservoir hole, a ball of string is detained and the shutoff venturi in hole effectively, cause deep liquid stream changed course, the nonuniformity of oil reservoir is adjusted and is improved in real realization, improves the recovery ratio of waterflooding crude oil.
Summary of the invention
The purpose of this invention is to provide a kind of cross-linked polymer microsphere-polymkeric substance compound deep adjusting driving agnet and using method thereof.Can adjust type, shape and the particle diameter of linked polymer coil according to the character of the actual conditions of oil reservoir, the used polymkeric substance of polymer flooding, make the application of the compound deep of described cross-linked polymer microsphere-polymkeric substance adjusting driving agnet help more improving that the oil reservoir permeability contrast is big, the recovery ratio of waterflooding intermediary and later stages crude oil.
The compound deep of a kind of cross-linked polymer microsphere-polymkeric substance provided by the invention adjusting driving agnet comprises cross linked water soluble polymer microballoon, water-soluble polymers and water; In the adjusting driving agnet of described compound deep, the quality percentage composition of described cross linked water soluble polymer microballoon is 0.01%～0.3%, and the quality percentage composition of described water-soluble polymers is 0.01%～0.5%, and surplus is a water.
In the above-mentioned compound deep adjusting driving agnet, the quality percentage composition of described cross linked water soluble polymer microballoon specifically can be 0.03%, and the quality percentage composition of described water-soluble polymers is 0.0145%.
In the above-mentioned compound deep adjusting driving agnet, the particle diameter of described cross linked water soluble polymer microballoon can be 100nm-5000nm.
In the above-mentioned compound deep adjusting driving agnet, described cross linked water soluble polymer microballoon will screen according to target reservoir character, can screen according to following principle: the molecular structure of (1) described cross linked water soluble polymer microballoon should possess enough chemical stabilities in reservoir fluid under the reservoir temperature; (2) described cross linked water soluble polymer microballoon should have enough physical strengths and deformability, can recover original shape after shouting by reservoir pore; (3) size of described cross linked water soluble polymer microballoon should be shouted coupling with formation pore, can under certain flow differential pressure a plurality of microballoons be assembled at the hole place of shouting, and implements the shutoff to shouting; (4) described cross linked water soluble polymer microballoon can inject water by ionic linkage goods hydrophobic association effect formation organic complex with described water-soluble polymers.
In the above-mentioned compound deep adjusting driving agnet, described cross linked water soluble polymer microballoon can prepare according to the method that may further comprise the steps: under inert atmosphere, polymerization single polymerization monomer carries out polyreaction and obtains described cross-linked polymer microsphere in the aqueous dispersions that is dissolved with macromolecule dispersing agent, inorganic salt and cross-linking monomer; The quality percentage composition of macromolecule dispersing agent, inorganic salt and cross-linking monomer described in the described aqueous dispersions can be 1.0%～10.0%, 10.0%～40.0% and 0.001%～3.0% respectively; The quality percentage composition that described polymerization single polymerization monomer accounts for described aqueous dispersions can be 10.0%～40.0%; Described polymerization single polymerization monomer can be the monomer molecule that only contains single pair of key and water soluble group in the molecular structure; Comprise non-ionic monomer, for example: acrylamide, Methacrylamide, N-vinyl formamide, N-vinyl acetamide, N-vinyl pyrrolidone, N,N-DMAA, vinyl cyanide, diacetone acrylamide, (methyl) 2-hydroxyethyl acrylate acrylamide, vinylcarbinol etc.; Anionic monomer, for example: monomeric corresponding salt such as (methyl) vinylformic acid, itaconicacid, toxilic acid, 2-acrylamide-2-methyl propane sulfonic acid, vinyl sulfonic acid; Cationic monomer, for example: (methyl) acrylyl oxy-ethyl-trimethyl salmiac, (methyl) acrylyl oxy-ethyl diethylmethyl ammonium chloride, (methyl) acrylyl oxy-ethyl dimethyl benzyl ammonium chloride, (methyl) acrylyl oxy-ethyl diethyl benzyl ammonium chloride, dimethyl diallyl ammonium chloride etc.; Described inorganic salt can be in ammonium sulfate, sodium sulfate, vitriolate of tartar, ammonium chloride, Repone K and the sodium-chlor etc. at least a; Described cross-linking monomer can be the polyfunctional monomer that contains two or more pairs key in the molecular structure, and distance can be regulated by regulating the length that connects two key groups between two keys.For example: the bifunctional monomer can be N, N '-methylene-bisacrylamide, polyethyleneglycol diacrylate, polyoxyethylene glycol diallyl ether, N, N-diallyl dimethyl chlorination amine, N, N '-diallyl-N, N, N ', the own dichloride ammonium of N '-tetramethyl-, N, N '-two couple vinyl benzyl-N, N, N ', the own dichloride amine of N '-tetramethyl-etc.; The trifunctional monomer can be three vinylformic acid-(propyl group) trimethyl, pentaerythritol triallyl ether etc.; Described macromolecule dispersing agent can be selected commercially available macromolecule dispersing agent, for example adopt commercially available: relative molecular mass is the homopolymer of the polyvinyl alcohol of 4000-20000, polyvinylamine that relative molecular mass is 5000-30000, vinyl pyrrolidone or multipolymer etc., wherein adopts the homopolymer of vinyl pyrrolidone or multipolymer effect better; Or by the dilute solution polymerization of the described polymerization single polymerization monomer of ionic acquisition accordingly in the molecular structure of described cross-linked polymer microsphere, as comprising the negatively charged ion cross-linked polymer microsphere of acrylic amide-acrylic sodium-2-acrylamide-2-methyl propane sulfonic acid sodium structure in the synthetic molecules structure, described macromolecule dispersing agent can carry out dilute solution polymerization gained homopolymer by 2-acrylamide-2-methyl propane sulfonic acid sodium and serve as; Such as the cationic crosslinked polymer microballoon that comprises nitrile-acrylamide-acrylic acid acyl-oxygen ethyl-trimethyl salmiac structure in zwitter-ion cross-linked polymer microsphere that comprises nitrile-acrylamide-acrylic acid acyl-oxygen ethyl-trimethyl salmiac-2-acrylamide-2-methyl propane sulfonic acid sodium structure in the synthetic molecules structure or the molecular structure, described macromolecule dispersing agent can carry out dilute solution polymerization gained homopolymer by acrylyl oxy-ethyl-trimethyl salmiac and serve as again.
