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Weak-dispersion early-strength retarder for oil well cement and preparation method thereof
The invention discloses a weak-dispersion early-strength retarder for oil well cement and a preparation method thereof, and belongs to the technical field of oil field chemicals and additives for oil well cement well cementation. The weak-dispersion early-strength retarder for the oil well cement comprises the following components in percentage by weight: 5-30% of AMPS, 5-30% of an unsaturated carboxylic acid monomer, 1-10% of acrylamide, 1-15% of a nonionic macromonomer and the balance of water. The weak-dispersion early-strength retarder is high in temperature resistance, and the normal slurry flow state of the cement paste within the range of 100-150 DEG C can be guaranteed; the thickening time has a good dosage linear relation, and the stability of the cement paste and the low-temperature top strength development of set cement are not affected; and the comprehensive performance is good, and the actual construction requirements of high-temperature deep wells and complex wells are met.
本发明公开了一种弱分散早强型油井水泥用缓凝剂及其制备方法，属于油田化学品及油井水泥固井用外加剂技术领域。本发明的一种弱分散早强型油井水泥用缓凝剂，包含以下重量百分比的成分，AMPS 5‑30％、不饱和羧酸单体5‑30％、丙烯酰胺1‑10％、非离子型大单体1‑15％、余量为水。本发明抗温性能强，能够保证水泥浆在100℃～150℃区间内浆体流态正常，稠化时间具有良好的加量线性关系，不会影响水泥浆稳定性以及水泥石低温顶部强度发展，综合性能良好，满足高温深井、复杂井的实际施工需要。
Weak-dispersion early-strength retarder for oil well cement and preparation method thereof
The invention discloses a weak-dispersion early-strength retarder for oil well cement and a preparation method thereof, and belongs to the technical field of oil field chemicals and additives for oil well cement well cementation. The weak-dispersion early-strength retarder for the oil well cement comprises the following components in percentage by weight: 5-30% of AMPS, 5-30% of an unsaturated carboxylic acid monomer, 1-10% of acrylamide, 1-15% of a nonionic macromonomer and the balance of water. The weak-dispersion early-strength retarder is high in temperature resistance, and the normal slurry flow state of the cement paste within the range of 100-150 DEG C can be guaranteed; the thickening time has a good dosage linear relation, and the stability of the cement paste and the low-temperature top strength development of set cement are not affected; and the comprehensive performance is good, and the actual construction requirements of high-temperature deep wells and complex wells are met.
本发明公开了一种弱分散早强型油井水泥用缓凝剂及其制备方法，属于油田化学品及油井水泥固井用外加剂技术领域。本发明的一种弱分散早强型油井水泥用缓凝剂，包含以下重量百分比的成分，AMPS 5‑30％、不饱和羧酸单体5‑30％、丙烯酰胺1‑10％、非离子型大单体1‑15％、余量为水。本发明抗温性能强，能够保证水泥浆在100℃～150℃区间内浆体流态正常，稠化时间具有良好的加量线性关系，不会影响水泥浆稳定性以及水泥石低温顶部强度发展，综合性能良好，满足高温深井、复杂井的实际施工需要。
Weak-dispersion early-strength retarder for oil well cement and preparation method thereof
一种弱分散早强型油井水泥用缓凝剂及其制备方法
LUO QING (author) / LI YONG (author) / TANG CHANGQIANG (author)
2022-02-18
Patent
Electronic Resource
Chinese
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