CN105198187B - A kind of dispersion and processing method containing poly- sludge - Google Patents
A kind of dispersion and processing method containing poly- sludge Download PDFInfo
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- CN105198187B CN105198187B CN201510644209.6A CN201510644209A CN105198187B CN 105198187 B CN105198187 B CN 105198187B CN 201510644209 A CN201510644209 A CN 201510644209A CN 105198187 B CN105198187 B CN 105198187B
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Abstract
The invention discloses a kind of dispersion containing poly- sludge and processing method.The dispersion and processing method, comprise the following steps：1) poly- sludge will be contained and will be configured to suspension with water, then the suspension will be carried out into shear agitation and grinding successively, obtained containing poly- mud granule；2) by step 1) gained mix with polymer solution containing poly- mud granule, sludge dispersant, is stirred, complete described in contain the dispersion of poly- sludge；Wherein, the polymer solution is the aqueous solution of polyacrylamide polymer oil displacement agent.The method is by mechanical shearing and grinding means, by containing poly- mud granule size reduction to the rank matched with stratum duct, make mud granule stable suspersion in polymer solution using polymer solution oneself viscosity and macromolecule dispersing agent, formed can long-time stable it is scattered containing poly- sludge/polymer suspension, had a good application prospect in terms of polymer displacement of reservoir oil and re-injection profile control.
Description
Technical field
The invention belongs to oil field, it is related to a kind of dispersion containing poly- sludge and processing method.
Background technology
Polymer flooding is a kind of important raising recovery efficiency technique, and its principle is to add HMW by water is injected
The oil displacement agents such as polyacrylamide, improve viscosity of injected water, expand swept volume, and the purpose of recovery ratio is improved so as to reach.In original
While oil recovery is significantly improved, note poly- oil field and be also faced with serious greasy filth problem.The generation of polymer-containing oil sludge mainly has two
Individual source：One is, with the increase for returning out polymer concentration, extraction fluid viscosity increases, and causes the silt carried out from stratum
Amount is significantly increased；Two are, the treatment agent such as demulsifier, reverse-phase emulsifier, water cleaning agent added in Produced Liquid processing procedure, can be with
Return out the components such as paraffin and pitch in polymer, crude oil to interact, the highly stable sticky greasy filth of forming properties.
The component of polymer-containing oil sludge is extremely complex, and internal package substantial amounts of crude oil, sewage, organic flco and inorganic mineral
Grain etc., intractability is very big.The processing method of report has much both at home and abroad, and two major classes can be divided into from know-why angle：One
Class is physical method, for example high-temperature process method, ultrasonication method, solvent extraction etc..The B of Chinese patent 102849907 is introduced
A kind of polymer-containing oil sludge ultrasonic processing method and equipment, are a kind of typical physical treatment methods.Another kind of is chemical method, example
Such as chemical cleaning method, electrocure process, biological decomposition method.The A of Chinese patent 103833105 describes a kind of polymer-containing oil sludge chemistry
Separate and crude oil recovery process, be a kind of typical chemical treatment method.In above-mentioned polymer-containing oil sludge processing method, by greasy filth
Crude oil high efficiente callback turn into the emphasis of research, and be directed to the solid phase components after treatment i.e. containing poly- sludge, then less studies have reported that.
Compared with the sludge of conventional water controlled field, the extremely complex containing poly- sludge components of poly- oil field generation is noted, not only included
The inorganic components such as clay, the grains of sand, mechanical admixture, also substantial amounts of organic polymer compositions.The B of Chinese patent 102094616 is introduced
A kind of method for separating cotton-shaped organic matter in polymer-containing oil sludge, from reuniting containing isolating more cotton-shaped organic matter in poly- sludge
Body, the material is interacted by medicaments such as polyacrylamide and demulsifier, water cleaning agents and is formed.The presence of organic polymer flco,
So that the intractability containing poly- sludge is greatly, current land oil field is processed using the method buried or burn mostly, not only
The waste of resource is caused, and secondary pollution can be brought.Such how effectively to be processed and utilized by organic polymer, inorganic mineral
Deng composition containing poly- sludge, can not only turn waste into wealth, environmental protection, and to polymer-containing oil sludge problem on the spot, innoxious solution
It is significant.
