CN104277804A - AM-DAAM-AMPS ternary polymer gel particle drive-adjusting reagent and synthesis method thereof - Google Patents
AM-DAAM-AMPS ternary polymer gel particle drive-adjusting reagent and synthesis method thereof Download PDFInfo
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/58—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine
- C08F220/585—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine and containing other heteroatoms, e.g. 2-acrylamido-2-methylpropane sulfonic acid [AMPS]
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Abstract
The invention relates to an AM-DAAM-AMPS ternary polymer gel particle drive-adjusting reagent and a synthesis method thereof. According to the technical scheme, the polymer drive-adjusting reagent takes acrylamide (AM), diacetone-acrylamide (DAAM), 2-acrylamide-2-methyl-2-propene-1-sulfonic acid (AMPS) as monomers, and the optimal added amount for synthesis is as follows: concentration of the monomers is 20% (percent accounting for the total mass of reactants), and monomer ratio of AM to DAAM to AMPS is 7:1:2 (mass ratio); the added amount of a crosslinking agent is 0.07% (percent accounting for the total mass of the monomers); and the added amount of an initiating agent is 0.4% (percent accounting for the total mass of the monomers). The synthesis method of the AM-DAAM-AMPS ternary polymer gel particle drive-adjusting reagent comprises the following steps: weighing monomers AM, DAAM and AMPS according to the optimal added amounts, putting the monomers into a wide-mouth bottle, adding a certain amount of purified water to prepare a solution, titrating with a NaOH solution until pH value is 7, then adding an initiating agent and a crosslinking agent, and reacting in a water bath at the temperature of 50 DEG C for 3 hours; and finally washing with absolute ethyl alcohol, smashing, and drying, so that AM-DAAM-AMPS ternary polymer gel particles are obtained. The AM-DAAM-AMPS ternary polymer gel particles have good heat resistance, salt tolerance and plugging property and can be applied to oilfield flooding development as a drive-adjusting reagent.
Description
Technical field
The present invention relates to technical field of oilfield recovery percent improvement, particularly a kind of AM-DAAM-AMPS ter-polymers gel particle plugging agent and synthetic method thereof.
Background technology
Along with carrying out of tertiary oil recovery, add the understanding to thick oil pay, the research that the deep using chemical reagent to carry out oil reservoir processes is more and more deep, and the various in-situ gelling system wherein based on polyacrylamide are most widely used.But it self deficiency limits its widespread use, mainly Gelation Conditions is very severe, shutoff degree is more weak, can not be applied to the reason such as macropore and Fractured Reservoir, temperature tolerance and salt resistance difference causes the plastic situation of underground to become more complicated, even causes the cross-linking system of part at all cannot plastic; Meanwhile, the block present oil field needing carry out transfer drive very major part is all the water injection well that experienced by long water filling and define macropore, but in-situ gelling system gel-strength is lower, plastic situation comparatively complexity makes it be not easy to play good deep flow direction-changing.For heat and salt resistance and real demand, develop Weak gel particle plugging technology.
Pre-Cross Linked Grain Profile Control technology is the oil reservoir deep profile controlling technology that 20 century 70s grow up, this technology is that profile modification system is prepared into a series of gel particle on ground, particle has the swollen property of certain body in water, to be detained in hole after injecting formation particles water-swelling, the passage of blocking hole, make deep rock tunneling, play the effect of profile control and water plugging.
But existing Weak gel particle plugging agent is difficult to the deep profile controlling being applicable to high temperature and high salinity oil reservoir.Therefore from its heat and salt resistance of raising, in conventional polyacrylamide gel particle plugging agent, introduce the heat and salt resistance organic monomer with huge side base, thus make that the long-chain of molecule is curling becomes more difficult, improve the heat and salt resistance of plugging agent.Ensure that plugging agent under high temperature, high salinity condition, can still have good intensity, to realize the water plugging and profile controlling of particle at high temperature and high salinity oil reservoir.
