CN110846000A - Emulsifier for oil-based drilling fluid and production process and application thereof - Google Patents
Emulsifier for oil-based drilling fluid and production process and application thereof Download PDFInfo
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- CN110846000A CN110846000A CN201810947781.3A CN201810947781A CN110846000A CN 110846000 A CN110846000 A CN 110846000A CN 201810947781 A CN201810947781 A CN 201810947781A CN 110846000 A CN110846000 A CN 110846000A
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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
- C09K8/035—Organic additives
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- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention relates to the technical field of auxiliary devices of oil-based drilling fluids, in particular to an emulsifier for oil-based drilling fluids, a production process and application thereof, wherein the emulsifier is prepared by carrying out addition, condensation and other multi-step reactions on the following raw materials in parts by weight: the product has good emulsion stability under different base fluids and different oil-water ratios, the temperature resistance of the product can reach more than 200 ℃, and the product overcomes the defects of unstable electric stability and rheological property of a conventional emulsifier after high temperature under the high temperature condition.
Description
Technical Field
The invention relates to the technical field of auxiliary devices of oil-based drilling fluids, in particular to an emulsifier for the oil-based drilling fluids and a production process and application thereof.
Background
As is well known, the emulsifier for the oil-based drilling fluid can improve the emulsion stability of the oil-based drilling fluid in the oil-based drilling fluid, has a certain fluid loss reducing effect, and is widely used in the fields of drilling operation and oil exploitation; the existing emulsifier for the oil-based drilling fluid is used by combining a main emulsifier and an auxiliary emulsifier in the oil-based drilling fluid; the conventional emulsifier for the oil-based drilling fluid is found in the use of the oil-based drilling fluid, is inconvenient to maintain, has low demulsification voltage, has large influence on the rheological property of the drilling fluid in a high-density system, is unstable in fluidity after high-temperature aging, and has large consumption of an auxiliary treating agent, so that the production cost is high.
Disclosure of Invention
In order to solve the technical problems, the invention provides the emulsifier for the oil-based drilling fluid, which is convenient to maintain, has good emulsification stability under different oil-water ratio conditions, has small influence on the rheological property before and after high-temperature aging, has stable rheological property, high demulsification voltage and low filtration loss, and can relatively reduce the dosage of other treating agents so as to reduce the overall cost of a system, and the production process and the application thereof.
The emulsifier for the base drilling fluid is prepared from the following raw materials in parts by weight: 50 parts of octadecenoic acid oxide, 10 parts of triethylene tetramine, 1 part of p-dodecylbenzene sulfonic acid, 10 parts of itaconic acid, 5 parts of liquid paraffin and 20 parts of solvent.
The emulsifier for the oil-based drilling fluid can be, but is not limited to, ethylene glycol monobutyl ether, diethylene glycol butyl ether, diethylene glycol methyl ether and the like.
The production process of the emulsifier for the oil-based drilling fluid comprises the following processing steps:
(1) opening a stirrer at normal temperature and normal pressure, adding 50 parts of octadecenoic acid oxide into a reaction kettle, heating, slowly adding 10 parts of triethylene tetramine when the temperature is raised to 50 ℃, heating to 170-200 ℃, and reacting for 4 hours;
(2) after the reaction is finished, cooling, adding 10 parts of itaconic acid when the temperature is reduced to 90 ℃, and reacting for 2 hours;
(3) after the reaction is finished, heating to 170-200 ℃ and reacting for 4 hours;
(4) after the reaction in the step (3) is finished, adding 5 parts of liquid paraffin and 20 parts of solvent into the reaction kettle, and stirring for 30min to obtain the emulsifier for the oil-based drilling fluid;
(5) and (4) metering the emulsifier obtained in the step (4), filling into a packaging barrel, sampling, detecting, and warehousing after the detection is qualified.
The production process of the emulsifier for the oil-based drilling fluid is characterized in that the rotating speed of the stirrer in the step (1) is 50-60 r/min.
The invention relates to an application of an emulsifier for oil-based drilling fluid, in particular to an application of the emulsifier for oil-based drilling fluid in white oil-based, diesel oil-based and gas oil-based drilling fluids.
