CN114891164A - Oil-water separating agent for super heavy oil SAGD (steam assisted gravity drainage) produced liquid and preparation method thereof - Google Patents
Oil-water separating agent for super heavy oil SAGD (steam assisted gravity drainage) produced liquid and preparation method thereof Download PDFInfo
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- CN114891164A CN114891164A CN202210536950.0A CN202210536950A CN114891164A CN 114891164 A CN114891164 A CN 114891164A CN 202210536950 A CN202210536950 A CN 202210536950A CN 114891164 A CN114891164 A CN 114891164A
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/04—Dewatering or demulsification of hydrocarbon oils with chemical means
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Abstract
The invention discloses an oil-water separating agent for super heavy oil SAGD produced liquid and a preparation method thereof, the oil-water separating agent for super heavy oil SAGD produced liquid consists of a demulsifier monomer, acrylic acid, maleic anhydride, a catalyst, an initiator and short-chain alcohol, the demulsifier monomer is one of alkyl phenolic resin polyoxypropylene polyoxyethylene block polyether or phenolic amine aldehyde resin polyoxypropylene polyoxyethylene block polyether, and the preparation process comprises the following steps: mixing a solvent with a demulsifier monomer, acrylic acid and a catalyst, reacting for 4-5h at 120-139 ℃, cooling to 80 ℃, slowly adding dibenzoyl peroxide, reacting for 5-6h, adding maleic anhydride, heating to 149 ℃, reacting for 1-1.5h, cooling to 40 ℃, adding short-chain alcohol, and adjusting the pH value to obtain the liquid-oil-water separating agent produced by the super-heavy oil SAGD. The invention has the characteristics of simple process, less energy consumption, less environmental pollution and good oil-water separation effect, and the prepared super heavy oil SAGD produced liquid oil-water separating agent has high dehydration speed, less oil in water, less dosage and wide application temperature range.
Description
Technical Field
The invention relates to the technical field of oil extraction and water separation of super heavy oil in an oil field, in particular to an oil-water separating agent for super heavy oil SAGD production liquid and a preparation method thereof. .
Background
Steam Assisted Gravity Drainage (SAGD) is an effective development mode for improving the recovery efficiency of a medium-deep layer super heavy oil reservoir. Injecting a certain amount of high-temperature high-dryness steam into the injection well, heating crude oil in the oil reservoir to reduce the viscosity and ensure the mobility of the crude oil, and extracting the crude oil in the production well. The steam exchanges heat with the crude oil in the oil reservoir, and is condensed into high-temperature water to form an oil-water mixture with the crude oil, the oil-water mixture is emulsified uniformly, and the content of asphaltene and colloid in the super heavy oil is high, so that the performance of a mixed solution is more stable, the oil-water separation on the ground is difficult, and the oil-water separation cost is further increased.
At present, various thick oil demulsifiers are developed at home and abroad, mostly polyether demulsifiers are mainly used, and the polyether demulsifiers are improved and compounded according to the crude oil property and the exploitation mode of each oil field, so that good effects are achieved.
Therefore, it is necessary to invent an oil-water separating agent for super heavy oil SAGD produced liquid and a preparation method thereof to solve the problems. .
Disclosure of Invention
The invention aims to provide an oil-water separating agent for the liquid produced by the super heavy oil SAGD and a preparation method thereof, which realize the processes of flocculation, drainage, coalescence, separation and the like by changing the property of an oil-water interface, and have the advantages of high separation efficiency, small medicament dosage, low cost, less energy consumption of on-site oil-water separation, high dehydration speed, low water content in the separated oil and less oil in water, so as to solve the defects in the technology.
In order to achieve the above purpose, the invention provides the following technical scheme: the oil-water separating agent for the liquid produced by the super heavy oil SAGD consists of a demulsification monomer, acrylic acid, maleic anhydride, a catalyst, an initiator and short-chain alcohol;
the demulsifier monomer and acrylic acid have the following component proportion: emulsion breaker monomer: acrylic acid mass ratio =2: 1-7: 1, the component ratio of acrylic acid to maleic anhydride is as follows: acrylic acid: the mass ratio of the maleic anhydride is =2:1-4:1, the catalyst is 0.5-1.0% of the total mass of the demulsifier monomer and the acrylic acid, the mass of the initiator is 0.1-0.4% of the total mass of the demulsifier monomer and the propionic acid, and the mass of the short-chain alcohol is 5-20% of the mass of the demulsifier monomer and the propionic acid.
