CN106007296B - A kind of processing method of oily sludge - Google Patents
A kind of processing method of oily sludge Download PDFInfo
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- CN106007296B CN106007296B CN201610585854.XA CN201610585854A CN106007296B CN 106007296 B CN106007296 B CN 106007296B CN 201610585854 A CN201610585854 A CN 201610585854A CN 106007296 B CN106007296 B CN 106007296B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/002—Sludge treatment using liquids immiscible with water
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Abstract
The present invention provides a kind of processing method of oily sludge, specific steps are as follows: takes out oily sludge to be processed, diesel oil, dispersing agent and water in proportion；The diesel oil of proportional quantities in step 1 will be added in the oily sludge to be processed taken out in proportion in step 1, stirs and be allowed to gradually become flowable state；After the completion of step 2, the dispersing agent and water of proportional quantities in step 1 will be sequentially added in oily sludge after mixing evenly, and stir evenly, so that its entire state forms stable emulsion, and measure its viscosity, so that its viscosity is less than 25mPas；After completing step 3, by treated, oily sludge is stand-by.The present invention is using Changqing oilfields oily sludge as primary raw material, it is handled, its is low in cost, oily sludge is emulsified into uniform, stable cream by the dispersing agent being added in the present invention, the method of processing oily sludge of the invention, raw material sources are wide, and preparation is simple, provide a new technical ability deposit for oilfield treatments oily sludge.
Description
Technical field
The present invention relates to a kind of processing methods of oily sludge, belong to oily sludge profile control technique field.
Background technique
Foreign countries have begun to the treatment research of oily sludge from the beginning of the seventies, since the eighties in last century, developed country
Contained Mud Treatment Technology obtained developing quickly.Foreign countries are more fully having studied about oily sludge composition, structure
And its characteristic, and special experimental study is carried out with advanced test method and testing equipment, have developed having for a variety of rows
The disposal of oily sludge new process of effect.From the disposition to oily sludge, foreign countries are to oily sludge Treatment process
Research is carried out relatively early, especially the American-European countries such as the U.S., Denmark, Holland, Canada, art process technologies comparative maturity.
Oneself is listed in dangerous solid waste to Sludge in Oilfields, asks if dealing with improperly and serious environmental pollution can occur
Topic, the organic pollutant contained has very high harm to human body and environment, and has gradually caused the highest attention of people.State
The interior theoretical research to disposal of oily sludge is started late, comprehensive treatment technique and horizontal upper and developed country in oily sludge
There is certain gap, disposal of oily sludge is all for the purpose of stabilisation, minimizing, innoxious and recycling.China is also each
Carry out contained Mud Treatment Technology, active protection oilfield environment in oil field.Due to each Sludge in Oilfields type and oilfield environment
The measure of difference, the processing oily sludge that current each oil field is taken also is not quite similar.However, domestic other several elephants all exist
The various problems such as method for mass efficient processing oily sludge of starting late, lack.Although each oil field domestic in recent years is containing
Have developed rapidly on greasy dirt processing technique, however, due to the immature and limitation of various new technologies, the processing of oily sludge according to
It is so the problem in domestic each oil field.
It is that the technology of recycling treatment is carried out to oily sludge by the technology that profile control agent is made in oily sludge.Due to containing greasy dirt
Mud component in mud containing high level, the stability of system is destroyed after mixing with water, lamination easily occurs.Therefore it is
Enable to the suspension time of solid particle in system to increase, need to be added into system suspending agent appropriate, dispersing agent and
Oily sludge is emulsified into uniform, stable cream by stabilizer, to extend the validity period of profile control agent, improves envelope
Stifled effect.Oily sludge base profile modificator is mainly used in oil-field flooding, profile control agent originally stable suspension system after injecting stratum,
Encounter water flooding washes away dilution and the suction-operated of formation rock, and system is decomposed.Shale and other heavy constituents in system
It interacts agglomerating and is deposited in duct, form blocking in high permeability zone by constantly settling, force injection water
Stream flows to less permeable layer, thus improves the swept volume of injection water, and has obtained good profile control effect.Pass through current technology
Means can be such that it selectively only blocks to high permeability zone in oily sludge after injecting stratum.This measure is not only protected
It has protected middle less permeable layer not to be contaminated, while also having achieved the purpose that oily sludge resource utilization and having improved recovery ratio.
