CN113897185A - Oil-based mud waste oil sludge emulsification and reutilization method - Google Patents
Oil-based mud waste oil sludge emulsification and reutilization method Download PDFInfo
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- CN113897185A CN113897185A CN202110982381.8A CN202110982381A CN113897185A CN 113897185 A CN113897185 A CN 113897185A CN 202110982381 A CN202110982381 A CN 202110982381A CN 113897185 A CN113897185 A CN 113897185A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 57
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- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- 150000005215 alkyl ethers Chemical class 0.000 claims description 2
- OOCMUZJPDXYRFD-UHFFFAOYSA-L calcium;2-dodecylbenzenesulfonate Chemical compound [Ca+2].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O.CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O OOCMUZJPDXYRFD-UHFFFAOYSA-L 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
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- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
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- 239000011499 joint compound Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the technical field of petrochemical industry, and relates to an oil-based mud waste oil sludge emulsification and reutilization method. The method comprises the following steps: (1) adding the waste oil sludge of the oil-based mud diluted by the diluent into a reaction kettle, and adding an emulsifier for preliminary emulsification; (2) transferring the diluted and preliminarily emulsified waste oil sludge of the oil-based mud into a colloid mill for further emulsification; (3) returning the further emulsified waste oil sludge of the oil-based mud to the reaction kettle, circularly emulsifying the waste oil sludge of the oil-based mud between the reaction kettle and the colloid mill, and using the finally emulsified waste oil sludge of the oil-based mud to prepare the lubricating fluid loss additive of the drilling fluid. By utilizing the method for emulsifying and recycling the waste oil sludge of the oil-based mud, the difficulty in subsequent treatment of the waste oil sludge of the oil-based mud can be greatly reduced, and the waste oil sludge of the oil-based mud can be further subjected to harmless and recycling treatment.
Description
Technical Field
The invention belongs to the technical field of petrochemical industry, and relates to an oil-based mud waste oil sludge emulsification and reutilization method.
Background
The waste oil sludge of the oil-based mud is a pollutant generated in the using process of the oil-based drilling fluid, comprises complex components such as oil, clay, various chemical treatment agents, weighting materials, dirty oil, sewage, mud and the like, has the characteristics of high oil content, more organic pollutants and the like, can cause serious pollution to surrounding soil, water sources, farmlands and air if not properly treated for a long time, and brings great harm to human health, life and production activities.
At present, the technology for treating the oily sludge is various, and each method has the advantages and disadvantages and the application range. For example, most of oil resources in the oil sludge can be recovered by a solvent extraction method, but the defects of long flow, complex process, high treatment cost and the like exist at the same time; the biological treatment method has no secondary pollution and simple process, but the experimental bacteria selection is carried out in a targeted manner according to the performance of the waste drilling fluid, and the treatment period is longer; the chemical demulsification method needs to use a targeted medicament and heat for the seriously emulsified oil sludge, and generally has no universal applicability; the incineration method can reduce the volume of sludge, remove toxicity and recover energy and byproducts, but has complex flow, high cost and operation cost, can not recover crude oil, and generates secondary pollution to air by sulfur dioxide, carbon monoxide and dust generated by incineration.
With the increasingly strict and perfect environmental regulations, the practical application of the technology for treating the waste oil sludge of the oil-based mud in a recycling and harmless manner becomes a necessary trend.
Disclosure of Invention
The invention aims to provide an emulsification and reutilization method of waste oil sludge of oil-based mud, which can greatly reduce the difficulty of subsequent treatment of the waste oil sludge of oil-based mud and can further perform harmless and recycling treatment on the waste oil sludge of oil-based mud.
To achieve the object, in a basic embodiment, the present invention provides a method for emulsifying and recycling waste oil sludge of oil-based mud, comprising the steps of:
(1) adding the waste oil sludge of the oil-based mud diluted by the diluent into a reaction kettle, and adding an emulsifier for preliminary emulsification;
(2) transferring the diluted and preliminarily emulsified waste oil sludge of the oil-based mud into a colloid mill for further emulsification;
(3) returning the further emulsified waste oil sludge of the oil-based mud to the reaction kettle, circularly emulsifying the waste oil sludge of the oil-based mud between the reaction kettle and the colloid mill, and using the finally emulsified waste oil sludge of the oil-based mud to prepare the lubricating fluid loss additive of the drilling fluid.