The content of the invention
It is an object of the invention to provide a kind of dispersion containing poly- sludge and processing method.
Dispersion containing poly- sludge and processing method that the present invention is provided, comprise the following steps：
1) poly- sludge will be contained and will be configured to suspension with water, then the suspension will be carried out into shear agitation and grinding successively, obtained
To containing poly- mud granule；
2) by step 1) gained mixes with polymer solution containing poly- mud granule, sludge dispersant, is stirred, completion institute
State the dispersion containing poly- sludge；
Wherein, the polymer solution is the aqueous solution of polyacrylamide polymer oil displacement agent.
The step of above method 1) in, the mass ratio containing poly- sludge and water is 1:1~1:5, concretely 1:1~1:
3、1:2.3、1:1.5、1:4；
In the shear agitation step, the speed of shear agitation is 1000~3000rpm, concretely 1500~
2500rpm、2000rpm、3000rpm；
The time of shear agitation is 5~15min, concretely 5~10min, 8min；
Shearing stirrer used by the step can be various conventional high speed machine,massings, can such as be stirred for one or more levels
Device；
In the grinding steps, grinding rate be 3000~6000rpm, concretely 3500~5000rpm, 4000rpm,
4500rpm or 5300rpm；
The time of grinding is 3~10min, concretely 5~8min, 4min or 6min；
Charging rate during grinding is 2~10L/min, concretely 3-6L/min, 4L/min, 8L/min；
The grinder can be various common spherical grinders；
The median particle size containing poly- mud granule be 10~50 μm, concretely 10~35 μm, 19 μm, 21 μm, 23 μm,
25μm、27μm。
The step 2) in, the sludge dispersant is acrylic acid-acrylic acid hydroxypropyl lipin polymer, and number-average molecular weight is
3000~20000, concretely 5000~12000,8000 or 10000；
The polyacrylamide polymer oil displacement agent is linear polymeric mass type, hydrophobic association type, hyper-branched height resist
Salt form or weak crosslinked polyacrylamide are birdsed of the same feather flock together compound oil displacement agent；
The number-average molecular weight of the polyacrylamide polymer oil displacement agent is 1000~30,000,000；
More specifically can be hydrophobically associated polyacrylamide, such as marque is the hydrophobic association type polyacrylamide of AP-P4
Amine, it is commercially available in Sichuan Guangya Polymer Chemical Co., Ltd.；
The concentration of the polymer solution is 1000~2000mg/L, concretely 1200~1800mg/L or 1750mg/
L。
The step 2) in, the mass ratio containing poly- mud granule and the sludge dispersant is 100：1~100：5, specifically
Can be 100：2~100：4、100：2.4 or 100：3.3；
In the whipping step, the speed of stirring is 500~1500rpm, concretely 600~1200rpm, 800rpm,
900rpm, 1000rpm or 1200rpm；
The time of stirring is 10~40min, concretely 20~30min or 25min；
It is described containing poly- mud granule in the step 2) concentration in system is 50~700mg/L, concretely 100~
450mg/L, 150mg/L, 250mg/L, 300mg/L, 400mg/L or 500mg/L.
The step 1) and step 2) carried out at 20-50 DEG C, concretely 24~45 DEG C.
In addition, the step 1) in, described is to be prepared according to the method for comprising the following steps containing poly- sludge：
Polymer-containing oil sludge is mixed with release agent, is staticly settled after stirring, obtain oil reservoir, water layer and mud layer, collecting mud layer is
For described containing poly- sludge.
The release agent can be release agent disclosed in the A of Chinese patent application CN 103833105, concretely by acrylic acid
The aqueous solution of maleic acid, sodium metasilicate, sodium citrate and water composition.