Oily sludge refers to the stratum soil or clay for being mixed into crude oil or other product oils, and crude oil and product oil are not
It can directly be recycled and become waste, earth's surface and surrounding enviroment are polluted.Oily sludge particle surface is aqueous, leads
It causes to assemble difficulty between particle and particle, but since the attracting effect of repelling each other occurs between the particles with positive and negative different electrical property, and makes
The state for the system of obtaining tends towards stability.Oily sludge complicated composition, wherein containing multiple additives and a large amount of benzene, phenol, anthracene, pyrene
Etc. harmful substances, these harmful substances have stench, it is very big to environmental hazard.Make the constructions such as being exploited, being transported to crude oil
Generated oily sludge in industry has become one of main waste and the pollution source in oil field, and handles it
Difficulty is big and the feature at high cost of processing also determines that it is a great problem for influencing oil field production and surrounding enviroment quality.
The study found that part oily sludge has recyclable the characteristics of recycling, this can not only reduce oily sludge as pollution sources
Discharge, and the energy again using having certain economic benefit.Therefore, to the development one of the processing technique of oily sludge
It is directly the hot spot of concern, correlative study is extremely urgent.
Summary of the invention
In order to overcome the problems, such as that existing disposal of oily sludge is improper and pollute environment, the present invention provides a kind of containing greasy dirt
The processing method of mud, this method raw material sources are wide, and preparation is simple, and pumping viscosity reaches requirement, can provide to oily sludge
Sourceization utilizes, and using the compounding product of two kinds of oil soluble surfactants as dispersing agent, which is easy to make solid this method
Body paste oily sludge reaches the viscosity requirement of site pumping, is allowed to be readily injected into.
The technical method that the present invention uses are as follows:
A kind of processing method of oily sludge, specific steps are as follows:
Step 1 takes out oily sludge to be processed, diesel oil, dispersing agent and water in proportion；
The bavin of proportional quantities in step 1 will be added in step 2 in the oily sludge to be processed taken out in proportion in step 1
Oil stirs and is allowed to gradually become flowable state；
After the completion of step 3 step 2, point of proportional quantities in step 1 will be sequentially added in oily sludge after mixing evenly
Powder and water, and stir evenly, so that its entire state forms stable emulsion, and its viscosity is measured, so that its viscosity is small
In 25mPas；
After step 4 completes step 3, by treated, oily sludge is stand-by.
The oily sludge, diesel oil, dispersing agent and water proportionally carry out above-mentioned steps processing, the quality percentage of ratio
Than are as follows:
Oily sludge 20-30%
Diesel oil 30-40%
Dispersing agent 5-15%
Remaining is water.
The mass percent of the oily sludge to be processed of the taking-up, diesel oil, dispersing agent and water ratio are as follows:
Oily sludge 25%
Diesel oil 35%
Dispersing agent 10%
Water 30%.
The diesel oil is 0# diesel oil.
The dispersing agent is the compound surfactant of polysorbate60 and emulsifier op-10, the polysorbate60 and emulsification
The ratio of agent OP-10 is 1:4.
Its oil content of the oily sludge is 20-30%.
The concentration of the dispersing agent is 0.1% -0.5%.
By HAAKE RS600 type rheometer come viscosimetric in the step 3.
The invention has the benefit that
A kind of processing method of oily sludge involved in the present invention, wherein the dispersing agent used is that two kinds of oil soluble surfaces are living
The compounding product of property agent, the dispersing agent dispersion effect is good, and the viscosity for being easy that solid paste oily sludge is made to reach site pumping is wanted
It asks, is allowed to be readily injected into.And oily sludge source is wide, process for treating oil-containing sludge provided by the invention, raw material sources are wide, system
It is standby simple, resource utilization can be carried out to oily sludge.
It is further detailed below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is the viscosity of oily sludge with the change curve of Determination of Diesel Oil.
Fig. 2 is the viscosity of oily sludge with the change curve of oily sludge carrying amount.
Fig. 3 is change curve of the viscosity containing greasy dirt treated oily sludge with crude content.
Fig. 4 is the curve graph of the volume number of injection pressure and injection fluid.