In the above-mentioned compound deep adjusting driving agnet, described cross linked water soluble polymer microballoon can be in the cross-linked polymer microsphere of polymkeric substance shown in formula (I), formula (II), formula (III) and the formula (IV) any; Described water-soluble polymers be shown in formula (I), formula (II), formula (III) and the formula (IV) in the polymkeric substance any;
In the formula (I), R
1And R
2All represent C1-C3 alkyl, C1-C3 alkoxyl group or benzyl; R
3Represent hydrogen, benzyl, C1-C3 alkyl, C10-C22 alkyl or C10-C22 alkoxyl group; R
4Represent hydrogen or methyl; A represention oxygen atom or NH; B represents C2-C4 alkylidene group or C2-C4 alkylene oxide group; X
1Represent negatively charged ion; In the formula (II), R
5Represent hydrogen, methyl or carboxymethyl; R
6Represent hydrogen or carboxymethyl; F represents SO
3, C
6H
4SO
3, CONHC (CH
3)
2CH
2SO
3Or COO; Y1 represents hydrogen or positively charged ion; In the formula (III), R
7Represent hydrogen, C10-C22 alkyl or the single C6-C22 of replacement alkyl phenyl; D represents polyoxyethylene groups or polyoxypropylene base; E represents methylene radical or single substituted benzyl; In the formula (IV), R
8Represent hydrogen, hydroxypropyl or C10-C22 alkyl.
In the above-mentioned compound deep adjusting driving agnet, described water-soluble polymers can be polyacrylamide, partially hydrolyzed polyacrylamide, hydrophobic association type acrylamide polymer, ionic association type acrylamide polymer or polyvinylamine.
In the above-mentioned compound deep adjusting driving agnet, described cross linked water soluble polymer microballoon can be cross-linked polyacrylamide microballoon, crosslink part hydro-polyacrylamide microballoon, crosslinked hydrophobic association type acrylamide polymer microballoon, cross-linking ion association type acrylamide polymer microballoon or crosslinked polyethylene amine microballoon.
In the above-mentioned compound deep adjusting driving agnet, the sticking all relative molecular weight of described water-soluble polymers is 1,250 ten thousand-1,600 ten thousand.
The present invention also provides the using method of above-mentioned compound deep adjusting driving agnet, comprises the steps: described compound deep adjusting driving agnet is added to inject water and carry out the displacement of reservoir oil by injecting the inside that well is injected into target reservoir.
The compound degree of depth adjusting driving agnet of cross-linked polymer microsphere-polymkeric substance provided by the invention has than conventional polymer and drives high liquid stream changed course ability, can delay the unidirectional breakthrough of polymers soln in application process, improve the sweep efficiency of polymer flooding, having again can the high ability of improving profit phase mobility ratio of more conventional cross-linked polymer solution, improve cross-linked polymer solution displacement ability, be applicable to waterflooding reservoir more with heterogeneous porous medium; It is bigger that the compound deep of cross-linked polymer microsphere-polymkeric substance provided by the invention adjusting driving agnet is particularly suitable for the oil reservoir permeability contrast, and waterflooding intermediary and later stages oil field is improved the oil recovery factor process and used.In a word, the compound deep of cross-linked polymer microsphere-polymkeric substance provided by the invention adjusting driving agnet forms the complex body aqueous solution by swelling in water, lysigenous linked polymer coil and polymer molecule.Form machinery delay, the shutoff venturi of complex body in oil reservoir by such linked polymer coil and polymer molecule, cause deep liquid stream changed course, complex body has the distinctive high viscosity character of polymers soln energy simultaneously, can improve crude oil/displacing fluid mobility ratio, the heterogeneous body of enough adjusting and improving oil reservoir influences polymer flooding, strengthens, improves and enlarge the range of application of polymer flooding.
Embodiment
Employed experimental technique is ordinary method if no special instructions among the following embodiment.
Used material, reagent etc. if no special instructions, all can obtain from commercial channels among the following embodiment.
