CN-121991294-A - High-temperature-resistant thermal response retarder as well as preparation method and application thereof

Abstract

The invention discloses a high-temperature-resistant thermal response retarder which is prepared by polymerizing 3.5-5.5 parts of acryl glycinamide, 0.05-0.1 part of bisacrylamide monomer and 0.5-2.5 parts of acrylic monomer, and then polymerizing the polymerized acrylic monomer with 28-32 parts of 2-acrylamido-2-methylpropanesulfonic acid, 7-9 parts of acrylic monomer and 3-7 parts of acrylamide monomer. The invention also discloses a preparation method of the composition. The high-temperature-resistant high-temperature-response retarder provided by the invention has better high-temperature stability, can release carboxylate ions in a high-temperature environment to realize retarding in the high-temperature environment, and can recover the released carboxylate ions when the temperature is reduced to realize faster development of cement stone strength in a medium-temperature environment.

Inventors

• WANG BING
• WANG QIKE
• Qi ben
• ZHENG QILIN
• WU DAPENG
• LI JIE
• ZHANG MING

Assignees

• 中国石油集团渤海钻探工程有限公司
• 中国石油天然气集团有限公司

Dates

Publication Date

20260508

Application Date

20241105

Claims (10)

1. 1. The high-temperature-resistant thermal response retarder is characterized by being prepared by polymerizing 3.5-5.5 parts of acryl glycinamide, 0.05-0.1 part of bisacrylamide monomer and 0.5-2.5 parts of acrylic monomer, and then polymerizing the polymerized acrylic monomer with 28-32 parts of 2-acrylamido-2-methylpropanesulfonic acid, 7-9 parts of acrylic monomer and 3-7 parts of acrylic monomer.
2. 2. The high temperature resistant thermal response retarder of claim 1, wherein the bisacrylamide monomer is one or any combination of N, N-methylene bisacrylamide and N, N-vinyl bisacrylamide.
3. 3. The high temperature resistant thermally responsive retarder of claim 1, wherein the acrylic monomer is one or any combination of acrylic acid, itaconic acid, maleic acid, and fumaric acid.
4. 4. The high temperature resistant thermal response retarder of claim 1, wherein the acrylamide monomer is one or any combination of acrylamide and N, N-dimethylacrylamide.
5. 5. A method of preparing a high temperature resistant thermally responsive retarder, the method comprising: (1) Adding 3.5-5.5 parts of acryl glycinamide, 0.05-0.1 part of bisacrylamide monomer and 0.5-2.5 parts of acrylic monomer into water; (2) Heating to 60-80 ℃, and adding 0.06-0.15 part of initiator; (3) After cooling, adding 28-32 parts of 2-acrylamido-2-methylpropanesulfonic Acid (AMPS) and 7-9 parts of acrylic monomers, and adjusting the pH value to 4.2-4.5; (4) 3-7 parts of acrylamide monomer are added, the temperature is raised to 60-80 ℃, and 0.6-0.9 part of initiator is added.
6. 6. The method of claim 5, wherein the bisacrylamide monomer in step (1) is one or any combination of N, N-methylenebisacrylamide and N, N-vinylbisacrylamide.
7. 7. The method of claim 5, wherein the acrylic monomer in step (1) and step (3) is one or any combination of acrylic acid, itaconic acid, maleic acid, and fumaric acid.
8. 8. The method of claim 5, wherein the initiator in step (2) and step (4) is one or any combination of ammonium persulfate and sodium persulfate.
9. 9. The method of claim 5, wherein the acrylamide-based monomer in step (4) is one or any combination of acrylamide and N, N-dimethylacrylamide.
10. 10. Use of the high temperature resistant thermally responsive retarder of any one of claims 1-4 or the high temperature resistant thermally responsive retarder prepared by the method of any one of claims 5-9 in oil and gas field exploration and development.