Specific embodiment
Embodiment 1:
In order to overcome the problems, such as that existing disposal of oily sludge is improper and pollution environment, the present invention provide a kind of oily sludge
Processing method, the raw material sources of this method are wide, and preparation is simple, and pumping viscosity reaches requirement, can provide to oily sludge
Sourceization utilizes, and using the compounding product of two kinds of oil soluble surfactants as dispersing agent, which is easy to make solid this method
Body paste oily sludge reaches the viscosity requirement of site pumping, is allowed to be readily injected into.
A kind of processing method of oily sludge, specific steps are as follows:
Step 1 takes out oily sludge to be processed, diesel oil, dispersing agent and water in proportion；
The bavin of proportional quantities in step 1 will be added in step 2 in the oily sludge to be processed taken out in proportion in step 1
Oil stirs and is allowed to gradually become flowable state；
After the completion of step 3 step 2, point of proportional quantities in step 1 will be sequentially added in oily sludge after mixing evenly
Powder and water, and stir evenly, so that its entire state forms stable emulsion, and its viscosity is measured, so that its viscosity is small
In 25mPas；
After step 4 completes step 3, by treated, oily sludge is stand-by.
The generated oily sludge in the construction operation exploited, transported to crude oil, has become the main of oil field
One of waste and pollution source, and the difficulty that is handled it is big and the feature at high cost of processing also determines that it is
Influence a great problem of oil field production and surrounding enviroment quality.The present invention is in the construction operation of oil extraction, transport, crude oil
This oily sludge that can not be handled can be generated in tank bottom in operational process in pipeline, the present invention takes out these oily sludges
Same diesel oil, dispersing agent and water by a certain percentage are mixed into the solution that viscosity is lower than 25mPas, inject stratum, close in this way
Reason has handled oily sludge, it is therefore prevented that the pollution of environment.Its technical process is simple simultaneously, and stirring is stirred just with blender
Row, blender is that market is existing, will no longer carry out detailed narration in the present invention.
The present invention is handled it using Changqing oilfields oily sludge as primary raw material, and treatment process is simple, stablizes
Property is good, viscosity is low, low in cost.Oily sludge is handled, it is preferred that emphasis is oily sludge is made to form stable emulsion.For
Enable to the suspension time of solid particle in system to increase, the dispersing agent of addition by oily sludge be emulsified into it is uniform, stablize
Cream, so that the injection efficiency of enhancing treated oily sludge, improves plugging effect.
Embodiment 2:
The oily sludge, diesel oil, dispersing agent and water proportionally carry out above-mentioned steps processing, the quality percentage of ratio
Than are as follows:
Oily sludge 20-30%
Diesel oil 30-40%
Dispersing agent 5-15%
Remaining is water.
The diesel oil is 0# diesel oil.
The dispersing agent is the compound surfactant of polysorbate60 and emulsifier op-10, the polysorbate60 and emulsification
The ratio of agent OP-10 is 1:4.
Its oil content of the oily sludge is 20-30%.
Oily sludge refers to the stratum soil or clay for being mixed into crude oil or other product oils, and crude oil and product oil are not
It can directly be recycled and become waste, earth's surface and surrounding enviroment are polluted.Oily sludge particle surface is aqueous, leads
It causes to assemble difficulty between particle and particle, but since the attracting effect of repelling each other occurs between the particles with positive and negative different electrical property, and makes
The state for the system of obtaining tends towards stability.Oily sludge complicated composition, wherein containing multiple additives and a large amount of benzene, phenol, anthracene, pyrene
Etc. harmful substances, these harmful substances have stench, it is very big to environmental hazard.Make the constructions such as being exploited, being transported to crude oil
Generated oily sludge in industry has become one of main waste and the pollution source in oil field, and handles it
Difficulty is big and the feature at high cost of processing also determines that it is a great problem for influencing oil field production and surrounding enviroment quality.
Treated in step 4 in the present invention, and oily sludge can inject stratum, for future use, while pass through subsequent processing,
Mixing diesel oil used can be adopted up by DP technology from ground end, reuse.
The present invention is handled it using Changqing oilfields oily sludge as primary raw material, and treatment process is simple, stablizes
Property is good, viscosity is low, low in cost.Diesel oil can be reused as raw material.Oily sludge is handled, it is preferred that emphasis is make to contain
Greasy dirt forms stable emulsion.In order to increase the suspension time of solid particle in system, the dispersing agent of addition
Oily sludge is emulsified into uniform, stable cream, so that the injection efficiency of enhancing treated oily sludge, is improved
Plugging effect.