Compared with the prior art, the invention has the beneficial effects that:
the emulsifier for the oil-based drilling fluid provided by the invention has the following advantages:
1. the emulsifier for the oil-based drilling fluid has good temperature resistance, and can resist the temperature of more than 200 ℃;
2. the emulsifier is beneficial to improving the emulsion stability of the oil-based drilling fluid and has good fluid loss reducing effect;
3. the base drilling fluid can be used independently without adding auxiliary emulsifier;
4. the influence on the rheological property in an oil-based drilling fluid system is small, and the thermal rolling is stable before and after, so that the product can be conveniently used under the conditions of high density and high temperature;
5. the product is nontoxic, and has no pollution emission in production and use;
6. the system prepared by the product has stable rheological property before and after high-temperature aging, high demulsification voltage and low filtration loss; the dosage of other treating agents can be reduced, so that the overall cost of the drilling fluid system is reduced;
7. the product overcomes the targeted defects of common emulsifiers, enhances the universality on the premise of ensuring the performance, and is suitable for white oil-based, diesel oil-based and synthetic-based drilling fluids.
The production process of the emulsifier provided by the invention has the following advantages:
1. the production process is closed, and no waste water or waste gas is discharged;
2. the product is a normal pressure reaction, and the safety is improved;
3. the product has simple production process and convenient operation, and reduces the labor cost.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The emulsifier for the base drilling fluid is prepared from the following raw materials in parts by weight: 50 parts of octadecenoic acid oxide, 10 parts of triethylene tetramine, 1 part of p-dodecylbenzene sulfonic acid, 10 parts of itaconic acid, 5 parts of liquid paraffin and 20 parts of solvent.
The emulsifier and the solvent for the oil-based drilling fluid can be, but are not limited to, ethylene glycol monobutyl ether, diethylene glycol butyl ether, diethylene glycol methyl ether and the like.
The production process of the emulsifier for the oil-based drilling fluid comprises the following processing steps:
(1) opening a stirrer at normal temperature and normal pressure, adding 50 parts of octadecenoic acid oxide into a reaction kettle, heating, slowly adding 10 parts of triethylene tetramine when the temperature is raised to 50 ℃, heating to 170-200 ℃, and reacting for 4 hours;
(2) after the reaction is finished, cooling, adding 10 parts of itaconic acid when the temperature is reduced to 90 ℃, and reacting for 2 hours;
(3) after the reaction is finished, heating to 170-200 ℃ and reacting for 4 hours;
(4) after the reaction in the step (3) is finished, adding 5 parts of liquid paraffin and 20 parts of solvent into the reaction kettle, and stirring for 30min to obtain the emulsifier for the oil-based drilling fluid;
(5) and (4) metering the emulsifier obtained in the step (4), filling into a packaging barrel, sampling, detecting, and warehousing after the detection is qualified.
The production process of the emulsifier for the oil-based drilling fluid is characterized in that the rotating speed of the stirrer in the step (1) is 50-60 r/min.
The invention relates to an application of an emulsifier for oil-based drilling fluid, in particular to an application of the emulsifier for oil-based drilling fluid in white oil-based, diesel oil-based and gas oil-based drilling fluids.
Example 1
The oil-based drilling fluid is prepared according to the following production process:
(1) opening a stirrer at normal temperature and normal pressure, adding 50 parts of octadecenoic acid oxide into the reaction kettle at the rotating speed of 55r/min, heating, slowly adding 10 parts of triethylene tetramine when the temperature is raised to 50 ℃, heating to 170 ℃, and reacting for 4 hours;
(2) after the reaction is finished, cooling, adding 10 parts of itaconic acid when the temperature is reduced to 90 ℃, and reacting for 2 hours;
(3) after the reaction is finished, heating to 170 ℃ and reacting for 4 hours;
(4) after the reaction in the step (2) is finished, adding 5 parts of naphtha and 20 parts of ethylene glycol monobutyl ether into a reaction kettle, and stirring for 30min to obtain an emulsifier for the oil-based drilling fluid;
(5) and (5) metering the emulsifier obtained in the step (4), filling the emulsifier into a packaging barrel, sampling and detecting, and warehousing after the emulsifier is qualified.