Wherein, the number-average molecular weight of the acrylic acid maleic acid concretely 1800~4000, more specifically can be
1800、2500、3000；
The water can be distilled water, the mineralized water of different salinity compositions, and according to according to oil field mineralized water composition
The simulation mineralized water of preparation, such as concretely K+、Na+、Ca2+、Mg2+、CO3 2-、HCO3 -、SO4 2-、Cl-Constituted with water；
Wherein, the salinity of the mineralized water concretely 3159mg/L；
The concentration of each ion is specific as follows in the mineralized water：K+And Na+Concentration be 1079mg/L, Ca2+Concentration be
7mg/L, Mg2+Concentration be 13mg/L, CO3 2-Concentration be 128mg/L, HCO3 -Concentration be 858mg/L, SO4 2-Concentration be
30mg/L, Cl-Concentration be 1044mg/L.
The mass parts of the acrylic acid maleic acid can be 1-10 parts；
The mass parts of the sodium metasilicate can be 1-15 parts；
The mass parts of the sodium citrate can be 0.5~5 part；
Specifically, the mass ratio of the acrylic acid maleic acid, sodium metasilicate, sodium citrate can be 9：7：0.8、4：1：
5、2：8：0.5、8：2：3、3：7：5 or 1：8：3；
The gross mass of the acrylic acid maleic acid, sodium metasilicate and sodium citrate and the mass ratio of water are 5~40：
100, concretely 5：100、10：100、20：100、30：100.The release agent is alternatively other can be by polymer-containing oil sludge
The medicament that oil, water, mud are separate.
In addition, using the above method prepare it is scattered containing poly- sludge/Properties of Suspensions Polymeric Systems and the system poly-
Application in the compound displacement of reservoir oil and/or re-injection profile control, falls within protection scope of the present invention.
What the present invention was provided disperses and processing method containing poly- sludge, by mechanical shearing and grinding means, will contain poly- sludge
Particle size is reduced to the rank matched with stratum duct, using polymer solution viscosity and add a small amount of macromolecule
Dispersant makes mud granule stable suspersion in polymer solution, formed can long-time stable dispersion, there is no aggregate and precipitate
Sludge/polymer suspension.The method that the present invention is provided has the following advantages that：The appropriate addition of mud granule is to a certain extent
Improve the viscosity of polymer solution；There is good compatibility containing poly- sludge and stratum, and sludge returning is adjustable, re-injection
Behind stratum mud granule can macropore plugging, play profile control.Therefore, the suspension system that prepared by the method in polymer displacement of reservoir oil and
Re-injection profile control aspect has a good application prospect.
Brief description of the drawings
Fig. 1 is the effect photo after polymer-containing oil sludge and separation, and upper, middle and lower layer is respectively：Crude oil, sewage and sludge.
Fig. 2 is the deployment conditions photo in a polymer solution containing poly- mud granule in embodiment 1~6.
Specific embodiment
With reference to specific embodiment, the present invention will be further described, but the present invention is not limited to following examples.
Experimental technique used in following embodiments is conventional method unless otherwise specified.
Material used, reagent etc. in following embodiments, unless otherwise specified, commercially obtain.
In the present invention polymer-containing oil sludge refer to oil field development production in produce multicomponent mixture, including crude oil, sewage,
Inorganic component (such as soil, the grains of sand, mechanical admixture), organic polymer compositions (such as polymer, demulsifier, water cleaning agent and its phase
Organic floccule that interaction is formed etc.)；It is to remove crude oil phase, sewage phase after referring exclusively to the separated step of polymer-containing oil sludge containing poly- sludge
Solid phase components, including above-mentioned inorganic component and organic polymer compositions etc..
Polymer-containing oil sludge used by following examples is the polymer-containing oil sludge of Area of Bohai oil field output, is by weight/mass percentage composition
45%~55% water, the crude oil of weight/mass percentage composition 15%~35% and other solid constituent (silt, residual polyalcohol, oil
Water treatment agent, mechanical admixture, bacterium etc.) composition.
