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Retarder for ultra-deep well high-temperature-resistant well cementation cement as well as preparation method and application of retarder
The invention discloses a retarder for ultra-deep well high-temperature-resistant well cementation cement as well as a preparation method and application of the retarder, and relates to the technical field of well cementation materials in oil and gas development, and the retarder comprises the following components in percentage by weight: 30-40% of disodium 1-hydroxyethylidene-1, 1-diphosphate; 20 to 30% of pentasodium diethylene triamine pentaacetate; 5-10% of monopotassium phosphate; 10-20% of sodium potassium tartrate tetrahydrate; meanwhile, the invention provides a preparation method of the retarder, the obtained retarder can be used in high-temperature and high-pressure stratum environments of deep stratums such as deep wells, ultra-deep wells and myriameter deep wells, the thickening time of well cementation cement can be prolonged in the high-temperature environment, and the hardened set cement cannot be greatly influenced in mechanical property. Therefore, the excellent engineering performance of the well cementation cement paste in the ultra-deep well under the high-temperature environment is ensured.
本发明公开了一种超深井耐高温固井水泥用缓凝剂及其制备方法、应用，涉及油气开发中固井材料技术领域，缓凝剂按重量百分比计包括下述组分：羟基亚乙基二磷酸二钠30‑40%；二亚乙基三胺五乙酸五钠20‑30%；磷酸二氢钾5‑10%；酒石酸钾钠10‑20%；改性多酚类多元聚合物15‑25%，同时提出了缓凝剂的制备方法，得到的缓凝剂可用于深井、超深井和万米深井等深部地层高温高压的地层环境中，能在高温环境下延长固井水泥的稠化时间，且对硬化后的水泥石不会造成较大的力学性能影响，从而保证超深井中高温环境下固井水泥浆优良的工程性能。
Retarder for ultra-deep well high-temperature-resistant well cementation cement as well as preparation method and application of retarder
The invention discloses a retarder for ultra-deep well high-temperature-resistant well cementation cement as well as a preparation method and application of the retarder, and relates to the technical field of well cementation materials in oil and gas development, and the retarder comprises the following components in percentage by weight: 30-40% of disodium 1-hydroxyethylidene-1, 1-diphosphate; 20 to 30% of pentasodium diethylene triamine pentaacetate; 5-10% of monopotassium phosphate; 10-20% of sodium potassium tartrate tetrahydrate; meanwhile, the invention provides a preparation method of the retarder, the obtained retarder can be used in high-temperature and high-pressure stratum environments of deep stratums such as deep wells, ultra-deep wells and myriameter deep wells, the thickening time of well cementation cement can be prolonged in the high-temperature environment, and the hardened set cement cannot be greatly influenced in mechanical property. Therefore, the excellent engineering performance of the well cementation cement paste in the ultra-deep well under the high-temperature environment is ensured.
本发明公开了一种超深井耐高温固井水泥用缓凝剂及其制备方法、应用，涉及油气开发中固井材料技术领域，缓凝剂按重量百分比计包括下述组分：羟基亚乙基二磷酸二钠30‑40%；二亚乙基三胺五乙酸五钠20‑30%；磷酸二氢钾5‑10%；酒石酸钾钠10‑20%；改性多酚类多元聚合物15‑25%，同时提出了缓凝剂的制备方法，得到的缓凝剂可用于深井、超深井和万米深井等深部地层高温高压的地层环境中，能在高温环境下延长固井水泥的稠化时间，且对硬化后的水泥石不会造成较大的力学性能影响，从而保证超深井中高温环境下固井水泥浆优良的工程性能。
Retarder for ultra-deep well high-temperature-resistant well cementation cement as well as preparation method and application of retarder
一种超深井耐高温固井水泥用缓凝剂及其制备方法、应用
DU JING (author) / ZHANG YANGYONG (author) / WEI XUEQI (author)
2024-10-18
Patent
Electronic Resource
Chinese
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