In following embodiment of the present invention and the Comparative Examples employed experimental technique if no special instructions, equal methods of stipulating according to SY/T6576-2003 " being used for improving the recommended practice that the polymkeric substance of oil recovery is estimated " national standard.
Partially hydrolyzed polyacrylamide AP-P4 (sticking all relative molecular weight is 1,250 ten thousand-1,600 ten thousand) used in the following embodiment of the present invention and the Comparative Examples buys in Sichuan light Asia company of polymkeric substance chemical industry company limited.
Partially hydrolyzed polyacrylamide DQ-ZF (sticking all relative molecular weight is 1,250 ten thousand-1,600 ten thousand) used in the following embodiment of the present invention and the Comparative Examples buys in company of Daqing Refinery polymkeric substance chemical industry company limited.
Cross-linked polymer microsphere (zwitter-ion microballoon, particle diameter are 500nm-5000nm) used in following embodiment 1-3 of the present invention and the Comparative Examples 3 can prepare according to the method for putting down in writing among the Chinese patent ZL 200710063645.X, or is provided by Hubei Jinzhou Tianyi Fine Chemistry Industry Development Co., Ltd..
Cross-linked polymer microsphere (hydrophobic association microballoon, particle diameter are 100nm-1000nm) used in following embodiment 1-3 of the present invention and the Comparative Examples 4 can prepare according to the method for record among the Chinese patent ZL 200410006334.6, or is provided by Hubei Jinzhou Tianyi Fine Chemistry Industry Development Co., Ltd..
Used crude oil is that the SZ36-1 simulated oil (adopts dehydration back, SZ36-1 oil field crude oil to add the kerosene dilution, crude oil in the simulation SZ36-1 oil field stratum, μ in following embodiment of the present invention and the Comparative Examples displacement process
Oil=76.4mPas), obtain solution water and water drive water use the SZ36-1 Simulated Water, obtain after exporting sewage and a water supply well clear water mixes, filters by the field triphase separator by two parts of SZ36-1.
To the cross-linked polymer microsphere adjusting driving agnet of the polymkeric substance displacing agents of the compound deep of cross-linked polymer microsphere-polymkeric substance transfer drive, reference examples 1 and 2 preparations of embodiment 1-3 preparation and Comparative Examples 3 preparations to perm-plug method 0.5 μ m
2With 2.0 μ m
2, 2.0 μ m
2With 3.5 μ m
2Synthetic core in parallel carry out SZ36-1 simulated oil (μ
Oil=76.4mPas) displacement test, the compound deep of simulation cross-linked polymer microsphere-polymkeric substance adjusting driving agnet is estimated the shutoff transfer drive performance of the compound deep of cross-linked polymer microsphere-polymkeric substance adjusting driving agnet to the displacement process in reservoir formation duct.
Embodiment 1, the cross-linked polymer microsphere-compound deep of AP-P4 polymkeric substance adjusting driving agnet
At first in the SZ36-1 oil field Simulated Water of configuration, add calculated amount 0.5% according to patent ZL200710063645.X in the cross-linked polymer microsphere powder mother liquor of embodiment 1 preparation, making the cross-linked polymer microsphere massfraction in the system is 300mg/L, shakes up; The 0.5% sticking all relative molecular mass that adds calculated amount then is 1,250 ten thousand hydrophobic association type partially hydrolyzed polyacrylamide (AP-P4) mother liquors, making the HPAM massfraction in the system is 1450mg/L, mix the back cross-linked polymer microsphere-compound deep of AP-P4 polymkeric substance adjusting driving agnet that airtight placement obtained in 48 hours under 65 ℃, in this adjusting driving agnet, the quality percentage composition of cross-linked polymer microsphere is 0.03%, the quality percentage composition of AP-P4 is 0.0145%, surplus is a water, and rate of permeation is respectively 0.5 μ m
2With 2.0 μ m
2Synthetic core in parallel carry out the displacement test of SZ36-1 simulated oil, record cross-linked polymer microsphere under the experiment condition-compound deep of AP-P4 polymkeric substance adjusting driving agnet and can improve simulated oil recovery ratio 17.3%.
Embodiment 2, the cross-linked polymer microsphere-compound deep of AP-P4 polymkeric substance adjusting driving agnet
At first in the SZ36-1 oil field Simulated Water of configuration, add calculated amount 0.5% according to patent ZL200710063645.X in the cross-linked polymer microsphere powder mother liquor of embodiment 1 preparation, making the cross-linked polymer microsphere massfraction in the system is 300mg/L, shakes up; The 0.5% sticking all relative molecular mass that adds calculated amount then is 1,250 ten thousand hydrophobic association type partially hydrolyzed polyacrylamide (AP-P4) mother liquors, making the HPAM massfraction in the system is 1450mg/L, mix the back cross-linked polymer microsphere-compound deep of AP-P4 polymkeric substance adjusting driving agnet that airtight placement obtained in 48 hours under 65 ℃, in this adjusting driving agnet, the quality percentage composition of cross-linked polymer microsphere is 0.03%, the quality percentage composition of AP-P4 is 0.0145%, surplus is a water, and rate of permeation is respectively 2.0 μ m
2With 3.5 μ m
2Synthetic core in parallel carry out the displacement test of SZ36-1 simulated oil, record cross-linked polymer microsphere under the experiment condition-compound deep of AP-P4 polymkeric substance adjusting driving agnet and can improve simulated oil recovery ratio 29.3%.