Summary of the invention
The object of the invention is to: in order to make polymer gel have good heat and salt resistance, can realize water plugging and profile controlling preferably, spy provides a kind of new polymers plugging agent and synthetic method thereof.
In order to reach above object, the present invention is by the following technical solutions: a kind of AM-DAAM-AMPS polymer gel particles plugging agent, this polymkeric substance plugging agent is made up of acrylamide (AM), diacetone-acryloamide(DAA) (DAAM), 2-acrylamide-2-methylpro panesulfonic acid (AMPS), its synthesis optimum add amount is: monomer concentration 20% (accounting for total reactant quality per-cent), monomer ratio AM:DAAM:AMPS=7:1:2 (mass ratio); Linking agent dosage is 0.07% (accounting for monomer total mass per-cent); Initiator dosage is 0.4% (accounting for monomer total mass per-cent).
The synthetic method of this new polymers plugging agent: take 14g AM, 2g DAAM respectively, 4g AMPS puts into wide-necked bottle, getting a certain amount of pure water, to be made into monomer total mass percentage concentration be the aqueous solution of 20%.Being titrated to pH by NaOH solution is 7, and then add initiator ammonium persulfate solution and sodium sulfite solution (mol ratio is 1:1), initiator add-on is 0.4% of monomer total mass; Add linking agent MBA, linking agent add-on is 0.07% of monomer total mass.Wide-necked bottle is put into 50 DEG C of water-baths and react 3h, finally obtain AM-DAAM-AMPS ter-polymers gel particle with absolute ethanol washing, pulverizing, oven dry.
The invention has the beneficial effects as follows: in (1) polymkeric substance, introduce function monomer DAAM (diacetone-acryloamide(DAA)), AMPS (2-acrylamide-2-methylpro panesulfonic acid), DAAM, AMPS are the monomers all with huge side base, molecular rigidity can be strengthened and increase sterically hindered, make molecule curling become difficulty, thus increase heat and salt resistance; (2) this polymkeric substance plugging agent shows good heat and salt resistance, has good profile control and water plugging ability, can be used for Water in Water Shutoff in Oil Field profile control.
Accompanying drawing explanation
Fig. 1 is the infrared spectrogram of polymer gel particles;
Fig. 2 is the performance of particle aging 30d under differing temps;
Fig. 3 is the performance of particle aging 30d under different salinity.
Embodiment
Embodiment 1: the synthesis of binary polymerization gel particle AM-DAAM-AMPS
Take 14g AM, 2g DAAM respectively, 4g AMPS puts into wide-necked bottle, getting a certain amount of pure water, to be made into monomer total mass percentage concentration be the aqueous solution of 20%.Being titrated to pH by NaOH solution is 7, and then add initiator ammonium persulfate solution and sodium sulfite solution (mol ratio is 1:1), initiator add-on is 0.4% of monomer total mass; Add linking agent MBA, linking agent add-on is 0.07% of monomer total mass.Wide-necked bottle is put into 50 DEG C of water-baths and react 3h, finally obtain AM-DAAM-AMPS ter-polymers gel particle with absolute ethanol washing, pulverizing, oven dry.
Embodiment 2:AM-DAAM-AMPS binary polymerization gelifying agent grain pattern characterizes
By the infrared spectrum of ter-polymers AM-DAAM-AMPS that goes out synthesized by embodiment 1 as shown in Figure 1; From figure, the stretching vibration peak of C-S is positioned at 629cm
-1; Sulfonic charateristic avsorption band is positioned at 1041cm
-1, 1208cm
-1; Methyl absorption peak is positioned at 2925cm
-1, 1350cm
-1and 1425cm
-1, and at 1350cm
-1and 1425cm
-1there is bifurcated in place, can identify that namely the gem-dimethyl that there is two kinds of chemical environments different exists DAAM and AMPS; 1642cm
-1for the C=O absorption peak in AM; 1662cm
-1for the C=O absorption peak of DAAM; 3220cm
-1for the absorption peak of-NH, 3422cm
-1for-NH
2absorption peak.