The emulsifiers obtained in the examples were used in diesel oil, white oil and gasoil, respectively, and the formulations were as follows:
formulation 1 #: 240mL of diesel oil, 14.0g of emulsifier, 2.0g of wetting agent, 6g of organic soil, 8.0g of lime (40 mL of 25% calcium chloride solution), 14.0g of natural asphalt and 750g of barite;
formulation 2 #: 240mL of white oil, 14.0g of emulsifier, 2.0g of wetting agent, 6g of organic soil, 8.0g of lime (40 mL of 25% calcium chloride solution), 14.0g of natural asphalt and 750g of barite;
formulation No. 3: 240mL of gassy oil, 14.0g of emulsifier, 2.0g of wetting agent, 6g of organic soil, 8.0g of lime (40 mL of 25% calcium chloride solution), 14.0g of natural asphalt and 750g of barite;
according to the conventional test method in the field, the demulsification voltage, the rheological property and the filtration loss before and after aging are respectively tested, the test is carried out at 68 ℃, the test is carried out at the high temperature of 200 ℃, and the test results are shown in the following table 1:
table 1.
1. Demulsification voltage: after aging, the 1#, 2#, 3# emulsion breaking voltage is stable, which shows that the emulsion stability is good.
2. Rheological property: after aging, the 1#, 2#, 3# plastic viscosity is reduced to some extent, the dynamic shear force variation amplitude is small, so that the rheological property of the drilling fluid becomes good after high temperature.
3. The filtration loss: after aging, the 1#, 2#, 3# high pressure filtration loss is below 10mL, and the field requirement can be met.
The emulsifier for the oil-based drilling fluid provided by the invention has the following advantages:
1. the emulsifier for the oil-based drilling fluid has good temperature resistance, and can resist the temperature of more than 200 ℃;
2. the emulsifier is beneficial to improving the emulsion stability of the oil-based drilling fluid and has good fluid loss reducing effect;
3. the base drilling fluid can be used independently without adding auxiliary emulsifier;
4. the influence on the rheological property in an oil-based drilling fluid system is small, and the thermal rolling is stable before and after, so that the product can be conveniently used under the conditions of high density and high temperature;
5. the product is nontoxic, and has no pollution emission in production and use;
6. the system prepared by the product has stable rheological property before and after high-temperature aging, high demulsification voltage and low filtration loss; the dosage of other treating agents can be reduced, so that the overall cost of the drilling fluid system is reduced;
7. the product overcomes the targeted defects of common emulsifiers, enhances the universality on the premise of ensuring the performance, and is suitable for white oil-based, diesel oil-based and synthetic-based drilling fluids.
The production process of the emulsifier provided by the invention has the following advantages:
1. the production process is closed, and no waste water or waste gas is discharged;
2. the product is a normal pressure reaction, and the safety is improved;
3. the product has simple production process and convenient operation, and reduces the labor cost.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The emulsifier for the oil-based drilling fluid is characterized by being prepared from the following raw materials in parts by weight: 50 parts of octadecenoic acid oxide, 10 parts of triethylene tetramine, 1 part of p-dodecylbenzene sulfonic acid, 10 parts of itaconic acid, 5 parts of liquid paraffin and 20 parts of solvent.
2. The emulsifier for oil-based drilling fluids according to claim 1, wherein the solvent is selected from the group consisting of ethylene glycol monobutyl ether, diethylene glycol butyl ether, and diethylene glycol methyl ether.
3. The process for producing an emulsifier for oil-based drilling fluids according to claims 1-2, comprising the following processing steps:
(1) opening a stirrer at normal temperature and normal pressure, adding 50 parts of octadecenoic acid oxide into a reaction kettle, heating, slowly adding 10 parts of triethylene tetramine when the temperature is raised to 50 ℃, heating to 170-200 ℃, and reacting for 4 hours;
(2) after the reaction is finished, cooling, adding 10 parts of itaconic acid when the temperature is reduced to 90 ℃, and reacting for 2 hours;
(3) after the reaction is finished, heating to 170-200 ℃ and reacting for 4 hours;
(4) after the reaction in the step (3) is finished, adding 5 parts of liquid paraffin and 20 parts of solvent into the reaction kettle, and stirring for 30min to obtain the emulsifier for the oil-based drilling fluid;
(5) and (4) metering the emulsifier obtained in the step (4), filling into a packaging barrel, sampling, detecting, and warehousing after the detection is qualified.
