CN103965848B - Composite profile control agent and preparation method thereof - Google Patents
Composite profile control agent and preparation method thereof Download PDFInfo
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- CN103965848B CN103965848B CN201410189113.0A CN201410189113A CN103965848B CN 103965848 B CN103965848 B CN 103965848B CN 201410189113 A CN201410189113 A CN 201410189113A CN 103965848 B CN103965848 B CN 103965848B
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- 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
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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
Technical field
The present invention relates to oilfield chemistry and oil recovery technique field, it is combined particularly to a kind of emulsified asphalt (heavy oil) and contains greasy dirt
Mud profile control agent and preparation method thereof.
Background technology
Oily sludge refers to crude oil or product oil is mixed into soil or other media, and oil therein can not directly reclaim and possibility
Cause the mixture of the variform of environmental pollution.Oily sludge typically has that yield is big, oil content is high, viscosity is big, granule
Carefully, it is dehydrated difficult characteristic.The process of oily sludge is a difficult problem for each elephant, but it is stranded in ground, can bring many danger again
Evil.Oily sludge is bulky, if not being acted upon directly discharging, not only takies a large amount of arable lands, and to surrounding soil, water
Body, air all will result in pollution, produce with foul gass, and all will result in pollution, companion to surrounding soil, water body, air
Foul smelling gas produces, and mud contains the heavy metals such as substantial amounts of pathogen, parasite (ovum), copper, zinc, chromium, hydrargyrum, salt and many
The poisonous and harmful substance of the difficult degradations such as chlordiphenyl, dioxin, radionuclide.Arbitrarily fill, subsoil water severe contamination can be led to,
Cereal crops ecosystem is destroyed, and in human lives, regional AIDS sickness rate rises significantly.
Because composition is complicated, separate difficult, the process of oily sludge and regeneration are the difficult problems in oilfield chemistry research
One of.While being wantonly emitted on harm surrounding enviroment and human health of a large amount of oily sludges, the fine expense of great number also makes
Heavy financial burden has been born in whole oil field.For this problem, just actively taking various counter-measures both at home and abroad it would be desirable to
Alleviate the various problems that oily sludge brings.The method processing oily sludge both at home and abroad typically has burning method, biological treatment, heat
Washing method, solvent extraction, 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 are respectively
Disclose a kind of oily sludge base profile modificator, it all adopts oily sludge and water is main body, adds a small amount of additive to make profile control agent,
Part profile control agent has been carried out practical application, respond well.But, above-mentioned profile control agent plugging strength under formation conditions is not
Enough, effect duration is short, increases the secondary cost of profile control.In addition Chinese patent 201010288718.7 and Chinese patent
201210241537.8 individually disclose the plugging agent based on pitch particle and emulsified asphalt, but its complex process, cost
Higher, it is unfavorable for large-scale practical application.
In a word, to be primarily present plugging effect poor for existing oily sludge base profile modificator, and not, effect duration is short for heat-resistant salt-resistant
The problems such as, break-in increases the cost of Profile Control in Injection Well.And effect preferable Colophonium class plugging agent complicated process of preparation high cost, no
There is general applicability.
Content of the invention
For problems of the prior art, it is an object of the invention to provide a kind of use oily sludge and emulsified asphalt
The method that (heavy oil) prepares composite highly effective profile control agent, gained profile control agent heat-resistant salt-resistant is good, and plugging strength is high, and operable time is fitted
Preferably, closure effect duration is long, and low cost is practical.
Specific technical scheme is as follows：
A kind of oily sludge and the compounded injectivity profile modifying agents of Uintahite preparation, in percentage by weight, form including following：Contain
Greasy dirt：10%～70%；Emulsified asphalt：1%～20%；Surfactant：1%～5%；Auxiliary agent：0%-1%；Surplus
Water.
On the basis of such scheme, at 40-130 DEG C, 100 DEG C of viscositys exist the softening point of Colophonium used by described emulsified asphalt
2～425Pa.s.
On the basis of such scheme, described surfactant is anionic surfactant, non-ionic surface is lived
Property one of agent and cationic surface active agent, two or three.
