CN115746904B - Closed short-process treatment method for acidized oil - Google Patents
Closed short-process treatment method for acidized oil Download PDFInfo
- Publication number
- CN115746904B CN115746904B CN202211320564.4A CN202211320564A CN115746904B CN 115746904 B CN115746904 B CN 115746904B CN 202211320564 A CN202211320564 A CN 202211320564A CN 115746904 B CN115746904 B CN 115746904B
- Authority
- CN
- China
- Prior art keywords
- oil
- sewage
- acidified
- frequency
- acidified oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000010865 sewage Substances 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000002253 acid Substances 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000000926 separation method Methods 0.000 claims abstract description 21
- 230000005684 electric field Effects 0.000 claims abstract description 20
- 230000018044 dehydration Effects 0.000 claims abstract description 19
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 19
- 238000004062 sedimentation Methods 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 41
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
- 239000011259 mixed solution Substances 0.000 claims description 19
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000012752 auxiliary agent Substances 0.000 claims description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 11
- 229920000570 polyether Polymers 0.000 claims description 11
- PNGBYKXZVCIZRN-UHFFFAOYSA-M sodium;hexadecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCCCCCS([O-])(=O)=O PNGBYKXZVCIZRN-UHFFFAOYSA-M 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 4
- 238000004581 coalescence Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 4
- 230000005284 excitation Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 108
- 239000010779 crude oil Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- -1 fatty acid salt Chemical class 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000000703 high-speed centrifugation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
The invention provides a closed short-process treatment method of acidified oil, and belongs to the technical field of acidified oil treatment. The invention processes the acidified oil in the high-frequency coalescing device, the whole process of the processing is in a closed state, the front end adopts the in-station sewage and the acidified oil produced liquid to be fully mixed and then enter the processing device, which is more beneficial to pre-separating the sewage and further realizes better electric field excitation demulsification and dehydration effects; the treatment process does not need a sedimentation separation tank, so that the treatment time is greatly shortened, the process flow is simplified, the energy consumption is reduced, the mixed incoming liquid enters a high-frequency coalescence device for treatment, the outlet can reach the standard, the treatment efficiency is high, further large tank chemical sedimentation is not needed, and the acidified oil can be rapidly treated to reach the standard within 3 hours (the water content in the treated acidified oil is lower than 2 percent). Therefore, the method of the invention not only shortens the treatment time greatly, but also simplifies the process, removes the sedimentation tank, has low energy consumption, and can lead the acid oil produced liquid to realize the separation standard rapidly.
Description
Technical Field
The invention relates to the technical field of acidizing oil treatment, in particular to a closed short-flow treatment method of acidizing oil.
Background
The acidified oil is mainly a relatively stable W/O emulsion formed by mixing acid liquor, fracturing fluid, oilfield chemical agent and other surface active substances such as fatty acid salt in stratum and natural surface active substances such as colloid, asphaltene, paraffin and the like in crude oil during the exploitation process of a new well and an old well of an oilfield, which are added in the processes of drilling, acidification, fracturing, water shutoff and profile control, chemical viscosity reduction, chemical error prevention and asphaltene unblocking, and the problem of difficult demulsification exists.
At present, the treatment method for the acidified oil at home and abroad mainly adopts a conventional thermochemical sedimentation dehydration process, namely, after a demulsifier is added into the acidified oil, gravity sedimentation is carried out in a large tank for 15-20 days. The technology has the series of problems of high sedimentation temperature (80-85 ℃) energy consumption, long sedimentation time (more than 20 days), more occupied storage tanks and the like, and generally is difficult to meet the index requirement (the water content in the acidized oil after treatment is lower than 2%). In addition, some manufacturers adopt a mixed tempering and high-speed centrifugation combined with thermochemical sedimentation technology, and the acidified oil is treated in a physical-chemical combined treatment mode, so that the oil content after treatment can be less than 1%. The technology can process the test materials to reach the standard, but the test process has the advantages of more movable equipment, frequent equipment maintenance, huge cost and higher processing cost. In order to solve the technical bottlenecks of long time consumption, high energy consumption and difficult oil yielding reaching standards in the existing acidified oil treatment technology, development of a rapid treatment method of the acidified oil is needed.
