HIGH-STRENGTH PORTLAND CEMENT SLURRY FOR ULTRA-HIGH-TEMPERATURE CEMENTING, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

A high-strength Portland cement slurry for ultra-high-temperature cementing, a preparation method therefor and an application thereof. In parts by weight, the composition of the cement slurry comprises: 100 parts of Portland cement, 4-6 parts of a high temperature anti-cracking material, 80-105 part...

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Bibliographic Details
Main Authors ZHANG, Xiaobing, LIU, Jiliang, DING, Zhiwei, XIA, Xiujian, LI, Yong, LYU, Bin, QU, Congfeng, GUO, Yuchao, ZHANG, Hua, XU, Ming, JIN, Jianzhou, ZHOU, Chongfeng, YU, Yongjin, QI, Fengzhong, LIU, Shuoqiong, LIU, Zishuai, WANG, Zhaohui, JI, Hongfei, ZHANG, Chi
Format Patent
LanguageEnglish
French
German
Published 20.03.2024
Subjects
ADHESIVES
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
DYES
LIME, MAGNESIA
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:A high-strength Portland cement slurry for ultra-high-temperature cementing, a preparation method therefor and an application thereof. In parts by weight, the composition of the cement slurry comprises: 100 parts of Portland cement, 4-6 parts of a high temperature anti-cracking material, 80-105 parts of a high-temperature reinforcing material, 70-78 parts of water, 0.5-1.5 parts of a dispersant, 1-3 parts of a fluid loss reducer, 0.5-2.5 parts of a retarder and 0.2-0.5 parts of a defoamer; the high-temperature reinforcing material is a combination of acid-washed quartz sand, metakaolin and aluminum sulfate, a combination of acid-washed quartz sand, metakaolin, feldspar and sodium sulfate, or a combination of acid-washed quartz sand, metakaolin, feldspar and calcium nitrite. The cement slurry has the features of having good settling stability, rapid strength development in low temperatures, high compressive strength of cement stone at a high temperature of 600°C, and stable development of long-term high-temperature compressive strength, and satisfying field application requirements of heavy oil fireflooding thermal recovery wells and coal gasification operation wells.
Bibliography:Application Number: EP20210893705