Embodiment 3:
On the basis of embodiment 1, the oily sludge to be processed of taking-up described in the present embodiment, diesel oil, dispersing agent with
The mass percent of water ratio are as follows:
Oily sludge 25%
Diesel oil 35%
Dispersing agent 10%
Water 30%.
The diesel oil is 0# diesel oil.The dispersing agent is the compound surfactant of polysorbate60 and emulsifier op-10,
The ratio of the polysorbate60 and emulsifier op-10 is 1:4.
The concentration of the dispersing agent is 0.1% -0.5%.In the step 3 by HAAKE RS600 type rheometer come
Viscosimetric.
Wherein, the diesel oil is 0# diesel oil, and dispersing agent is the compound surfactant of polysorbate60 and emulsifier op-10.Cause
It is water-in-oil type surfactant for both surfactants, so bavin should be dissolved in when preparing the compound surfactant
Oil is prepared, and the HLB value of the compound surfactant is 5.Determination of Diesel Oil is 20%, and the concentration of dispersing agent is 0.1% -0.5%.
According to the formula, the dissolution time of oily sludge at normal temperature is less than 30min, and oily sludge viscosity is 23.09mPas, reaches
Changqing oilfields ground pumping requirements.
At normal temperature, the oily sludge that this method is handled dissolves substantially in 0.5h.In order to be contained well
The processing of greasy dirt requires pumpability of the profile control system in injection process good first, according to Changqing oilfields ground pumping requirements,
Viscosity control be preferred within 25mPas, but specifically by on-site actual situations depending on.Therefore by oil-containing under different condition
The measurement of sewage sludge viscosity.The present embodiment is with HAAKE RS600 type rheometer come viscosimetric.
When dispersant concentration is 0.05%, there is part oily sludge that cannot disperse, and just has silt heavy at normal temperature
Drop；When dispersant concentration is 0.1% and 0.5%, all oily sludges are evenly dispersed in the solution, at normal temperature, the oil-containing
Sludge solutions are more stable, do not disperse substantially, therefore testing selected surfactant concentration ranges is 0.1%-0.5%.Because
Diesel oil, which is first added, makes oily sludge solid paste become flow regime, therefore examines or check influence of the Determination of Diesel Oil to viscosity, by Fig. 1 institute
Show, when Determination of Diesel Oil is 15%, the viscosity of oily sludge is 54.66mPas, when Determination of Diesel Oil is 20%, oily sludge
Viscosity be 23.09mPas, meet pumping conditions.When the bigger oily sludge solution of oil content is more stable, left side oil content is
10% oily sludge solution, with regard to water-oil separating, therefore selects Determination of Diesel Oil for 20% in 2h.
Fig. 2 is influence of the oily sludge carrying amount to oily sludge viscosity after processing, as shown in the figure, in normal temperature condition
Under, when oily sludge concentration is less than 30%, viscosity is in 25mPas or so；When oily sludge concentration is greater than 30%, viscosity is aobvious
It writes and rises, 50% oily sludge viscosity is greater than 100mPas.It can be seen that the concentration of oily sludge is higher, the viscosity of system
What is risen is faster, and viscosity number is bigger, therefore it is 25% that this method, which selects the concentration of oily sludge,.
Because certain density crude oil to be first added in oily sludge, influence of the consideration crude content to viscosity first,
From the figure 3, it may be seen that when oil content is less than 20%, the viscosity of oily sludge solution is all larger than 25mPas, when oil content is 20%
When, oily sludge solution viscosity is 24.88mPas, and viscosity meets Changqing oilfields site pumping requirement, and solution ratio at this time
It is more stable, it is substantially not stratified under room temperature.When dispersant concentration is 0.05%, there is part oily sludge that cannot disperse, and
Just there is sediment settlement under room temperature；When dispersant concentration is 0.1% and 0.5%, all oily sludges are evenly dispersed in the solution,
At normal temperature, the oily sludge solution is more stable, does not disperse substantially, therefore tests selected surfactant concentration ranges and be
0.1%-0.5%.
Normal temperature condition of the invention is 20 DEG C.
