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聚胺钻井液是近年来国外新研究成功的一种强抑制性防塌钻井液,该体系以聚胺为主要的泥页岩抑制剂,实验研究表明聚胺抑制能力较强,对环境无污染。通过对处理剂的筛选和对现场钻井液的评价,优化改进了两套钻井液配方。室内评价实验表明,与原钻井液相比,改进后的聚胺钻井液具有抑制性强、滤失量小、润滑性好和封堵性强的特点。
Polyamine drilling fluid is a kind of strong inhibition anti-collapse drilling fluid successfully researched in foreign countries in recent years. Polyamine is the main shale inhibitor. The experimental research shows that the polyamine has strong inhibition ability and is environment-friendly . Through the screening of the treatment agent and the evaluation of on-site drilling fluid, two sets of drilling fluid formulations were optimized and improved. The indoor evaluation experiments show that, compared with the original drilling fluid, the modified polyamine drilling fluid has the characteristics of strong inhibition, small fluid loss, good lubricity and strong sealing.