Preferably, the component proportion of the demulsifier monomer to acrylic acid is as follows: emulsion breaker monomer: acrylic acid mass ratio =4: 1-6: 1, the component ratio of acrylic acid to maleic anhydride is as follows: acrylic acid: the mass ratio of the maleic anhydride is =3:1-4:1, the catalyst is 0.6-0.8% of the total mass of the demulsifier monomer and the acrylic acid, the mass of the initiator is 0.2-0.3% of the total mass of the demulsifier monomer and the propionic acid, and the mass of the short-chain alcohol is 6-10% of the mass of the demulsifier monomer and the propionic acid.
Preferably, the catalyst is one of concentrated sulfuric acid or p-toluenesulfonic acid, the initiator is dibenzoyl peroxide, and the short-chain alcohol is one of methanol, ethanol and ethylene glycol.
Preferably, the demulsifier monomer is one of alkylphenol aldehyde resin polyoxypropylene polyoxyethylene block polyether or phenol amine aldehyde resin polyoxypropylene polyoxyethylene block polyether.
The preparation method for the oil-water separating agent of the liquid produced by the super heavy oil SAGD comprises the following specific operation steps:
the method comprises the following steps: sequentially adding a certain amount of solvent, demulsifier monomer, acrylic acid and catalyst into a four-necked flask provided with a reflux condenser, a thermometer and a stirrer, and uniformly stirring;
step two: slowly heating the mixture to 120 ℃, then heating to 130 ℃ in 1h, heating to 139 ℃ in 1h, reacting for 2-3h at 139 ℃, and accumulating the reaction time for 4-5h at 120-139 ℃ to obtain an intermediate product;
step three: cooling the intermediate product in the second step to 80 ℃, slowly adding an initiator dibenzoyl peroxide, adding in batches for 0.5h, and reacting for 5-6 h;
step four: adding maleic anhydride into the materials, uniformly stirring, gradually heating to 149 ℃, and reacting at constant temperature for 1-1.5 h;
step five: cooling to 40 ℃, adding short-chain alcohol, and uniformly stirring;
step six: and adding a pH regulator to enable the pH value to be 7, and obtaining the oil-water separating agent for the liquid produced by the super heavy oil SAGD.
Preferably, the solvent in the first step is xylene, and the pH adjusting agent in the sixth step is triethylamine.
In the technical scheme, the invention has the following technical effects and advantages:
the novel oil-water-sand three-phase separating agent for the super-thick oil SAGD is prepared by mixing a solvent, a demulsifier monomer, acrylic acid and a catalyst, reacting for 4-5 hours at 139 ℃ of 120 plus materials, cooling to 80 ℃, adding dibenzoyl peroxide, reacting for 5-6 hours, adding maleic anhydride, heating to 149 ℃, reacting for 1-1.5 hours, cooling, adding short-chain alcohol, and adjusting pH.
Detailed Description
The present invention will be described in further detail below in order to enable those skilled in the art to better understand the technical solution of the present invention.
The invention provides an oil-water separating agent for an SAGD (steam assisted gravity drainage) produced liquid of super-heavy oil, which consists of a demulsification monomer, acrylic acid, maleic anhydride, a catalyst, an initiator and short-chain alcohol;
the demulsifier monomer and acrylic acid have the following component proportion: emulsion breaker monomer: acrylic acid mass ratio =2: 1-7: 1, the component ratio of acrylic acid to maleic anhydride is as follows: acrylic acid: the mass ratio of the maleic anhydride is =2:1-4:1, the catalyst is 0.5-1.0% of the total mass of the demulsifier monomer and the acrylic acid, the mass of the initiator is 0.1-0.4% of the total mass of the demulsifier monomer and the propionic acid, and the mass of the short-chain alcohol is 5-20% of the mass of the demulsifier monomer and the propionic acid.
Preferably, the component proportion of the demulsifier monomer to acrylic acid is as follows: emulsion breaker monomer: acrylic acid mass ratio =4: 1-6: 1, the component ratio of acrylic acid to maleic anhydride is as follows: acrylic acid: the mass ratio of the maleic anhydride is =3:1-4:1, the catalyst is 0.6-0.8% of the total mass of the demulsifier monomer and the acrylic acid, the mass of the initiator is 0.2-0.3% of the total mass of the demulsifier monomer and the propionic acid, and the mass of the short-chain alcohol is 6-10% of the mass of the demulsifier monomer and the propionic acid.
Preferably, the catalyst is one of concentrated sulfuric acid or p-toluenesulfonic acid, the initiator is dibenzoyl peroxide, and the short-chain alcohol is one of methanol, ethanol and ethylene glycol.