Embodiment 4:
On the basis of based on the above embodiment, using Changqing oilfields oily sludge as sample in the present embodiment, make oily sludge
Form WO emulsion.The sample is solid paste, if any additive is not added at normal temperature, only adds live water, base
This is in insoluble state；If increasing temperature to 90 DEG C of formation temperature, oil is suspended in solution surface, and sand can not be good with oil
Dispersion.Therefore the solid paste of oily sludge sample first to be made to become flow regime, diesel oil is added in this example and makes flowing
State, and then dispersing agent is added on this basis.
Wherein, the diesel oil selects 0# diesel oil, and dispersing agent is the compound surfactant of polysorbate60 and emulsifier op-10.
Because both surfactants are that water-in-oil type surfactant should be dissolved in when preparing the compound surfactant
Diesel oil is prepared, and the HLB value of the compound surfactant is 5.Determination of Diesel Oil is 20%, and the concentration of dispersing agent is 0.1%-
0.5%.According to the formula, the dissolution time of oily sludge at normal temperature is less than 30min, and treated, and oily sludge viscosity is
23.09mPas has reached Changqing oilfields ground pumping requirements.
Experimental verification is carried out to the component ratio of the processing oily sludge of the present embodiment:
Appropriate oily sludge sample is weighed in the balance first in blue lid bottle, oily sludge content is 25%.Secondly at this
0# diesel oil is added in sample, Determination of Diesel Oil 20% stirs the oily sludge sample that diesel oil is added with glass bar, is allowed to gradually become
For flowable state.
The dispersing agent and long scene water of celebrating for weighing respective concentration in the balance are added in above-mentioned flowable state oily sludge sample.
Blue lid bottle is placed under blender, the bottom of stirring rod is from bottom of the beaker 1cm or so.DW-3 type digital display electric mixer is opened to open
It closes, adjusting mixing speed is about 350r/min, continues to stir, and until additive is completely dispersed, forms stable emulsion.It is stirring
The small blocky oily sludge not readily dissolved can be cut with glass bar during mixing, convenient for dissolution.It is to be mixed after mixing, will
Oily sludge in beaker is poured into in graduated 100mL graduated cylinder, and the stable state of system is observed in sealing, timing.
At normal temperature, the oily sludge of this method processing dissolves substantially in 0.5h.In order to be handled well containing greasy dirt
Mud requires pumpability of the profile control system in injection process good first, and according to Changqing oilfields ground pumping requirements, viscosity control exists
Be preferred within 25mPas, but specifically by on-site actual situations depending on.
When dispersant concentration is 0.05%, there is part oily sludge that cannot disperse, and just has silt heavy at normal temperature
Drop；When dispersant concentration is 0.1% and 0.5%, all oily sludges are evenly dispersed in the solution, at normal temperature, the oil-containing
Sludge solutions are more stable, do not disperse substantially, therefore testing selected surfactant concentration ranges is 0.1%-0.5%.
So that oily sludge solid paste is become flow regime because diesel oil is first added, therefore examines or check Determination of Diesel Oil to viscosity
It influences, as shown in Figure 1, when Determination of Diesel Oil is 15%, the viscosity of oily sludge is 54.66mPas, when Determination of Diesel Oil is
When 20%, the viscosity of oily sludge is 23.09mPas, meets pumping conditions.When the bigger oily sludge solution of oil content is more steady
Fixed, the oily sludge solution that left side oil content is 10%, with regard to water-oil separating, therefore selects Determination of Diesel Oil for 20% in 2h.Fig. 2
Influence for oily sludge carrying amount to treated oily sludge viscosity, as shown in the figure, under normal temperature conditions, when containing greasy dirt
When mud concentration is less than 30%, viscosity is in 25mPas or so；When oily sludge concentration is greater than 30%, viscosity is significantly risen, and 50%
Oily sludge viscosity be greater than 100mPas.It can be seen that the concentration of oily sludge is higher, the viscosity of system rise it is faster,
Viscosity number is bigger, therefore it is 25% that this method, which selects the concentration of oily sludge,.
Oily sludge refers to the stratum soil or clay for being mixed into crude oil or other product oils, and crude oil and product oil are not
It can directly be recycled and become waste, earth's surface and surrounding enviroment are polluted.
Because certain density crude oil to be first added in oily sludge, influence of the consideration crude content to viscosity first,
From the figure 3, it may be seen that when oil content is less than 20%, the viscosity of oily sludge solution is all larger than 25mPas, when oil content is 20%
When, oily sludge solution viscosity is 24.88mPas, and viscosity meets Changqing oilfields site pumping requirement, and solution ratio at this time
It is more stable, it is substantially not stratified under room temperature.So choosing the oil content in oily sludge is 20%.