The principle of the relevant process of the present invention is illustrated in fig. 1, which is briefly described as follows:
adding the waste oil sludge of the oil-based mud into a sludge tank, then adding a diluent to scour the sludge tank, stirring and diluting the oil sludge under the action of an anchor frame type stirring paddle to obtain oil sludge diluent after full dilution, and then adding the oil sludge diluent into a reaction kettle by a self-priming rotary cam pump (AC rotor self-priming pump).
Adding an emulsifier into a feeding bin at the upper part of the reaction kettle, performing in-kettle circulation mixing in the reaction kettle under the action of a turbine propulsion stirring paddle of the reaction kettle, performing preliminary emulsification reaction on the oil sludge diluent and the emulsifier under the shearing action of an emulsification head, and obtaining preliminary emulsified oil sludge diluent after the oil sludge diluent and the emulsifier are uniformly mixed and preliminary emulsification is completed.
And (3) under the action of the driving force of a turbine propulsion stirring paddle of the reaction kettle, allowing the preliminarily emulsified oil sludge diluent to enter a colloid mill for further emulsification, returning the preliminarily emulsified oil sludge diluent to the reaction kettle under the driving of the colloid mill for circular emulsification reaction, and discharging the finally emulsified oil sludge product from the bottom of the reaction kettle for preparing the drilling fluid lubricating fluid loss additive.
Preferably, the waste oil sludge of the oil-based mud is added into a sludge tank for stirring under the self-priming action of a rotary cam pump.
Preferably, the diluent is added into a sludge tank under the self-priming action of a rotary cam pump, and the sludge is stirred and diluted under the action of an anchor frame type stirring paddle.
Preferably, the waste oil sludge of the oil-based mud is stirred and diluted with a diluent in a sludge tank, the temperature is controlled between 40 ℃ and 50 ℃, and the dilution is carried out for 15 minutes to 30 minutes to obtain an oil sludge diluent.
Preferably, the oil sludge diluent is added into the reaction kettle under the self-priming action of the rotary cam pump.
Preferably, the emulsifier is added into a bin at the upper part of the reaction kettle.
Preferably, the oil sludge diluent and the emulsifier are subjected to in-kettle circulating mixing under the action of a turbine propulsion stirring paddle of the reaction kettle, the temperature inside the reaction kettle is controlled to be 40-50 ℃, and the mixture is mixed for 15-30 minutes to obtain a mixed solution.
Preferably, the mixed solution carries out preliminary emulsification reaction on the oil sludge diluent and the emulsifier under the shearing action of a vortex emulsifying head of the reaction kettle, the temperature inside the reaction kettle is controlled between 70 ℃ and 80 ℃, and the emulsification is carried out for 15 to 30 minutes, so that the preliminary emulsified oil sludge diluent is obtained.
Preferably, the preliminarily emulsified oil sludge diluent enters a colloid mill for further emulsification under the action of the driving force of a turbine propulsion stirring paddle of the reaction kettle and returns to the reaction kettle under the driving of the colloid mill, and the internal temperature of the colloid mill is controlled between 70 and 80 ℃.
Preferably, in the emulsification process of the oil sludge diluent, the circulation emulsification reaction is carried out between a reaction kettle and a colloid mill, the emulsification reaction temperature is 70-80 ℃, and the circulation emulsification is carried out for 15-30 minutes.
Preferably, after the circulation emulsification reaction is finished, the finally emulsified diluted emulsified oil sludge product is discharged from the bottom of the reaction kettle and is used for manufacturing the drilling fluid lubricating fluid loss additive.
In a preferred embodiment, the present invention provides a method for emulsifying and reusing waste oil sludge of oil-based mud, wherein in the step (1), the diluting temperature of the diluent for diluting the waste oil sludge of oil-based mud is 40 to 50 ℃, and the diluting time is 15 to 30 minutes.
In a preferred embodiment, the invention provides a method for emulsifying and reusing oil-based mud waste oil sludge, wherein in the step (1), the diluent is selected from one or more of vegetable oil and mineral oil, and the mass ratio of the diluent to the oil-based mud waste oil sludge is 1:4-1: 1.
In a preferred embodiment, the invention provides an emulsification recycling method of waste oil sludge of oil-based mud, wherein in the step (1), the emulsifying temperature for the preliminary emulsification by adding the emulsifier is 70-80 ℃, the emulsifying speed is 1700-2200r/min, and the emulsifying time is 15-30 minutes.
In a preferred embodiment, the invention provides a method for emulsifying and reusing waste oil sludge of oil-based mud, wherein in the step (1), the emulsifier is one or more selected from sodium alkylsulfonate, sodium alkylbenzenesulfonate, calcium dodecylbenzenesulfonate, polyoxyethylene alkyl ether and sorbitan fatty acid ester, and the mass ratio of the emulsifier to the waste oil sludge of oil-based mud is 1:10-1: 20.