4. The process for producing an emulsifier for an oil-based drilling fluid according to claim 3, wherein the rotation speed of the stirrer in the step (1) is 50 to 60 r/min.
5. Use of the emulsifier for oil-based drilling fluids, characterized in that the emulsifier for oil-based drilling fluids obtained by the emulsifier for oil-based drilling fluids described in claims 1 to 2 and the process for producing the emulsifier for oil-based drilling fluids described in claims 3 to 4 is used in diesel oil, white oil and synthetic oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947781.3A CN110846000A (en) | 2018-08-20 | 2018-08-20 | Emulsifier for oil-based drilling fluid and production process and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810947781.3A CN110846000A (en) | 2018-08-20 | 2018-08-20 | Emulsifier for oil-based drilling fluid and production process and application thereof |
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| CN110846000A true CN110846000A (en) | 2020-02-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115029111A (en) * | 2022-06-22 | 2022-09-09 | 大庆华营化工有限公司 | Oil-based drilling fluid emulsifier and preparation method thereof |
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| US6780209B1 (en) * | 2000-01-24 | 2004-08-24 | The Lubrizol Corporation | Partially dehydrated reaction product process for making same, and emulsion containing same |
| US20090227478A1 (en) * | 2008-03-07 | 2009-09-10 | Elementis Specialties, Inc. | Equivalent circulating density control in deep water drilling |
| CN103980869A (en) * | 2014-04-22 | 2014-08-13 | 中国石油化工集团公司 | Solid emulsifier used for oil base drilling fluid, preparation method thereof and application of oil base drilling fluid |
| CN105524601A (en) * | 2015-11-26 | 2016-04-27 | 天津滨海新区普瑞德石油科技有限公司 | Emulsifier composition and preparation method thereof |
| CN105907381A (en) * | 2016-04-22 | 2016-08-31 | 中国石油集团川庆钻探工程有限公司 | Polyamide auxiliary emulsifier for oil-based drilling fluid and preparation method thereof |
| CN106367041A (en) * | 2016-08-22 | 2017-02-01 | 天津博科瑞精细化学有限公司 | Emulsifier used for oil-based drilling fluids, and production technology and application thereof |
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2018
- 2018-08-20 CN CN201810947781.3A patent/CN110846000A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6780209B1 (en) * | 2000-01-24 | 2004-08-24 | The Lubrizol Corporation | Partially dehydrated reaction product process for making same, and emulsion containing same |
| US20090227478A1 (en) * | 2008-03-07 | 2009-09-10 | Elementis Specialties, Inc. | Equivalent circulating density control in deep water drilling |
| CN103980869A (en) * | 2014-04-22 | 2014-08-13 | 中国石油化工集团公司 | Solid emulsifier used for oil base drilling fluid, preparation method thereof and application of oil base drilling fluid |
| CN105524601A (en) * | 2015-11-26 | 2016-04-27 | 天津滨海新区普瑞德石油科技有限公司 | Emulsifier composition and preparation method thereof |
| CN105907381A (en) * | 2016-04-22 | 2016-08-31 | 中国石油集团川庆钻探工程有限公司 | Polyamide auxiliary emulsifier for oil-based drilling fluid and preparation method thereof |
| CN106367041A (en) * | 2016-08-22 | 2017-02-01 | 天津博科瑞精细化学有限公司 | Emulsifier used for oil-based drilling fluids, and production technology and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115029111A (en) * | 2022-06-22 | 2022-09-09 | 大庆华营化工有限公司 | Oil-based drilling fluid emulsifier and preparation method thereof |
| CN115029111B (en) * | 2022-06-22 | 2023-12-15 | 大庆华营化工有限公司 | Oil-based drilling fluid emulsifier and preparation method thereof |
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Application publication date: 20200228 |