When dispersant concentration is 0.05%, there is part oily sludge that cannot disperse, and just has silt heavy at normal temperature
Drop；When dispersant concentration is 0.1% and 0.5%, all oily sludges are evenly dispersed in the solution, at normal temperature, the oil-containing
Sludge solutions are more stable, do not disperse substantially, therefore testing selected surfactant concentration ranges is 0.1%-0.5%.
Normal temperature condition of the invention is 20 DEG C, and water used in the present invention is long celebrating construction site water.
Embodiment 5:
On the basis of based on the above embodiment, the present embodiment provides the sealing characteristics to treated oily sludge to test
Card.Sealing characteristics experiment is rock core through the rough simulation fracture reservoir rock environment of seam, using conventional dynamic reservoir core plugging
Physical simulation experiment investigates treated shut-off capacity of the oily sludge in cracking rock core.Fracture aperture in the present embodiment
It is set as the level of 0.3mm, injection flow is 0.4mL/min, and core holding unit confining pressure is 4MPa, and treated, and oily sludge exists
It is injected in the rock core of crack under room temperature, injection rate is unified for 1VP。
Experimental verification: the survey including rock core physical parameter is carried out to the sealing characteristics of the present embodiment treated oily sludge
Amount, processing, the preparation of crack rock core and physical analogy core plugging.
Permeability is surveyed first for water.Rock core after drying is put into core holding unit, a stable confining pressure 4MPa, rock are applied
Heart clamp holder is connected in vacuum system, vacuumizes 12h or so；Rock core after exhausting vacuum is sufficiently saturated mould in inlet and outlet one end
Simulation water is fitted into storage tank, connects experimental provision by quasi- water；Core holding unit keeps stable confining pressure 4MPa, experimental system
Part leakage detection before core entry end injects salt water into rock core with certain flow (such as 0.4mL/min, 1mL/min), together
When open pressure measuring system tracking measurement core entry end pressure, injection simulation water, until monitoring pressure level-off until, remember
The lower steady pressure is 780KPa.Calculating permeability according to the Darcy formula of deformation is 1.266 μm2.It secondly is crack rock core
Preparation.After the rock core for having surveyed permeability is put into drying box sufficiently dry cooling, crack rock core is started from.Rock core is put in
On bench vice, slowly presses and rock core is pressed into two halves.Certain several with rock core equal length are put on section length direction always
The copper wire of diameter, in order to make that treated, oily sludge is easier to inject, and is sprinkled into a small amount of fine sand.After rock core is carefully closed up,
It is slowly put in core holding unit, and adds the confining pressure of 4MPa, with the rough simulation fracture reservoir rock environment of the method.Due to selecting
The better mechanical properties such as copper wire hardness, be able to bear certain pressure and morphotropism very little, rock core filling copper wire exists in addition
Under the confining pressure effect of 4MPa, very little is deformed, therefore the aperture in crack can be similar to the copper wire of filling to the extent permitted by the error
Diameter.The cracking rock core of different opening can be obtained in this method, and the present embodiment selects the aperture of 0.3mm.After making crack rock core,
As conventional dynamic reservoir core plugging physical simulation experiment.It will be packed into in-site modeling water in water pot and high-pressure container and treated
Oily sludge keeps corresponding line equipment to have been filled with each fluid.The measuring method of cracking rock core effective permeability is surveyed with water
The method of permeability.It first fills the water, until pressure remained steady, the steady pressure write down at this time is 5.4KPa.Then note is changed to contain
Greasy dirt solution, injection rate 1VP, finally continue water flowing, until pressure is stablized, the pressure write down at this time is 970KPa.By with
It is 99.4% that upper pressure data, which calculates sealing ratiod,.
