Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing oil well cementing test block resistant to high temperatures and high pressures from silicozirconium ceramic microspheres
The invention provides a method for preparing an oil well cementing test block resistant to high temperatures and high pressures from silicozirconium ceramic microspheres. The method comprises the preparation of silicozirconium closed-pore hollow ceramic microspheres, burdening, blending and stirring for slurry mixing. Specifically, the method comprises the steps that 55-65wt% of G-grade oil-well cement, 25-35wt% of silicozirconium closed-pore hollow ceramic microspheres having the particle size of 10-50 microns, 5-7wt% of coal ash having the ignition loss of 1.1% and the particle size of 20-50 microns, 1.5-2wt% of calcium oxide having the purity of 99.9%, 0.5-1.0wt% of sodium sulfate, and 1-3wt% of micro-silicon having the particle size of 5-20 microns are mixed to obtain a mixture; the mixture is mixed with water in the water cement ratio of 0.5-0.7 to obtain the slurry; the slurry is poured into a group of two test molds which are 53mm long, 53mm wide and 53mm high, and maintained in a constant-temperature water bath curing box at 52 DEG C for 24 hours and 48 hours, respectively; next, the stripped product is soaked in cold water for 1 hour, and then a performance index test is performed.
Method for preparing oil well cementing test block resistant to high temperatures and high pressures from silicozirconium ceramic microspheres
The invention provides a method for preparing an oil well cementing test block resistant to high temperatures and high pressures from silicozirconium ceramic microspheres. The method comprises the preparation of silicozirconium closed-pore hollow ceramic microspheres, burdening, blending and stirring for slurry mixing. Specifically, the method comprises the steps that 55-65wt% of G-grade oil-well cement, 25-35wt% of silicozirconium closed-pore hollow ceramic microspheres having the particle size of 10-50 microns, 5-7wt% of coal ash having the ignition loss of 1.1% and the particle size of 20-50 microns, 1.5-2wt% of calcium oxide having the purity of 99.9%, 0.5-1.0wt% of sodium sulfate, and 1-3wt% of micro-silicon having the particle size of 5-20 microns are mixed to obtain a mixture; the mixture is mixed with water in the water cement ratio of 0.5-0.7 to obtain the slurry; the slurry is poured into a group of two test molds which are 53mm long, 53mm wide and 53mm high, and maintained in a constant-temperature water bath curing box at 52 DEG C for 24 hours and 48 hours, respectively; next, the stripped product is soaked in cold water for 1 hour, and then a performance index test is performed.
Method for preparing oil well cementing test block resistant to high temperatures and high pressures from silicozirconium ceramic microspheres
GUO ZHIDONG (Autor:in) / CUI XIANGGUANG (Autor:in)
06.05.2015
Patent
Elektronische Ressource
Englisch
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