Embodiment 3, the cross-linked polymer microsphere-compound deep of AP-P4 polymkeric substance adjusting driving agnet
At first in the SZ36-1 oil field Simulated Water of configuration, add calculated amount 0.5% according to patent ZL200710063645.X in the cross-linked polymer microsphere emulsion mother liquor of embodiment 1 preparation, making the cross-linked polymer microsphere massfraction in the system is 300mg/L, shakes up; The 0.5% sticking all relative molecular mass that adds calculated amount then is 1,250 ten thousand hydrophobic association type partially hydrolyzed polyacrylamide (AP-P4) mother liquors, making the HPAM massfraction in the system is 1450mg/L, mix the back cross-linked polymer microsphere-compound deep of AP-P4 polymkeric substance adjusting driving agnet that airtight placement obtained in 48 hours under 65 ℃, in this adjusting driving agnet, the quality percentage composition of cross-linked polymer microsphere is 0.03%, the quality percentage composition of AP-P4 is 0.0145%, and rate of permeation is respectively 2.0 μ m
2With 3.5 μ m
2Synthetic core in parallel carry out the displacement test of SZ36-1 simulated oil, record cross-linked polymer microsphere under the experiment condition-compound deep of AP-P4 polymkeric substance adjusting driving agnet and can improve simulated oil recovery ratio 26.3%.
Embodiment 4, the cross-linked polymer microsphere-compound deep of AP-P4 polymkeric substance adjusting driving agnet
At first in the SZ36-1 oil field Simulated Water of configuration, add calculated amount 0.5% according to patent ZL200410006334.6 in the cross-linked polymer microsphere emulsion mother liquor of embodiment 2 preparations, making the cross-linked polymer microsphere massfraction in the system is 300mg/L, shakes up; The 0.5% sticking all relative molecular mass that adds calculated amount then is 1,250 ten thousand hydrophobic association type partially hydrolyzed polyacrylamide (AP-P4) mother liquors, making the HPAM massfraction in the system is 1450mg/L, mix the back cross-linked polymer microsphere-compound deep of AP-P4 polymkeric substance adjusting driving agnet that airtight placement obtained in 48 hours under 65 ℃, in this adjusting driving agnet, the quality percentage composition of cross-linked polymer microsphere is 0.03%, the quality percentage composition of AP-P4 is 0.0145%, and rate of permeation is respectively 0.5 μ m
2With 2.0 μ m
2Synthetic core in parallel carry out the displacement test of SZ36-1 simulated oil, record cross-linked polymer microsphere under the experiment condition-compound deep of AP-P4 polymkeric substance adjusting driving agnet and can improve simulated oil recovery ratio 35.9%.
Reference examples 1, AP-P4 displacing agent
The 0.5% sticking all relative molecular mass that adds calculated amount in the SZ36-1 oil field Simulated Water of configuration is 1,250 ten thousand hydrophobic association type partially hydrolyzed polyacrylamide (AP-P4) mother liquors, making the HPAM massfraction in the system is 1750mg/L, shake up, the AP-P4 displacing agent that airtight placement obtained in 48 hours under 65 ℃ is respectively 0.5 μ m to rate of permeation
2With 2.0 μ m
2Synthetic core in parallel carry out the displacement test of SZ36-1 simulated oil, record that the AP-P4 displacing agent can improve simulated oil recovery ratio 15.1% under the experiment condition.
Reference examples 2, AP-P4 displacing agent
The 0.5% sticking all relative molecular mass that adds calculated amount in the SZ36-1 oil field Simulated Water of configuration is 1,250 ten thousand hydrophobic association type partially hydrolyzed polyacrylamide (AP-P4) mother liquors, making the HPAM massfraction in the system is 1750mg/L, shake up, the AP-P4 displacing agent that airtight placement obtained in 48 hours under 65 ℃ is respectively 2.0 μ m to rate of permeation
2With 3.5 μ m
2Synthetic core in parallel carry out the displacement test of SZ36-1 simulated oil, record that the AP-P4 displacing agent can improve simulated oil recovery ratio 24.0% under the experiment condition.
Reference examples 3, cross-linked polymer microsphere displacing agent
In the SZ36-1 oil field Simulated Water of configuration, add calculated amount 0.5% according to patent ZL 200710063645.X in the cross-linked polymer microsphere powder mother liquor of embodiment 1 preparation, making the cross-linked polymer microsphere massfraction in the system is 400mg/L, shake up, the cross-linked polymer microsphere displacing agent that airtight placement obtained in 48 hours under 65 ℃ is respectively 0.5 μ m to rate of permeation
2With 2.0 μ m
2Synthetic core in parallel carry out the displacement test of SZ36-1 simulated oil, record that the cross-linked polymer microsphere adjusting driving agnet can improve simulated oil recovery ratio 8.4% under the experiment condition.
Reference examples 4, DQ-ZF displacing agent
The 0.5% sticking all relative molecular mass that adds calculated amount in the SZ36-1 oil field Simulated Water of configuration is 1,600 ten thousand partially hydrolyzed polyacrylamide (DQ-ZF) mother liquors, making the HPAM massfraction in the system is 1750mg/L, shake up, the DQ-ZF displacing agent that airtight placement obtained in 48 hours under 65 ℃ is respectively 0.5 μ m to rate of permeation
2With 2.0 μ m
2Synthetic core in parallel carry out the displacement test of SZ36-1 simulated oil, record that the cross-linked polymer microsphere adjusting driving agnet can improve simulated oil recovery ratio 24.3% under the experiment condition.
