高分子聚合物无固相钻井液在煤系水敏性地层的使用效果

摘要

卡伦湖沉积岩煤系地层遇水膨胀、剥落和坍塌，使用聚丙烯腈铵盐聚合物无固相钻井液绳索取心钻进，对水敏性地层起到了有效地抑制作用，既提高钻探效率和质量，又降低孔内事故和减轻劳动强度。%Kalun lake sedimentary rocks in coal series strata encountered water swelling, peeling off and collapse, wire line coring using polyacrylonitrile ammonium salt polymer solid-free drilling lfuid rope, the water sensitive formation is effectively inhibited, which both to improve drilling efifciency and quality, and to reduce the drilling accident and labor intensity.