On the basis of such scheme, described anionic surfactant be tall oil sulfonate, alkyl sulfonates,
The combination of one or more of alkyl benzene sulfonate, alkylsurfuric acid salt and lignin sulfonate.
On the basis of such scheme, described nonionic surfactant is alkylphenol polyoxyethylene, nonyl phenol gathers
Oxygen vinyl Ether, aralkyl phenol polyethenoxy ether, polyoxyethylene sorbitan fatty acid ester, sorbitan fatty acid ester, fat
The combination of fat acid one or more of polyhydric alcohol and fatty alcohol-polyoxyethylene ether.
On the basis of such scheme, described cationic surface active agent be alkyl amine cationic surfactant,
Quaternary cationic surfactant, amidic-salt cationoid surfactant, imidazolines cationic surfactant, ring
The combination of one or more of oxidative ethane Diamines cationic surfactant and wooden amine cation surfactant.
On the basis of such scheme, described auxiliary agent is ammonium salt, calcium salt, strontium salt, waterglass, sodium carboxymethyl cellulose, hydroxyl
Ethyl cellulose, polyvinyl alcohol, polyacrylamide, Polyethylene Glycol, polyurethane, guar gum, yellow first one of glue and bentonite
Or several combinations.
A kind of method preparing compounded injectivity profile modifying agents as described above, specific step is as follows：
(1) weigh each component according to quantity, oily sludge is heated to room temperature～90 DEG C；
(2) auxiliary agent is added to the water, dilution, standby；
(3) surfactant is dissolved in 40 DEG C～90 DEG C of water, is configured to solution；
(4) surfactant solution is added in container and be incubated, add described oily sludge, stirring, by oily sludge
It is dispersed in surfactant solution；Afterwards emulsified asphalt and auxiliary agent are added in above-mentioned solution and be sufficiently stirred for, be cooled to room
Temperature, obtains profile control agent 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 closure is effectively
Phase is long, low cost, practical, and preparation method is simple.
Specific embodiment
Following examples are only used for that the present invention will be further described, are not for limiting the scope of the present invention.
Experimental technique used in following embodiments if no special instructions, is conventional method, wherein profile control agent is sealed
The evaluation reference of stifled performance《SY/T5590-2004 profile control and method of evaluating performance》.
Material used, reagent etc. in following embodiments, if no special instructions, all commercially obtain.
Embodiment 1～3：
The oily sludge that the compounded injectivity profile modifying agents that embodiment 1～3 provides are adopted is taken from Gudao area of Shengli Oilfield oil recovery factory, from
Sub- surfactant is alkyl benzene sulfonate, the Uintahite that Colophonium is 86 DEG C (100 DEG C of viscositys are 425Pa.s) for softening point,
Auxiliary agent is polyacrylamide.
The preparation method of the profile control agent that the present embodiment provides comprises the following steps：
1. take oily sludge according to proportioning, standby under room temperature；
2. auxiliary agent is added to the water, dilution, standby；
3. surfactant is dissolved in the water at 40 DEG C, wiring solution-forming；
4. described Colophonium is made by emulsified asphalt using conventional method；
5. described surfactant solution is added in container and be incubated, add described oily sludge, using high speed shear
Oily sludge is dispersed in surfactant solution equipment；
6. emulsified asphalt and auxiliary agent are added above-mentioned system and be sufficiently stirred for, be cooled to room temperature, obtain profile control agent finished product.
The profile control agent of above-mentioned preparation is evaluated, result shows, embodiment 1 with embodiment 2 compared with Example 3, is noted
During entering, pressure is lower, and steadily, embodiment 3 injection pressure rise is relatively fast, but all relatively low for injection, is continuously injected into 2PV pressure
Power is maximum to be only 0.3MPa.In embodiment 1～3, sealing ratiod is respectively sealing ratiod after 96%, 94% and 93%, and water drive 100PV
Not obviously lowered, illustrate that the water plugging effect of profile control agent is ideal.
The proportion design (percentage by weight, the balance of water of %) of table 1 embodiment 1-3 compounded injectivity profile modifying agents
Embodiment 4～6：
The oily sludge that the compounded injectivity profile modifying agents that embodiment 4～6 provides are adopted is taken from Gudao area of Shengli Oilfield oil recovery factory, table
Face activating agent is alkyl benzene sulfonate, the Uintahite that Colophonium is 86 DEG C (100 DEG C of viscositys are 425Pa.s) for softening point, auxiliary agent
For hydroxyethyl cellulose.