Mineralized water used is the mineralized water in corresponding oil field, salinity 3159mg/L, K+And Na+Concentration be 1079mg/L,
Ca2+Concentration be 7mg/L, Mg2+Concentration be 13mg/L, CO3 2-Concentration be 128mg/L, HCO3 -Concentration be 858mg/L,
SO4 2-Concentration be 30mg/L, Cl-Concentration be 1044mg/L.
Without specified otherwise, experimental temperature is 24 DEG C of room temperature to following examples；
Sludge dispersant used, i.e. acrylic acid-acrylic acid hydroxypropyl lipin polymer, buy in the calm and peaceful water process science and technology in Shandong
Company, marque is TH-613；
Polyacrylamide polymer oil displacement agent used is hydrophobically associated polyacrylamide, is bought in the sub- polymerization of Sichuan light
Thing Chemical Co., Ltd., marque is AP-P4, and number-average molecular weight is 1000~20,000,000；
Sludge returning intermediate value after high speed shear and grinding, (Malvern is detected using laser particle analyzer
Mastersizer2000)；
Using Brookfield rotation viscometers test (No. 0 rotor), test temperature is 65 DEG C to polymer solution viscosity.
Embodiment 1,
(1) separation of polymer-containing oil sludge
By acrylic acid maleic acid, sodium metasilicate and sodium citrate in mass ratio 1 that number-average molecular weight is 2000:8:3
It is dissolved in mineralized water, obtains the release agent that weight/mass percentage composition is 20%.
1kg polymer-containing oil sludge samples are weighed in beaker, the release agent of the above-mentioned preparations of 1L is added, thermostat water bath is placed on
70 DEG C are inside warming up to, constant temperature stirs 30min, and mixing speed is 600rpm.It is poured into afterwards in sedimentation separation bottle, it is dry in 70 DEG C
It is incubated in dry case and stands 30min.Taken out after half an hour, sample is presented obvious " oil, water, mud " three-phase layering (see accompanying drawing 1), on
Layer is the oil reservoir of black, middle level for sewage layer, lower floor are containing poly- sludge blanket.Filter, isolate lower floor and be placed in doing containing poly- sludge
Dried in dry case, weigh about 53g, as subsequent experimental containing poly- mud sample.
(2) shearing and grinding containing poly- sludge
Take 50g it is above-mentioned it is dry containing poly- mud sample in beaker, add 200g water, be configured to the water of mass concentration 20%
Solution.Using high speed machine,massing, shear agitation is carried out to the sludge aqueous solution, mixing speed is set as 1500rpm, stirred
Be well mixed after about 10min, the less sludge aqueous solution of particle.Afterwards, the solution is placed in into high-speed dome grinder to enter
Row grinding, grinding rate 3500rpm, charging rate is 3L/min, speed lapping about 5min.Detected using particle size analyzer, after grinding
Containing 28 μm of poly- sludge returning intermediate value.
(3) containing the dispersion of poly- sludge
5g polymer solids are weighed, is added in 1L mineralized waters, be configured to the polymer mother liquor of 5000mg/L.Take the polymerization
Thing mother liquor 500mL, is diluted with water to 1750mg/L, and it is 124mPas to use viscosimeter to determine viscosity.
Take after the above-mentioned grindings of 0.5g containing poly- mud granule (mass concentration 20%) and 0.01g sludge dispersant (molecular weight
5000), it is added in the solution (concentration 1750mg/L) of 1L polymer, containing poly- mud granule in the system (by containing poly- sludge
Grain, the system of the solution composition of sludge dispersant and polymer) in concentration be 100mg/L.The solution system is carried out at a high speed
Stirring, mixing speed is 600rpm.Sludge/the Properties of Suspensions Polymeric Systems stablized after stirring 30min, is determined using viscosimeter
Viscosity is 133mPas at 65 DEG C.