Embodiment 3:AM-DAAM-AMPS binary polymerization gelifying agent particle temperature tolerance is investigated
By the gel particle synthesized by embodiment 1 at 40 DEG C, 50 DEG C, 60 DEG C, 70 DEG C, at 80 DEG C, its Water absorption and gel-strength is measured soak aging 30d in 8000mg/L local water after, as shown in Figure 2, this Weak gel particle at 80 DEG C in normal saline solution aging 30d Water absorption reach 40, gel-strength is 0.14MPa, and toughness is better, there is the good temperature tolerance (measuring method of intensity and toughness: by the amendment sample after water suction, after screen filtration, firmly to deform during extruding and not broken, unclamp rear resilient, show that this amendment has good toughness.The device of a set of evaluation gel-strength has been made in laboratory by oneself, pour test gels particle into intermediate receptacle, turn on pump also promotes piston and applies pressure to it, and it is 120 object steel-wire screens by 1 layer of order number that piston promotes gel particle, with maximum by pressure (P by during screen cloth of gel
max) characterize the intensity of pre-crosslinked gel particle, lower with).
Embodiment 4:AM-DAAM-AMPS binary polymerization gelifying agent particle salt resistance is investigated
By the gel particle synthesized by embodiment 1 at 80 DEG C, its Water absorption and gel-strength is measured after aging 30d under the salinity of 8000mg/L local water different multiples (0.5,1,5,10,12.5,18.75,25), as shown in Figure 3, this particle Water absorption under the salinity of 200000mg/L still reaches 28.4, gel-strength reaches 0.2MPa, and toughness is better, particle has good salt resistance.
Embodiment 5:AM-DAAM-AMPS polymeric gel agent particle seal-off effect is evaluated
Fill fill out sand tube (internal diameter 2.5cm, diameter 25cm) with the quartz sand of different meshes, when rate of water injection is 1.0ml/min, measures original permeability Kb, filter out several rate of permeation and be about 8 μm
2fill out sand tube, then inject gel particle solution (2000mg/L), close it and imports and exports and be placed in baking oven and be heated to 80 DEG C, carry out sequent water flooding with the waterflood injection rate of 1.0ml/min afterwards, measure stifled rear rate of permeation Ka.
The effects gel particle is 8 μm at original permeability
2during left and right, inject the shutoff situation under 0.3PV, 0.4PV, 0.5PV, 0.6PV, 0.7PV, the results are shown in Table 1.Result shows, along with the increase of gel particle injection rate, it is comparatively obvious that its sealing ratiod increases effect, and starting sealing ratiod increases soon, increases slower afterwards.Can know from experimental result, as long as inject the gel of 0.4PV, just can effectively change fill out sand tube rate of permeation, plugging effect is better.
Table 1 injects the fill out sand tube shutoff situation of different PV number
Embodiment 6:AM-DAAM-AMPS polymeric gel agent particle profile improvement rate is evaluated
The one dimension sand-packed model of low permeability and high permeability is filled and presented respectively with the quartz sand of different meshes, the rate of permeation of two sand-filling tube models is measured respectively with the rate of water injection of 1.0ml/min, filter out two (one group) fill out sand tube with certain permeability grade, repeat above-mentioned experiment, finishing screen selects three groups of sand-filling tube models that permeability grade is respectively 2,4.7,10.Two (one group) fill out sand tube are in parallel, measure stifled front fractional flow; Inject 0.4PV gel particle with the speed of 1.0ml/min again, put into baking oven for heating to 80 DEG C, then carry out sequent water flooding, measure the stifled rear fractional flow of each fill out sand tube, calculate its profile improvement rate.The profile improvement rate of 3 groups of different permeability grade fill out sand tube is as shown in table 2.Result shows, after injecting 0.4PV amendment, section improves respond well, and when permeability grade is respectively 2,4.7,10, profile improvement rate reaches 74.07%, 76.07%, 89.09% respectively.Show that permeability grade is larger, profile improvement rate is higher, and it is more remarkable that section improves effect simultaneously.
