CN103965848A - Composite profile control agent and preparation method thereof - Google Patents

Composite profile control agent and preparation method thereof Download PDF

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Publication number
CN103965848A
CN103965848A CN201410189113.0A CN201410189113A CN103965848A CN 103965848 A CN103965848 A CN 103965848A CN 201410189113 A CN201410189113 A CN 201410189113A CN 103965848 A CN103965848 A CN 103965848A
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oily sludge
modifying agents
active agent
profile modifying
injectivity profile
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CN201410189113.0A
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CN103965848B (en
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范维玉
闫理停
南国枝
罗辉
汪君江
汤玉敏
赵品晖
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China University of Petroleum East China
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China University of Petroleum East China
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/50Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
    • C09K8/504Compositions based on water or polar solvents
    • C09K8/506Compositions based on water or polar solvents containing organic compounds
    • C09K8/508Compositions based on water or polar solvents containing organic compounds macromolecular compounds

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  • General Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Organic Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)

Abstract

The invention relates to a composite profile control agent prepared from oily sludge and hard asphalt. The composite profile control agent comprises the following components in percentage by weight: 10-70 percent of oily sludge, 1-20 percent of emulsified asphalt, 1-5 percent of a surfactant, 0-1 percent of an assistant and the balance of water. The composite profile control agent is good in temperature resistance and salt resistance, high in blockage strength, appropriate in allowable working time, long in blockage period of validity, low in cost and high in practicality. The preparation method is simple.

