CN114478275B - High-temperature-resistant clay stabilizer and preparation method thereof - Google Patents

High-temperature-resistant clay stabilizer and preparation method thereof Download PDF

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CN114478275B
CN114478275B CN202011163553.0A CN202011163553A CN114478275B CN 114478275 B CN114478275 B CN 114478275B CN 202011163553 A CN202011163553 A CN 202011163553A CN 114478275 B CN114478275 B CN 114478275B
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clay stabilizer
intermediate product
temperature
preparing
stabilizer according
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CN114478275A (en
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封心领
袁俊秀
王康
徐冬梅
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China Petroleum and Chemical Corp
Research Institute of Sinopec Nanjing Chemical Industry Co Ltd
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Research Institute of Sinopec Nanjing Chemical Industry Co Ltd
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    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C217/00—Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton
    • C07C217/02—Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having etherified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton
    • C07C217/04—Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having etherified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated
    • C07C217/06—Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having etherified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one etherified hydroxy group and one amino group bound to the carbon skeleton, which is not further substituted
    • C07C217/14—Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having etherified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one etherified hydroxy group and one amino group bound to the carbon skeleton, which is not further substituted the oxygen atom of the etherified hydroxy group being further bound to a carbon atom of a six-membered aromatic ring
    • C07C217/18—Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having etherified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one etherified hydroxy group and one amino group bound to the carbon skeleton, which is not further substituted the oxygen atom of the etherified hydroxy group being further bound to a carbon atom of a six-membered aromatic ring the six-membered aromatic ring or condensed ring system containing that ring being further substituted
    • C07C217/20—Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having etherified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one etherified hydroxy group and one amino group bound to the carbon skeleton, which is not further substituted the oxygen atom of the etherified hydroxy group being further bound to a carbon atom of a six-membered aromatic ring the six-membered aromatic ring or condensed ring system containing that ring being further substituted by halogen atoms, by trihalomethyl, nitro or nitroso groups, or by singly-bound oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C213/00—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
    • C07C213/04—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reaction of ammonia or amines with olefin oxides or halohydrins
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
    • C07C41/01—Preparation of ethers
    • C07C41/02—Preparation of ethers from oxiranes
    • C07C41/03—Preparation of ethers from oxiranes by reaction of oxirane rings with hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/41—Preparation of salts of carboxylic acids
    • C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C53/00—Saturated compounds having only one carboxyl group bound to an acyclic carbon atom or hydrogen
    • C07C53/02—Formic acid
    • C07C53/06—Salts thereof
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    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C53/00—Saturated compounds having only one carboxyl group bound to an acyclic carbon atom or hydrogen
    • C07C53/08—Acetic acid
    • C07C53/10—Salts thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C53/00—Saturated compounds having only one carboxyl group bound to an acyclic carbon atom or hydrogen
    • C07C53/122—Propionic acid
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C53/00—Saturated compounds having only one carboxyl group bound to an acyclic carbon atom or hydrogen
    • C07C53/124—Acids containing four carbon atoms
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    • 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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    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
    • C09K8/504—Compositions based on water or polar solvents
    • C09K8/506—Compositions based on water or polar solvents containing organic compounds
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    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/62—Compositions for forming crevices or fractures
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    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/84—Compositions based on water or polar solvents
    • C09K8/86—Compositions based on water or polar solvents containing organic compounds
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating

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Abstract

The invention relates to a high-temperature-resistant clay stabilizer and a preparation method thereof, wherein the preparation method comprises the following steps: (1) Hydroquinone and epichlorohydrin are used as raw materials, and an intermediate product of formula 1 is obtained under the action of a catalyst; (2) The intermediate product 1 and ammonia gas are used as raw materials, an intermediate product 2 is obtained through amination reaction, and then acid is added into the intermediate product 2 to adjust the pH value to 7-9, so that the high-temperature-resistant clay stabilizer is obtained. The clay stabilizer prepared by the invention has good anti-swelling effect and temperature resistance.