Fig. 4 be injection pressure and inject fluid volume number curve graph, the oily sludge that shows that treated is in Fractured
Sealing characteristics in rock core.As shown in Figure 4, the stable pressure of crack rock core water drive is 5.4kPa or so.Implantation concentration is 20%
Oily sludge solution, early period, pressure persistently increases, and sharply rises to maximum pressure again after undergoing of short duration falling, about
1500kPa；Subsequent pressure falls back to 900kPa or so, and within one section of period pressure in an a small range fluctuating change.Injection
About 1VPOily sludge solution after, start following injected water, early period, interim alternately rising is presented in pressure on the basis of before
The phenomenon that with decline；Injected water volume is in 2.0VPAfterwards, pressure reduction；Mid-term, with following injected water, after pressure rise a to pressure
It reduces, is tended towards stability in 970kPa or so, sealing ratiod 99.4% again, this shows that 20% oily sludge solution is to aperture
The cracking rock core of 0.3mm can form effective closure.
Therefore the processing method of the oily sludge of offer of the invention is simple, raw material sources are wide, and sealing characteristics is strong,
Resource utilization can be carried out to oily sludge, provide a new technical ability deposit for oilfield treatments oily sludge.
Experimental method described in above-described embodiment is unless otherwise specified conventional method；The reagent and material, such as
Without specified otherwise, commercially obtain.
Claims (6)
1. a kind of processing method of oily sludge, it is characterised in that: specific steps are as follows:
Step 1: oily sludge to be processed, diesel oil, dispersing agent and water are taken out in proportion；
Step 2: will be added the diesel oil of proportional quantities in step 1 in the oily sludge to be processed taken out in proportion in step 1,
It stirs and is allowed to gradually become flowable state；
Step 3: after the completion of step 2, the dispersion of proportional quantities in step 1 will be sequentially added in oily sludge after mixing evenly
Agent and water, and stir evenly, so that its entire state forms stable emulsion, and its viscosity is measured, so that its viscosity is less than
25mPa•s；
Step 4: after completing step 3, by treated, oily sludge is stand-by；
The oily sludge, diesel oil, dispersing agent and water proportionally carry out above-mentioned steps processing, the mass percent of ratio
Are as follows:
Oily sludge 20-30%
Diesel oil 30-40%
Dispersing agent 5-15%
Remaining is water.
2. a kind of processing method of oily sludge according to claim 1, it is characterised in that: the oily sludge, diesel oil,
The mass percent of dispersing agent and water ratio are as follows:
Oily sludge 25%
Diesel oil 35%
Dispersing agent 10%
Water 30%.
3. a kind of processing method of oily sludge according to claim 1, it is characterised in that: the diesel oil is 0# bavin
Oil.
4. a kind of processing method of oily sludge according to claim 1, it is characterised in that: the dispersing agent is tween
60 with the compound surfactant of emulsifier op-10, the ratio of the polysorbate60 and emulsifier op-10 is 1:4.
5. a kind of processing method of oily sludge according to claim 1, it is characterised in that: the oily sludge its contain
Oil mass is 20-30%.
6. a kind of processing method of oily sludge according to claim 1, it is characterised in that: pass through in the step 3
HAAKE RS600 type rheometer carrys out viscosimetric.
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| CN201610585854.XA CN106007296B (en) | 2016-07-22 | 2016-07-22 | A kind of processing method of oily sludge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480627A (en) * | 2003-08-05 | 2004-03-10 | 中国石油天然气股份有限公司 | Technique for dissecting depth of sludge containing oil in injection well |
| CN104403648A (en) * | 2014-10-24 | 2015-03-11 | 西安石油大学 | Oily sludge profile control agent and preparation method thereof |
| CN104745162A (en) * | 2015-02-26 | 2015-07-01 | 东北石油大学 | Emulsified and cross-linked oil-containing sludge profile control agent |
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| JP2000354895A (en) * | 1999-06-17 | 2000-12-26 | Yasushi Kamaike | Oil-containing sludge treatment agent and treatment method of oil-containing sludge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1480627A (en) * | 2003-08-05 | 2004-03-10 | 中国石油天然气股份有限公司 | Technique for dissecting depth of sludge containing oil in injection well |
| CN104403648A (en) * | 2014-10-24 | 2015-03-11 | 西安石油大学 | Oily sludge profile control agent and preparation method thereof |
| CN104745162A (en) * | 2015-02-26 | 2015-07-01 | 东北石油大学 | Emulsified and cross-linked oil-containing sludge profile control agent |
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Effective date of registration: 20201029 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: 710016 Shaanxi city of Xi'an province Weiyang District four road Fengcheng Changqing Technology Building Patentee before: CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED ENGINEERING TECHNOLOGY Research Institute |