Description

A kind of compounded injectivity profile modifying agents and preparation method thereof
Technical field
The present invention relates to oilfield chemistry and oil recovery technique field, particularly compound oily sludge base profile modificator of a kind of emulsified bitumen (heavy oil) and preparation method thereof.
Background technology
Oily sludge refers to that crude oil or processed oil sneak into earth or other media, and oil content wherein can not directly reclaim and may cause the mixture of the variform of environmental pollution.Oily sludge generally has that generation is large, oleaginousness is high, viscosity is large, particle is thin, the difficult characteristic of dewatering.The processing of oily sludge is a difficult problem for each elephant, but it is stranded in ground, can bring many harm again.Oily sludge is bulky, if do not processed directly discharge, not only take a large amount of arable lands, and all will pollute surrounding soil, water body, air, with foul gas, produce, and all will pollute surrounding soil, water body, air, with foul gas, produce, mud contains the heavy metals such as a large amount of pathogenic bacterias, parasite (ovum), copper, zinc, chromium, mercury, the hazardous and noxious substances of the difficult degradations such as salt and polychlorobiphenyl, Dioxins, radionuclide.Landfill, can cause underground water severe contamination arbitrarily, and food crop ecosystem is destroyed, and in human lives, regional AIDS sickness rate rises greatly.
Complicated owing to forming, separation difficulty, the processing of oily sludge and regeneration are one of difficult problems in oilfield chemistry research.Wantonly being emitted on when endangering surrounding enviroment and human health of a large amount of oily sludges, the fine expense of great number also makes whole oil field bear heavy economical load.For this problem, just actively take various counter-measures both at home and abroad, hope can be alleviated the variety of issue that oily sludge brings.The method of processing oily sludge both at home and abroad generally has burning method, biological treatment, hot washing method, solvent extration, chemical demulsification method, solid-liquid isolation method, pyrogenic process, oily sludge comprehensive utilization etc.
Chinese patent 03149758.6, Chinese patent 200810249847.8 and Chinese patent 201010245429.9 disclose respectively a kind of oily sludge base profile modificator, it all adopts oily sludge and water is main body, add a small amount of additive to make amendment, part amendment has carried out practical application, respond well.But the plugging strength of above-mentioned amendment under formation condition is inadequate, validity period is short, increase the secondary cost of profile control.Chinese patent 201010288718.7 and Chinese patent 201210241537.8 disclose respectively and take the plugging agent that pitch particle and emulsified bitumen be main body in addition, but its complex process, cost is higher, is unfavorable for large-scale practical application.
In a word, existing oily sludge base profile modificator mainly exists the problems such as plugging effect is poor, and heat-resistant salt-resistant is inadequate, and validity period is short, and break-in increases the cost of Profile Control in Injection Well.And the good pitch class of effect plugging agent complicated process of preparation cost is high, do not there is general applicability.
Summary of the invention
For problems of the prior art, the object of this invention is to provide a kind of use oily sludge and emulsified bitumen (heavy oil) and prepare the method for composite highly effective amendment, gained amendment heat-resistant salt-resistant is good, plugging strength is high, operable time is suitable, shutoff validity period is long, and cost is low, practical.
Concrete technical scheme is as follows:
A compounded injectivity profile modifying agents prepared by oily sludge and gilsonite, according to weight percent meter, comprises following composition: oily sludge: 10%~70%; Emulsified bitumen: 1%~20%; Tensio-active agent: 1%~5%; Auxiliary agent: 0%-1%; The water of surplus.
On the basis of such scheme, the softening temperature of described emulsified bitumen pitch used is at 40-130 ℃, and 100 ℃ of viscositys are at 2~425Pa.s.
On the basis of such scheme, described tensio-active agent be in aniorfic surfactant, nonionic surface active agent and cationic surfactant a kind of, two or three.