Description

High-temperature-resistant thermal response retarder as well as preparation method and application thereof Technical Field The invention relates to a high-temperature-resistant thermal response retarder, and a preparation method and application thereof. Technical Field With the increasing depth of oil and gas field exploration and development, the stratum temperature is higher and higher, and in the well cementation construction process, the performance requirement on cement paste is higher and higher, and the requirement on the construction time is also increased. The traditional retarder has a good effect in middle and low temperature use, but when the temperature reaches more than 90 ℃, the traditional retarder can be decomposed at high temperature so as to lose effect, so that the traditional retarder cannot play a role in middle and high temperature environments. In order to solve the application problems of retarder in medium and high temperature environments, scholars at home and abroad have made a great deal of research and attempt, for example, patent CN101698579B forms a high temperature resistant retarder by using raw materials such as hydroxyethylidene diphosphate and the like, the temperature resistance can reach 210 ℃, patent CN103923253B also realizes the high temperature resistance of 150 ℃ by using raw materials such as acrylic ester and the like, and patent CN101368091A realizes the temperature resistance of 230 ℃ by using raw materials such as organic carboxylic acid, organic phosphonic acid and the like. However, in the application process of the high-temperature-resistant retarder at present, the problem of slow development of top strength exists, and the development of top strength is important for long sealing sections and whole-well sealing wells. Disclosure of Invention The present invention has been made in view of the above problems, and has been made to provide a high temperature resistant thermally responsive retarder which overcomes or at least partially solves the above problems and is applied to cement slurry systems to solve the problem of slow development of top strength that occurs with conventional high temperature resistant retarders. The retarder provided by the invention can release carboxylate ions in a high-temperature environment to realize retarding in the high-temperature environment, and the released carboxylate ions are recovered as much as possible when the temperature is reduced to realize rapid development of cement stone strength in a medium-temperature environment. As one aspect of the invention, the invention relates to a high-temperature-resistant thermal response retarder, which is prepared by polymerizing 3.5-5.5 parts of acryloylglycinamide, 0.05-0.1 part of bisacrylamide monomer and 0.5-2.5 parts of acrylic monomer, and then polymerizing the polymerized retarder with 28-32 parts of 2-acrylamido-2-methylpropanesulfonic acid, 7-9 parts of acrylic monomer and 3-7 parts of acrylic monomer. In a specific embodiment, the bisacrylamide monomer is one or any combination of N, N-methylene bisacrylamide and N, N-vinyl bisacrylamide. In a specific embodiment, the acrylic monomer is one or any combination of acrylic acid, itaconic acid, maleic acid, and fumaric acid. In a specific embodiment, the acrylamide-based monomer is one or any combination of acrylamide and N, N-dimethylacrylamide. As another aspect of the present invention, there is provided a method for preparing the above-mentioned high temperature resistant thermally responsive retarder, the method comprising: (1) Adding 3.5-5.5 parts of acryl glycinamide, 0.05-0.1 part of bisacrylamide monomer and 0.5-2.5 parts of acrylic monomer into water; (2) Heating to 60-80 ℃, and adding 0.06-0.15 part of initiator; (3) After cooling, adding 28-32 parts of 2-acrylamido-2-methylpropanesulfonic Acid (AMPS) and 7-9 parts of acrylic monomers, and adjusting the pH value to 4.2-4.5; (4) 3-7 parts of acrylamide monomer are added, the temperature is raised to 60-80 ℃, and 0.6-0.9 part of initiator is added. In a specific embodiment, the bisacrylamide monomer in step (1) is one or any combination of N, N-methylene bisacrylamide and N, N-vinyl bisacrylamide. In a specific embodiment, in step (1) and step (3), the acrylic monomer is one or any combination of acrylic acid, itaconic acid, maleic acid, and fumaric acid. In a specific embodiment, in step (2) and step (4), the initiator is one or any combination of ammonium persulfate and sodium persulfate. In a specific embodiment, the acrylamide-based monomer in step (4) is one or any combination of acrylamide and N, N-dimethylacrylamide. As a further aspect of the invention, it relates to the use of the above-described high temperature resistant thermally responsive retarder in oil and gas field exploration and development. Compared with the prior art, the high-temperature-resistant thermal response retarder provided by the invention has the beneficial effects that: (1) The h