Preferably, the demulsifier monomer is one of alkylphenol aldehyde resin polyoxypropylene polyoxyethylene block polyether or phenol amine aldehyde resin polyoxypropylene polyoxyethylene block polyether.
The preparation method for the oil-water separating agent of the liquid produced by the super heavy oil SAGD comprises the following specific operation steps:
the method comprises the following steps: sequentially adding a certain amount of solvent, demulsifier monomer, acrylic acid and catalyst into a four-necked flask provided with a reflux condenser, a thermometer and a stirrer, and uniformly stirring;
step two: slowly heating the mixture to 120 ℃, then heating to 130 ℃ in 1h, heating to 139 ℃ in 1h, reacting for 2-3h at 139 ℃, and accumulating the reaction time for 4-5h at 120-139 ℃ to obtain an intermediate product;
step three: cooling the intermediate product in the second step to 80 ℃, slowly adding an initiator dibenzoyl peroxide, adding in batches for 0.5h, and reacting for 5-6 h;
step four: adding maleic anhydride into the materials, uniformly stirring, gradually heating to 149 ℃, and reacting at constant temperature for 1-1.5 h;
step five: cooling to 40 ℃, adding short-chain alcohol, and uniformly stirring;
step six: and adding a pH regulator to enable the pH value to be 7, and obtaining the oil-water separating agent for the liquid produced by the super heavy oil SAGD.
Preferably, the solvent in the first step is xylene, and the pH adjusting agent in the sixth step is triethylamine.
Example 1:
the invention provides an oil-water separating agent for an SAGD (steam assisted gravity drainage) produced liquid of super-heavy oil, which consists of a demulsification monomer, acrylic acid, maleic anhydride, a catalyst, an initiator and short-chain alcohol;
the demulsifier monomer and acrylic acid have the following component proportion: emulsion breaker monomer: acrylic acid mass ratio =4:1, the component ratio of acrylic acid to maleic anhydride is as follows: acrylic acid: the mass ratio of the maleic anhydride is =3:1, the catalyst is 0.6% of the total mass of the demulsifier monomer and the acrylic acid, the mass of the initiator is 0.2% of the total mass of the demulsifier monomer and the propionic acid, and the mass of the short-chain alcohol is 6% of the mass of the demulsifier monomer and the propionic acid.
Preferably, the catalyst is concentrated sulfuric acid, the initiator is dibenzoyl peroxide, and the short-chain alcohol is methanol.
Preferably, the demulsifier monomer is alkylphenol formaldehyde resin polyoxypropylene polyoxyethylene block polyether.
The preparation method for the oil-water separating agent of the liquid produced by the super heavy oil SAGD comprises the following specific operation steps:
the method comprises the following steps: sequentially adding a certain amount of dimethylbenzene, a demulsifier monomer, acrylic acid and a catalyst into a four-necked flask provided with a reflux condenser tube, a thermometer and a stirrer, and uniformly stirring;
step two: slowly heating the mixture to 120 ℃, then heating to 130 ℃ in 1h, heating to 139 ℃ in 1h, and reacting for 2h at 139 ℃ to obtain an intermediate product;
step three: cooling the intermediate product in the second step to 80 ℃, slowly adding an initiator dibenzoyl peroxide into the intermediate product in three times, wherein the adding time is 0.5h, and reacting for 5 h;
step four: adding maleic anhydride into the materials, uniformly stirring, gradually heating to 149 ℃, and reacting at constant temperature for 1 h;
step five: cooling to 40 ℃, adding methanol, and uniformly stirring;
step six: and adding triethylamine as a pH regulator to enable the pH value to reach 7, thereby obtaining the oil-water separating agent for the liquid produced by the super heavy oil SAGD.
Example 2:
the invention provides an oil-water separating agent for an SAGD (steam assisted gravity drainage) produced liquid of super-heavy oil, which consists of a demulsification monomer, acrylic acid, maleic anhydride, a catalyst, an initiator and short-chain alcohol;
the demulsifier monomer and acrylic acid have the following component proportion: emulsion breaker monomer: acrylic acid mass ratio = 5:1, the component ratio of acrylic acid to maleic anhydride is as follows: acrylic acid: the mass ratio of the maleic anhydride is =3.5:1, the catalyst is 0.7% of the total mass of the demulsifier monomer and the acrylic acid, the mass of the initiator is 0.2% of the total mass of the demulsifier monomer and the propionic acid, and the mass of the short-chain alcohol is 6% of the mass of the demulsifier monomer and the propionic acid.
