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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 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.
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 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.
HIGH-STRENGTH PORTLAND CEMENT SLURRY FOR ULTRA-HIGH-TEMPERATURE CEMENTING, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
HOCHFESTE PORTLANDZEMENTSCHLÄMME ZUR ULTRAHOCHTEMPERATURZEMENTIERUNG, HERSTELLUNGSVERFAHREN DAFÜR UND ANWENDUNG DAVON
LAITIER DE CIMENT PORTLAND À HAUTE RÉSISTANCE POUR LA CIMENTATION À ULTRA-HAUTE TEMPÉRATURE, SON PROCÉDÉ DE PRÉPARATION ET SON APPLICATION
ZHANG HUA (author) / JIN JIANZHOU (author) / YU YONGJIN (author) / QU CONGFENG (author) / QI FENGZHONG (author) / XU MING (author) / LIU SHUOQIONG (author) / WANG ZHAOHUI (author) / GUO YUCHAO (author) / LIU JILIANG (author)
2024-08-14
Patent
Electronic Resource
English
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