CN113604207A - Cleaning paraffin remover for oil field and preparation method thereof - Google Patents
Cleaning paraffin remover for oil field and preparation method thereof Download PDFInfo
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- CN113604207A CN113604207A CN202111061213.1A CN202111061213A CN113604207A CN 113604207 A CN113604207 A CN 113604207A CN 202111061213 A CN202111061213 A CN 202111061213A CN 113604207 A CN113604207 A CN 113604207A
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- percent
- water
- ammonium chloride
- trimethyl ammonium
- ethanol
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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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
Abstract
The invention discloses a clean paraffin remover for oil fields and a preparation method thereof, wherein the clean paraffin remover comprises the following components in percentage by mass: 5 to 10 percent of OP-10, 3 to 15 percent of hexadecyl trimethyl ammonium chloride, 10 to 15 percent of ethanol, 2 to 5 percent of sodium salicylate and 61 to 80 percent of water, wherein the total weight percentage of the components is 100 percent. The invention solves the problems of more times of well flushing, low oil production efficiency of the oil well and high oil production cost in the oil extraction process.
Description
Technical Field
The invention belongs to the technical field of fine chemical engineering of oil fields, relates to a clean paraffin remover for oil fields, and further relates to a preparation method of the clean paraffin remover for oil fields.
Background
The oil field is located in the northwest of China, the time that the air temperature is lower than the freezing point of crude oil is long, and a large amount of chemical additives for improving the fluidity of the crude oil, such as a paraffin removal and prevention agent, a pour point depressant, a drag reducer and the like, are required to be used in the processes of exploitation, collection and transportation of the crude oil every year when the air temperature is lower. The wax precipitation of most oil wells of the oil field is prolonged to be serious in winter, the oil extraction yield of the oil field is seriously influenced, in order to achieve the yield, a continuous wax removal and prevention measure is required, the operation frequency is high, and the operation cost is high, so that the efficient clean wax remover needs to be developed by starting from a crude oil wax precipitation principle and a wax removal and prevention mechanism and combining the wax sample analysis of the oil field.
Disclosure of Invention
The invention aims to provide a clean paraffin removal agent for an oil field, which solves the problems of more times of well flushing, low oil production efficiency of an oil well and high oil production cost in the oil extraction process.
The invention also aims to provide a preparation method of the clean paraffin remover for the oil field, which solves the problems of high production cost and environmental pollution in the prior art.
The technical scheme adopted by the invention is that the oil field cleaning paraffin remover comprises the following components in percentage by mass: 5 to 10 percent of OP-10, 3 to 15 percent of hexadecyl trimethyl ammonium chloride, 10 to 15 percent of ethanol, 2 to 5 percent of sodium salicylate and 61 to 80 percent of water, wherein the total weight percentage of the components is 100 percent.
The invention adopts another technical scheme that a preparation method of the clean paraffin remover for the oil field is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 5 to 10 percent of OP-10, 3 to 15 percent of hexadecyl trimethyl ammonium chloride, 10 to 15 percent of ethanol, 2 to 5 percent of sodium salicylate and 61 to 80 percent of water, wherein the total weight percentage of the components is 100 percent;
step 2, adding the OP-10 weighed in the step 1 into a part of water, stirring to dissolve the OP-10 to obtain an OP-10 solution;
step 3, adding the ethanol weighed in the step 1 into the rest water to obtain an ethanol solution, adding the hexadecyl trimethyl ammonium chloride weighed in the step 1 into the ethanol solution, and uniformly stirring to obtain a hexadecyl trimethyl ammonium chloride solution;
and 4, adding the OP-10 solution obtained in the step 2 into a hexadecyl trimethyl ammonium chloride solution, adding sodium salicylate, stirring uniformly, adding a pH regulator to adjust the pH value, and filling to obtain the cleaning wax remover.
The present invention is also characterized in that,
in the step 2, the stirring time is 30-50 min.
In the step 3, the stirring time is 10-20 min.
In the step 3, the mass concentration of the ethanol solution is 31.25-57.7%.
In step 4, the pH regulator adopts sodium hydroxide or sodium carbonate, and the pH value is 11.
