页岩油合成基钻井液纳米封堵剂制备及评价
Journal of Chengde Petroleum College(2022)
Abstract
为了满足页岩地层微纳米孔隙裂缝封堵的技术需求,研制了合成基钻井液用纳米材料LNS.借助粒径分析、透射电镜等实验表征纳米材料LNS的微观形貌特征,讨论了 LNS对合成基钻井液流变性及滤失性的影响.微孔滤膜封堵实验表明,LNS能够有效封堵微纳米级孔缝,高温高压滤失量降低53.3%,明显减少滤液侵入地层.并利用合成基钻井液封堵前后对岩石强度的影响实验,得出合成基钻井液添加纳米封堵剂后岩石强度可提高25%.
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