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马古-H201CH侧钻水平井,要求φ152.4mm井眼使用φ127mm管柱实现半程固井。针对该井井身结构特殊,常规工具附件难以满足施工要求,超小间隙固井对水泥浆及水泥石的性能要求高,古潜山地层压力系数低漏失严重等难题,通过对井下工具附件的结构和配套设计,抗高温防气窜韧性水泥浆以及防漏型隔离液的使用,科学设计、精细施工,确保了该井固井施工的安全进行,固井质量优质,为辽河油田古潜山深侧钻水平井的开发提供了技术保障。
Magu-H201CH sidetracking horizontal wells, φ152.4mm borehole required φ127mm borehole to achieve half-way cementing. In view of the special well structure of the well, the attachment of the conventional tool is difficult to meet the construction requirements, the requirements of the ultra-small gap cementing for the performance of the cement slurry and the cement stone are high, and the pressure loss of the buried hill formation is low and serious. Structure and supporting design, anti-high temperature anti-gas channeling and toughness of cement slurry and leak-proof isolation fluid use, scientific design, fine construction, to ensure the well cementing construction safety, cementing quality and high quality, for the Liaohe Oilfield buried hill Deep sidetrack horizontal well development provides technical support.