Reference examples 5, cross-linked polymer microsphere displacing agent
In the SZ36-1 oil field Simulated Water of configuration, add calculated amount 0.5% according to patent ZL 200410006334.6 in the cross-linked polymer microsphere powder (MS of embodiment preparation
41) mother liquor, making the cross-linked polymer microsphere massfraction in the system is 400mg/L, shakes up, the cross-linked polymer microsphere displacing agent that airtight placement obtained in 48 hours under 65 ℃ is respectively 0.5 μ m to rate of permeation
2With 2.0 μ m
2Synthetic core in parallel carry out the displacement test of SZ36-1 simulated oil, record that the cross-linked polymer microsphere adjusting driving agnet can improve simulated oil recovery ratio 12.5% under the experiment condition.
Experiment condition and the result of each reference examples, embodiment comprehensively list in table 1～table 6.
Table 1, rock core oil displacement experiment synthetic core physical parameter in parallel
Table 2, rock core oil displacement experiment synthetic core displacement of reservoir oil result in parallel
Annotate: ES
82Secondary water drive 3Vp
Compare example 1, as a rule 3 with embodiment 1 as can be seen, cross-linked polymer microsphere-compound the deep of AP-P4 polymkeric substance adjusting driving agnet is compared with AP-P4 polymkeric substance displacing agent, cross-linked polymer microsphere adjusting driving agnet, can more effectively improve the displacement effect, improve rock core oil-recovering rate in parallel.
Table 3, rock core oil displacement experiment synthetic core physical parameter in parallel
Table 4, rock core oil displacement experiment synthetic core displacement of reservoir oil result in parallel
Compare example 2 and embodiment 2, embodiment 3 are as can be seen, cross-linked polymer microsphere-compound the deep of AP-P4 polymkeric substance adjusting driving agnet is compared with AP-P4 polymkeric substance displacing agent, it is higher that toner does not drive stage raising recovery ratio amplitude, and raising recovery ratio amplitude is also higher after changeing follow-up water drive.
Table 5, rock core oil displacement experiment synthetic core physical parameter in parallel
Table 6, rock core oil displacement experiment synthetic core displacement of reservoir oil result in parallel
Compare example 4, reference examples 5 and embodiment 4 are as can be seen, cross-linked polymer microsphere-compound the deep of DQ-ZF polymkeric substance adjusting driving agnet is compared with DQ-ZF polymkeric substance displacing agent, cross-linked polymer Nano microsphere adjusting driving agnet, can more effectively improve the displacement effect, improve rock core oil-recovering rate in parallel.
And, different oil reservoir at different geologic conditions, the compound deep of cross-linked polymer microsphere-polymkeric substance adjusting driving agnet oil-displacement capacity can, not repeat them here to obtain better result of use by various combination by type, screening micro polymer ball type and the size that changes polymkeric substance.
The effect that above embodiment and comparative result have only pointed out preparation method of the present invention to reach, that is, the compound deep of different cross-linked polymer microsphere-polymkeric substance adjusting driving agnet can carry out adaptive producing according to oil reservoir feature, recovery percent of reserves.
On the other hand, compare example and embodiment are as can be seen, identical at massfraction, salinity is identical, temperature is identical, the compound deep of the cross-linked polymer microsphere-polymkeric substance adjusting driving agnet that obtains under the identical condition of preparation time, when the rock core to perm-plug method like combinations carries out oil displacement experiment, the compound deep of the cross-linked polymer microsphere-polymkeric substance adjusting driving agnet that adopts present method to obtain can improve the recovery ratio of simulated oil preferably, illustrate that the compound deep of the cross-linked polymer microsphere-polymkeric substance adjusting driving agnet that adopts present method to obtain has and employing polymkeric substance displacing agent for heterogeneous porous medium, or the cross-linked polymer microsphere adjusting driving agnet is identical, or more superior oil-displacement capacity.
Explanation is at last: above embodiment is only in order to illustrate implementation process of the present invention and characteristics; and unrestricted technical scheme of the present invention; although the present invention is had been described in detail with reference to the foregoing description; those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention; and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of protection scope of the present invention.
Claims (7)
1. the compound deep of a cross-linked polymer microsphere-polymkeric substance adjusting driving agnet comprises cross linked water soluble polymer microballoon, water-soluble polymers and water; In the adjusting driving agnet of described compound deep, the quality percentage composition of described cross linked water soluble polymer microballoon is 0.01%～0.3%, and the quality percentage composition of described water-soluble polymers is 0.01%～0.5%, and surplus is a water.
2. compound deep according to claim 1 adjusting driving agnet is characterized in that: the particle diameter of described cross linked water soluble polymer microballoon is 100nm-5000nm.