Disclosure of Invention
The invention aims to provide a closed short-flow treatment method for acid oil, which can enable the acid oil produced liquid to rapidly realize separation reaching the standard, and has short treatment time and low energy consumption.
In order to achieve the above object, the present invention provides the following technical solutions:
The invention provides a closed short-process treatment method of acidified oil, which comprises the following steps:
Mixing the acid oil produced liquid, sewage and a treating agent, and pre-separating the obtained mixture in a front cavity of a high-frequency coalescing device to obtain an acid oil mixed liquid; the oil content in the acidified oil mixed solution is less than or equal to 1000ppm;
Placing the acidified oil mixed solution in a rear cavity of the high-frequency coalescing device, and performing electric field enhanced demulsification and dehydration to obtain treated acidified oil;
The treating agent comprises the following components in percentage by mass: 5-10% of auxiliary agent, 30-40% of demulsifier, 5-10% of viscosity reducer, 20-30% of solvent and the balance of water;
the closed short-process treatment method does not comprise sedimentation separation.
Preferably, the volume ratio of the acid oil produced liquid to the sewage is (1-3): 1.
Preferably, the auxiliary comprises dimethyl sulfoxide; the demulsifier comprises a polyether demulsifier.
Preferably, the viscosity reducer comprises sodium hexadecyl sulfonate; the solvent comprises methanol.
Preferably, the concentration of the treating agent in the acidified oil is 500ppm to 5000ppm.
Preferably, the high-frequency coalescing device is internally provided with coalescing material.
Preferably, the electric field frequency of the electric field enhanced demulsification and dehydration is 10000-20000 Hz, and the time is 50-250 min.
Preferably, the water content of the treated acidified oil is less than or equal to 2%.
Preferably, the mixing of the acid oil production liquid, the sewage and the treating agent comprises mixing the acid oil production liquid and the sewage, heating the mixture, and mixing the obtained mixture with the treating agent.
Preferably, the temperature of the heating treatment is 45 to 90 ℃.
The invention provides a closed short-flow treatment method of acidified oil, which is characterized in that the acidified oil is treated in a high-frequency coalescing device, the front end of the high-frequency coalescing device is fully mixed with station sewage and acidified oil produced liquid and then enters the treatment device to pre-separate the sewage, so that the content of the sewage in a rear cavity of the device is reduced, a better electric field activation demulsification and dehydration effect is further realized, and an oil-water separation effect is improved; the invention uses the treating agent to separate part of free water and emulsion separated by emulsion breaking in the process of pre-separating sewage, so as to realize the preliminary separation of oil and water; the whole treatment process is in a closed state, so that secondary pollution to the environment caused by volatilization or overflow is avoided; in addition, the treating agent used in the invention can play a role in rapid separation, and rapid water diversion can be completed in the high-frequency electric dehydration device, so that a sedimentation separation tank is not needed, the treatment time is greatly shortened, the process flow is simplified, the energy consumption is reduced, the mixed incoming liquid enters the high-frequency coalescence device for treatment, the outlet can reach the standard, the treatment efficiency is high, and the acidified oil can be rapidly treated to reach the standard (the water content in the treated acidified oil is lower than 2 percent) within 3 hours. Therefore, the method of the invention not only shortens the treatment time greatly, but also simplifies the process, removes the sedimentation tank, has low energy consumption, and can lead the acid oil produced liquid to realize the separation standard rapidly.
The sewage generated by the method can be recycled, and can also be returned to the sewage tank again, so that the demulsification and separation performances of the acidified oil are not affected.
The method adopts the high-frequency coalescing device, thereby not only meeting the production requirement of the oil field, but also achieving the purposes of energy conservation and consumption reduction, and the airtight process treatment is carried out, no volatile gas is generated in the whole process, the environmental pollution is avoided, and the environmental protection requirement is met.
Drawings
FIG. 1 is a flow chart of a closed short-process treatment method of the acidified oil of the present invention.
