The present invention discloses a high-temperature resistant cementing
slurry system for 10,000-meter deep wells, relating to the technical field of cementing materials for oil and gas
well engineering. The cementing
slurry system of the present invention comprises the following components, measured by weight: 100 parts of low-heat
Portland cement, 10-20 parts of an anti-abnormal gelling material, 35-55 parts of an enhanced anti-
fading material, 10-20 parts of a suspended fluid loss
reducer, 6-8 parts of a high-temperature fluid loss
reducer, and 2-5 parts of a high-temperature
retarder; wherein the anti-abnormal gelling material comprises, by weight, ulexite:
colemanite: ulexite: chollastone = (40-60): (20-40): (10-20): (5-15). The present invention reduces the hydration rate of the
slurry under high-temperature conditions by limiting the dicalcium
silicate content in the
cement components and reducing the specific surface area of the
cement, thereby suppressing the rapid abnormal gelling of the
cement slurry. The anti-abnormal gelling material, based on the perspective of cement hydration products, addresses the abnormal gelling effect of cement mineral component fluctuations in different batches on the
cement slurry, while also ensuring stable control of other properties of the slurry.