The preparation method of the profile control agent that the present embodiment provides comprises the following steps：
1. take oily sludge according to proportioning, be heated to 80 DEG C standby；
2. auxiliary agent is added to the water, dilution, standby；
3. according to proportioning, surfactant is dissolved in 60 DEG C of water, wiring solution-forming；
4. described Colophonium is made by emulsified asphalt using conventional method；
5. described surfactant solution is added in container and be incubated, add described oily sludge, using high speed shear
Oily sludge is dispersed in soap lye equipment；
6. emulsified asphalt and auxiliary agent are added above-mentioned system and be sufficiently stirred for, be cooled to room temperature, obtain profile control agent finished product.
The profile control agent of above-mentioned preparation is evaluated, result shows, being preheating to 80 DEG C in blocking agent preparation process can be bright
The aobvious time reducing the shear agitation in preparation process, and disperse that the granularity of profile control agent obtaining is less, stability is more preferable.Implement
After in example 4～6, sealing ratiod is respectively 97%, 94% and 94%, and water drive 100PV, sealing ratiod is not obviously lowered, and profile control is described
The water plugging effect of agent is ideal.
The proportion design (percentage by weight, the balance of water of %) of table 2 embodiment 4-6 compounded injectivity profile modifying agents
Embodiment 7～10：
The oily sludge that the compounded injectivity profile modifying agents that embodiment 7～10 provides are adopted is taken from Gudao area of Shengli Oilfield oil recovery factory,
Surfactant used by embodiment 7～10 is respectively anion surfactant alkyl benzene sulfonate, non-ionic surface active
Agent alkylphenol polyoxyethylene, positive ion imidazoline class and alkyl benzene sulfonate and alkylphenol polyoxyethylene mass ratio 1: 1
Compounding, Colophonium is the Uintahite that softening point is 86 DEG C (100 DEG C of viscositys are 425Pa.s), and auxiliary agent is Polyethylene Glycol.
The preparation method of the profile control agent that the present embodiment provides comprises the following steps：
1. take oily sludge according to proportioning, be heated to 80 DEG C standby；
2. auxiliary agent is added to the water, dilution, standby；
3. according to proportioning, surfactant is dissolved in 80 DEG C of water, wiring solution-forming；
4. described Colophonium is made by emulsified asphalt using conventional method；
5. described surfactant solution is added in container and be incubated, add described oily sludge, using high speed shear
Oily sludge is dispersed in soap lye equipment；
6. emulsified asphalt and auxiliary agent are added above-mentioned system and be sufficiently stirred for, be cooled to room temperature, obtain profile control agent finished product.
The profile control agent of above-mentioned preparation is evaluated, after selecting nonionic and cationic surfactant in embodiment,
The profile control agent dispersion effect preparing does not have significant change, and granularity is relatively low, but after entering stratum, existence time is all than the moon
Ionic surfactant short, the ability being continuously injected into is slightly worse, and particular formation faster can be blocked.Using benzene sulfonamide
Barbiturates carries out, with the compounding gained surfactant of alkylphenol polyoxyethylene mass ratio 1: 1, the tune that emulsifying suspension prepares
Cut open agent and have both advantages concurrently, dispersion effect is good, migration ability also ratio between two single doses, overall performance be better than two groups of lists
Agent.After in embodiment 7～10, sealing ratiod is respectively 95%, 94%, 94% and 96%, and water drive 100PV, sealing ratiod only slightly drops
Low, still more than 90%, profile control agent has preferable plugging effect, in actual mechanical process, can be different by adding
Surfactant types, to control migration distance and the blocking time of profile control agent, reach adjustable controlled effect.
The proportion design (percentage by weight, the balance of water of %) of table 3 embodiment 7-10 compounded injectivity profile modifying agents
Embodiment 11～13：
The oily sludge that adopted of compounded injectivity profile modifying agents that the present embodiment provides is taken from Gudao area of Shengli Oilfield oil recovery factory, cloudy from
Sub- surfactant is alkyl benzene sulfonate, the Uintahite that Colophonium is 86 DEG C (100 DEG C of viscositys are 425Pa.s) for softening point,
Auxiliary agent is respectively ammonium salt, calcium salt and strontium salt respectively.