3. compound deep according to claim 1 and 2 adjusting driving agnet is characterized in that: described cross linked water soluble polymer microballoon be in the cross-linked polymer microsphere of polymkeric substance shown in formula (I), formula (II), formula (III) and the formula (IV) any; Described water-soluble polymers be shown in formula (I), formula (II), formula (III) and the formula (IV) in the polymkeric substance any;
In the formula (I), R
1And R
2All represent C1-C3 alkyl, C1-C3 alkoxyl group or benzyl; R
3Represent hydrogen, benzyl, C1-C3 alkyl, C10-C22 alkyl or C10-C22 alkoxyl group; R
4Represent hydrogen or methyl; A represention oxygen atom or NH; B represents C2-C4 alkylidene group or C2-C4 alkylene oxide group; X
1Represent negatively charged ion; In the formula (II), R
5Represent hydrogen, methyl or carboxymethyl; R
6Represent hydrogen or carboxymethyl; F represents SO
3, C
6H
4SO
3, CONHC (CH
3)
2CH
2SO
3Or COO; Y1 represents hydrogen or positively charged ion; In the formula (III), R
7Represent hydrogen, C10-C22 alkyl or the single C6-C22 of replacement alkyl phenyl; D represents polyoxyethylene groups or polyoxypropylene base; E represents methylene radical or single substituted benzyl; In the formula (IV), R
8Represent hydrogen, hydroxypropyl or C10-C22 alkyl.
4. compound deep according to claim 3 adjusting driving agnet is characterized in that: described water-soluble polymers is polyacrylamide, partially hydrolyzed polyacrylamide, hydrophobic association type acrylamide polymer, ionic association type acrylamide polymer or polyvinylamine.
5. according to claim 3 or 4 described compound deep adjusting driving agnets, it is characterized in that: described cross linked water soluble polymer microballoon is cross-linked polyacrylamide microballoon, crosslink part hydro-polyacrylamide microballoon, crosslinked hydrophobic association type acrylamide polymer microballoon, cross-linking ion association type acrylamide polymer microballoon or crosslinked polyethylene amine microballoon.
6. according to arbitrary described compound deep adjusting driving agnet among the claim 1-5, it is characterized in that: the sticking all relative molecular weight of described water-soluble polymers is 1,250 ten thousand-1,600 ten thousand.
7. the using method of arbitrary described compound deep adjusting driving agnet among the claim 1-6 comprises the steps: described compound deep adjusting driving agnet is added to and injects water and carry out the displacement of reservoir oil by injecting the inside that well is injected into target reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101398050A CN102286274A (en) | 2011-05-27 | 2011-05-27 | Cross-linked polymer microsphere-polymer composite in-depth profile control and oil displacement agent and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101398050A CN102286274A (en) | 2011-05-27 | 2011-05-27 | Cross-linked polymer microsphere-polymer composite in-depth profile control and oil displacement agent and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102286274A true CN102286274A (en) | 2011-12-21 |
Family
ID=45333039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101398050A Pending CN102286274A (en) | 2011-05-27 | 2011-05-27 | Cross-linked polymer microsphere-polymer composite in-depth profile control and oil displacement agent and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102286274A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587876A (en) * | 2012-02-24 | 2012-07-18 | 中国石油天然气股份有限公司 | Method for improving recovery ratio of oil field by use of blasting type pre-crosslinking gel particles |
| CN103059828A (en) * | 2012-12-25 | 2013-04-24 | 北京希涛技术开发有限公司 | Thickening agent used for water base fracturing fluid and synthetic method thereof |
| CN103790560A (en) * | 2012-11-02 | 2014-05-14 | 西安交大京盛科技发展有限公司 | Fractured reservoir profile control process |
| CN104357039A (en) * | 2014-10-31 | 2015-02-18 | 中国石油化工股份有限公司 | Polymeric microsphere emulsion oil-displacing agent and preparation method thereof |
| CN104612639A (en) * | 2015-01-28 | 2015-05-13 | 西安石油大学 | Process of deep profile control over low-permeability oil reservoir |
| CN105586025A (en) * | 2014-10-24 | 2016-05-18 | 中国石油化工股份有限公司 | High-temperature high-salinity oil reservoir polymer microsphere dispersed system modifying and flooding agent, and preparation method and application thereof |
| CN105649587A (en) * | 2016-02-29 | 2016-06-08 | 烟台智本知识产权运营管理有限公司 | Method for conducting deep profile control over medium-high permeability oil reservoir |
| CN105693943A (en) * | 2016-03-23 | 2016-06-22 | 重庆科技学院 | Preparation method of pH value sensitive nucleocapsid microspheres |
| CN106467733A (en) * | 2015-08-18 | 2017-03-01 | 中国海洋石油总公司 | Cross linked amphoteric polymeric microsphere-hydrophobic associated polymer profile control agent and its application |
| CN106467598A (en) * | 2015-08-18 | 2017-03-01 | 中国海洋石油总公司 | A kind of cross linked amphoteric polymeric ball of string and preparation method thereof |