Detailed Description
The invention provides a closed short-process treatment method of acidified oil, which comprises the following steps:
Mixing the acid oil produced liquid, sewage and a treating agent, and pre-separating the obtained mixture in a front cavity of a high-frequency coalescing device to obtain an acid oil mixed liquid; the oil content in the acidified oil mixed solution is less than or equal to 1000ppm;
Placing the acidified oil mixed solution in a rear cavity of the high-frequency coalescing device, and performing electric field enhanced demulsification and dehydration to obtain treated acidified oil;
The treating agent comprises the following components in percentage by mass: 5-10% of auxiliary agent, 30-40% of demulsifier, 5-10% of viscosity reducer, 20-30% of solvent and the balance of water;
the closed short-process treatment method does not comprise sedimentation separation.
In the present invention, the required reagents or equipment are commercially available products well known to those skilled in the art unless specified otherwise.
The invention mixes the acid oil produced liquid, sewage and treating agent, and pre-separates the obtained mixture in the front cavity of the high-frequency coalescing device to obtain the acid oil mixed liquid.
The source of the acid oil production fluid is not particularly limited in the present invention, and may be obtained from sources well known in the art.
In the present invention, the sewage is preferably production sewage, and the source of the sewage is not particularly limited, and production sewage known in the art may be used. The invention utilizes the mixture of sewage and the acid oil produced liquid to realize the reutilization of sewage, avoids the utilization of a large amount of precious fresh water resources and realizes the recycling of sewage.
In the present invention, the volume ratio of the acid oil production liquid to the sewage is preferably (1 to 3): 1, more preferably 2:1.
In the invention, the treating agent comprises the following components in percentage by mass: 5-10% of auxiliary agent, 30-40% of demulsifier, 5-10% of viscosity reducer, 20-30% of solvent and the balance of water; more preferably 8-10% of auxiliary agent, 35-36% of demulsifier, 5% of viscosity reducer, 25% of solvent and the balance of water.
In the present invention, the auxiliary agent preferably includes dimethyl sulfoxide; the demulsifier preferably comprises a polyether demulsifier; the viscosity reducing agent preferably comprises sodium cetyl sulfonate; the solvent preferably comprises methanol.
The polyether demulsifier is not particularly limited, and commercial products known in the art can be obtained; in the embodiment of the invention, the star polyether demulsifier (JH-01) is purchased from Jinhua oil field auxiliary agent factory.
The invention uses the auxiliary agent to strengthen the wettability of the oil-water-solid interface; demulsification and water separation of the emulsified oil are carried out by using a demulsifier; the viscosity of the acidified oil emulsion is reduced by using the viscosity reducer, so that the acidified oil emulsion has good fluidity, and is convenient for realizing flow dehydration in the treatment process.
In the present invention, the concentration of the treating agent in the acidified oil is preferably 500 to 5000ppm, more preferably 1000 to 4000ppm, still more preferably 1500 to 2000ppm.
In the present invention, the mixing of the acid oil production liquid, the sewage and the treating agent preferably includes mixing the acid oil production liquid and the sewage, then heating the mixture, and mixing the resulting mixture with the treating agent. In the present invention, the temperature of the heat treatment is preferably 45 to 90 ℃, more preferably 60 to 80 ℃. According to the invention, the oil and water are better mixed through heating treatment, so that the effect of water washing is achieved.
In the present invention, the high-frequency coalescing device is preferably internally provided with a coalescing material, more preferably in the front chamber; the high-frequency coalescing device is not particularly limited in the present invention, and corresponding devices well known in the art may be used; the present invention is not particularly limited to the above-mentioned coalescing material, and the high-frequency coalescing device itself may be provided with the above-mentioned coalescing material. In a high-frequency coalescing device, under the action of a treating agent, part of free water and emulsified water separated by demulsification are separated, so that oil-water preliminary separation is realized, the oil content of sewage after preliminary separation is less than or equal to 1000ppm, and the water content is less than or equal to 10%.
The specific process of the sewage pre-separation is not particularly limited, and the gravity method is adopted for water diversion according to a high-frequency coalescing device well known in the art, and in the sewage pre-separation process, the oil-water specific gravity is different, and the unemulsified oil-water enters the high-frequency coalescing device and is automatically separated, so that part of sewage is separated.