Embodiment 2,
(1) separation of polymer-containing oil sludge
The step of according to embodiment 1 (1), release agent used is only replaced with into obtained release agent as follows：
By acrylic acid maleic acid, sodium metasilicate and sodium citrate in mass ratio 3 that number-average molecular weight is 1800:7:5
It is dissolved in mineralized water, obtains the release agent that weight/mass percentage composition is 30%.
(2) shearing and grinding containing poly- sludge
Take 50g it is above-mentioned it is dry containing poly- mud sample in beaker, add 200g water, be configured to the water of mass concentration 20%
Solution.Using high speed machine,massing, shear agitation is carried out to the sludge aqueous solution, mixing speed is set as 2000rpm, stirred
Be well mixed after about 8min, the less sludge aqueous solution of particle.Afterwards, the solution is placed in into high-speed dome grinder is carried out
Grinding, grinding rate 4000rpm, charging rate is 2L/min, speed lapping about 5min.Detected using particle size analyzer, after grinding
Containing 19 μm of poly- sludge returning intermediate value.
(3) containing the dispersion of poly- sludge
Concentration is the polymer solution of 5000mg/L and 1750mg/L, and compound method is determined with embodiment 1 using viscosimeter
Viscosity is 124mPas.
Take after the above-mentioned grindings of 0.75g containing poly- mud granule (mass concentration 20%) and 0.005g sludge dispersant (molecules
8000) amount, is added in the solution (concentration 1750mg/L) of 1L polymer, containing poly- mud granule in the system (by containing poly- sludge
The system of the solution composition of particle, sludge dispersant and polymer) in concentration be 150mg/L.Height is carried out to the solution system
Speed stirring, mixing speed is 800rpm.Sludge/the Properties of Suspensions Polymeric Systems stablized after stirring 30min, is measured using viscosity
Viscosity is 139mPas at fixed 65 DEG C.
Embodiment 3,
(1) separation of polymer-containing oil sludge
The step of according to embodiment 1 (1), release agent used is only replaced with into obtained release agent as follows：
By acrylic acid maleic acid, sodium metasilicate and sodium citrate in mass ratio 8 that number-average molecular weight is 2500:2:3
It is dissolved in mineralized water, obtains the release agent that weight/mass percentage composition is 20%.
(2) shearing and grinding containing poly- sludge
Take 50g it is above-mentioned it is dry containing poly- mud sample in beaker, add 150g water, be configured to the water of mass concentration 25%
Solution.Using high speed machine,massing, shear agitation is carried out to the sludge aqueous solution, mixing speed is set as 2000rpm, stirred
Be well mixed after about 10min, the less sludge aqueous solution of particle.Afterwards, the solution is placed in into high-speed dome grinder to enter
Row grinding, grinding rate 4500rpm, charging rate is 4L/min, speed lapping about 5min.Detected using particle size analyzer, after grinding
Containing 23 μm of poly- sludge returning intermediate value.
(3) containing the dispersion of poly- sludge
Concentration is the polymer solution of 5000mg/L and 1750mg/L, and compound method is determined with embodiment 1 using viscosimeter
Viscosity is 124mPas.
Take after the above-mentioned grindings of 1g containing poly- mud granule (mass concentration 25%) and 0.03g sludge dispersant (molecular weight
8000), it is added in 1L dilute polymers (concentration 1750mg/L), containing poly- mud granule in the system (by containing poly- sludge
Grain, the system of the solution composition of sludge dispersant and polymer) in concentration be 250mg/L.The solution system is carried out at a high speed
Stirring, mixing speed is 1000rpm.Sludge/the Properties of Suspensions Polymeric Systems stablized after stirring 20min, is measured using viscosity
Viscosity is 144mPas at fixed 65 DEG C.
Embodiment 4,
(1) separation of polymer-containing oil sludge
The step of according to embodiment 1 (1), release agent used is only replaced with into obtained release agent as follows：
By acrylic acid maleic acid, sodium metasilicate and sodium citrate in mass ratio 2 that number-average molecular weight is 3000:8:
0.5 is dissolved in mineralized water, obtains the release agent that weight/mass percentage composition is 10%.
