C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 28/02 (2006.01) E21B 33/13 (2006.01) E21B 33/138 (2006.01) C09K 8/42 (2006.01)
Patent
CA 2549941
Methods of cementing and low density foamed cement compositions therefor are disclosed. A low density foamed cement composition of the invention comprises fly ash comprising calcium oxide or calcium hydroxide, water present in an amount sufficient to form a slurry, a foaming and foam stabilizing surfactant or a mixture of surfactants present in an amount sufficient to facilitate foam and stabilize the foamed cement composition, and sufficient gas to foam the foamed cement composition.
L'invention concerne des procédés de cimentation et des compositions de ciment en mousse basse densité. Cette composition contient des cendres légères composées d'oxyde de calcium ou d'hydroxyde de calcium, de l'eau en quantité suffisante pour créer une pâte liquide, un tensioactif de moussage et de stabilisation de mousse ou un mélange de tensioactifs en quantité suffisante pour faciliter la formation de mousse et stabiliser cette composition de ciment en mousse, et suffisamment de gaz pour faire mousser cette composition.
Balcer Brent P.
Brenneis Darrell Chad
Chatterji Jiten
Cromwell Roger S.
Everett Don M.
Halliburton Energy Services Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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