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High-temperature large-temperature-difference early-strength low-density well cementation cement slurry and preparation method thereof
The invention discloses high-temperature large-temperature-difference early-strength low-density well cementation cement slurry and a preparation method thereof, and relates to the technical field of oil and gas well cementation. The well cementation cement slurry comprises the following components in parts by mass: 100 parts of oil well cement; 15-35 parts of a high-temperature strength stabilizer; 10-30 parts of a lightening agent; 0.2 to 0.6 part of an early strength agent; 0.3 to 0.7 part of a high-temperature suspension stabilizer; 1-5 parts of a high-temperature fluid loss agent; 0.3 to 0.7 part of a high-temperature retarder; and 50-70 parts of water. The problems that in the prior art, large-temperature-difference low-density cement paste is poor in rheological property, too large in water loss, poor in high-temperature stability, slow in strength development and the like are solved, safe well cementation construction of a long-sealing-section easy-leakage stratum is achieved, and therefore efficient and safe exploitation of deep stratum oil and gas resources is guaranteed.
本发明公开了一种高温大温差早强低密度固井水泥浆及其制备方法，涉及油气井固井领域技术领域。所述固井水泥浆包括按质量份数计的以下组分：油井水泥100份；高温强度稳定剂15～35份；减轻剂10～30份；早强剂0.2～0.6份；高温悬浮稳定剂0.3～0.7份；高温降失水剂1～5份；高温缓凝剂0.3～0.7份；水50～70份。本发明解决了现有技术中大温差低密度水泥浆存在流变性能差、失水量过大、高温稳定性差、强度发展缓慢等问题，实现对长封固段易漏地层的安全固井施工，从而保障深部地层油气资源的高效安全开采。
High-temperature large-temperature-difference early-strength low-density well cementation cement slurry and preparation method thereof
The invention discloses high-temperature large-temperature-difference early-strength low-density well cementation cement slurry and a preparation method thereof, and relates to the technical field of oil and gas well cementation. The well cementation cement slurry comprises the following components in parts by mass: 100 parts of oil well cement; 15-35 parts of a high-temperature strength stabilizer; 10-30 parts of a lightening agent; 0.2 to 0.6 part of an early strength agent; 0.3 to 0.7 part of a high-temperature suspension stabilizer; 1-5 parts of a high-temperature fluid loss agent; 0.3 to 0.7 part of a high-temperature retarder; and 50-70 parts of water. The problems that in the prior art, large-temperature-difference low-density cement paste is poor in rheological property, too large in water loss, poor in high-temperature stability, slow in strength development and the like are solved, safe well cementation construction of a long-sealing-section easy-leakage stratum is achieved, and therefore efficient and safe exploitation of deep stratum oil and gas resources is guaranteed.
本发明公开了一种高温大温差早强低密度固井水泥浆及其制备方法，涉及油气井固井领域技术领域。所述固井水泥浆包括按质量份数计的以下组分：油井水泥100份；高温强度稳定剂15～35份；减轻剂10～30份；早强剂0.2～0.6份；高温悬浮稳定剂0.3～0.7份；高温降失水剂1～5份；高温缓凝剂0.3～0.7份；水50～70份。本发明解决了现有技术中大温差低密度水泥浆存在流变性能差、失水量过大、高温稳定性差、强度发展缓慢等问题，实现对长封固段易漏地层的安全固井施工，从而保障深部地层油气资源的高效安全开采。
High-temperature large-temperature-difference early-strength low-density well cementation cement slurry and preparation method thereof
一种高温大温差早强低密度固井水泥浆及其制备方法
LIU HUAN (author) / XUE YUANTAO (author) / GU ANLIN (author) / ZENG XUELING (author) / ZHANG YANGYONG (author)
2024-12-10
Patent
Electronic Resource
Chinese
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