(2) shearing and grinding containing poly- sludge
Take 90g it is above-mentioned it is dry containing poly- mud sample in beaker, add 210g water, be configured to the water of mass concentration 30%
Solution.Using high speed machine,massing, shear agitation is carried out to the sludge aqueous solution, mixing speed is set as 2300rpm, stirred
Be well mixed after about 15min, the less sludge aqueous solution of particle.Afterwards, the solution is placed in into high-speed dome grinder to enter
Row grinding, grinding rate 4000rpm, charging rate is 5L/min, speed lapping about 6min.Detected using particle size analyzer, after grinding
Containing 21 μm of poly- sludge returning intermediate value.
(3) containing the dispersion of poly- sludge
Concentration is the polymer solution of 5000mg/L and 1750mg/L, and compound method is determined with embodiment 1 using viscosimeter
Viscosity is 124mPas.
Take after the above-mentioned grindings of 1g containing poly- mud granule (mass concentration 30%) and 0.04g sludge dispersant (molecular weight
10000), it is added in the solution (concentration 1750mg/L) of 1L polymer, containing poly- mud granule in the system (by containing poly- sludge
Grain, the system of the solution composition of sludge dispersant and polymer) in concentration be 300mg/L.The solution system is carried out at a high speed
Stirring, mixing speed is 900rpm.Sludge/the Properties of Suspensions Polymeric Systems stablized after stirring 25min, is determined using viscosimeter
Viscosity is 145mPas at 65 DEG C.
Embodiment 5,
(1) separation of polymer-containing oil sludge
The step of according to embodiment 1 (1), release agent used is only replaced with into obtained release agent as follows：
By acrylic acid maleic acid, sodium metasilicate and sodium citrate in mass ratio 4 that number-average molecular weight is 4000:1:5
It is dissolved in mineralized water, obtains the release agent that weight/mass percentage composition is 5%.
(2) shearing and grinding containing poly- sludge
Take 80g it is above-mentioned it is dry containing poly- mud sample in beaker, add 120g water, be configured to the water of mass concentration 40%
Solution.Using high speed machine,massing, shear agitation is carried out to the sludge aqueous solution, mixing speed is set as 2500rpm, stirred
Be well mixed after about 10min, the less sludge aqueous solution of particle.Afterwards, the solution is placed in into high-speed dome grinder to enter
Row grinding, grinding rate 4500rpm, charging rate is 4L/min, speed lapping about 8min.Detected using particle size analyzer, after grinding
Containing 25 μm of poly- sludge returning intermediate value.
(3) containing the dispersion of poly- sludge
Concentration is the polymer solution of 5000mg/L and 1750mg/L, and compound method is determined with embodiment 1 using viscosimeter
Viscosity is 124mPas.
Take after the above-mentioned grindings of 1g containing poly- mud granule (mass concentration 40%) and 0.05g sludge dispersant (molecular weight
10000), it is added in the solution (concentration 1750mg/L) of 1L polymer, containing poly- mud granule in the system (by containing poly- sludge
Grain, the system of the solution composition of sludge dispersant and polymer) in concentration be 400mg/L.The solution system is carried out at a high speed
Stirring, mixing speed is 1200rpm.Sludge/the Properties of Suspensions Polymeric Systems stablized after stirring 30min, is measured using viscosity
Viscosity is 156mPas at fixed 65 DEG C.
Embodiment 6,
(1) separation of polymer-containing oil sludge
The step of according to embodiment 1 (1), release agent used is only replaced with into obtained release agent as follows：
By acrylic acid maleic acid, sodium metasilicate and sodium citrate in mass ratio 9 that number-average molecular weight is 3000:7:
0.8 is dissolved in mineralized water, obtains the release agent that weight/mass percentage composition is 5%.