| CN106590558A (en) * | 2016-11-28 | 2017-04-26 | 中国石油大学(北京) | Temperature resisting cross-linking polymeric microsphere modifying and flooding agent and preparation method thereof |
| CN107605446A (en) * | 2017-08-18 | 2018-01-19 | 西南石油大学 | A kind of system compound method for being used to start low-permeability layer remaining oil in high permeability reservoir |
| CN109021159A (en) * | 2018-06-08 | 2018-12-18 | 中国石油天然气股份有限公司 | A kind of oilwell water shutoff agent and its preparation method and application |
| CN109184615A (en) * | 2018-08-15 | 2019-01-11 | 中国石油天然气股份有限公司 | A kind of sandy conglomerate bodies Selective Water Plugging method and application |
| CN110099982A (en) * | 2017-01-19 | 2019-08-06 | S.P.C.M.股份公司 | Method by injecting the aqueous polymeric composition intensified oil reduction containing microgel |
| CN110778297A (en) * | 2019-11-22 | 2020-02-11 | 中国海洋石油集团有限公司 | Method for improving recovery ratio by alternately injecting weak gel slug and multi-element composite slug |
| WO2020248310A1 (en) * | 2019-06-14 | 2020-12-17 | 西南石油大学 | Polymer monodisperse nano-microsphere for deep profile control, and preparation method for polymer monodisperse nano-microsphere |
| CN112708233A (en) * | 2019-10-25 | 2021-04-27 | 中国石油化工股份有限公司 | Polymer microsphere-polymer composite system and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240044A (en) * | 2007-02-07 | 2008-08-13 | 中国石油大学(北京) | Method for preparing cross-linking polymer clew with bimodal distribution grain diameter |
| CN101314712A (en) * | 2008-07-18 | 2008-12-03 | 中国石油大学(华东) | Microsphere oil displacement profile control agent, displacement of reservoir oil system and displacement of reservoir oil method |
-
2011
- 2011-05-27 CN CN2011101398050A patent/CN102286274A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240044A (en) * | 2007-02-07 | 2008-08-13 | 中国石油大学(北京) | Method for preparing cross-linking polymer clew with bimodal distribution grain diameter |
| CN101314712A (en) * | 2008-07-18 | 2008-12-03 | 中国石油大学(华东) | Microsphere oil displacement profile control agent, displacement of reservoir oil system and displacement of reservoir oil method |
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587876B (en) * | 2012-02-24 | 2014-11-05 | 中国石油天然气股份有限公司 | Method for improving recovery ratio of oil field by use of blasting type pre-crosslinking gel particles |
| CN102587876A (en) * | 2012-02-24 | 2012-07-18 | 中国石油天然气股份有限公司 | Method for improving recovery ratio of oil field by use of blasting type pre-crosslinking gel particles |
| CN103790560A (en) * | 2012-11-02 | 2014-05-14 | 西安交大京盛科技发展有限公司 | Fractured reservoir profile control process |
| CN103059828A (en) * | 2012-12-25 | 2013-04-24 | 北京希涛技术开发有限公司 | Thickening agent used for water base fracturing fluid and synthetic method thereof |
| CN103059828B (en) * | 2012-12-25 | 2015-10-14 | 北京希涛技术开发有限公司 | For viscosifying agent and the synthetic method thereof of aqueous fracturing fluid |
| CN105586025B (en) * | 2014-10-24 | 2020-01-03 | 中国石油化工股份有限公司 | High-temperature high-salinity reservoir polymer microsphere disperse system profile control and flooding agent and preparation method and application thereof |
| CN105586025A (en) * | 2014-10-24 | 2016-05-18 | 中国石油化工股份有限公司 | High-temperature high-salinity oil reservoir polymer microsphere dispersed system modifying and flooding agent, and preparation method and application thereof |
| CN104357039A (en) * | 2014-10-31 | 2015-02-18 | 中国石油化工股份有限公司 | Polymeric microsphere emulsion oil-displacing agent and preparation method thereof |
| CN104357039B (en) * | 2014-10-31 | 2018-09-18 | 中国石油化工股份有限公司 | A kind of polymer microballoon emulsion oil displacement agent and preparation method thereof |
| CN104612639A (en) * | 2015-01-28 | 2015-05-13 | 西安石油大学 | Process of deep profile control over low-permeability oil reservoir |
| CN104612639B (en) * | 2015-01-28 | 2017-01-18 | 西安石油大学 | Process of deep profile control over low-permeability oil reservoir |
| CN106467598A (en) * | 2015-08-18 | 2017-03-01 | 中国海洋石油总公司 | A kind of cross linked amphoteric polymeric ball of string and preparation method thereof |
| CN106467733B (en) * | 2015-08-18 | 2019-04-23 | 中国海洋石油集团有限公司 | Cross linked amphoteric polymeric microballoon-hydrophobic associated polymer profile control agent and its application |
| CN106467733A (en) * | 2015-08-18 | 2017-03-01 | 中国海洋石油总公司 | Cross linked amphoteric polymeric microsphere-hydrophobic associated polymer profile control agent and its application |
| CN105649587A (en) * | 2016-02-29 | 2016-06-08 | 烟台智本知识产权运营管理有限公司 | Method for conducting deep profile control over medium-high permeability oil reservoir |
| CN105693943A (en) * | 2016-03-23 | 2016-06-22 | 重庆科技学院 | Preparation method of pH value sensitive nucleocapsid microspheres |
| CN106590558B (en) * | 2016-11-28 | 2019-10-18 | 中国石油大学(北京) | A kind of heatproof cross-linked polymer microsphere profile control agent and preparation method thereof |
| CN106590558A (en) * | 2016-11-28 | 2017-04-26 | 中国石油大学(北京) | Temperature resisting cross-linking polymeric microsphere modifying and flooding agent and preparation method thereof |
