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Cement mortar for long cementing segment and large temperature difference salt-gypsum bed well cementation, and preparation method thereof
The invention discloses a cement mortar for long cementing segment and large temperature difference salt-gypsum bed well cementation, and a preparation method thereof, and relates to the field of well cementation engineering in order to solve the problem of poor comprehensive performances of cement mortars in long cementing segment and large temperature difference salt-gypsum beds. The cement mortar comprises 100 parts of oil well cement, 8-15 parts of a high temperature stabilizer, 10-20 parts of a lightening agent, 1-4 parts of a filtrate loss reduction agent, 0.5-2 parts of a dispersant, 0.5-2 parts of a suspension stabilizer, 1-3 parts of a gas channeling prevention agent, 1-3 parts of a strength adjusting agent, 0.5-2 parts of fibers, 77-100 parts of a sodium chloride solution with the mass concentration of 18%, 0.5-2 parts of a set retarder and 0.1-0.3 parts of an antifoaming agent. The cement mortar has the advantages of high temperature resistance, salt resistance and strong gas channeling prevention in the long cementing segment and large temperature difference salt-gypsum beds.
Cement mortar for long cementing segment and large temperature difference salt-gypsum bed well cementation, and preparation method thereof
The invention discloses a cement mortar for long cementing segment and large temperature difference salt-gypsum bed well cementation, and a preparation method thereof, and relates to the field of well cementation engineering in order to solve the problem of poor comprehensive performances of cement mortars in long cementing segment and large temperature difference salt-gypsum beds. The cement mortar comprises 100 parts of oil well cement, 8-15 parts of a high temperature stabilizer, 10-20 parts of a lightening agent, 1-4 parts of a filtrate loss reduction agent, 0.5-2 parts of a dispersant, 0.5-2 parts of a suspension stabilizer, 1-3 parts of a gas channeling prevention agent, 1-3 parts of a strength adjusting agent, 0.5-2 parts of fibers, 77-100 parts of a sodium chloride solution with the mass concentration of 18%, 0.5-2 parts of a set retarder and 0.1-0.3 parts of an antifoaming agent. The cement mortar has the advantages of high temperature resistance, salt resistance and strong gas channeling prevention in the long cementing segment and large temperature difference salt-gypsum beds.
Cement mortar for long cementing segment and large temperature difference salt-gypsum bed well cementation, and preparation method thereof
LU CHENGHUI (author) / LUO HONGWEN (author) / YANG QINGJIANG (author) / ZHANG HAO (author) / TANG YONG (author) / WANG JIE (author) / LI BAODONG (author)
2016-01-27
Patent
Electronic Resource
English
Large-temperature-difference well cementation cement paste and preparation method thereof
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