The preparation method of the profile control agent that the present embodiment provides comprises the following steps：
1. take oily sludge according to proportioning, be heated to 80 DEG C standby；
2. auxiliary agent is added to the water, dilution, standby；
3. according to proportioning, surfactant is dissolved in 90 DEG C of water, wiring solution-forming；
4. described Colophonium is made by emulsified asphalt using conventional method；
5. described surfactant solution is added in container and be incubated, add described oily sludge, using high speed shear
Oily sludge is dispersed in soap lye equipment；
6. emulsified asphalt and auxiliary agent are added above-mentioned system and be sufficiently stirred for, be cooled to room temperature, obtain profile control agent finished product.
The profile control agent of above-mentioned preparation is evaluated, result surface, with the increasing of oily sludge consumption, system sticky
Degree becomes larger, and mobility accordingly reduces, and all can inject stratum, though pressure is with oily sludge when simply injecting same PV number
The increase of consumption and become big.In embodiment 10～12, sealing ratiod blocks after being respectively 94%, 95% and 94%, and water drive 100PV
Rate only slightly reduces, and still more than 90%, profile control agent has preferable plugging effect.
The proportion design (percentage by weight, the balance of water of %) of table 4 embodiment 11～13 compounded injectivity profile modifying agents
Embodiment 14～16：
The oily sludge that adopted of compounded injectivity profile modifying agents that the present embodiment provides is taken from Gudao area of Shengli Oilfield oil recovery factory, cloudy from
Sub- surfactant is alkyl benzene sulfonate, and Colophonium (heavy oil) is respectively Qinhuangdao AH-90, Gudao area of Shengli Oilfield oil recovery factory surpasses
Viscous crude and hard grades of bitumen, 100 DEG C of viscositys are respectively 2.8Pa.s, 5.9Pa.s and 425Pa.s, and auxiliary agent is sodium carboxymethyl cellulose.
The preparation method of the profile control agent that the present embodiment provides comprises the following steps：
1. take oily sludge according to proportioning, be heated to 80 DEG C standby；
2. auxiliary agent is added to the water, dilution, standby；
3. according to proportioning, surfactant is dissolved in 80 DEG C of water, wiring solution-forming；
4. described Colophonium is made by emulsified asphalt using conventional method；
5. described surfactant solution is added in container and be incubated, add described oily sludge, using high speed shear
Oily sludge is dispersed in soap lye equipment；
6. emulsified asphalt and auxiliary agent are added above-mentioned system and be sufficiently stirred for, be cooled to room temperature, obtain profile control agent finished product.
The profile control agent of above-mentioned preparation is evaluated, in embodiment, using different emulsified asphalts (heavy oil), dispersion is flown to system
Less, dispersion effect is all ideal, and system granularity is low, is uniformly dispersed, and is continuously injected into ability good for performance impact.Embodiment 14～
After in 16, sealing ratiod is respectively 95%, 94% and 97%, and water drive 100PV, sealing ratiod only slightly reduces, and still more than 90%, adjusts
Cut open agent and there is preferable plugging effect.But, the profile control agent being reached the Uintahite gained of 400Pa.s using viscosity is had preferably
Heat resistance, still has more than 95% sealing ratiod under the simulation stratum condition more than 80 DEG C.
The proportion design (percentage by weight, the balance of water of %) of table 5 embodiment 14-16 compounded injectivity profile modifying agents
Colophonium (heavy oil) performance indications used by table 6 embodiment 1-16
Table 7 Colophonium (heavy oil) gained emulsified asphalt (heavy oil) performance indications
Oily sludge used by the present invention is selected from Gudao area of Shengli Oilfield oil recovery factory, related property and granularmetric analyses such as table 8
With 9.