Description

High-temperature-resistant clay stabilizer and preparation method thereof
Technical Field
The invention belongs to the technical field of oil extraction engineering, and relates to a temperature-resistant clay stabilizer and a preparation method thereof.
Background
The stratum contains a certain amount of clay minerals, mainly kaolin, montmorillonite, illite, chlorite and the like, and during the development process (water injection, acidification and fracturing) of the oil field, when the clay encounters external water or water-based substances, the clay swells, disperses, moves and plugs pore roar, so that the permeability of the stratum is reduced, and the damage to the low-permeability oil reservoir is more serious. In order to reduce damage to reservoirs, clay stabilizers are often added to the oil field to improve the hydration swelling, dispersion and migration of the clay.
Early use of KCl, NH 4 The simple inorganic salt such as Cl is used as the clay stabilizer, has the defects of large usage amount, certain influence on the performance of well entering liquid, the problems of temperature resistance, acid resistance and the like exist in the last seventy-six century when aluminum hydroxide or zirconium hydroxide is used as the clay stabilizer, and the organic cationic polymer compound is mainly used as the clay stabilizer in the present year, so that the clay stabilizer has the advantages of small usage amount, good performance and long effective period, but has the problem of poor temperature resistance. As in patent CN102786924a, a clay stabilizer prepared by copolymerizing dimethyldiallylammonium chloride and acrylamide is reported to have a good anti-swelling effect; patent CN103571449A discloses a clay stabilizer prepared by reacting epichlorohydrin with short-chain polyquaternium, and has good anti-swelling effect; patent CN103396782a discloses an acidifying clay anti-swelling agent, which is prepared by copolymerizing organic amine and epichlorohydrin, and has good anti-swelling effect; the clay stabilizers introduced above have good anti-swelling effect, good acid and alkali resistance and longer anti-swelling period, but the clay stabilizers are all pure in the temperature resistance which cannot meet the deep use requirements of the current development of oil and gas fields, and the clay stabilizers with the temperature resistance higher than 250 ℃ are required to be developed to meet the production requirements.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and one of the aims is to provide a temperature-resistant clay stabilizer which can prevent clay from expanding and protecting a reservoir in drilling, well completion, production, development, fracturing, water injection and high-temperature steam, and can be used for exploitation of the high-temperature reservoir within 250 ℃. And secondly, a stable preparation method of the temperature-resistant clay is provided.
The aim of the invention is achieved by the following technical scheme: the structural formula of the temperature-resistant clay stabilizer is shown as follows:
wherein n is 1 to 3, R is hydrogen, or C 1 ～C 3 An alkyl group.
The invention also provides a preparation method of the high-temperature-resistant clay stabilizer, which is characterized by comprising the following steps: (1) Hydroquinone and epichlorohydrin are used as raw materials, and an intermediate product of formula 1 is obtained under the action of a catalyst; (2) Taking the intermediate product 1 and ammonia gas as raw materials, obtaining an intermediate product 2 through amination reaction, and then adding acid into the intermediate product 2 to adjust the pH value to 7-9, thus obtaining the high-temperature-resistant clay stabilizer;
formula 1, wherein n is 1 to 3
In the formula 2, n is 1-3.
The catalyst is sodium methoxide.
The mass ratio of the hydroquinone, the epichlorohydrin to the sodium methoxide is 1:2-6:1.
The step (1) is specifically as follows: and (3) sequentially adding hydroquinone, sodium methoxide and an organic solvent into a reaction kettle, introducing nitrogen for protection, heating to a reflux temperature, dropwise adding epichlorohydrin, continuing to react for 2-4 hours after the dropwise adding is finished, and performing suction filtration after the reaction is finished to obtain an intermediate product 1.
The organic solvent is as follows: one or two of ethanol, propanol and acetone.
The mass of the organic solvent accounts for 50-80% of the weight of the total substances in the step (1).
The step (2) is specifically as follows: adding deionized water into the intermediate product 1, introducing ammonia gas, heating to 130-170 ℃, reacting for 3-6 h, and adding acid to adjust the pH value to 7-9 to obtain the high-temperature-resistant clay stabilizer.
The mass ratio of the intermediate product 1 to the deionized water is 1:1-9.
The acid is as follows: formic acid, C 1 ～C 3 One of the fatty acids.
The high-temperature-resistant clay stabilizer is applied to the field of petroleum exploitation, and the addition amount is 1% -2% w/v.
The clay stabilizer prepared by the invention has good anti-swelling effect and temperature resistance.
Detailed Description
For a better understanding of the present invention, the following examples are set forth to illustrate the invention further, but are not to be construed as limiting the invention.
Example 1
Sequentially adding 50.0g of ethanol, 11.0g of hydroquinone and 5.4g of methanol into a reaction kettle, introducing nitrogen for protection, heating to reflux temperature, dropwise adding 18.5g of epichlorohydrin, continuing to react for 2 hours after the dropwise adding is finished, and performing reduced pressure distillation and recrystallization to obtain a purified intermediate product shown as formula 1; adding 10.0g of purified intermediate product into a reaction kettle, adding 10g of deionized water, introducing ammonia gas, reacting for 3 hours at 130 ℃, and adding formic acid to adjust the pH value of the system to 7, thereby obtaining the high-temperature-resistant clay stabilizer.
Example 2