In a preferred embodiment, the invention provides an emulsification recycling method of oil-based mud waste oil sludge, wherein in the step (2), the emulsification temperature of the further emulsification is 70-80 ℃, the emulsification rotating speed is 2600r/min, and the emulsification time is 15-30 minutes.
In a preferred embodiment, the present invention provides a method for emulsifying and reusing oil-based mud waste oil sludge, wherein in the step (3), the circulating emulsification is: the waste oil sludge of the oil-based mud emulsified in the colloid mill is driven by the colloid mill to return to the reaction kettle, is emulsified for 15-30 minutes at 70-80 ℃ under the shearing action of 1500-plus 2500r/min at the emulsification head of the reaction kettle, and then enters the colloid mill to be emulsified for 15-30 minutes at 70-80 ℃ at the rotating speed of 2000-plus 3000r/min under the driving force of a turbine propulsion stirring paddle of the reaction kettle, so as to serve as a circulating emulsification period and carry out 2-3 circulating emulsification periods in total.
The method has the beneficial effects that by using the method for emulsifying and recycling the waste oil sludge of the oil-based mud, the difficulty in subsequent treatment of the waste oil sludge of the oil-based mud can be greatly reduced, and the waste oil sludge of the oil-based mud can be further subjected to harmless and recycling treatment.
The invention realizes energy conversion for the waste oil-based mud, also recycles the waste and meets the requirements of environmental protection and strategic guidelines of sustainable development in China.
Drawings
Fig. 1 is a schematic flow diagram illustrating an exemplary method for emulsifying and recycling waste oil sludge of oil-based mud according to the present invention.
Detailed Description
The following examples further illustrate specific embodiments of the present invention.
Example 1: oil-based mud waste oil sludge emulsification recycling (I)
The present embodiment is described by taking the oil-based mud waste sludge of a certain offshore drilling platform as an example. The physicochemical properties of the waste oil sludge of feed-1 are shown in table 1, and the amount of isoparaffin as diluent added is 25% of the weight of the oil sludge. The diluent and the oil sludge are mixed in a sludge tank for 20 minutes, and the dilution temperature is controlled at 50 ℃. The adding amount of the emulsifier nonylphenol polyoxyethylene ether is 5% of the weight of the oil sludge, the emulsifier and the oil sludge diluent are mixed in a reaction kettle and preliminarily emulsified for 20 minutes, and the emulsifying temperature is controlled at 75 ℃. And (3) transferring the oil sludge subjected to preliminary emulsification into a colloid mill for further emulsification for 20 minutes, wherein the emulsification temperature is controlled at 75 ℃. The colloid mill reaction kettle carries out circulating emulsification reaction for 60 minutes (the waste oil sludge of the oil-based mud completing emulsification in the colloid mill is driven by the colloid mill to return to the reaction kettle, emulsification is carried out for 15 minutes under the condition of 75 ℃ under the shearing action of 2500r/min at the emulsification head of the reaction kettle, then emulsification is carried out for 15 minutes under the condition of 75 ℃ at the rotating speed of 3000r/min in the colloid mill under the driving force action of a turbine propulsion stirring paddle of the reaction kettle, and the emulsification is taken as a circulating emulsification period and is carried out for 2 circulating emulsification periods in total), and the circulating emulsification temperature is controlled at 75 ℃. The physical and chemical properties of the drilling fluid lubricating fluid loss additive-1 prepared in the embodiment are shown in Table 2.
Example 2: oil-base mud waste oil sludge emulsification reutilization (II)
The present embodiment is illustrated by taking an oil-based mud waste sludge of a land rig as an example. The physicochemical properties of the waste sludge of feed-2 are shown in table 1, and the amount of diluent kerosene added is 30% of the weight of the sludge. The diluent and the oil sludge are mixed in a sludge tank for 30 minutes, and the dilution temperature is controlled at 40 ℃. The adding amount of the emulsifier sodium dodecyl benzene sulfonate is 5 percent of the weight of the oil sludge, the emulsifier and the oil sludge diluent are mixed in a reaction kettle and are preliminarily emulsified for 30 minutes, and the emulsifying temperature is controlled at 80 ℃. And (3) transferring the oil sludge subjected to preliminary emulsification into a colloid mill for further emulsification for 30 minutes, wherein the emulsification temperature is controlled at 80 ℃. The colloid mill reaction kettle carries out circulating emulsification reaction for 90 minutes (the waste oil sludge of the oil-based mud completing emulsification in the colloid mill is driven by the colloid mill to return to the reaction kettle, emulsification is carried out for 15 minutes under the condition of 80 ℃ under the shearing action of 2000r/min at the emulsification head of the reaction kettle, then emulsification is carried out for 15 minutes under the condition of 80 ℃ at the rotating speed of 2500r/min at the colloid mill under the driving force action of a turbine propulsion stirring paddle of the reaction kettle, and the emulsification is carried out for 3 circulating emulsification periods in total as a circulating emulsification period), and the circulating emulsification temperature is controlled to be 80 ℃. The physical and chemical properties of the drilling fluid lubricating fluid loss additive-2 prepared in the embodiment are shown in Table 2.