Table 8 is used to be analyzed containing sludge quality
The pure mud of table 9 oily sludge divides granularmetric analyses
Note：D (4,3) is volume average particle size, and D (3,2) is surface area mean diameter, and D50 is 50% particle size range
Above-mentioned detailed description compounded injectivity profile modifying agents and preparation method thereof being carried out with reference to embodiment, be illustrative rather than
Determinate, several embodiments, the therefore change under without departing from present general inventive concept can be included according to limited scope
Change and change, should belong within protection scope of the present invention.
Claims (7)
1. a kind of compounded injectivity profile modifying agents it is characterised in that：In percentage by weight, form including following：Oily sludge：10%～
70%；Emulsified asphalt：1%～20%；Surfactant：1%～5%；Auxiliary agent：0%-1%；The water of surplus；
, at 40-130 DEG C, 100 DEG C of viscositys are in 2～425Pa s for the softening point of Colophonium used by described emulsified asphalt.
2. compounded injectivity profile modifying agents according to claim 1, is characterized in that：Described surfactant is anionic surface activity
One of agent, nonionic surfactant and cationic surface active agent, two or three.
3. compounded injectivity profile modifying agents according to claim 2, is characterized in that：Described anionic surfactant is tall oil sulphur
One or more of hydrochlorate, alkyl sulfonates, alkyl benzene sulfonate, alkylsurfuric acid salt and lignin sulfonate
Combination.
4. compounded injectivity profile modifying agents according to claim 2, is characterized in that：Described nonionic surfactant gathers for alkyl phenol
Oxygen vinyl Ether, aralkyl phenol polyethenoxy ether, polyoxyethylene sorbitan fatty acid ester, sorbitan fatty acid ester and fat
The combination of one or more of fat polyoxyethylenated alcohol.
5. compounded injectivity profile modifying agents according to claim 2, is characterized in that：Described cationic surface active agent is alkyl amine
Cationic surfactant, quaternary cationic surfactant, amidic-salt cationoid surfactant, imidazolines sun
In ionic surface active agent, oxirane Diamines cationic surfactant and wooden amine cation surfactant one
Plant or several combinations.
6. compounded injectivity profile modifying agents according to claim 1, is characterized in that：Described auxiliary agent is calcium salt, strontium salt, waterglass, carboxylic first
Base sodium cellulosate, hydroxyethyl cellulose, polyvinyl alcohol, polyacrylamide, Polyethylene Glycol, polyurethane, guar gum, yellow unit's glue and swollen
The combination of one or more of profit soil.
7. a kind of method preparing compounded injectivity profile modifying agents described in any one of claim 1-6 is it is characterised in that specific step is as follows：
(1) weigh each component according to quantity, oily sludge is heated to room temperature～90 DEG C；
(2) auxiliary agent is added to the water, dilution, standby；
(3) surfactant is dissolved in 40 DEG C～90 DEG C of water, is configured to solution；
(4) surfactant solution is added in container and be incubated, add described oily sludge, stirring, oily sludge is disperseed
In surfactant solution；Afterwards emulsified asphalt and auxiliary agent are added in above-mentioned solution and be sufficiently stirred for, be cooled to room temperature, obtain
To profile control agent finished product.
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| CN105623633B (en) * | 2014-10-31 | 2020-12-01 | 中国石油化工股份有限公司 | Emulsified asphalt profile control water shutoff agent |
| 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 |
| CN104830295B (en) * | 2015-05-08 | 2018-01-05 | 中国石油天然气股份有限公司 | Activating agent for water shutoff and thick oil activating agent for water shutoff prepared from same |
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| 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 |
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| CN106800920B (en) * | 2016-12-28 | 2019-06-11 | 中国石油天然气股份有限公司 | Plugging modifier and preparation method and application thereof |
| CN106833573B (en) * | 2016-12-28 | 2019-05-07 | 中国石油天然气股份有限公司 | Plugging modifier and preparation method and application thereof |
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| 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 |
| 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 |
| CN108929662B (en) * | 2018-08-08 | 2020-12-01 | 陕西友邦石油工程技术有限公司 | Water injection well profile control process for preparing oil-containing sludge plugging agent by using clean carrier fluid |
| CN113548819B (en) * | 2021-04-14 | 2022-12-09 | 新疆大学 | Modified asphalt mastic based on oil sludge pyrolysis residues and preparation method thereof |
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