油基钻井液施工工艺技术

发布时间：2018-01-17 16:12

本文关键词：油基钻井液施工工艺技术　出处：《钻采工艺》2017年02期 　论文类型：期刊论文

【摘要】：针对油基钻井液在配制、转换、性能维护、回收、重复利用等施工工艺方面存在的现象及问题,通过室内评价实验、现场施工经验总结等方法开展了相关研究。研究表明,油水两相在较低黏度下充分乳化配制的油基钻井液具有较高的破乳电压值;高剪切速率下配制的油基钻井液具有较高的破乳电压值和较好的流变性;形成了双罐法和单罐法两种现场油基钻井液配制方法;随着油基钻井液中水相比例的增高,油基钻井液的乳化稳定性和流变性变差,可通过降低有机土加量、增加乳化剂加量,实现对低油水比油基钻井液流变和乳化稳定的调控;回收油基钻井液在重复利用前应做好乳化稳定和流变性的优化。形成的油基钻井液施工工艺技术在对现场操作人员具有较好的指导作用。
[Abstract]:Aiming at the problems existing in the construction process of oil-based drilling fluid such as preparation, conversion, performance maintenance, recovery, reuse and so on, the laboratory evaluation experiment was carried out. The research results show that the oil-base drilling fluid prepared with sufficient emulsification at low viscosity has a higher demulsification voltage. The oil-base drilling fluid prepared at high shear rate has higher demulsification voltage and better rheology. Two kinds of on-site oil-base drilling fluid preparation methods were formed: double tank method and single tank method. The emulsification stability and rheology of oil-base drilling fluid become worse with the increase of the proportion of water phase in oil-base drilling fluid, which can increase the amount of emulsifier by reducing the amount of organic soil. Control of rheology and emulsification stability of oil-base drilling fluid with low oil-water ratio; The emulsification stability and rheology optimization should be done before the recovery of oil-base drilling fluid is reused, and the construction technology of oil-base drilling fluid has a good guiding effect on field operators.
【作者单位】：中国地质大学工程技术学院;中国石化石油工程技术研究院;
【基金】：中国石化科技开发重点项目“四川盆地深探井钻完井及测试关键技术研究”(编号:P16084);“高温高密度油基钻井液技术研究”(编号:P15009)
【分类号】：TE254
【正文快照】： 与水基钻井液相比较,油基钻井液具有良好的井壁稳定性、润滑性和抗污染能力等优点,能够解决页岩水平井施工中井壁失稳、摩阻扭矩高等技术难题,随着国内外页岩水平井的开发,掀起了油基钻井液研究及应用的热潮[1-4]。形成了具有不同特点的油基钻井液体系,如无土相油基钻井液、生

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