The mass ratio of the water in the step 2 to the water in the step 3 is 50: 11-30.
The beneficial effect of the invention is that,
(1) the cleaning paraffin remover for the oil field can effectively dissolve the wax sample on the wall of the well bore, the wax dissolving rate of the wax sample reaches 0.034g/min, the wax prevention rate of the oil sample exceeds 30%, the well washing period can be prolonged, so that the well washing times are reduced, the oil production efficiency of an oil well is increased, the oil extraction cost is reduced, and the adopted raw materials have the characteristics of environmental protection and cleanness, are easy to obtain and have low cost;
(2) the preparation method of the cleaning paraffin remover for the oil field is simple in preparation process, high in safety and low in production cost, and can be prepared at normal temperature.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The invention provides a cleaning paraffin remover for oil fields, which comprises the following components in percentage by mass: 5 to 10 percent of OP-10, 3 to 15 percent of hexadecyl trimethyl ammonium chloride, 10 to 15 percent of ethanol, 2 to 5 percent of sodium salicylate and 61 to 80 percent of water, wherein the total weight percentage of the components is 100 percent.
The invention also provides a preparation method of the clean paraffin remover for the oil field, which is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 5-10% of OP-10, 3-15% of hexadecyl trimethyl ammonium chloride, 10-15% of ethanol, 2-5% of sodium salicylate and 61-80% of water, wherein the total weight percentage of the components is 100%;
step 2, adding the OP-10 weighed in the step 1 into a part of water, and stirring for 30-50 min to dissolve the OP-10 to obtain an OP-10 solution;
step 3, adding the ethanol weighed in the step 1 into the rest water to obtain an ethanol solution, adding the hexadecyl trimethyl ammonium chloride weighed in the step 1 into the solution, and stirring for 10-20 min to obtain a hexadecyl trimethyl ammonium chloride solution;
wherein the mass concentration of the ethanol solution is 31.25-57.7%;
and 4, adding the OP-10 solution obtained in the step 2 into a hexadecyl trimethyl ammonium chloride solution, adding sodium salicylate, stirring uniformly, adding sodium hydroxide or sodium carbonate to adjust the pH value to 11, and filling to obtain the cleaning wax remover.
Example 1
The invention provides a preparation method of a clean paraffin remover for oil fields, which is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 70kg of OP-10, 80kg of hexadecyl trimethyl ammonium chloride, 120kg of ethanol, 30kg of sodium salicylate and 700kg of water, wherein the total weight percentage of the components is 100 percent;
step 2, adding 70kg of OP-10 weighed in the step 1 into 500kg of water, and stirring for 40min to dissolve the OP-10 to obtain an OP-10 solution;
step 3, adding 120kg of ethanol weighed in the step 1 into the remaining 200kg of water to obtain an ethanol solution, adding 80kg of hexadecyl trimethyl ammonium chloride weighed in the step 1 into the solution, and stirring for 20min to obtain a hexadecyl trimethyl ammonium chloride solution;
and 4, adding the OP-10 solution obtained in the step 2 into a hexadecyl trimethyl ammonium chloride solution, stirring for 10min, adding 30kg of sodium salicylate, stirring uniformly, adding sodium hydroxide to adjust the pH value to 11, and filling to obtain the cleaning wax remover.
Example 2
The invention provides a preparation method of a clean paraffin remover for oil fields, which is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 100kg of OP-10, 60kg of hexadecyl trimethyl ammonium chloride, 100kg of ethanol, 20kg of sodium salicylate and 720kg of water, wherein the total weight percentage of the components is 100 percent;
step 2, adding 100kg of OP-10 weighed in the step 1 into 500kg of water, and stirring for 40min to dissolve the OP-10 to obtain an OP-10 solution;
step 3, adding 100kg of ethanol weighed in the step 1 into the rest 220kg of water to obtain an ethanol solution, adding 60kg of hexadecyl trimethyl ammonium chloride weighed in the step 1 into the solution, and stirring for 15min to obtain a hexadecyl trimethyl ammonium chloride solution;
and 4, adding the OP-10 solution obtained in the step 2 into a hexadecyl trimethyl ammonium chloride solution, stirring for 10min, adding 20kg of sodium salicylate, stirring uniformly, adding sodium hydroxide to adjust the pH value to 11, and filling to obtain the cleaning wax remover.
Example 3
The invention provides a preparation method of a clean paraffin remover for oil fields, which is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: OP-10 of 50kg, cetyltrimethylammonium chloride of 150kg, ethanol of 150kg, sodium salicylate of 40kg and water of 610kg, wherein the total weight percentage of the components is 100%;
step 2, adding 50kg of OP-10 weighed in the step 1 into 500kg of water, and stirring for 40min to dissolve the OP-10 to obtain an OP-10 solution;
step 3, adding 150kg of ethanol weighed in the step 1 into the rest 110kg of water to obtain an ethanol solution, adding 150kg of hexadecyl trimethyl ammonium chloride weighed in the step 1 into the solution, and stirring for 20min to obtain a hexadecyl trimethyl ammonium chloride solution;
and 4, adding the OP-10 solution obtained in the step 2 into a hexadecyl trimethyl ammonium chloride solution, stirring for 10min, adding 40kg of sodium salicylate, stirring uniformly, adding sodium hydroxide to adjust the pH value to 11, and filling to obtain the cleaning wax remover.
Example 4
The invention provides a preparation method of a clean paraffin remover for oil fields, which is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 100kg of OP-10, 150kg of hexadecyl trimethyl ammonium chloride, 150kg of ethanol, 50kg of sodium salicylate and 550kg of water, wherein the total weight percentage of the components is 100 percent;
step 2, adding 100kg of OP-10 weighed in the step 1 into 400kg of water, and stirring for 50min to dissolve the OP-10 to obtain an OP-10 solution;
step 3, adding 150kg of ethanol weighed in the step 1 into the remaining 150kg of water to obtain an ethanol solution, adding 150kg of cetyltrimethylammonium chloride weighed in the step 1 into the solution, and stirring for 20min to obtain a cetyltrimethylammonium chloride solution;
and 4, adding the OP-10 solution obtained in the step 2 into a hexadecyl trimethyl ammonium chloride solution, stirring for 10min, adding 50kg of sodium salicylate, stirring uniformly, adding sodium carbonate to adjust the pH value to 11, and filling to obtain the cleaning wax remover.
Example 5
The invention provides a preparation method of a clean paraffin remover for oil fields, which is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: OP-10 of 50kg, hexadecyl trimethyl ammonium chloride of 30kg, ethanol of 100kg, sodium salicylate of 20kg and water of 800kg, wherein the total weight percentage of the components is 100 percent;
step 2, adding 50kg of OP-10 weighed in the step 1 into 500kg of water, and stirring for 30min to dissolve the OP-10 to obtain an OP-10 solution;
step 3, adding 100kg of ethanol weighed in the step 1 into the remaining 300kg of water to obtain an ethanol solution, adding 30kg of hexadecyl trimethyl ammonium chloride weighed in the step 1 into the solution, and stirring for 10min to obtain a hexadecyl trimethyl ammonium chloride solution;
and 4, adding the OP-10 solution obtained in the step 2 into a hexadecyl trimethyl ammonium chloride solution, stirring for 10min, adding 20kg of sodium salicylate, stirring uniformly, adding sodium carbonate to adjust the pH value to 11, and filling to obtain the cleaning wax remover.
Sampling products according to the above examples 1, 2, 3, 4 and 5 to perform an indoor experiment, performing a paraffin dissolving experiment by using standard paraffin and oil-containing wax samples of different blocks of an extended oil field respectively, weighing 1g of the wax samples to be accurate to 0.001g, controlling the temperature of a constant-temperature water bath to be 45 +/-1 ℃, adding 15mL of the paraffin remover of the invention into a paraffin melting test device, putting the paraffin remover into the water bath, fixing the prepared wax balls on a wax ball supporting rod of the paraffin melting test device after the paraffin remover in the paraffin melting test device is kept at a constant temperature, immersing the wax remover in the wax remover, observing and recording the time t for dissolving the wax balls to be accurate to 1min, wherein the specific results are shown in Table 1:
TABLE 1 wax dissolution Rate test results
As can be seen from Table 1, the paraffin removal agent of the invention has a good paraffin removal effect on the waxy crude oil in different blocks, so that the paraffin removal agent of the invention has the effect of removing wax deposition on oil pipes, thereby reducing the well washing times, increasing the oil production efficiency of oil wells and reducing the oil production cost.
