High-temperature viscosifier for oil well cement slurry and preparation method of high-temperature viscosifier
A technology of oil well cement slurry and viscosifier, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of low high temperature resistance, difficult to meet the pumping pressure of oil well cement slurry, high viscosity, etc., and achieve low cost , large economy and promotion value, the effect of simple production process
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Embodiment 1
[0024]
[0025] The used stabilizer is xanthan gum, the dispersant is polyacrylamide, the fiber is polypropylene fiber (polypropylene fiber), and the filler is attapulgite. The filler was fired at a high temperature of 800°C for 3 hours, then cooled naturally, and all solid-phase materials were blown into the gas mixing device, and mixed 4 times until the mixing was uniform.
[0026] After the above-mentioned high-temperature tackifier is produced, stir it evenly with the cement slurry base slurry according to the following ratio.
[0027]
[0028] Put the liquid phase in the mixing container, turn it with a stirrer at a low speed (4000±200 rpm), and add the weighed cement and all solid phase materials within 15 seconds, cover the lid of the stirrer, and Stirring was continued for 35 seconds at high speed (12000±500 rpm) to prepare cement slurry. Then test the rheological parameters at 160 degrees Celsius in a high-temperature and high-pressure rheometer.
Embodiment 2
[0030]
[0031] The stabilizer used is xanthan gum, the dispersant is polyacrylamide, the fiber is polypropylene fiber (polypropylene fiber), and the filler is attapulgite. The filler was fired at a high temperature of 800°C for 3 hours, then cooled naturally, and all solid-phase materials were blown into the gas mixing device, and mixed 4 times until the mixing was uniform.
[0032] After the above products are produced, stir them evenly with the cement slurry base slurry according to the following ratio.
[0033]
[0034]
[0035] Put the liquid phase in the mixing container, turn it with a stirrer at a low speed (4000±200 rpm), and add the weighed cement and all solid phase materials within 15 seconds, cover the lid of the stirrer, and Stirring was continued for 35 seconds at high speed (12000±500 rpm) to prepare cement slurry. Then test the rheological parameters at 160 degrees Celsius in a high-temperature and high-pressure rheometer.
Embodiment 3
[0037]
[0038] The used stabilizer is xanthan gum, the dispersant is polyacrylamide, the fiber is polypropylene fiber (polypropylene fiber), and the filler is attapulgite. The filler was fired at a high temperature of 800°C for 3 hours, then cooled naturally, and all solid-phase materials were blown into the gas mixing device, and mixed 4 times until the mixing was uniform.
[0039] After the above products are produced, stir them evenly with the cement slurry base slurry according to the following ratio.
[0040]
[0041] Put the liquid phase in the mixing container, turn it with a stirrer at a low speed (4000±200 rpm), and add the weighed cement and all solid phase materials within 15 seconds, cover the lid of the stirrer, and Stirring was continued for 35 seconds at high speed (12000±500 rpm) to prepare cement slurry. Then test the rheological parameters at 160 degrees Celsius in a high-temperature and high-pressure rheometer.
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