Title:
POLYMER, THICKENING AGENT, AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/005769
Kind Code:
A1
Abstract:
The present invention relates to the technical field of oilfield chemistry. Disclosed are a polymer, a thickening agent, and a preparation method therefor. The polymer comprises a structural unit as shown in formula (1), a structural unit as shown in formula (2), a structural unit as shown in formula (3), and a structural unit as shown in formula (4), wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, and R15 are each independently hydrogen or a straight or branched C1-C10 alkyl group; X is a straight or branched C1-C10 alkylene group; and M is hydrogen or an alkali metal. The thickening agent of the present invention has instant solubility and can be used for thickening slickwater, a glue solution, a cross-linked fracturing fluid, and an acid solution having different viscosities, such that the integration of the thickening agent is achieved and the problem of poor compatibility between different fracturing fluids is solved. Various fracturing fluid systems prepared by using the thickening agent have good temperature resistance, shearing resistance, sand-carrying performance, and a slow speed.
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Inventors:
DING SHIDONG (CN)
LIU FANGHUI (CN)
WANG HAITAO (CN)
JIANG TINGXUE (CN)
WEI JUANMING (CN)
YAO YIMING (CN)
SHEN ZIQI (CN)
HUANG JING (CN)
WANG LISHUANG (CN)
LIU FANGHUI (CN)
WANG HAITAO (CN)
JIANG TINGXUE (CN)
WEI JUANMING (CN)
YAO YIMING (CN)
SHEN ZIQI (CN)
HUANG JING (CN)
WANG LISHUANG (CN)
Application Number:
PCT/CN2022/106824
Publication Date:
February 02, 2023
Filing Date:
July 20, 2022
Export Citation:
Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
SINOPEC PETROLEUM ENGINEERING TECH RESEARCH INSTITUTE CO LTD (CN)
SINOPEC PETROLEUM ENGINEERING TECH RESEARCH INSTITUTE CO LTD (CN)
International Classes:
C08F220/56; C08F220/06; C08F220/18; C08F220/30; C08F220/58; C09K8/68
Domestic Patent References:
| WO2015042026A1 | 2015-03-26 | |||
| WO2014055342A1 | 2014-04-10 |
Foreign References:
| CN104946227A | 2015-09-30 | |||
| CN106146730A | 2016-11-23 | |||
| CN112521560A | 2021-03-19 | |||
| CN105860951A | 2016-08-17 | |||
| CN103131404A | 2013-06-05 |
Other References:
MA XIPING; YANG MIAO: "Synthesis and Performance Evaluation of Temperature-controlled Viscous Acid", RUSSIAN JOURNAL OF APPLIED CHEMISTRY, PLEIADES PUBLISHING, MOSCOW, vol. 92, no. 10, 1 October 2019 (2019-10-01), Moscow , pages 1447 - 1457, XP036965037, ISSN: 1070-4272, DOI: 10.1134/S107042721910015X
KHAKPOUR HOSSEIN; ABDOLLAHI MAHDI: "Rheological properties of acrylamide/butyl acrylate/2-acrylamido-2-methyl-1-propane sulfonic acid co- and terpolymers synthesized by heterogeneous and micellar methods", POLYMER BULLETIN, SPRINGER, HEIDELBERG., DE, vol. 74, no. 12, 4 April 2017 (2017-04-04), DE , pages 5145 - 5161, XP036340682, ISSN: 0170-0839, DOI: 10.1007/s00289-017-2009-z
KHAKPOUR HOSSEIN; ABDOLLAHI MAHDI: "Rheological properties of acrylamide/butyl acrylate/2-acrylamido-2-methyl-1-propane sulfonic acid co- and terpolymers synthesized by heterogeneous and micellar methods", POLYMER BULLETIN, SPRINGER, HEIDELBERG., DE, vol. 74, no. 12, 4 April 2017 (2017-04-04), DE , pages 5145 - 5161, XP036340682, ISSN: 0170-0839, DOI: 10.1007/s00289-017-2009-z
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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