Preferably, the catalyst is p-toluenesulfonic acid, the initiator is dibenzoyl peroxide, and the short-chain alcohol is methanol.
Preferably, the demulsifier monomer is phenolic amine aldehyde resin polyoxypropylene polyoxyethylene block polyether.
The preparation method for the oil-water separating agent of the liquid produced by the super heavy oil SAGD comprises the following specific operation steps:
the method comprises the following steps: sequentially adding a certain amount of dimethylbenzene, a demulsifier monomer, acrylic acid and a catalyst into a four-necked flask provided with a reflux condenser tube, a thermometer and a stirrer, and uniformly stirring;
step two: slowly heating the mixture to 120 ℃, then heating to 130 ℃ in 1h, heating to 139 ℃ in 1h, and reacting for 3h at 139 ℃ to obtain an intermediate product;
step three: cooling the intermediate product in the second step to 80 ℃, slowly adding an initiator dibenzoyl peroxide into the intermediate product in three times, wherein the adding time is 0.5h, and reacting for 6 h;
step four: adding maleic anhydride into the materials, uniformly stirring, gradually heating to 149 ℃, and reacting at constant temperature for 1.5 h;
step five: cooling to 40 ℃, adding methanol, and uniformly stirring;
step six: and adding triethylamine as a pH regulator to enable the pH value to reach 7, thereby obtaining the oil-water separating agent for the liquid produced by the super heavy oil SAGD.
Example 3:
the invention provides an oil-water separating agent for an SAGD (steam assisted gravity drainage) produced liquid of super-heavy oil, which consists of a demulsification monomer, acrylic acid, maleic anhydride, a catalyst, an initiator and short-chain alcohol;
the demulsifier monomer and acrylic acid have the following component proportion: emulsion breaker monomer: acrylic acid mass ratio = 6: 1, the component ratio of acrylic acid to maleic anhydride is as follows: acrylic acid: the mass ratio of the maleic anhydride is =4:1, the catalyst is 0.8% of the total mass of the demulsifier monomer and the acrylic acid, the mass of the initiator is 0.3% of the total mass of the demulsifier monomer and the propionic acid, and the mass of the short-chain alcohol is 10% of the mass of the demulsifier monomer and the propionic acid.
Preferably, the catalyst is p-toluenesulfonic acid, the initiator is dibenzoyl peroxide, and the short-chain alcohol is ethylene glycol.
Preferably, the demulsifier monomer is phenolic amine aldehyde resin polyoxypropylene polyoxyethylene block polyether.
The preparation method for the oil-water separating agent of the liquid produced by the super heavy oil SAGD comprises the following specific operation steps:
the method comprises the following steps: sequentially adding a certain amount of dimethylbenzene, a demulsifier monomer, acrylic acid and a catalyst into a four-necked flask provided with a reflux condenser tube, a thermometer and a stirrer, and uniformly stirring;
step two: slowly heating the mixture to 120 ℃, then heating to 130 ℃ in 1h, heating to 139 ℃ in 1h, and reacting for 2h at 139 ℃ to obtain an intermediate product;
step three: cooling the intermediate product in the second step to 80 ℃, slowly adding an initiator dibenzoyl peroxide into the intermediate product in three times, wherein the adding time is 0.5h, and reacting for 5 h;
step four: adding maleic anhydride into the materials, uniformly stirring, gradually heating to 149 ℃, and reacting at constant temperature for 1 h;
step five: cooling to 40 ℃, adding ethylene glycol, and stirring uniformly;
step six: and adding triethylamine as a pH regulator to enable the pH value to reach 7, thereby obtaining the oil-water separating agent for the liquid produced by the super heavy oil SAGD.
To sum up, the embodiment proves that the oil-water separating agent for the super heavy oil SAGD output liquid and the preparation method thereof have the advantages of high oil-water separating speed, wide adaptive temperature range and low water content in oil, little oil in water and small using amount after oil-water separation, wherein the oil-water separating agent is used for the oil-water separation of the super heavy oil SAGD output liquid, and the oil-water separating agent is used for separating oil from waterApplying (a) toIn example 3, the raw material proportion is moderate, the processing temperature is moderate, the processing time is proper, and the performance of the prepared liquid oil-water separating agent produced by the super heavy oil SAGD reaches the best.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Therefore, the above description is illustrative in nature and should not be construed as limiting the scope of the invention, which is defined by the appended claims, and any modifications, equivalents, improvements and the like, which come within the spirit and scope of the invention are intended to be embraced therein.