In the invention, the purpose of the sewage pre-separation is to reduce the content of sewage in a rear cavity of the device, reduce the pressure of a subsequent electric field, and under the action of high water content, the action effect of the electric field is not ideal, so that the water outlet standard of 2% is difficult to reach, and the purpose of saving electric energy is realized.
In the invention, the oil content in the acidified oil mixture is preferably not more than 1000ppm.
After the acidified oil mixed solution is obtained, the acidified oil mixed solution is placed in a rear cavity of the high-frequency coalescence device, and electric field enhanced demulsification and dehydration are carried out to obtain the treated acidified oil.
In the invention, the electric field frequency of the electric field enhanced demulsification and dehydration is preferably 10000-20000 Hz, more preferably 15000-20000 Hz; the time is preferably 50 to 250 minutes, more preferably 60 to 150 minutes, and still more preferably 100 to 120 minutes. The invention uses electric field excitation to strengthen demulsification and dehydration.
In the present invention, the water content of the treated acidified oil is preferably 2% or less.
FIG. 1 is a flow chart of a closed short-flow treatment method of the acidified oil, which is shown in FIG. 1, wherein an acid oil produced liquid and production sewage are mixed, a treating agent is added into the mixed liquid after mixing, and after the acid oil produced liquid and the production sewage are fully mixed in a front cavity of a high-frequency coalescing device, part of sewage is pre-separated; the mixed solution after pre-separating the sewage enters a rear cavity, demulsification is enhanced by adopting the action of electric excitation, separation and dehydration are carried out, so that the oil content of the outlet acidified oil reaches the standard (the water content is less than or equal to 2 percent), the mixed solution returns to a crude oil treatment system of a combined station, and the obtained sewage returns to a sewage treatment system.
The technical solutions of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following examples, the demulsifier used was a star polyether demulsifier (JH-01) available from Jinhua oilfield additive plant.
Example 1
Mixing the acid oil produced liquid and the sewage on the station according to the volume ratio of 1:1, and heating to 80 ℃ after mixing; adding a treating agent into the mixed solution which is uniformly mixed, so that the concentration of the treating agent in the acid oil produced liquid is 1000ppm, wherein the treating agent comprises an auxiliary agent (dimethyl sulfoxide 5%), a demulsifier (polyether demulsifier 30%), a viscosity reducer (sodium hexadecyl sulfonate 5%), methanol (20%), and the balance of water 40%;
after the treating agent is fully mixed with the acidified oil, pre-separating sewage in a front cavity of the high-frequency coalescing device, wherein the oil content of the separated sewage is 1000ppm, and the water content is 5.69%;
and (3) feeding the pre-separated acidified oil mixed solution into a rear cavity of the high-frequency coalescence device, wherein the electric field frequency is 10000Hz, and carrying out electric dehydration for 60min to obtain the treated acidified oil.
The GB/T8929-2006 crude oil water content detection method is adopted to detect the treated acidified oil, and the result shows that the water content of the treated acidified oil is 1.68%.
Example 2
Mixing the acid oil produced liquid and the sewage on the station according to the volume ratio of 2:1, and heating to 80 ℃ after mixing; adding a treating agent into the mixed solution which is uniformly mixed, so that the concentration of the treating agent in the acid oil produced liquid is 1500ppm, wherein the treating agent comprises an auxiliary agent (dimethyl sulfoxide 8%), a demulsifier (polyether demulsifier 35%), a viscosity reducer (sodium hexadecyl sulfonate 10%), methanol (20%), and the balance of water 27%;
After the treating agent is fully mixed with the acidified oil, pre-separating sewage in a front cavity of the high-frequency coalescing device, wherein the oil content of the separated sewage is 686ppm, and the water content is 5.23%;
And (3) feeding the pre-separated acidified oil mixed solution into a rear cavity of the high-frequency coalescence device, wherein the electric field frequency is 15000Hz, and carrying out electric dehydration for 100min to obtain the treated acidified oil.
The GB/T8929-2006 crude oil water content detection method is adopted to detect the treated acidified oil, and the result shows that the water content of the treated acidified oil is 1.28%.