Example 3: emulsification and reuse of waste oil sludge of oil-based mud
The present embodiment will be described by taking an oil-based mud waste sludge of a land mud station as an example. The physicochemical properties of the waste oil sludge of feed-3 are shown in table 1, and the amount of the diluent cyclohexane added is 40% of the weight of the oil sludge. The diluent and the oil sludge are mixed in a sludge tank for 25 minutes, and the dilution temperature is controlled at 50 ℃. The adding amount of the sorbitan fatty acid ester serving as an emulsifier is 5 percent of the weight of the oil sludge, the emulsifier and the oil sludge diluent are mixed in a reaction kettle and are preliminarily emulsified for 25 minutes, and the emulsifying temperature is controlled at 75 ℃. And (3) transferring the oil sludge subjected to preliminary emulsification into a colloid mill for further emulsification for 25 minutes, wherein the emulsification temperature is controlled at 75 ℃. The colloid mill reaction kettle carries out circulating emulsification reaction for 120 minutes (the waste oil sludge of the oil-based mud completing emulsification in the colloid mill is driven by the colloid mill to return to the reaction kettle, emulsification is carried out for 30 minutes under the condition of 75 ℃ under the shearing action of 1500r/min at the emulsifying head of the reaction kettle, then emulsification is carried out for 30 minutes under the condition of 75 ℃ at the rotating speed of 2000r/min at the colloid mill under the driving force action of a turbine propulsion stirring paddle of the reaction kettle, and the emulsification is taken as a circulating emulsification period and is carried out for 2 circulating emulsification periods in total), and the circulating emulsification temperature is controlled at 75 ℃. The physical and chemical properties of the drilling fluid lubricating fluid loss additive-3 prepared in the embodiment are shown in Table 2.
Table 1 oil-based mud waste sludge physical and chemical properties table
| Numbering | Brookfield viscosity (cP) | Density (g/ml) |
| Feed-1 | 133，700.00 | 1.65 |
| Feed-2 | 125,670.00 | 1.49 |
| Feed-3 | 142,689.00 | 1.72 |
TABLE 2 lubricating fluid loss additive physical and chemical property table
The drilling fluid lubricating fluid loss additive prepared in the embodiments 1 to 3 is used for preparing drilling fluid according to the following procedures and detecting the performance of the drilling fluid, wherein the specific drilling fluid configuration refers to the technical specification of a liquid lubricant for QSY 18088-2016 drilling fluid, and the drilling fluid rheological property and lubricating fluid loss capacity testing method refers to the GB/T16783.1 GB/T16783.1 petroleum and natural gas industrial drilling fluid field testing part 1: a water-based drilling fluid.
1. Base stock preparation procedure
1) Adding 20g of bentonite for experimental slurry preparation of the drilling fluid into 400ml of distilled water in a high stirring cup, and stirring at a high speed of 10000r/min for 20min until the bentonite is completely dispersed;
2) adding 0.6g of sodium carbonate, stirring at a high speed (11000r/min) for 20min, and then sealing and maintaining at 25 ℃ for 24 h;
3) stirring the well-maintained bentonite mixture at 10000r/min at a high speed for 10 min;
4) 7 cups of base stock are prepared according to the method, and the number of the base stock is marked as No. 1, 2, 3, 4, 5, 6 and 7.
2. Drilling fluid preparation procedure
1) Taking the No. 1 base slurry, and stirring at a high speed of 10000r/min for 20min to prepare the drilling fluid base slurry No. 1.
