冀东油田钻头选型研究.doc

冀东油田钻头选型应用研究 摘要 冀东油田老爷庙、南堡、高尚堡三油田区块下出现的玄武岩和底砾岩，在施工钻进过程中，结合现场的钻头使用情况及经验，总结分析，进一步做出最优的钻头选型。 本文主要介绍在冀东区块的玄武岩及底砾岩地层钻进中，其特性表现为：地层坚硬难钻，其研磨性较强，蹩跳钻现象明显，钻头使用寿命低，玄武岩地层夹层的不稳定性，导致易塌易漏等一系列复杂问题。为提高钻井质量和机械钻速、降低钻井成本，避免出现钻井施工的安全问题。先分析冀东油田特定的区域地质概况，及存在底砾岩及玄武岩的夹层，研究分析底砾岩和玄武岩的研磨性和可钻性，结合井队现场资料，对已使用过的钻头和邻井使用过的不同的钻头的机械钻速作效果分析，及相关的钻进工艺经验总结。然后结合理论知识，根据钻头选型通用的方法来选取最优钻头，对现场用过的钻头系列做理论分析，找出得出其钻头断齿和磨损的原因，主要是钻头选型不对，钻头过软，并提出其相应对策。最后提出与底砾岩和玄武岩相匹配的钻头，在该区块使用MD系列钻头比用HJ系列钻头效率要高，并且在施工工艺上，要采取低钻速、高钻压并根据地层岩性变化灵活调整。泥浆调配也应合理，实时根据地层变化及时调整其密度，防止玄武岩层吸水膨胀后坍塌。此外，常见的断齿情况主要是钻头偏软，还应与相关的科研单位合作，研究出该地层的专用硬钻头，为以后遇到类似的地层钻进及钻头选型提供一定的指导作用。 关键词：冀东油田 玄武岩 底砾岩 钻头磨损 钻头选型 经验总结 Abstract  Jidong Laoyemiao Oilfield, South Fort, noble fort under three oil blocks at the end of the basalt and conglomerate, into the construction process, combined with the drill-site usage and experience, summed up and analyzed, and further to make the best bit Selection.  This paper mainly introduces the basalt blocks in the Jidong and stratigraphic drilling in the basal conglomerate, and its properties as follows: Formation of hard difficult drilling, grinding its highly noticeable limp jump drill, drill bits of low life, basalt stratigraphy of the non-laminated stability, resulting in easy to easy to leak such as the collapse of a series of complex issues. In order to enhance the quality and drilling penetration rate and reduce drilling costs, drilling operation to avoid the security issues. Jidong Oilfield first analysis of the specific geology of the region, and the existence of basal conglomerate and basalt of the mezzanine, research and analysis at the end of conglomerate and basalt of the grinding and drilling, the combination of well-site team information has been used to drill and o well used bit different for the effect of penetration rate analysis, and related experience in drilling technology. Combination of theoretical knowledge and then, according to bit selection methods commonly used to select the best bits, dril