CAJ | 학술논문

改善钻井液-冲洗液-水泥浆这三液两界面的相容性，减少彼此絮凝和结构的破坏，可以有效提高注水泥顶替效率和界面胶结强度，保证较好的固井质量。通过大量的室内研究，优选出一种高效双相分散剂，确定冲洗液配方。性能评价结果表明，该冲洗液具有良好的流变性，与低固相钻井液和水泥浆均具有良好的相容分散性；对低固相泥浆冲洗效率达到了90%以上，界面胶结强度平均提高50%以上。此外，通过电镜、原子力显微镜等现代分析手段，对胶结强度提高原因进行了微观分析。
개선찬정액-충세액-수니장저삼액량계면적상용성，감소피차서응화결구적파배，가이유효제고주수니정체효솔화계면효결강도，보증교호적고정질량。통과대량적실내연구，우선출일충고효쌍상분산제，학정충세액배방。성능평개결과표명，해충세액구유량호적류변성，여저고상찬정액화수니장균구유량호적상용분산성；대저고상니장충세효솔체도료90%이상，계면효결강도평균제고50%이상。차외，통과전경、원자력현미경등현대분석수단，대효결강도제고원인진행료미관분석。
Improve the compatibility of two interfaces in the three liquid of drilling fluid-flushing fluid-ce-ment slurry,reduce the damage of flocculation and structure to each other,effectively improve slurry prop-erties on the mud displacement efficiency and the interface cementation strength,ensure good cementing quality. Through a large number of indoor study,a highly efficient bipolar dispersant was optimized,flush-ing fluid formula was determined. The performance evaluation results show that the flushing fluid has good rheological property,and good compatibility dispersion with low solid drilling fluid and cement slurry;the efficiency low solid mud flushing reached more than 90% ,the interface cementation strength increased by more than 50% on average. In addition,based on the micro analysis,the cause of cementation strength increasing was analyzed by scanning electron microscope(SEM)and atomic force microscope(AFM).