(2) shearing and grinding containing poly- sludge
Take 50g it is above-mentioned it is dry containing poly- mud sample in beaker, add 50g water, be configured to the water of mass concentration 50%
Solution.Using high speed machine,massing, shear agitation is carried out to the sludge aqueous solution, mixing speed is set as 3000rpm, stirred
Be well mixed after about 10min, the less sludge aqueous solution of particle.Afterwards, the solution is placed in into high-speed dome grinder to enter
Row grinding, grinding rate 5500rpm, charging rate is 6L/min, speed lapping about 10min.Detected using particle size analyzer, after grinding
Containing 27 μm of poly- sludge returning intermediate value.
(3) containing the dispersion of poly- sludge
Concentration is the polymer solution of 5000mg/L and 1750mg/L, and compound method is determined with embodiment 1 using viscosimeter
Viscosity is 124mPas.
Take after the above-mentioned grindings of 1g containing poly- mud granule (mass concentration 50%) and 0.05g sludge dispersant (molecular weight
15000), it is added in the solution (concentration 1750mg/L) of 1L polymer, containing poly- mud granule in the system (by containing poly- sludge
Grain, the system of the solution composition of sludge dispersant and polymer) in concentration be 500mg/L.The solution system is carried out at a high speed
Stirring, mixing speed is 1500rpm.Sludge/the Properties of Suspensions Polymeric Systems stablized after stirring 30min, is measured using viscosity
Viscosity is 162mPas at fixed 65 DEG C.
Table 1 is the parameters containing poly- sludge/polymer aaerosol solution of different sludge contents.As can be seen from the table,
With the increase containing poly- sludge solid content, the viscosity of polymer solution is in gradually increase tendency.The polymer solution of blank
(1750mg/L), that is, do not add containing poly- mud granule, and solution viscosity is 124mPas；Concentration is added to rise to containing poly- mud granule
During 500mg/L, the viscosity of polymer solution increases to 162mPas.Thus illustrate, the addition containing poly- sludge is to a certain extent
The viscosity of polymer solution is improve, this increases aqueous viscosity after being conducive to polymer solution injection stratum, expands swept volume,
So as to improve oil displacement efficiency.
Accompanying drawing 1 is that polymer-containing oil sludge is processed through greasy filth release agent at 70 DEG C, and sample is presented obvious " oil, water, mud " three-phase
Layering, upper strata is the oil reservoir of black, middle level for sewage layer, lower floor are containing poly- sludge blanket.
Accompanying drawing 2 is 10 days deployment conditions (65 afterwards in polymer solution (concentration 1750mg/L) containing poly- mud granule
At DEG C), from left to right it is followed successively by embodiment 1~6 and blank sample (not adding the polymer solution containing poly- sludge).Can be with from figure
Find out, at 65 DEG C of simulated formation temperature, be still homogeneously dispersed in polymer solution afterwards at ten days containing poly- sludge, not
There are the phenomenons such as obvious aggregation, precipitation.Thus illustrate, by the viscosity of polymer solution itself, and the macromolecule for adding
Sludge dispersant, can be dispersed stably in polymer solution containing poly- mud granule, and good dispersion stabilization is also containing poly-
Sludge concomitant polymerization thing solution together injects stratum, so as to play the thickening displacement of reservoir oil, the effect of plugging and profile con-trol lay a good foundation.