Sequentially adding 50.0g of ethanol, 11.0g of hydroquinone and 5.4g of methanol into a reaction kettle, introducing nitrogen for protection, heating to reflux temperature, dropwise adding 18.5g of epichlorohydrin, continuing to react for 4 hours after the dropwise adding is finished, and performing reduced pressure distillation and recrystallization to obtain a purified intermediate product shown as formula 1; adding 10.0g of purified intermediate product into a reaction kettle, adding 10g of deionized water, introducing ammonia gas, reacting for 4 hours at 170 ℃, and adding formic acid to adjust the pH value of the system to 7, thereby obtaining the high-temperature-resistant clay stabilizer.
Example 3
Sequentially adding 70.0g of ethanol, 11.0g of hydroquinone and 5.4g of methanol into a reaction kettle, introducing nitrogen for protection, heating to reflux temperature, dropwise adding 27.8g of epichlorohydrin, continuing to react for 3 hours after the dropwise adding is finished, and performing reduced pressure distillation and recrystallization to obtain a purified intermediate product shown as formula 1; adding 10.0g of the purified intermediate product into a reaction kettle, adding 20g of deionized water, introducing ammonia gas, reacting for 3 hours at 170 ℃, and adding formic acid to adjust the pH of the system to 9 to obtain the high-temperature-resistant clay stabilizer.
Example 4
Sequentially adding 80.0g of propanol, 11.0g of hydroquinone and 5.4g of methanol into a reaction kettle, introducing nitrogen for protection, heating to reflux temperature, dropwise adding 55.5g of epichlorohydrin, continuing to react for 2 hours after the dropwise adding is finished, and performing reduced pressure distillation and recrystallization to obtain a purified intermediate product shown as formula 1; adding 10.0g of the purified intermediate product into a reaction kettle, adding 90g of deionized water, introducing ammonia gas, reacting for 3 hours at 140 ℃, and adding acetic acid to adjust the pH of the system to 8, thereby obtaining the high-temperature-resistant clay stabilizer.
Example 5
Sequentially adding 60.0g of acetone, 11.0g of hydroquinone and 5.4g of methanol into a reaction kettle, introducing nitrogen for protection, heating to reflux temperature, dropwise adding 37.0g of epichlorohydrin, continuing to react for 4 hours after the dropwise adding is finished, and performing reduced pressure distillation and recrystallization to obtain a purified intermediate product shown as formula 1; adding 10.0g of the purified intermediate product into a reaction kettle, adding 20g of deionized water, introducing ammonia gas, reacting for 3 hours at 130 ℃, and adding propionic acid to adjust the pH of the system to 7 to obtain the high-temperature-resistant clay stabilizer.
Example 6
Sequentially adding 80.0g of ethanol, 11.0g of hydroquinone and 5.4g of methanol into a reaction kettle, introducing nitrogen for protection, heating to reflux temperature, dropwise adding 55.5g of epichlorohydrin, continuing to react for 3 hours after the dropwise adding is finished, and performing reduced pressure distillation and recrystallization to obtain a purified intermediate product shown as formula 1; adding 10.0g of the purified intermediate product into a reaction kettle, adding 30g of deionized water, introducing ammonia gas, reacting for 6 hours at 160 ℃, and adding butyric acid to adjust the pH of the system to 7 to obtain the high-temperature-resistant clay stabilizer.
Example 7
Sequentially adding 80.0g of propanol, 11.0g of hydroquinone and 5.4g of methanol into a reaction kettle, introducing nitrogen for protection, heating to reflux temperature, dropwise adding 46.3g of epichlorohydrin, continuing to react for 4 hours after the dropwise adding is finished, and performing reduced pressure distillation and recrystallization to obtain a purified intermediate product shown as formula 1; adding 10.0g of the purified intermediate product into a reaction kettle, adding 80g of deionized water, introducing ammonia gas, reacting for 3 hours at 150 ℃, and adding formic acid to adjust the pH of the system to 7 to obtain the high-temperature-resistant clay stabilizer.
Example 8
Sequentially adding 80.0g of ethanol, 11.0g of hydroquinone and 5.4g of methanol into a reaction kettle, introducing nitrogen for protection, heating to reflux temperature, dropwise adding 55.5g of epichlorohydrin, continuing to react for 4 hours after the dropwise adding is finished, and performing reduced pressure distillation and recrystallization to obtain a purified intermediate product shown as formula 1; adding 10.0g of the purified intermediate product into a reaction kettle, adding 80g of deionized water, introducing ammonia gas, reacting for 7 hours at 170 ℃, and adding formic acid to adjust the pH of the system to 7, thereby obtaining the high-temperature-resistant clay stabilizer.
Example 9
Sequentially adding 80.0g of ethanol, 11.0g of hydroquinone and 5.4g of methanol into a reaction kettle, introducing nitrogen for protection, heating to reflux temperature, dropwise adding 55.5g of epichlorohydrin, continuing to react for 4 hours after the dropwise adding is finished, and performing reduced pressure distillation and recrystallization to obtain a purified intermediate product shown as formula 1; adding 10.0g of the purified intermediate product into a reaction kettle, adding 80g of deionized water, introducing ammonia gas, reacting for 7 hours at 170 ℃, and adding formic acid to adjust the pH of the system to 9 to obtain the high-temperature-resistant clay stabilizer.
Example 10
0.5g of clay stabilizer sample is weighed, water is added to 100g, a clay stabilizer solution with the concentration of 0.5% is prepared, and the anti-swelling effect of the sample at room temperature and after 24 hours of hot rolling at 250 ℃ is tested according to the method SY/T1994 (2002) for evaluating the performance of clay stabilizer for water injection of the Chinese petroleum and natural gas industry standard, and the test result is shown in table 1.
TABLE 1 anti-swelling results for clay stabilizers
The results show that the clay stabilizer prepared by the invention has good anti-swelling effect and temperature resistance.

