CN115196733B - Oilfield sewage treatment medicament and preparation method thereof - Google Patents
Oilfield sewage treatment medicament and preparation method thereof Download PDFInfo
- Publication number
- CN115196733B CN115196733B CN202210854725.1A CN202210854725A CN115196733B CN 115196733 B CN115196733 B CN 115196733B CN 202210854725 A CN202210854725 A CN 202210854725A CN 115196733 B CN115196733 B CN 115196733B
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- CN
- China
- Prior art keywords
- polyacrylamide
- sewage treatment
- sodium sulfite
- oilfield sewage
- refined salt
- 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.)
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- 239000010865 sewage Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000003814 drug Substances 0.000 title abstract description 10
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 65
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 46
- 150000003839 salts Chemical class 0.000 claims abstract description 35
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 125000000129 anionic group Chemical group 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 229940001482 sodium sulfite Drugs 0.000 claims description 28
- 229940101006 anhydrous sodium sulfite Drugs 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229920000620 organic polymer Polymers 0.000 abstract description 5
- 230000033558 biomineral tissue development Effects 0.000 abstract description 4
- 229940079593 drug Drugs 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000003921 oil Substances 0.000 description 7
- 238000005457 optimization Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to the technical field of oilfield sewage treatment medicines, in particular to an oilfield sewage treatment medicine and a preparation method thereof, wherein the oilfield sewage treatment medicine comprises refined salt, sodium sulfite and polyacrylamide as raw materials, and the oilfield sewage treatment medicine is prepared according to the following steps: firstly, starting a motor of a stirring tank at normal temperature and normal pressure, and keeping the rotating speed at 1300-1500 rpm; then adding the required amount of refined salt, sodium sulfite and polyacrylamide into a stirring tank in sequence, uniformly mixing and reacting for 25 to 35 minutes to obtain the oilfield sewage treatment agent. The invention has simple process, no limitation of production conditions, convenient production and low cost, and the high-efficiency novel organic polymer flocculant polyacrylamide has greatly improved sewage treatment effect, and the process can not only improve the solubility of the anionic polyacrylamide, but also meet the requirements of high mineralization resistance and high oil content of the flocculant.
Description
Technical Field
The invention relates to the technical field of oilfield sewage treatment medicines, in particular to an oilfield sewage treatment medicine and a preparation method thereof.
Background
The oil field sewage is a natural companion of petroleum, the crude oil must be removed from the water before being externally conveyed, the removed sewage is called oily sewage, and the oily sewage is treated by purification, oil removal, precipitation, filtration and the like and then is injected back into the stratum as injection water through equipment and a water injection well, so that the effects of maintaining stratum pressure, supplementing stratum energy and improving recovery ratio are achieved. The oilfield produced water is extracted from the stratum, the water contains a certain amount of crude oil, various medicaments are added in the exploitation process, meanwhile, the components are various along with factors such as high temperature, high mineralization degree, bacteria, harmful gas and the like, the diversity, complexity and instability of oilfield sewage are also caused, if the oilfield produced water is directly injected without treatment, corrosion, scaling and even scrapping are caused on pipeline equipment and underground pipe columns along the path, an oil layer is damaged, water injection amount is reduced and injection is not carried out, and the output of an oil well is further influenced. Therefore, the oily sewage is firstly purified and stabilized before being injected into the stratum, so that the oily sewage is free from corrosion, scaling and blockage, the requirements of prolonging the service life of pipeline equipment and preventing the stratum from being blocked are met, and the harm to the whole water injection system is minimized as far as possible.
Disclosure of Invention
The invention provides an oilfield sewage treatment medicament and a preparation method thereof, which overcome the defects of the prior art, can effectively improve the solubility of anionic polyacrylamide, and can also meet the requirements of high mineralization resistance and high oil content of a flocculant.
One of the technical schemes of the invention is realized by the following measures: the oilfield sewage treatment agent is prepared from the following raw materials of refined salt, sodium sulfite and polyacrylamide: firstly, starting a motor of a stirring tank at normal temperature and normal pressure, and keeping the rotating speed at 1300-1500 rpm; then adding the required amount of refined salt, sodium sulfite and polyacrylamide into a stirring tank in sequence, uniformly mixing and reacting for 25 to 35 minutes to obtain the oilfield sewage treatment agent.
The following are further optimizations and/or improvements to one of the above-described inventive solutions:
the adding weight ratio of the refined salt, sodium sulfite and polyacrylamide is 1:2:7.
The polyacrylamide is anionic polyacrylamide with molecular weight of 800-1200 ten thousand.
The sodium sulfite is anhydrous sodium sulfite.
The refined salt is refined edible salt.
The second technical scheme of the invention is realized by the following measures: the preparation method of the oilfield sewage treatment agent comprises the following steps: firstly, starting a motor of a stirring tank at normal temperature and normal pressure, and keeping the rotating speed at 1300-1500 rpm; then adding the required amount of refined salt, sodium sulfite and polyacrylamide into a stirring tank in sequence, uniformly mixing and reacting for 25 to 35 minutes to obtain the oilfield sewage treatment agent.