Example 3
Mixing the acid oil produced liquid and the sewage on the station according to the volume ratio of 3:1, and heating to 90 ℃ after mixing; adding a treating agent into the mixed solution which is uniformly mixed, so that the concentration of the treating agent in the acid oil produced liquid is 2000ppm, wherein the treating agent comprises an auxiliary agent (dimethyl sulfoxide 10%), a demulsifier (polyether demulsifier 40%), a viscosity reducer (sodium hexadecyl sulfonate 10%), methanol (20%), and the balance of water (20%;
After the treating agent is fully mixed with the acidified oil, pre-separating sewage in a front cavity of the high-frequency coalescing device, wherein the oil content of the separated sewage is 362ppm, and the water content is 4.35%;
And (3) feeding the pre-separated acidified oil mixed solution into a rear cavity of a high-frequency coalescence device, wherein the electric field frequency is 20000Hz, and carrying out electric dehydration for 150min to obtain the treated acidified oil.
The GB/T8929-2006 crude oil water content detection method is adopted to detect the treated acidified oil, and the result shows that the water content of the treated acidified oil is 0.24%.
Example 4
Mixing the acid oil produced liquid and the sewage on the station according to the volume ratio of 1:1, and heating to 60 ℃ after mixing; adding a treating agent into the mixed solution which is uniformly mixed, so that the concentration of the treating agent in the acid oil produced liquid is 2000ppm, wherein the treating agent comprises an auxiliary agent (dimethyl sulfoxide 5%), a demulsifier (polyether demulsifier 40%), a viscosity reducer (sodium hexadecyl sulfonate 10%), methanol (20%), and the balance of water 25%;
After the treating agent is fully mixed with the acidified oil, pre-separating sewage in a front cavity of the high-frequency coalescing device, wherein the oil content of the separated sewage is 268ppm, and the water content is 5.19%;
And (3) feeding the pre-separated acidified oil mixed solution into a rear cavity of a high-frequency coalescence device, wherein the electric field frequency is 20000Hz, and carrying out electric dehydration for 120min to obtain the treated acidified oil.
The GB/T8929-2006 crude oil water content detection method is adopted to detect the treated acidified oil, and the result shows that the water content of the treated acidified oil is 1.46%.
Example 5
Mixing the acid oil produced liquid and the sewage on the station according to the volume ratio of 1:1, and heating to 45 ℃ after mixing; adding a treating agent into the mixed solution which is uniformly mixed, so that the concentration of the treating agent in the acid oil produced liquid is 4000ppm, wherein the treating agent comprises an auxiliary agent (dimethyl sulfoxide 10%), a demulsifier (polyether demulsifier 35%), a viscosity reducer (sodium hexadecyl sulfonate 10%), methanol (20%), and the balance of water 25%;
After the treating agent is fully mixed with the acidified oil, pre-separating sewage in a front cavity of the high-frequency coalescing device, wherein the oil content of the separated sewage is 299ppm, and the water content is 3.26%;
And (3) feeding the pre-separated acidified oil mixed solution into a rear cavity of a high-frequency coalescence device, wherein the electric field frequency is 20000Hz, and carrying out electric dehydration for 90min to obtain the treated acidified oil.
The GB/T8929-2006 crude oil water content detection method is adopted to detect the treated acidified oil, and the result shows that the water content of the treated acidified oil is 1.72%.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. The closed short-process treatment method of the acidified oil is characterized by comprising the following steps of:
Mixing the acid oil produced liquid, sewage and a treating agent, and pre-separating the obtained mixture in a front cavity of a high-frequency coalescing device to obtain an acid oil mixed liquid and sewage after primary separation; the oil content of the sewage after the preliminary separation is less than or equal to 1000ppm;
Placing the acidified oil mixed solution in a rear cavity of the high-frequency coalescing device, and performing electric field enhanced demulsification and dehydration to obtain treated acidified oil;
The treating agent comprises the following components in percentage by mass: 5-10% of auxiliary agent, 30-40% of demulsifier, 5-10% of viscosity reducer, 20-30% of solvent and the balance of water;
the auxiliary agent comprises dimethyl sulfoxide; the demulsifier comprises polyether demulsifier;
the viscosity reducer comprises sodium hexadecyl sulfonate; the solvent comprises methanol;
the closed short-process treatment method does not comprise sedimentation separation.
2. The method according to claim 1, wherein the volume ratio of the acid oil production liquid to the sewage is (1-3): 1.
