The utility model discloses a new type sealing head group, involved in oil drilling and sealing technology tools, including guide tube, plate, O type sealing ring and a sealing head, between the guide cylinder is located on the O line between the sealing ring and the sealing head is greater than the distance between the drill throat and the sealing head and the distance. O type sealing ring is arranged in the sealed coring tool connecting sleeve core claw assembly, and the connecting sleeve connection seal formation. The utility model can not damage the sealing ring, and can not cause the difficulty of entering the heart and the condition of blocking the heart, and the work efficiency is improved, and the whole coring process can be ensured safely and effectively.
【技术实现步骤摘要】
【技术保护点】
1.一种新型密封头组,包括导向筒,挡板,O型密封圈和密封头,其特征在于:位于O行密封圈和密封头之间的导向筒的距离大于钻头喉部与密封头之间的距离,且所述O型密封圈位于密闭取心工具的岩心爪组合件的连接套内,并所述连接套形成密封连接。
【技术特征摘要】
【专利技术属性】
技术研发人员:陈立,刘彬,胡畔,邓元洲,王军,
申请(专利权)人:中国石油集团川庆钻探工程有限公司,
类型:实用新型
国别省市:90
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