The section of the different differential fill out sand tube combination of table 2 improves situation
Claims (2)
1. an AM-DAAM-AMPS ter-polymers gel particle plugging agent and synthetic method thereof, it is characterized in that, this plugging agent is made up of acrylamide (AM), function monomer diacetone-acryloamide(DAA) (DAAM) and 2-acrylamide-2-methylpro panesulfonic acid (AMPS), its synthesis optimum add amount is: monomer concentration 20% (accounting for total reactant quality per-cent), monomer ratio AM:DAAM:AMPS=7:1:2 (mass ratio); Linking agent dosage is 0.07% (accounting for monomer total mass per-cent); Initiator dosage is 0.4% (accounting for monomer total mass per-cent).
2. a synthetic method for polymkeric substance plugging agent as claimed in claim 1, is characterized in that: take 14g AM, 2g DAAM respectively, 4g AMPS puts into wide-necked bottle, and getting a certain amount of pure water, to be made into monomer total mass percentage concentration be the aqueous solution of 20%; Being titrated to pH by NaOH solution is 7, and then add initiator ammonium persulfate solution and sodium sulfite solution (mol ratio is 1:1), initiator add-on is 0.4% of monomer total mass; Add linking agent MBA, linking agent add-on is 0.07% of monomer total mass; Wide-necked bottle is put into 50 DEG C of water-baths and react 3h, finally obtain AM-DAAM-AMPS ter-polymers gel particle with absolute ethanol washing, pulverizing, oven dry.
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Cited By (13)
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CN104710568A (en) * | 2015-04-01 | 2015-06-17 | 西安石油大学 | Preparation method of retarding swelling anti-salt viscoelastic particle profile control agent |
CN104961863A (en) * | 2015-06-25 | 2015-10-07 | 武汉工程大学 | Method for preparing polysaccharide biogum polymer gel profile control agent |
CN105368422A (en) * | 2015-12-09 | 2016-03-02 | 天津大港油田滨港集团博弘石油化工有限公司 | Pre-crosslinking swell particle profile-control agent and preparation method thereof |
CN105504645A (en) * | 2015-12-19 | 2016-04-20 | 中国石油天然气股份有限公司 | Terpolymer elastic particle profile control material and preparation method thereof |
CN105860947A (en) * | 2016-04-19 | 2016-08-17 | 中国石油天然气股份有限公司 | Slowly-degradable high-temperature-resistant high-salinity profile control agent and preparation method thereof |
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CN109762540A (en) * | 2018-12-20 | 2019-05-17 | 中国石油集团川庆钻探工程有限公司 | Supermolecule plugging agent and preparation method thereof |
CN113265026A (en) * | 2021-05-24 | 2021-08-17 | 西南石油大学 | Water-swelling rubber flexible temporary plugging particle and preparation method thereof |
CN113773821A (en) * | 2020-06-10 | 2021-12-10 | 中国石油天然气股份有限公司 | High-temperature blockage-regulating cleanup additive and preparation method and application thereof |
CN114426638A (en) * | 2020-10-14 | 2022-05-03 | 中国石油化工股份有限公司 | Heavy oil reservoir high-permeability zone multistage plugging and conditioning agent and preparation method thereof |
CN115093600A (en) * | 2022-07-08 | 2022-09-23 | 中海石油(中国)有限公司 | Micro-bubble/foam self-crosslinking self-adaptive gel deep profile control and flooding system and application thereof |
CN115960309A (en) * | 2023-02-13 | 2023-04-14 | 西南石油大学 | Polymer sand stabilizer and preparation method thereof |
CN118165181A (en) * | 2024-05-13 | 2024-06-11 | 西南石油大学 | Preparation method and application of microcapsule delayed initiation gel system |
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CN118165181A (en) * | 2024-05-13 | 2024-06-11 | 西南石油大学 | Preparation method and application of microcapsule delayed initiation gel system |
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Application publication date: 20150114 |