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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12509621 B1

PDFFull Text
Date of Patent:
Dec. 30, 2025

Filed:

Apr. 24, 2023

Method for preparing heat-conductive cement slurry for well cementation

Applicants:

Southwest Petroleum University, Chengdu, CN;

Yao Bai Special Cement Technology Research and Development Co., Ltd., Xi′an, CN;

Inventors:

Xiaowei Cheng, Chengdu, CN;

Xiaoyue Su, Chengdu, CN;

Mingze Li, Chengdu, CN;

Panpan Li, Chengdu, CN;

Ping Xu, Chengdu, CN;

Fei Gao, Chengdu, CN;

Cai Jingxuan, Chengdu, CN;

Baozhen Tian, Chengdu, CN;

Baoyu Lv, Chengdu, CN;

Yuanpeng Wu, Chengdu, CN;

Kaiyuan Mei, Chengdu, CN;

Chunmei Zhang, Chengdu, CN;

Assignees:

SOUTHWEST PETROLEUM UNIVERSITY, Chengdu, CN;

YAO BAI SPECIAL CEMENT TECHNOLOGY RESEARCH AND DEVELOPMENT CO., LTD., Xi'an, CN;

Attorney:

MUNCY, GEISSLER, OLDS & LOWE, P.C.

Primary Examiner:

John E Uselding

Int. Cl.
CPC ...
C09K 8/467 (2006.01); C04B 14/02 (2006.01); C04B 24/20 (2006.01); C04B 24/26 (2006.01); C04B 28/02 (2006.01); C04B 40/00 (2006.01); C04B 103/40 (2006.01);
U.S. Cl.
CPC ...
C09K 8/467 (2013.01); C04B 14/024 (2013.01); C04B 24/20 (2013.01); C04B 24/2652 (2013.01); C04B 28/02 (2013.01); C04B 40/0046 (2013.01); C04B 2103/408 (2013.01); C04B 2201/32 (2013.01);
Abstract

A method for preparing heat-conductive cement slurry for well cementation includes the following steps: S1, uniformly mixing sodium 1-butanesulfonate, sodium dodecyl diphenyl ether disulfonate and polyvinylpyrrolidone to obtain an admixture; S2, dissolving the admixture in deionized water and stirring to obtain a dispersant solution; S3, adding graphite to the dispersant solution and stirring to obtain a graphite dispersion; S4, stirring cement and deionized water in a slurry cup to obtain cement slurry; and S5, mixing and stirring the graphite dispersion and the cement slurry to obtain the heat-conductive cement slurry. The heat-conductive cement slurry can effectively improve the heat conductivity coefficient of set cement, and significantly improve the heat conductivity of the set cement, and has a broad market application prospect.

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Cheng, Xiaowei. (2025). Method for preparing heat-conductive cement slurry for well cementation (U.S. Patent No. 12509621). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12509621

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