2) Taking No. 2 base slurry, adding 2.0ml of lubricating fluid loss additive-1 prepared in the example 1 under the condition of 10000r/min high-speed stirring, and stirring at high speed (11000r/min) for 20min to prepare drilling fluid No. 2;
3) taking No. 2 base slurry, adding 4.5ml of lubricating fluid loss additive-1 prepared in the example 1 under the condition of 10000r/min high-speed stirring, and stirring at high speed (11000r/min) for 20min to prepare a drilling fluid No. 3;
4) taking No. 3 base slurry, adding 2.0ml of lubricating fluid loss additive-2 prepared in the embodiment 2 under the condition of 10000r/min high-speed stirring, and stirring at high speed (11000r/min) for 20min to prepare drilling fluid No. 4;
5) taking No. 4 base slurry, adding 4.5ml of lubricating fluid loss additive-2 prepared in the example 2 under the condition of 10000r/min high-speed stirring, and stirring at high speed (11000r/min) for 20min to prepare drilling fluid No. 5;
6) taking No. 5 base slurry, adding 2.0ml of lubricating fluid loss additive-3 prepared in the embodiment 3 under the condition of 10000r/min high-speed stirring, and stirring at high speed (11000r/min) for 20min to prepare drilling fluid No. 6;
7) taking No. 6 base slurry, adding 4.5ml of the lubricating fluid loss additive-3 prepared in the example 3 under the condition of 10000r/min high-speed stirring, and stirring at a high speed of 11000r/min for 20min to prepare the drilling fluid No. 7.
The drilling fluid performance evaluation results are shown in table 3 below.
TABLE 3 drilling fluid physical and chemical properties chart
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations. The foregoing examples or embodiments are merely illustrative of the present invention, which may be embodied in other specific forms or in other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims should be construed to be included therein.
Claims (7)
1. The method for emulsifying and recycling the waste oil sludge of the oil-based mud is characterized by comprising the following steps of:
(1) adding the waste oil sludge of the oil-based mud diluted by the diluent into a reaction kettle, and adding an emulsifier for preliminary emulsification;
(2) transferring the diluted and preliminarily emulsified waste oil sludge of the oil-based mud into a colloid mill for further emulsification;
(3) returning the further emulsified waste oil sludge of the oil-based mud to the reaction kettle, circularly emulsifying the waste oil sludge of the oil-based mud between the reaction kettle and the colloid mill, and using the finally emulsified waste oil sludge of the oil-based mud to prepare the lubricating fluid loss additive of the drilling fluid.
2. The method of claim 1, wherein: in the step (1), the diluting temperature of the diluent for diluting the waste oil sludge of the oil-based mud is 40-50 ℃, and the diluting time is 15-30 minutes.
3. The method of claim 1, wherein: in the step (1), the diluent is selected from one or more of vegetable oil and mineral oil, and the mass ratio of the diluent to the waste oil sludge of the oil-based mud is 1:4-1: 1.
4. The method of claim 1, wherein: in the step (1), the emulsifying temperature for the preliminary emulsification by adding the emulsifier is 70-80 ℃, the emulsifying rotation speed is 1700-2200r/min, and the emulsifying time is 15-30 minutes.
5. The method of claim 1, wherein: in the step (1), the emulsifier is selected from one or more of sodium alkylsulfonate, sodium alkyl benzene sulfonate, calcium dodecylbenzene sulfonate, polyoxyethylene alkyl ether and sorbitan fatty acid ester, and the mass ratio of the emulsifier to the waste oil sludge of the oil-based mud is 1:10-1: 20.
6. The method of claim 1, wherein: in the step (2), the emulsification temperature of the further emulsification is 70-80 ℃, the emulsification rotation speed is 2600r/min, and the emulsification time is 15-30 minutes.
7. The method of claim 1, wherein: in the step (3), the circulating emulsification is as follows: the waste oil sludge of the oil-based mud emulsified in the colloid mill is driven by the colloid mill to return to the reaction kettle, is emulsified for 15-30 minutes at 70-80 ℃ under the shearing action of 1500-plus 2500r/min at the emulsification head of the reaction kettle, and then enters the colloid mill to be emulsified for 15-30 minutes at 70-80 ℃ at the rotating speed of 2000-plus 3000r/min under the driving force of a turbine propulsion stirring paddle of the reaction kettle, so as to serve as a circulating emulsification period and carry out 2-3 circulating emulsification periods in total.
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Inventor after: Sun Zhongjun Inventor after: Li Shuo Inventor after: Huang Qingqing Inventor after: Quan Huanzhe Inventor after: Feng Liqiong Inventor after: Zhang Yunlei Inventor after: Zhang Zhong Inventor before: Sun Zhongjun Inventor before: Li Shuo Inventor before: Quan Huanzhe Inventor before: Feng Liqiong Inventor before: Zhang Yunlei Inventor before: Zhang Zhong |
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Application publication date: 20220107 |