鄂尔多斯盆地致密气水平井固井水泥浆优化及应用

Advances in Fine Petrochemicals(2021)

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Abstract
在固井过程中,水泥浆性能不稳定,影响了固井质量.利用试验的方法,研究分散剂、防气窜剂、缓凝剂、促凝剂加量对水泥浆体系的影响,确定了最优的领浆配方:G级水泥+现场水+0.5%分散剂+0.5%防气窜剂+2.25%降失水剂+1.0%早强剂+0.12%缓凝剂+0.2%消泡剂+2%增韧纤维FIB;尾浆配方为:G级水泥+现场水+0.5%分散剂+0.75%防气窜剂+2.25%降失水剂+1.0%早强剂+2.0%促凝剂+0.2%消泡剂+2%增韧纤维FIB.现场作业表明,优化后的固井水泥浆可以有效解决目前存在的问题,提高固井质量.
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