The following is a further optimization and/or improvement of the second technical scheme of the invention:
the adding weight ratio of the refined salt, sodium sulfite and polyacrylamide is 1:2:7.
The polyacrylamide is anionic polyacrylamide with molecular weight of 800-1200 ten thousand.
The sodium sulfite is anhydrous sodium sulfite.
The refined salt is refined edible salt.
The invention has simple process, no limitation of production conditions, convenient production and low cost, and the high-efficiency novel organic polymer flocculant polyacrylamide has greatly improved sewage treatment effect, and the process can not only improve the solubility of the anionic polyacrylamide, but also meet the requirements of high mineralization resistance and high oil content of the flocculant.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention. The various chemical reagents and chemical supplies mentioned in the invention are all commonly known and used in the prior art unless specified otherwise; the percentages in the invention are mass percentages unless specified otherwise; the solutions in the invention are aqueous solutions in which the solvent is water unless otherwise specified, for example, the hydrochloric acid solution is hydrochloric acid aqueous solution; the room temperature and the room temperature in the present invention generally refer to temperatures ranging from 15 ℃ to 25 ℃, and are generally defined as 25 ℃.
The invention is further described below with reference to examples:
example 1: the oilfield sewage treatment agent is prepared from the following raw materials of refined salt, sodium sulfite and polyacrylamide: firstly, starting a motor of a stirring tank at normal temperature and normal pressure, and keeping the rotating speed at 1300-1500 rpm; then adding the required amount of refined salt, sodium sulfite and polyacrylamide into a stirring tank in sequence, uniformly mixing and reacting for 25 to 35 minutes to obtain the oilfield sewage treatment agent.
Example 2: the oilfield sewage treatment agent is prepared from the following raw materials of refined salt, sodium sulfite and polyacrylamide: firstly, starting a motor of a stirring tank at normal temperature and normal pressure, and keeping the rotating speed at 1300 revolutions per minute or 1500 revolutions per minute; then adding the required amount of refined salt, sodium sulfite and polyacrylamide into a stirring tank in sequence, uniformly mixing and reacting for 25 minutes or 35 minutes to obtain the oilfield sewage treatment agent.
Example 3: as optimization of the embodiment, the addition weight ratio of the refined salt, the sodium sulfite and the polyacrylamide is 1:2:7.
Example 4: as an optimization of the above examples, the polyacrylamide was an anionic polyacrylamide with a molecular weight of 800 to 1200 tens of thousands.
Example 5: as an optimization of the above examples, the sodium sulfite was anhydrous sodium sulfite.
Example 6: as an optimization of the above embodiment, the refined salt is refined edible salt.
Example 7: the preparation method of the oilfield sewage treatment agent comprises the following steps: firstly, starting a motor of a stirring tank at normal temperature and normal pressure, and keeping the rotating speed at 1300-1500 rpm; then adding the required amount of refined salt, sodium sulfite and polyacrylamide into a stirring tank in sequence, uniformly mixing and reacting for 25 to 30 minutes to obtain the oilfield sewage treatment agent, wherein the adding weight ratio of the refined salt to the sodium sulfite to the polyacrylamide is 1:2:7.
In the invention, polyacrylamide (PAM) is a water-soluble high-molecular polymer, and when the PAM is added into liquid, the friction resistance between the liquid is effectively reduced, and the flocculation effect is obviously improved. Compared with the conventional flocculant, the flocculant adopts a hydrolysis process after photopolymerization and adiabatic polymerization, and has the advantages of good water solubility, good flocculation effect and the like. Among polyacrylamides, anionic Polyacrylamide (APAM) is the longest developed history, the most mature technology, and the most widely used. The advantages are obvious: the cost is far lower than that of cationic organic polymer flocculant and amphoteric organic polymer flocculant, and the flocculation effect is good and the process is mature. In addition, because of the active amide groups carried on the polymer chain, the anionic carboxyl groups can react with various substances physically and chemically, so that the polymer chain has excellent surface activity besides the characteristic of the polymer chain.
Example 8: the oilfield sewage treatment agent is prepared according to the following steps: firstly, starting a motor of a stirring tank at normal temperature and normal pressure, and keeping the rotating speed at 1300 revolutions per minute; then adding the required amount of refined salt, sodium sulfite and polyacrylamide into a stirring tank in sequence, uniformly mixing and reacting for 25 minutes to obtain the oilfield sewage treatment agent, wherein the adding weight ratio of the refined salt to the sodium sulfite to the polyacrylamide is 1:2:7.
Example 9: the oilfield sewage treatment agent is prepared according to the following steps: firstly, starting a motor of a stirring tank at normal temperature and normal pressure, and keeping the rotating speed at 1400 rpm; then adding the required amount of refined salt, sodium sulfite and polyacrylamide into a stirring tank in sequence, uniformly mixing and reacting for 30 minutes to obtain the oilfield sewage treatment agent, wherein the adding weight ratio of the refined salt to the sodium sulfite to the polyacrylamide is 1:2:7.
