Southwest Petroleum University

Yao Bai Special Cement Technology Research and Development Co., Ltd.

Mingze Li

Chunmei Zhang

Xiaowei Cheng

Xiaoyang Guo

Kaiqiang Liu

Kaiyuan Mei

Ping Wang

Baozhen Tian

Bibo Dai

Baoyu Lv

Yuanpeng Wu

Jingxuan Cai

Cai Jingxuan

Panpan Li

Baoyang Ke

Xiaoyue Su

Zheng Xi

Jia Wang

Song Yang

Fei Gao

Hao Xu

Ping Xu

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.

Method for preparing heat-conductive cement slurry for well cementation

A preparation method of the microcapsules for low-temperature well cementation to be used to control cement hydration heat includes: (S1) a shell material, and added into deionized water, then the resultant mixture being stirred in a thermostat water bath so as to completely dissolve it into a homogeneous and stable shell material solution; (S2) a core material and an emulsifier being put into a three-necked flask and stirred in a thermostat water bath so as to uniformly emulsify and disperse them, forming a stable oil-in-water core material emulsion, while adjusting the pH value of the emulsion with a pH adjuster; (S3) the three-necked flask containing the core material emulsion being transferred to a water bath, and then the shell material solution being dropwise added into it with stirring, after reacting, a solid-liquid mixture being poured out so as to naturally cool it to room temperature.

Preparation method of the microcapsules for low-temperature well cementation to be used to control cement hydration heat

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Chengdu, China

Mingze Li