| CN110099982A (en) * | 2017-01-19 | 2019-08-06 | S.P.C.M.股份公司 | Method by injecting the aqueous polymeric composition intensified oil reduction containing microgel |
| CN107605446B (en) * | 2017-08-18 | 2019-08-02 | 西南石油大学 | It is a kind of for starting the system preparation method of low-permeability layer remaining oil in high permeability reservoir |
| CN107605446A (en) * | 2017-08-18 | 2018-01-19 | 西南石油大学 | A kind of system compound method for being used to start low-permeability layer remaining oil in high permeability reservoir |
| CN109021159B (en) * | 2018-06-08 | 2020-03-10 | 中国石油天然气股份有限公司 | Oil well water shutoff agent and preparation method and application thereof |
| CN109021159A (en) * | 2018-06-08 | 2018-12-18 | 中国石油天然气股份有限公司 | A kind of oilwell water shutoff agent and its preparation method and application |
| CN109184615B (en) * | 2018-08-15 | 2021-03-30 | 中国石油天然气股份有限公司 | Selective water plugging method for oil well of conglomerate oil reservoir and application |
| CN109184615A (en) * | 2018-08-15 | 2019-01-11 | 中国石油天然气股份有限公司 | A kind of sandy conglomerate bodies Selective Water Plugging method and application |
| WO2020248310A1 (en) * | 2019-06-14 | 2020-12-17 | 西南石油大学 | Polymer monodisperse nano-microsphere for deep profile control, and preparation method for polymer monodisperse nano-microsphere |
| US11225597B2 (en) | 2019-06-14 | 2022-01-18 | Southwest Petroleum University | Polymer-monodispersed nano-microspheres for deep profile control and flooding, and preparation method thereof |
| CN112708233A (en) * | 2019-10-25 | 2021-04-27 | 中国石油化工股份有限公司 | Polymer microsphere-polymer composite system and preparation method thereof |
| CN112708233B (en) * | 2019-10-25 | 2023-04-07 | 中国石油化工股份有限公司 | Polymer microsphere-polymer composite system and preparation method thereof |
| CN110778297A (en) * | 2019-11-22 | 2020-02-11 | 中国海洋石油集团有限公司 | Method for improving recovery ratio by alternately injecting weak gel slug and multi-element composite slug |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102286274A (en) | Cross-linked polymer microsphere-polymer composite in-depth profile control and oil displacement agent and use method thereof | |
| CN102304200B (en) | Crosslinked polymer microspheres and preparation method thereof | |
| CN102304201B (en) | Hydrophobic association crosslinked polymer coil and preparation method thereof | |
| RU2505578C2 (en) | Composition and method for extraction of hydrocarbon fluids from underground deposit | |
| RU2502775C2 (en) | Block copolymers for extraction of hydrocarbon fluids from underground deposit | |
| US7888296B2 (en) | Composition and method for recovering hydrocarbon fluids from a subterranean reservoir | |
| CN101798503B (en) | Novel polymeric oil-displacing agent for improving recovery ratio and application thereof | |
| CN108484828A (en) | A kind of cation emulsion and preparation method thereof of water-in-water type nano-silica-containing core-shell particles | |
| CN101528888A (en) | Functional polymer for enhanced oil recovery | |
| CN103320112B (en) | A kind of anti-shearing dendritic polymers oil-displacing agent and synthetic method thereof | |
| CN103242818B (en) | AM (acrylamide)/NaAA (sodium acrylic acid)/AMPL (N-allyl morpholinium) ternary copolymer oil displacement agent and synthesis method thereof | |
| CN103555309A (en) | Water block damage treating agent based on biological surface active agent and preparation method thereof | |
| CN104140493B (en) | A kind of water-soluble ionic-type hydrophobic associated polymer oil displacement agent and its preparation method and application | |
| CN108192586B (en) | A kind of betaine type amphipathic polymer supermolecule oil displacement system and its construction method | |
| CN106467599A (en) | A kind of self-association type linked polymer coil and preparation method thereof | |
| US11718783B2 (en) | Method for preparing a composition comprising a hydrosoluble (co)polymer encapsulated in a shell and use of this composition in assisted oil and gas recovery | |
| CN105646774A (en) | Hydrophobic associated polymer and preparation method thereof | |
| CA3061408A1 (en) | Microparticles and method for modifying the permeability of a reservoir zone | |
| CA3142024A1 (en) | Polymers and nanoparticles for flooding | |
| CN106467598B (en) | A kind of cross linked amphoteric polymeric ball of string and preparation method thereof | |
| CN104861949A (en) | Micro-scale dynamic dispersion agent and preparation method thereof | |
| CN101240044B (en) | Method for preparing cross-linking polymer clew with bimodal distribution grain diameter | |
| CN106467733B (en) | Cross linked amphoteric polymeric microballoon-hydrophobic associated polymer profile control agent and its application | |
| El-Hoshoudy et al. | Application of acrylates in enhanced oil recovery | |
| CN104342101A (en) | AA/AM/NVP (Acrylic Acid/Acrylamide/N-Vinyl Pyrrolidone) copolymer water flooding direction change agent and synthesis method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111221 |