Claims (10)

1. A clay stabilizer is characterized by comprising the following molecular structural formula:
wherein n is 1 to 3, R is hydrogen, or C 1 ～C 3 An alkyl group.
2. A method for preparing the clay stabilizer according to claim 1, comprising the steps of: (1) Hydroquinone and epichlorohydrin are used as raw materials, and an intermediate product of formula 1 is obtained under the action of a catalyst sodium methoxide; (2) Taking the intermediate product 1 and ammonia gas as raw materials, obtaining an intermediate product 2 through amination reaction, and then adding acid into the intermediate product 2 to adjust the pH value to 7-9, thus obtaining the high-temperature-resistant clay stabilizer;
in the formula 1, n is 1-3;
in the formula 2, n is 1-3.
3. The method for preparing clay stabilizer according to claim 2, wherein the ratio of hydroquinone, epichlorohydrin and catalyst is 1:2-6:1.
4. The method for preparing a clay stabilizer according to claim 2, wherein the step (1) is specifically: and (3) sequentially adding hydroquinone, sodium methoxide and an organic solvent into a reaction kettle, introducing nitrogen for protection, heating to a reflux temperature, dropwise adding epichlorohydrin, continuing to react for 2-4 hours after the dropwise adding is finished, and performing reduced pressure distillation and recrystallization to obtain an intermediate product 1.
5. The method for preparing clay stabilizer according to claim 4, wherein the organic solvent is: one or two of ethanol, propanol and acetone.
6. The method for preparing clay stabilizer according to claim 4, wherein the mass of the organic solvent is 50-80% of the total mass in the step (1).
7. The method for preparing a clay stabilizer according to claim 2, wherein the step (2) is specifically: adding deionized water into the intermediate product 1, introducing ammonia gas, heating to 130-170 ℃, reacting for 3-6 h, and adding acid to adjust the pH value to 7-9 to obtain the high-temperature-resistant clay stabilizer.
8. The method for preparing a clay stabilizer according to claim 7, wherein a mass ratio of the intermediate 1 to deionized water is 1:1-9.
9. The method for preparing a clay stabilizer according to claim 7, wherein said acid is: formic acid, C 1 ～C 3 One of the fatty acids.
10. Use of a clay stabiliser according to claim 1 in the field of oil exploitation in an amount of 1% to 2% w/v.
CN202011163553.0A 2020-10-27 2020-10-27 High-temperature-resistant clay stabilizer and preparation method thereof Active CN114478275B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104418984A (en) * 2013-09-04 2015-03-18 中国石油化工股份有限公司 High-temperature resistant clay stabilizer and preparation method thereof
CN105061758A (en) * 2015-09-08 2015-11-18 邓万军 Preparation method of dendritic polyquaternium for treating oil-containing waste water
CN106608949A (en) * 2015-10-26 2017-05-03 中国石油化工股份有限公司 Clay stabilizer and preparation method thereof
CN109563269A (en) * 2016-07-14 2019-04-02 Skc株式会社 Aromatic series multi-thioalcohol compound for optical material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104418984A (en) * 2013-09-04 2015-03-18 中国石油化工股份有限公司 High-temperature resistant clay stabilizer and preparation method thereof
CN105061758A (en) * 2015-09-08 2015-11-18 邓万军 Preparation method of dendritic polyquaternium for treating oil-containing waste water
CN106608949A (en) * 2015-10-26 2017-05-03 中国石油化工股份有限公司 Clay stabilizer and preparation method thereof
CN109563269A (en) * 2016-07-14 2019-04-02 Skc株式会社 Aromatic series multi-thioalcohol compound for optical material

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