Claims (6)
1. The oil-water separating agent for the super heavy oil SAGD production liquid is characterized in that: the oil-water separating agent for the liquid produced by the super heavy oil SAGD consists of a demulsification monomer, acrylic acid, maleic anhydride, a catalyst, an initiator and short-chain alcohol;
the demulsifier monomer and acrylic acid have the following component proportion: emulsion breaker monomer: acrylic acid mass ratio =2: 1-7: 1, the component ratio of acrylic acid to maleic anhydride is as follows: acrylic acid: the mass ratio of the maleic anhydride is =2:1-4:1, the catalyst is 0.5-1.0% of the total mass of the demulsifier monomer and the acrylic acid, the mass of the initiator is 0.1-0.4% of the total mass of the demulsifier monomer and the propionic acid, and the mass of the short-chain alcohol is 5-20% of the mass of the demulsifier monomer and the propionic acid.
2. The oil-water separating agent for the super heavy oil SAGD production liquid as claimed in claim 1, wherein: the demulsifier monomer and acrylic acid have the following component proportion: emulsion breaker monomer: acrylic acid mass ratio =4: 1-6: 1, the component ratio of acrylic acid to maleic anhydride is as follows: acrylic acid: the mass ratio of the maleic anhydride is =3:1-4:1, the catalyst is 0.6-0.8% of the total mass of the demulsifier monomer and the acrylic acid, the mass of the initiator is 0.2-0.3% of the total mass of the demulsifier monomer and the propionic acid, and the mass of the short-chain alcohol is 6-10% of the mass of the demulsifier monomer and the propionic acid.
3. The oil-water separator for super heavy oil SAGD production liquid according to claim 1, wherein: the catalyst is concentrated sulfuric acid or p-toluenesulfonic acid, the initiator is dibenzoyl peroxide, and the short-chain alcohol is methanol, ethanol or ethylene glycol.
4. The oil-water separating agent for the super heavy oil SAGD production liquid as claimed in claim 1, wherein: the demulsifier monomer is one of alkyl phenolic resin polyoxypropylene polyoxyethylene block polyether or phenolic amine aldehyde resin polyoxypropylene polyoxyethylene block polyether.
5. The preparation method of the oil-water separating agent for the liquid produced by the super heavy oil SAGD is characterized by comprising the following steps: the specific operation steps are as follows:
the method comprises the following steps: sequentially adding a certain amount of solvent, demulsifier monomer, acrylic acid and catalyst into a four-necked flask provided with a reflux condenser, a thermometer and a stirrer, and uniformly stirring;
step two: slowly heating the mixture to 120 ℃, then heating to 130 ℃ in 1h, heating to 139 ℃ in 1h, reacting for 2-3h at 139 ℃, and accumulating the reaction time for 4-5h at 120-139 ℃ to obtain an intermediate product;
step three: cooling the intermediate product in the second step to 80 ℃, slowly adding an initiator dibenzoyl peroxide, adding in batches for 0.5h, and reacting for 5-6 h;
step four: adding maleic anhydride into the materials, uniformly stirring, gradually heating to 149 ℃, and reacting at constant temperature for 1-1.5 h;
step five: cooling to 40 ℃, adding short-chain alcohol, and uniformly stirring;
step six: and adding a pH regulator to enable the pH value to be 7, and obtaining the oil-water separating agent for the liquid produced by the super heavy oil SAGD.
6. The method according to claim 5, wherein the method comprises the steps of: the solvent in the first step is xylene, and the pH regulator in the sixth step is triethylamine.
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| CN202210536950.0A CN114891164A (en) | 2022-05-18 | 2022-05-18 | Oil-water separating agent for super heavy oil SAGD (steam assisted gravity drainage) produced liquid and preparation method thereof |
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| CN202210536950.0A CN114891164A (en) | 2022-05-18 | 2022-05-18 | Oil-water separating agent for super heavy oil SAGD (steam assisted gravity drainage) produced liquid and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116023667A (en) * | 2022-12-28 | 2023-04-28 | 荆州市东泽化工科技有限公司 | Demulsifier and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116023667A (en) * | 2022-12-28 | 2023-04-28 | 荆州市东泽化工科技有限公司 | Demulsifier and preparation method and application thereof |
| CN116023667B (en) * | 2022-12-28 | 2024-02-20 | 荆州市东泽化工科技有限公司 | Demulsifier and preparation method and application thereof |
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