The parameter containing poly- sludge/polymer suspension of table 1, different sludge contents
| Containing poly- sludge | Solid content/ppm | Median particle size/μm | Viscosity/mPas |
| Blank sample | 0 | 0 | 124 |
| Embodiment 1 | 100 | 28 | 133 |
| Embodiment 2 | 150 | 19 | 139 |
| Embodiment 3 | 200 | 23 | 144 |
| Embodiment 4 | 300 | 21 | 145 |
| Embodiment 5 | 400 | 25 | 156 |
| Embodiment 6 | 500 | 27 | 162 |
Claims (8)
1. a kind of process for dispersing containing poly- sludge, comprises the following steps：
1) poly- sludge will be contained and will be configured to suspension with water, then the suspension will be carried out into shear agitation and grinding successively, be contained
Poly- mud granule；
The step 1) in, in the shear agitation step, the speed of shear agitation is 1000~3000rpm；Shear agitation
Time is 5~15min；
In the grinding steps, grinding rate is 3000~6000rpm；The time of grinding is 3~10min；
Described is to be prepared according to the method for comprising the following steps containing poly- sludge：
Polymer-containing oil sludge is mixed with release agent, is staticly settled after stirring, obtain oil reservoir, water layer and mud layer, collected mud layer and be institute
State containing poly- sludge；
The release agent is the aqueous solution being made up of acrylic acid maleic acid, sodium metasilicate, sodium citrate and water；
The mass parts of the acrylic acid maleic acid are 1-10 parts；
The mass parts of the sodium metasilicate are 1-15 parts；
The mass parts of the sodium citrate are 0.5~5 part；
The gross mass of the acrylic acid maleic acid, sodium metasilicate and sodium citrate and the mass ratio of water are 5~40：100；
2) by step 1) gained mixes with polymer solution containing poly- mud granule, sludge dispersant, is stirred, contain described in completion
The dispersion of poly- sludge；
Wherein, the polymer solution is the aqueous solution of polyacrylamide polymer oil displacement agent；
The sludge dispersant is acrylic acid-acrylic acid hydroxypropyl lipin polymer, and number-average molecular weight is 3000~20000；
The step 2) in, in the whipping step, the speed of stirring is 500~1500rpm；The time of stirring be 10~
40min；
It is described containing poly- mud granule in the step 2) concentration in system is 50~700mg/L.
2. method according to claim 1, it is characterised in that：The step 1) in, the quality containing poly- sludge Yu water
Than being 1:1~1:5；
Charging rate during grinding is 2~10L/min；
The median particle size containing poly- mud granule is 10~50 μm.
3. method according to claim 1 and 2, it is characterised in that：The step 2) in, the polyacrylamide Type of Collective
Thing oil displacement agent is birdsed of the same feather flock together for linear polymeric mass type, hydrophobic association type, hyper-branched high capability of anti-salt type or weak crosslinked polyacrylamide
Compound oil displacement agent；
The number-average molecular weight of the polyacrylamide polymer oil displacement agent is 1000~30,000,000；
The concentration of the polymer solution is 1000~2000mg/L.
4. method according to claim 1 and 2, it is characterised in that：The step 2) in, containing poly- mud granule and the dirt
The mass ratio of cement dispersant is 100：1~100：5.
5. method according to claim 1 and 2, it is characterised in that：The step 1) and step 2) at 20~50 DEG C
Carry out.
6. method according to claim 1, it is characterised in that：The number-average molecular weight of the acrylic acid maleic acid is
1800~4000.
7. in claim 1-6 any methods described prepare it is scattered containing poly- sludge/Properties of Suspensions Polymeric Systems.
8. the application in polymer displacement of reservoir oil and/or re-injection profile control containing poly- sludge/Properties of Suspensions Polymeric Systems described in claim 7.
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| CN106433591A (en) * | 2016-08-30 | 2017-02-22 | 陕西海山能源发展有限公司 | Binary-gel-reconstruction-oily-sludge combined with microorganisms profile control and displacement technology |
| CN106396305B (en) * | 2016-09-07 | 2019-05-28 | 中海石油(中国)有限公司 | A kind of analogy method of oil field viscosity polymer-containing oil sludge |
| CN108587592A (en) * | 2017-12-27 | 2018-09-28 | 长江大学 | Keep residual polymer stability composition and application in poly- drive water exit |
| CN110204175A (en) * | 2019-05-28 | 2019-09-06 | 中国海洋石油集团有限公司 | A kind of new method dissolving polymer-containing oil sludge in polymer-bearing waste-water processing system |
| CN110776889B (en) * | 2019-10-30 | 2022-01-21 | 中国石油化工股份有限公司 | Polymer-containing oil sludge emulsification profile control system and preparation method thereof |
| CN111841408A (en) * | 2020-07-20 | 2020-10-30 | 中国海洋石油集团有限公司 | Pulping method containing polymer-containing oil sludge |
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