3. The method of claim 1, wherein the concentration of the treating agent in the acidified oil is from 500ppm to 5000ppm.
4. The process according to claim 1, characterized in that the high-frequency coalescing device is internally provided with coalescing material.
5. The method according to claim 1, wherein the electric field frequency of the electric field enhanced demulsification and dehydration is 10000-20000 Hz for 50-250 min.
6. The method according to claim 1, wherein the water content of the treated acidified oil is 2% or less.
7. The method of claim 1, wherein mixing the acid oil production fluid, the sewage, and the treating agent comprises mixing the acid oil production fluid and the sewage, then heating the mixture, and mixing the mixture with the treating agent.
8. The method according to claim 7, wherein the temperature of the heat treatment is 45 to 90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211320564.4A CN115746904B (en) | 2022-10-26 | Closed short-process treatment method for acidized oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211320564.4A CN115746904B (en) | 2022-10-26 | Closed short-process treatment method for acidized oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115746904A CN115746904A (en) | 2023-03-07 |
| CN115746904B true CN115746904B (en) | 2024-07-02 |
Family
ID=
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819380A (en) * | 2018-08-08 | 2020-02-21 | 中国石油化工股份有限公司 | Crude oil demulsification method |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819380A (en) * | 2018-08-08 | 2020-02-21 | 中国石油化工股份有限公司 | Crude oil demulsification method |
Non-Patent Citations (2)
| Title |
|---|
| 移动式老化油处理装置;孙志英;;油气田地面工程;20130401(04);115-116 * |
| 联合站老化油成因分析与处理方法;刘才琴;童倚勤;李祥珠;;山东工业技术;20160801(15);265 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wan et al. | Treatment of high concentration phenolic waste water by liquid membrane with N503 as mobile carrier | |
| CA1141253A (en) | Demulsification of emulsions produced from surfactant recovery operations and recovery of surfactants therefrom | |
| RU2543224C2 (en) | Acid composition for treatment of wells in carbonate and terrigenous reservoirs, and acid treatment method of bottom-hole zone of formation with its application | |
| CN102826728A (en) | Cleaning agent for treating oily sludge by using hot washing method and preparation method of cleaning agent | |
| CN110698035A (en) | Comprehensive treatment method of polymer-containing oil sludge | |
| CN112374707B (en) | Oily sludge treatment liquid, preparation method thereof and oily sludge treatment method | |
| CN108558154A (en) | The immediate processing method of oily sludge | |
| CN115746904B (en) | Closed short-process treatment method for acidized oil | |
| US5152886A (en) | Method for improving heavy crude oils by reducing the asphaltene content of crude oils and oil-containing tar sands | |
| CN104556464B (en) | A kind of processing method of refinery alkaline residue | |
| CN105195034A (en) | Water-in-oil emulsion for preparing gas hydrate, and preparation method thereof | |
| US4518038A (en) | Method of extracting and reutilizing surfactants from emulsions using sulfonated alkyl benzenes and ethoxylated phenols | |
| CN107418616B (en) | Broad-spectrum type aging oil demulsifier and preparation method thereof | |
| US4516635A (en) | Method of extracting and reutilizing surfactants from emulsions with sulfonated alkyl benzenes and alcohols | |
| CN115746904A (en) | Closed short-flow treatment method for acidified oil | |
| CN107937020B (en) | Two-step efficient demulsification method for lipopeptide | |
| CN110104704A (en) | A kind of method and device of sour water processing sump oil | |
| CN104418473B (en) | A kind of oil-containing sludge recycling process | |
| US5401425A (en) | Recovering enhanced oil recovery surfactants by temperature cycling | |
| CN106745442B (en) | A kind of refinery basic sewage acidification reaction device and acidization tool | |
| CN108641745B (en) | Low-temperature crude oil demulsifier and preparation method thereof | |
| CN103937534A (en) | Acid-containing crude oil emulsification inhibitor | |
| CN114479912B (en) | Pretreatment method of crude oil containing organic sodium | |
| CN109516611A (en) | A kind of processing method of emulsion waste liquid | |
| CN104743753A (en) | Treatment method of coal direct liquefaction wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |