CN114292635B - High condensate oil resistant and high mineralization resistant environment-friendly foam scrubbing agent and preparation method and application thereof - Google Patents
High condensate oil resistant and high mineralization resistant environment-friendly foam scrubbing agent and preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses an environment-friendly foam scrubbing agent with high condensate oil resistance and high mineralization resistance, which comprises the following raw materials in parts by weight according to 100% of weight: 10-16% of dodecyl glucoside, 3-8% of sodium lauroyl oat amino acid, 5-8% of lauric acid imidazoline, 5-8% of lauric acid monoglyceride and the balance of water. Meanwhile, the invention also discloses a preparation method and application of the foam scrubbing agent. The foam scrubbing agent has excellent foaming performance and stability, high liquid carrying rate, good solubility, high mineralization resistance and high oil condensate resistance under the operation condition of a ground gathering pipeline at the temperature of 0-20 ℃; no toxicity and harm, no special treatment of subsequent sewage, and good environmental protection value.
Description
Technical Field
The invention belongs to the technical field of oilfield chemical additives, and particularly relates to an environment-friendly foam scrubbing agent with high condensate oil resistance and high mineralization resistance, and a preparation method and application thereof.
Background
In the gas field development process, in order to realize effective removal of bottom hole accumulated liquid and normal production of a gas well, foam discharging agent is generally required to be injected into the bottom hole periodically or continuously to be in full contact with the bottom hole accumulated liquid to generate a large amount of stable water-containing foam, so that the liquid carrying capacity of a shaft of the gas well is effectively improved, and the purposes of water drainage and gas production are achieved. However, when the stratum water-containing foam is lifted from the well bore to the ground gathering and transportation pipeline, along with the gradual reduction of the temperature of the natural gas in the ground gathering and transportation pipeline and under the stratum water environment with high condensate oil content and high mineralization degree, for the common foam drainage agent, the water-containing foam is gradually reduced or even disappears under the action of the low shearing speed of the natural gas in the ground gathering and transportation pipeline, and the foam drainage function of the ground gathering and transportation pipeline cannot be realized.
For the foam discharging operation of a ground gathering and transportation pipeline, the foaming capacity and the foam stabilizing capacity of the foam discharging agent are greatly reduced due to the factors of low operation temperature, small natural gas flow rate, high condensate oil, high salinity and the like, so that the problem of failure of the foam discharging agent is caused. The foam scrubbing agent with high condensate oil resistance and high mineralization resistance in the prior art is mainly suitable for a high-temperature environment at the bottom of a well and a gas well containing condensate oil and having high mineralization, cannot be suitable for foam scrubbing operation of a ground gathering and transportation pipeline at 0-20 ℃, and has the defects of poor foaming capacity, small liquid carrying amount and liquid accumulation formed in partial pipelines. Chinese patent CN102965092A discloses a salt-resistant low-temperature foam lifting drainage chemical agent, which has low-temperature resistance, can not be frozen only under low-temperature conditions, but has poor foaming and liquid carrying effects under the environment of 0-20 ℃. Meanwhile, after being injected into a gas well from a gas well shaft, the existing foam discharging agent is conveyed to a gas collecting station and a purification plant through a gathering and conveying pipeline and finally is connected to a sewage treatment plant, and the problems of large sewage treatment load and the like of the foam discharging agent are faced. Therefore, the comprehensive performance and the environmental protection performance of the existing foam discharging agent need to be improved, and the high-efficiency and environment-friendly foam discharging agent with high condensate oil resistance and high mineralization resistance, which is suitable for ground gathering and transportation pipelines, needs to be developed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an environment-friendly foam scrubbing agent with high condensate oil resistance and high mineralization resistance, and a preparation method and application thereof, wherein the foam scrubbing agent can realize good high condensate oil resistance and high mineralization resistance, and still has excellent foaming capacity and foam stabilizing capacity in a ground gathering and transportation pipeline at 0-20 ℃.
The environment-friendly foam scrubbing agent with high condensate oil resistance and high mineralization resistance is prepared from the following raw materials in parts by weight, based on 100% of the weight ratio:
10 to 16 percent of dodecyl glucoside,
3 to 8 percent of lauroyl oat amino acid sodium,
5 to 8 percent of lauric acid imidazoline,
5 to 8 percent of lauric acid monoglyceride,
the balance of water.
Preferably, the environment-friendly foam scrubbing agent is prepared from the following raw materials in parts by weight:
13 percent of dodecyl glucoside,
5 percent of lauroyl sodium avenanthionate,
6 percent of lauric acid imidazoline,
6 percent of lauric acid monoglyceride,
70 percent of water.
Preferably, the environment-friendly foam discharging agent is prepared from the following raw materials in parts by weight:
10 percent of dodecyl glucoside,
8 percent of lauroyl oat amino acid sodium,
5 percent of lauric acid imidazoline,
5 percent of lauric acid monoglyceride,
72 percent of water.
The preparation method of the high condensate oil resistance and high mineralization resistance environment-friendly foam scrubbing agent comprises the following steps:
(1) Respectively weighing dodecyl glucoside, sodium lauroyl oat amino acid, imidazoline laurate, monoglyceride laurate and water;
(2) Under the condition of stirring, adding dodecyl glucoside, sodium lauroyl oat amino acid, lauric acid imidazoline and lauric acid monoglyceride into water in sequence, and stirring at 50 +/-5 ℃ until the mixture is dissolved to obtain the foam scrubbing agent.
The application of the environment-friendly foam scrubbing agent with high condensate oil resistance and high mineralization resistance comprises the following steps: before filling, the foam discharging agent is prepared into an aqueous solution, and then the aqueous solution is injected into a ground gathering pipeline from a well mouth medicine adding port until the mass concentration of the foam discharging agent in the ground gathering pipeline is 0.2-0.5%.
Preferably, the aqueous solution is a foam drainage agent mixed with water in a ratio of 1: (50-100) in proportion.
The invention has the advantages that:
(1) The components of the foam scrubbing agent provided by the invention are all green natural and renewable resources, so that the surface tension of the solution can be effectively reduced, and stable water-containing foam is formed;
(2) The foaming agent has excellent foaming performance and stability under the operation condition of a ground gathering pipeline at 0-20 ℃, high liquid carrying rate, good solubility, high mineralization resistance and high condensate oil resistance;
(3) The foam scrubbing agent is non-toxic and harmless, and subsequent sewage does not need special process treatment, so that the foam scrubbing agent has good environmental protection value.
Detailed Description
Example 1
The environment-friendly foam scrubbing agent with high condensate oil resistance and high mineralization resistance is composed of the following raw materials in parts by weight, calculated according to 100% of weight:
10 percent of dodecyl glucoside,
8 percent of lauroyl oat amino acid sodium,
5 percent of lauric acid imidazoline,
5 percent of lauric acid monoglyceride,
72 percent of water.
The preparation method of the foam scrubbing agent comprises the following steps:
(1) Respectively weighing dodecyl glucoside, sodium lauroyl oat amino acid, imidazoline laurate, monoglyceride laurate and water;
(2) Under the condition of stirring, adding dodecyl glucoside, sodium lauroyl oat amino acid, imidazoline laurate and monoglyceride laurate into water in sequence, and stirring at 50 +/-5 ℃ until the mixture is dissolved to obtain the foam scrubbing agent.
Example 2
The environment-friendly foam scrubbing agent with high condensate oil resistance and high mineralization resistance is prepared from the following raw materials in parts by weight, based on 100% of the weight ratio:
13 percent of dodecyl glucoside,
5 percent of lauroyl oat amino acid sodium,
6 percent of lauric acid imidazoline,
6 percent of lauric acid monoglyceride,
70 percent of water.
The preparation method of the foam scrubbing agent is the same as that of example 1.
Example 3
The environment-friendly foam scrubbing agent with high condensate oil resistance and high mineralization resistance is composed of the following raw materials in parts by weight, calculated according to 100% of weight:
16 percent of dodecyl glucoside,
3 percent of lauroyl sodium avenanthionate,
8 percent of lauric acid imidazoline,
8 percent of lauric acid monoglyceride,
65% of water.
The preparation method of the foam scrubbing agent is the same as that of the embodiment 1.
Example 4
The environment-friendly foam scrubbing agent with high condensate oil resistance and high mineralization resistance is prepared from the following raw materials in parts by weight, based on 100% of the weight ratio:
12 percent of dodecyl glucoside,
5 percent of lauroyl oat amino acid sodium,
6 percent of lauric acid imidazoline,
7 percent of lauric acid monoglyceride,
70 percent of water.
The preparation method of the foam scrubbing agent is the same as that of the embodiment 1.
Example 5
The application of the environment-friendly foam scrubbing agent with high condensate oil resistance and high mineralization resistance comprises the following steps: before filling, preparing the foam scrubbing agent into an aqueous solution, wherein the aqueous solution is prepared by mixing the foam scrubbing agent and water according to the ratio of 1: (50-100), and then injecting the mixture into a ground gathering pipeline from a wellhead medicine adding port; until the mass concentration of the final foam discharging agent in the ground gathering pipeline is 0.2-0.5%.
Comparative example 1
The foam scrubbing agent comprises the following raw materials in parts by weight, based on 100% of the weight ratio:
10 percent of dodecyl glucoside,
8 percent of lauroyl oat amino acid sodium,
5 percent of cocoyl propyl hydroxy sulfobetaine,
5 percent of lauric acid monoglyceride,
72 percent of water.
The preparation method is the same as example 1.
Comparative example 2
The foam scrubbing agent comprises the following raw materials in parts by weight, based on 100% of the weight ratio:
10 percent of dodecyl glucoside,
8 percent of lauryl sodium sulfate,
5 percent of cocoyl propyl hydroxy sulfobetaine,
5 percent of fatty alcohol-polyoxyethylene ether,
72 percent of water.
The preparation method is the same as example 1.
Comparative example 3
Example 1 of chinese patent (CN 102965092A).
Performance detection
According to the following steps of 1:100, mixing the prepared foam discharging agent with water to prepare an aqueous solution, mixing the aqueous solution with gas well produced water (condensate oil content is 20%, and mineralization is 300 g/L) until the content of the foam discharging agent is 0.28wt%, performing a foam discharging performance test according to a standard of SY/T6465-2000 evaluation method for foam foaming agent for foam discharging gas production, determining the initial foaming height of the foam discharging agent and the foam height after 5 minutes, simultaneously continuously introducing 4000mL/min of nitrogen into the aqueous solution of the foam discharging agent, and determining the foam carrying capacity within 15 minutes, wherein the results are as follows:
Claims (6)
1. the environment-friendly foam scrubbing agent with high condensate oil resistance and high mineralization resistance is characterized by comprising the following components in parts by weight: the composition comprises the following raw materials in parts by weight, calculated according to the weight ratio of 100%:
10 to 16 percent of dodecyl glucoside,
3 to 8 percent of lauroyl oat amino acid sodium,
5 to 8 percent of lauric acid imidazoline,
5 to 8 percent of lauric acid monoglyceride,
the balance of water.
2. The high condensate oil and hypersalinity resistant environmentally friendly foam scrubbing agent as claimed in claim 1, wherein: the composition is characterized by comprising the following raw materials in parts by weight:
13 percent of dodecyl glucoside,
5 percent of lauroyl oat amino acid sodium,
6 percent of lauric acid imidazoline,
6 percent of lauric acid monoglyceride,
70 percent of water.
3. The high condensate oil and hypersalinity resistant environmentally friendly foam scrubbing agent as claimed in claim 1, wherein: the composition is characterized by comprising the following raw materials in parts by weight:
10 percent of dodecyl glucoside,
8 percent of lauroyl sodium avenanthionate,
5 percent of lauric acid imidazoline,
5 percent of lauric acid monoglyceride,
72 percent of water.
4. The method for preparing the high condensate oil resistance and high mineralization degree resistant environment-friendly foam scrubbing agent as claimed in claim 1, 2 or 3, is characterized in that: the method comprises the following steps:
(1) Respectively weighing dodecyl glucoside, sodium lauroyl oat amino acid, imidazoline laurate, monoglyceride laurate and water;
(2) Under the condition of stirring, adding dodecyl glucoside, sodium lauroyl oat amino acid, imidazoline laurate and monoglyceride laurate into water in sequence, and stirring at 50 +/-5 ℃ until the mixture is dissolved to obtain the foam scrubbing agent.
5. The use of the high condensate oil and hypersalinity resistant environmentally friendly foam discharging agent as claimed in claim 1, 2 or 3 in foam discharging operation of ground gathering pipelines, characterized in that: before filling, the foam discharging agent is prepared into an aqueous solution, and then the aqueous solution is injected into a ground gathering pipeline from a well mouth medicine adding port until the mass concentration of the foam discharging agent in the ground gathering pipeline is 0.2-0.5%.
6. Use according to claim 5, characterized in that: the aqueous solution is prepared by mixing a foam scrubbing agent and water according to the ratio of 1: (50-100) in proportion.
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| CN202111382859.XA CN114292635B (en) | 2021-11-22 | 2021-11-22 | High condensate oil resistant and high mineralization resistant environment-friendly foam scrubbing agent and preparation method and application thereof |
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| CN202111382859.XA CN114292635B (en) | 2021-11-22 | 2021-11-22 | High condensate oil resistant and high mineralization resistant environment-friendly foam scrubbing agent and preparation method and application thereof |
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| CN114292635B true CN114292635B (en) | 2022-11-22 |
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| CN115093336B (en) * | 2022-07-15 | 2023-08-11 | 宁波锋成先进能源材料研究院 | Vanilla-based gemini surfactant, and preparation method and application thereof |
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