知搜-全球专利检索

  1. 登录
  2. 注册
发明公开
CN105239942A 一种石油钻井螺旋式储球机构 无效 - 撤回

一种石油钻井螺旋式储球机构
摘要：
本发明涉及一种石油钻井工具，特别涉及一种石油钻井螺旋式储球机构。该装置的上接头、储球接头、下接头顺次连接，上接头内安装有球座，储球接头内安装有储球体，储球接头上端内壁上开有凹槽，球座下端抵在储球体上端，球座和储球体能够上下移动，储球体下部套装有弹簧，弹簧上端顶在储球体台阶面上，弹簧下端顶在下接头内台阶面上。本发明实现了可通过立管压力的变化显示球是否落座，储球腔容量大，可连续激发，多次储球，球不占据流道面积，对正常循环不产生影响，可选择性储球，允许小直径球通过。
摘要（英）：

The invention relates to a petroleum drilling tool, in particular to a spiral type ball storage mechanism for petroleum drilling. The spiral type ball storage mechanism is characterized in that the upper connector, the ball storage connector and the lower connector of the mechanism are sequentially connected, a ball seat is mounted in the upper connector, a ball storage body is mounted in the ball storage connector, a groove is formed in the inner wall of the upper end of the ball storage connector, the lower end of the ball seat is abutted against the upper end of the ball storage body, the ball seat and the ball storage body can move up and down, a spring sleeves the lower portion of the ball storage body, the upper end of the spring is abutted against the stepped face of the ball storage body, and the lower end of the spring is abutted against the inner stepped face of the lower connector. The spiral type ball storage mechanism has the advantages that whether a ball falls into the ball seat or not can be displayed by the pressure change of a vertical tube, high ball storage capacity is achieved, continuous excitation and multiple times of ball storage can be achieved, the ball does not occupy flow area, influence on normal circulation is avoided, selective ball storage can be achieved, and small-diameter balls can be allowed to pass.

0/0