This paper is aimed at the problems of weak cement sheath, weak impact strength, low compressive strength, and low bonding quality in slim-hole cementing. The cement slurry system was improved by edding self-developing elastic emulsion combined with toughening fiber. The authors compared the influence of different toughening materials on the mechanical properties of cement stone. The evaluation results show that the cement slurry system exhibits good rheological properties through the combination of fiber and elastic emulsion. Pumping resistance is small, high temperature and high pressure filter loss is less than 30 mL, slurry is stable, no free water is regestered, the cement stone also shows good shrinkage resistance, and thickening time can be adjusted to 3-5 h. In addition, in terms of mechanical properties, the impact strength of cement stone containing 0.3% carbon fiber + 15% elastic emulsion is greater than 2.2 KJ-m2, the compressive strength at 24 h is greater than 20 MPa, the resistance to gas is 15.6 MPa, and the shear strength is greater than 3.5 MPa. The tensile strength is greater than 300 KPa, which fully meets the requirements of field applications.

中文翻译：

---

单通道细孔纤维弹性乳液固井浆体系的制备及性能

本文针对小井眼固井中水泥环弱、冲击强度弱、抗压强度低、胶结质量低等问题进行研究。通过掺入自发弹性乳液结合增韧纤维改进水泥浆体系。作者比较了不同增韧材料对水泥石力学性能的影响。评价结果表明，通过纤维与弹性乳液的结合，水泥浆体系表现出良好的流变性能。泵送阻力小，高温高压滤失量小于30mL，浆液稳定，无游离水重新注册，水泥石也表现出良好的抗收缩性，稠化时间可调整为3-5h。此外，在机械性能方面，含0.3%碳纤维+15%弹性乳液的水泥石冲击强度大于2.2KJ-m2，24h抗压强度大于20MPa，抗气性15.6MPa，剪切强度更大大于 3.5 兆帕。抗拉强度大于300KPa，完全满足现场应用要求。