Example 10: the oilfield sewage treatment agent is prepared according to the following steps: firstly, starting a motor of a stirring tank at normal temperature and normal pressure, and keeping the rotating speed at 1500 rpm; then adding the required amount of refined salt, sodium sulfite and polyacrylamide into a stirring tank in sequence, uniformly mixing and reacting for 35 minutes to obtain the oilfield sewage treatment agent, wherein the adding weight ratio of the refined salt to the sodium sulfite to the polyacrylamide is 1:2:7.
The oil field sewage treatment agent obtained in example 9 was subjected to Kramay oil extraction first-plant sewage station water quality index detection and water body index analysis, and the data are shown in tables 1 and 2, respectively.
As can be seen from Table 1, the water quality after the treatment of the oilfield sewage treatment agent of the present invention is greatly improved.
As can be seen from Table 2, the treated sewage meets the requirements in all indexes.
In conclusion, the process is simple, production conditions are not limited, production is convenient, cost is low, and the high-efficiency novel organic polymer flocculant polyacrylamide has a greatly improved sewage treatment effect.
The technical characteristics form the embodiment of the invention, have stronger adaptability and implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (2)
1. The oilfield sewage treatment agent is characterized by being prepared from the following raw materials of refined salt, sodium sulfite and polyacrylamide: firstly, starting a motor of a stirring tank at normal temperature and normal pressure, and keeping the rotating speed at 1300-1500 rpm; then adding the required amount of refined salt, sodium sulfite and polyacrylamide into a stirring tank in sequence, uniformly mixing and reacting for 25 to 35 minutes to obtain the oilfield sewage treatment agent, wherein the adding weight ratio of the refined salt to the sodium sulfite to the polyacrylamide is 1:2:7, the polyacrylamide is anionic polyacrylamide with the molecular weight of 800 to 1200 ten thousand, the sodium sulfite is anhydrous sodium sulfite, and the refined salt is refined edible salt.
2. The preparation method of the oilfield sewage treatment agent is characterized by comprising the following steps: firstly, starting a motor of a stirring tank at normal temperature and normal pressure, and keeping the rotating speed at 1300-1500 rpm; then adding the required amount of refined salt, sodium sulfite and polyacrylamide into a stirring tank in sequence, uniformly mixing and reacting for 25 to 35 minutes to obtain the oilfield sewage treatment agent, wherein the adding weight ratio of the refined salt to the sodium sulfite to the polyacrylamide is 1:2:7, the polyacrylamide is anionic polyacrylamide with the molecular weight of 800 to 1200 ten thousand, the sodium sulfite is anhydrous sodium sulfite, and the refined salt is refined edible salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210854725.1A CN115196733B (en) | 2022-07-20 | 2022-07-20 | Oilfield sewage treatment medicament and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210854725.1A CN115196733B (en) | 2022-07-20 | 2022-07-20 | Oilfield sewage treatment medicament and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115196733A CN115196733A (en) | 2022-10-18 |
| CN115196733B true CN115196733B (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210854725.1A Active CN115196733B (en) | 2022-07-20 | 2022-07-20 | Oilfield sewage treatment medicament and preparation method thereof |
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| Country | Link |
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| CN111410947A (en) * | 2020-03-20 | 2020-07-14 | 克拉玛依新科澳实验检测有限公司 | Composite wax-proofing agent and preparation method thereof |
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|---|---|---|---|---|
| SU1386584A1 (en) * | 1985-10-01 | 1988-04-07 | Челябинский Филиал Всесоюзного Научно-Исследовательского Института Водоснабжения,Канализации,Гидротехнических Сооружений И Инженерной Гидрогеологии "Водгео" | Method of purifying waste water of heavy metal compounds |
| CN101279786A (en) * | 2007-04-04 | 2008-10-08 | 中国石油化工股份有限公司 | Method for treatment of oil-bearing waste water |
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| CN104788595A (en) * | 2015-03-26 | 2015-07-22 | 中国石油大学(北京) | Polyacrylamide nano composite material as well as preparation method and application thereof |
| CN110563876A (en) * | 2019-09-05 | 2019-12-13 | 江苏富淼科技股份有限公司 | hydrophobic association anionic polyacrylamide water-in-oil emulsion and preparation method thereof |
| CA3051369A1 (en) * | 2019-08-07 | 2021-02-07 | Esa MIKKOLA | Method for treating produced water |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100155337A1 (en) * | 2008-12-18 | 2010-06-24 | High Grade Technology Co., Ltd. | Process of treating sewage in ternary combination flooding |
| US11046600B2 (en) * | 2018-07-11 | 2021-06-29 | Kemira Oyj | Method for treating produced water |
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2022
- 2022-07-20 CN CN202210854725.1A patent/CN115196733B/en active Active
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| SU1386584A1 (en) * | 1985-10-01 | 1988-04-07 | Челябинский Филиал Всесоюзного Научно-Исследовательского Института Водоснабжения,Канализации,Гидротехнических Сооружений И Инженерной Гидрогеологии "Водгео" | Method of purifying waste water of heavy metal compounds |
| CN101279786A (en) * | 2007-04-04 | 2008-10-08 | 中国石油化工股份有限公司 | Method for treatment of oil-bearing waste water |
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