On the basis of such scheme, described aniorfic surfactant is one or more the combination in Yatall MA sulfonate, alkyl sulfonates, alkyl benzene sulfonate, alkylsurfuric acid salt and lignin sulfonate.
On the basis of such scheme, described nonionic surface active agent is one or more the combination in alkylphenol polyoxyethylene, polyoxyethylene nonylphenol ether, aralkyl phenol polyethenoxy ether, polyoxyethylene sorbitan fatty acid ester, sorbitan fatty acid ester, fatty polyol and fatty alcohol-polyoxyethylene ether.
On the basis of such scheme, described cationic surfactant is one or more the combination in alkyl amine cats product, quaternary cationic surfactant, amide salt cationoid tensio-active agent, imidazolines cats product, oxyethane Diamines cats product and wooden amine cation tensio-active agent.
On the basis of such scheme, described auxiliary agent is one or more the combination in ammonium salt, calcium salt, strontium salt, water glass, Xylo-Mucine, Natvosol, polyvinyl alcohol, polyacrylamide, polyoxyethylene glycol, urethane, guar gum, yellow first glue and wilkinite.
Prepare a method for compounded injectivity profile modifying agents as mentioned above, concrete step is as follows:
(1) take according to quantity each component, oily sludge is heated to room temperature~90 ℃;
(2) auxiliary agent is added to the water, dilution, standby;
(3) tensio-active agent is dissolved in the water of 40 ℃~90 ℃, is mixed with solution;
(4) surfactant soln is added in container and insulation, add described oily sludge, stir, oily sludge is dispersed in surfactant soln; Afterwards emulsified bitumen and auxiliary agent are added in above-mentioned solution and fully stirring, be cooled to room temperature, obtain amendment finished product.
Compounded injectivity profile modifying agents heat-resistant salt-resistant of the present invention is good, and plugging strength is high, and operable time is suitable, and shutoff validity period is long, and cost is low, practical, and preparation method is simple.
Embodiment
Following examples, only for the present invention will be further described, are not for limiting the scope of the invention.
The experimental technique using in following embodiment if no special instructions, be ordinary method, wherein to the evaluation of amendment sealing characteristics with reference to < < SY/T5590-2004 profile control and method of evaluating performance > >.
In following embodiment, material used, reagent etc., if no special instructions, all can obtain from commercial channels.
Embodiment 1~3:
The oily sludge that the compounded injectivity profile modifying agents that embodiment 1~3 provides adopts is taken from Gudao area of Shengli Oilfield oil recovery factory, ionic surface active agent is alkyl benzene sulfonate, pitch is that softening temperature is the gilsonite of 86 ℃ (100 ℃ of viscositys are 425Pa.s), and auxiliary agent is polyacrylamide.
The preparation method of the amendment that the present embodiment provides comprises the following steps:
1. according to proportioning, get oily sludge, standby under room temperature;
2. auxiliary agent is added to the water, dilution, standby;
3. tensio-active agent is dissolved in the water at 40 ℃ to wiring solution-forming;
4. adopt ordinary method that described pitch is made to emulsified bitumen;
5. described surfactant soln is added in container and insulation, add described oily sludge, use high-speed shearing equipment that oily sludge is dispersed in surfactant soln;
6. emulsified bitumen and auxiliary agent added to above-mentioned system and fully stir, being cooled to room temperature, obtaining amendment finished product.
Amendment to above-mentioned preparation is evaluated, and result shows, embodiment 1 compares with embodiment 3 with embodiment 2, in injection process, pressure is lower, injects steadily, and embodiment 3 injection pressures raise relatively very fast, but all lower, injecting continuously 2PV pressure maximum is only 0.3MPa.In embodiment 1~3, sealing ratiod is respectively 96%, 94% and 93%, and after water drive 100PV, sealing ratiod does not have obvious reduction, illustrates that the water plugging effect of amendment is comparatively desirable.
The proportion design of table 1 embodiment 1-3 compounded injectivity profile modifying agents (weight percent, % surplus is water)
Embodiment 4~6:
The oily sludge that the compounded injectivity profile modifying agents that embodiment 4~6 provides adopts is taken from Gudao area of Shengli Oilfield oil recovery factory, tensio-active agent is alkyl benzene sulfonate, pitch is that softening temperature is the gilsonite of 86 ℃ (100 ℃ of viscositys are 425Pa.s), and auxiliary agent is Natvosol.
The preparation method of the amendment that the present embodiment provides comprises the following steps:
1. according to proportioning, get oily sludge, be heated to 80 ℃ standby;
2. auxiliary agent is added to the water, dilution, standby;
3. according to proportioning, tensio-active agent is dissolved in the water of 60 ℃ to wiring solution-forming;
4. adopt ordinary method that described pitch is made to emulsified bitumen;
5. described surfactant soln is added in container and insulation, add described oily sludge, use high-speed shearing equipment that oily sludge is dispersed in soap lye;
6. emulsified bitumen and auxiliary agent added to above-mentioned system and fully stir, being cooled to room temperature, obtaining amendment finished product.
Amendment to above-mentioned preparation is evaluated, and result shows, is preheating to the 80 ℃ of times that can obviously reduce the shear agitation in preparation process in blocking agent preparation process, and disperses the granularity of the amendment obtain less, and stability is better.In embodiment 4~6, sealing ratiod is respectively 97%, 94% and 94%, and after water drive 100PV, sealing ratiod does not have obvious reduction, illustrates that the water plugging effect of amendment is comparatively desirable.
The proportion design of table 2 embodiment 4-6 compounded injectivity profile modifying agents (weight percent, % surplus is water)
Embodiment 7~10:
The oily sludge that the compounded injectivity profile modifying agents that embodiment 7~10 provides adopts is taken from Gudao area of Shengli Oilfield oil recovery factory, embodiment 7~10 tensio-active agent used is respectively the composite of anion surfactant alkyl benzene sulfonate, nonionogenic tenside alkylphenol polyoxyethylene, positively charged ion imidazolines and alkyl benzene sulfonate and alkylphenol polyoxyethylene mass ratio 1: 1, pitch is that softening temperature is the gilsonite of 86 ℃ (100 ℃ of viscositys are 425Pa.s), and auxiliary agent is polyoxyethylene glycol.
The preparation method of the amendment that the present embodiment provides comprises the following steps:
1. according to proportioning, get oily sludge, be heated to 80 ℃ standby;
2. auxiliary agent is added to the water, dilution, standby;
3. according to proportioning, tensio-active agent is dissolved in the water of 80 ℃ to wiring solution-forming;
4. adopt ordinary method that described pitch is made to emulsified bitumen;
5. described surfactant soln is added in container and insulation, add described oily sludge, use high-speed shearing equipment that oily sludge is dispersed in soap lye;
6. emulsified bitumen and auxiliary agent added to above-mentioned system and fully stir, being cooled to room temperature, obtaining amendment finished product.
Amendment to above-mentioned preparation is evaluated, in embodiment, select after non-ionic type and cats product, the amendment dispersion effect preparing does not have considerable change, granularity is lower, but after entering stratum, lifetime is all shorter than aniorfic surfactant, the ability of injecting is continuously slightly poor, can be to the faster shutoff of specific stratum.Use alkyl benzene sulfonate and the alkylphenol polyoxyethylene mass ratio composite gained tensio-active agent of 1: 1 to carry out the advantage that amendment that emulsification suspension prepares has both concurrently, dispersion effect is good, migration ability is also than between two single doses, and overall performance is better than two groups of single doses.In embodiment 7~10, sealing ratiod is respectively 95%, 94%, 94% and 96%, and sealing ratiod slight reduction only after water drive 100PV, still more than 90%, amendment has good plugging effect, in actual mechanical process, migration distance and the shutoff time that can control amendment by adding different surfactant types, reach adjustable controlled effect.
The proportion design of table 3 embodiment 7-10 compounded injectivity profile modifying agents (weight percent, % surplus is water)
Embodiment 11~13:
The oily sludge that the compounded injectivity profile modifying agents that the present embodiment provides adopts is taken from Gudao area of Shengli Oilfield oil recovery factory, anion surfactant is alkyl benzene sulfonate, pitch is that softening temperature is the gilsonite of 86 ℃ (100 ℃ of viscositys are 425Pa.s), and auxiliary agent is respectively respectively ammonium salt, calcium salt and strontium salt.
The preparation method of the amendment that the present embodiment provides comprises the following steps:
1. according to proportioning, get oily sludge, be heated to 80 ℃ standby;
2. auxiliary agent is added to the water, dilution, standby;
3. according to proportioning, tensio-active agent is dissolved in the water of 90 ℃ to wiring solution-forming;
4. adopt ordinary method that described pitch is made to emulsified bitumen;
5. described surfactant soln is added in container and insulation, add described oily sludge, use high-speed shearing equipment that oily sludge is dispersed in soap lye;
6. emulsified bitumen and auxiliary agent added to above-mentioned system and fully stir, being cooled to room temperature, obtaining amendment finished product.
Amendment to above-mentioned preparation is evaluated, and result surface, along with the increasing of oily sludge consumption, it is large that the viscosity of system becomes gradually, the corresponding reduction of mobility, all can inject stratum, though pressure becomes large with the increase of oily sludge consumption when just injecting same PV and counting.In embodiment 10~12, sealing ratiod is respectively 94%, 95% and 94%, and sealing ratiod slight reduction only after water drive 100PV, and still more than 90%, amendment has good plugging effect.
The proportion design of table 4 embodiment 11~13 compounded injectivity profile modifying agents (weight percent, % surplus is water)
Embodiment 14~16:
The oily sludge that the compounded injectivity profile modifying agents that the present embodiment provides adopts is taken from Gudao area of Shengli Oilfield oil recovery factory, anion surfactant is alkyl benzene sulfonate, pitch (heavy oil) is respectively Qinhuangdao AH-90, the super viscous crude in Gudao area of Shengli Oilfield oil recovery factory and hard pitch, 100 ℃ of viscositys are respectively 2.8Pa.s, 5.9Pa.s and 425Pa.s, and auxiliary agent is Xylo-Mucine.
The preparation method of the amendment that the present embodiment provides comprises the following steps:
1. according to proportioning, get oily sludge, be heated to 80 ℃ standby;
2. auxiliary agent is added to the water, dilution, standby;
3. according to proportioning, tensio-active agent is dissolved in the water of 80 ℃ to wiring solution-forming;
4. adopt ordinary method that described pitch is made to emulsified bitumen;
5. described surfactant soln is added in container and insulation, add described oily sludge, use high-speed shearing equipment that oily sludge is dispersed in soap lye;
6. emulsified bitumen and auxiliary agent added to above-mentioned system and fully stir, being cooled to room temperature, obtaining amendment finished product.
Amendment to above-mentioned preparation is evaluated, and uses different emulsified bitumens (heavy oil) to fly dispersing property impact not quite to system in embodiment, and dispersion effect is all comparatively desirable, and system granularity is low, is uniformly dispersed, and injectability is good continuously.In embodiment 14~16, sealing ratiod is respectively 95%, 94% and 97%, and sealing ratiod slight reduction only after water drive 100PV, and still more than 90%, amendment has good plugging effect.But the amendment that uses viscosity to reach the gilsonite gained of 400Pa.s has better heat resistance, still has more than 95% sealing ratiod under more than 80 ℃ simulation stratum conditions.
The proportion design of table 5 embodiment 14-16 compounded injectivity profile modifying agents (weight percent, % surplus is water)
Table 6 embodiment 1-16 pitch used (heavy oil) performance index
Table 7 pitch (heavy oil) gained emulsified bitumen (heavy oil) performance index
The present invention's oily sludge used is all selected from Gudao area of Shengli Oilfield oil recovery factory, and relevant character and particle size analysis are as table 8 and 9.
Table 8 is used contains sludge quality analysis
The pure mud of table 9 oily sludge divides particle size analysis
Note: D (4,3) is volume average particle size, and D (3,2) is surface-area median size, and D50 is 50% grain diameter scope
Above-mentioned detailed description of compounded injectivity profile modifying agents and preparation method thereof being carried out with reference to embodiment; illustrative rather than determinate; can list several embodiment according to institute's limited range; therefore in the variation and the modification that do not depart under general plotting of the present invention, within should belonging to protection scope of the present invention.

Claims (8)

1. a compounded injectivity profile modifying agents, is characterized in that: according to weight percent meter, comprise following composition: oily sludge: 10%~70%; Emulsified bitumen: 1%~20%; Tensio-active agent: 1%~5%; Auxiliary agent: 0%-1%; The water of surplus.
2. compounded injectivity profile modifying agents according to claim 1, is characterized in that: the softening temperature of described emulsified bitumen pitch used is at 40-130 ℃, and 100 ℃ of viscositys are at 2~425Pa.s.
3. compounded injectivity profile modifying agents according to claim 1, is characterized in that: described tensio-active agent be in aniorfic surfactant, nonionic surface active agent and cationic surfactant a kind of, two or three.
4. compounded injectivity profile modifying agents according to claim 3, is characterized in that: described aniorfic surfactant is one or more the combination in Yatall MA sulfonate, alkyl sulfonates, alkyl benzene sulfonate, alkylsurfuric acid salt and lignin sulfonate.
5. compounded injectivity profile modifying agents according to claim 3, is characterized in that: described nonionic surface active agent is one or more the combination in alkylphenol polyoxyethylene, polyoxyethylene nonylphenol ether, aralkyl phenol polyethenoxy ether, polyoxyethylene sorbitan fatty acid ester, sorbitan fatty acid ester, fatty polyol and fatty alcohol-polyoxyethylene ether.
6. compounded injectivity profile modifying agents according to claim 3, is characterized in that: described cationic surfactant is one or more the combination in alkyl amine cats product, quaternary cationic surfactant, amide salt cationoid tensio-active agent, imidazolines cats product, oxyethane Diamines cats product and wooden amine cation tensio-active agent.
7. compounded injectivity profile modifying agents according to claim 1, is characterized in that: described auxiliary agent is one or more the combination in ammonium salt, calcium salt, strontium salt, water glass, Xylo-Mucine, Natvosol, polyvinyl alcohol, polyacrylamide, polyoxyethylene glycol, urethane, guar gum, yellow first glue and wilkinite.
8. a method of preparing compounded injectivity profile modifying agents described in claim 1-7 any one, is characterized in that concrete step is as follows:
(1) take according to quantity each component, oily sludge is heated to room temperature~90 ℃;
(2) auxiliary agent is added to the water, dilution, standby;
(3) tensio-active agent is dissolved in the water of 40 ℃~90 ℃, is mixed with solution;
(4) surfactant soln is added in container and insulation, add described oily sludge, stir, oily sludge is dispersed in surfactant soln; Afterwards emulsified bitumen and auxiliary agent are added in above-mentioned solution and fully stirring, be cooled to room temperature, obtain amendment finished product.
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CN104356396A (en) * 2014-11-24 2015-02-18 天津大港油田滨港集团博弘石油化工有限公司 Preparation method of lignin sulfite profile control agent for oil production
CN104830295A (en) * 2015-05-08 2015-08-12 中国石油天然气股份有限公司 Activating agent for water plugging and water-plugging thickened oil activating agent prepared from same
CN104927814A (en) * 2015-05-08 2015-09-23 中国石油化工股份有限公司 Nano-grade self-aggregation system used in profile control, and preparation method thereof
CN104946221A (en) * 2015-06-08 2015-09-30 成都鼎鸿石油技术有限公司 Low-density low-damage kill fluid
CN105112035A (en) * 2015-08-21 2015-12-02 中国石油天然气股份有限公司 Selective water blocking agent prepared from oil residues or sludge containing oil and preparation method thereof
CN105154045A (en) * 2015-08-27 2015-12-16 山东聚鑫化工有限公司 Viscous crude oil emulsion phase inversion profile modifying water plugging agent
CN105368421A (en) * 2015-11-19 2016-03-02 里群 Non-resin type profile control agent and application thereof in petroleum exploitation process
CN105623633A (en) * 2014-10-31 2016-06-01 中国石油化工股份有限公司 Emulsified bitumen profile control plugging agent
CN106800920A (en) * 2016-12-28 2017-06-06 中国石油天然气股份有限公司 A kind of plugging agent and its preparation method and application
CN106833573A (en) * 2016-12-28 2017-06-13 中国石油天然气股份有限公司 A kind of plugging agent and its preparation method and application
CN107011882A (en) * 2017-04-01 2017-08-04 陕西邦希化工有限公司 High shale content content oily sludge deep electrical structure and preparation method and application
CN107858142A (en) * 2017-11-22 2018-03-30 烟台智本知识产权运营管理有限公司 A kind of coal-fired waste residue profile control agent and preparation method thereof
CN107858141A (en) * 2017-11-22 2018-03-30 烟台智本知识产权运营管理有限公司 A kind of coal-fired waste residue profile control agent and profile control method
CN108929662A (en) * 2018-08-08 2018-12-04 陕西友邦石油工程技术有限公司 It is a kind of to carry the Profile Control in Injection Well technique that liquid prepares oily sludge blocking agent with cleaning
CN113548819A (en) * 2021-04-14 2021-10-26 新疆大学 Modified asphalt mucilage based on oil sludge pyrolysis residues and preparation method thereof

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CN105623633A (en) * 2014-10-31 2016-06-01 中国石油化工股份有限公司 Emulsified bitumen profile control plugging agent
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CN104830295A (en) * 2015-05-08 2015-08-12 中国石油天然气股份有限公司 Activating agent for water plugging and water-plugging thickened oil activating agent prepared from same
CN104927814A (en) * 2015-05-08 2015-09-23 中国石油化工股份有限公司 Nano-grade self-aggregation system used in profile control, and preparation method thereof
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CN106833573A (en) * 2016-12-28 2017-06-13 中国石油天然气股份有限公司 A kind of plugging agent and its preparation method and application
CN106800920A (en) * 2016-12-28 2017-06-06 中国石油天然气股份有限公司 A kind of plugging agent and its preparation method and application
CN106833573B (en) * 2016-12-28 2019-05-07 中国石油天然气股份有限公司 A kind of plugging agent and its preparation method and application
CN106800920B (en) * 2016-12-28 2019-06-11 中国石油天然气股份有限公司 A kind of plugging agent and its preparation method and application
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CN113548819A (en) * 2021-04-14 2021-10-26 新疆大学 Modified asphalt mucilage based on oil sludge pyrolysis residues and preparation method thereof

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