Claims (7)
1. The oil field cleaning paraffin remover is characterized by comprising the following components in percentage by mass: 5 to 10 percent of OP-10, 3 to 15 percent of hexadecyl trimethyl ammonium chloride, 10 to 15 percent of ethanol, 2 to 5 percent of sodium salicylate and 61 to 80 percent of water, wherein the total weight percentage of the components is 100 percent.
2. A preparation method of a clean paraffin remover for oil fields is characterized by comprising the following steps:
step 1, weighing the following components in percentage by mass: 5-10% of OP-10, 3-15% of hexadecyl trimethyl ammonium chloride, 10-15% of ethanol, 2-5% of sodium salicylate and 61-80% of water, wherein the total weight percentage of the components is 100%;
step 2, adding the OP-10 weighed in the step 1 into a part of water, stirring to dissolve the OP-10 to obtain an OP-10 solution;
step 3, adding the ethanol weighed in the step 1 into the rest water to obtain an ethanol solution, adding the hexadecyl trimethyl ammonium chloride weighed in the step 1 into the ethanol solution, and uniformly stirring to obtain a hexadecyl trimethyl ammonium chloride solution;
and 4, adding the OP-10 solution obtained in the step 2 into the hexadecyl trimethyl ammonium chloride solution obtained in the step 3, adding sodium salicylate, stirring uniformly, adding a pH regulator to adjust the pH value, and filling to obtain the cleaning wax remover.
3. The preparation method of the oilfield cleaning paraffin remover according to claim 2, wherein in the step 2, the stirring time is 30-50 min.
4. The preparation method of the oilfield cleaning paraffin remover according to claim 2, wherein in the step 3, the stirring time is 10-20 min.
5. The preparation method of the oilfield cleaning paraffin remover according to claim 2, wherein in the step 3, the mass concentration of the ethanol solution is 31.25-57.7%.
6. The method for preparing the oilfield cleaning paraffin remover according to claim 2, wherein in the step 4, sodium hydroxide or sodium carbonate is adopted as the pH regulator, and the pH value is 11.
7. The preparation method of the oilfield cleaning paraffin remover according to claim 2, wherein the mass ratio of the water in the step 2 to the water in the step 3 is 50: 11-30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111061213.1A CN113604207A (en) | 2021-09-10 | 2021-09-10 | Cleaning paraffin remover for oil field and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111061213.1A CN113604207A (en) | 2021-09-10 | 2021-09-10 | Cleaning paraffin remover for oil field and preparation method thereof |
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| Publication Number | Publication Date |
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| CN113604207A true CN113604207A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111061213.1A Pending CN113604207A (en) | 2021-09-10 | 2021-09-10 | Cleaning paraffin remover for oil field and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152127A (en) * | 2013-05-14 | 2014-11-19 | 中国石油天然气股份有限公司 | Multifunctional cleaning agent for oil fields, preparation method therefor and applications thereof |
| CN105419756A (en) * | 2015-10-28 | 2016-03-23 | 中国石油化工股份有限公司 | Wax removal and inhibition composition, water-soluble wax removal and inhibition agent and preparation method thereof |
-
2021
- 2021-09-10 CN CN202111061213.1A patent/CN113604207A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152127A (en) * | 2013-05-14 | 2014-11-19 | 中国石油天然气股份有限公司 | Multifunctional cleaning agent for oil fields, preparation method therefor and applications thereof |
| CN105419756A (en) * | 2015-10-28 | 2016-03-23 | 中国石油化工股份有限公司 | Wax removal and inhibition composition, water-soluble wax removal and inhibition agent and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 徐勇: ""一种乳液型清防蜡剂的研制及现场应用试验"", 《石油化工应用》 * |
| 杨昭: "《油田化学 第2版》", 31 January 2019 * |
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Application publication date: 20211105 |