径向水平钻孔柔性轴打捞工具

Flexible shaft fishing tool for radial horizontal drilling

Abstract

The invention relates to the technical field of radial horizontal drilling, in particular to a flexible shaft fishing tool for radial horizontal drilling. The lower end of an upper connector of the flexible shaft fishing tool is connected with a ball universal joint, and the lower end of the ball universal joint is connected with a lower connector. The ball universal joint is formed by sequentially connecting a plurality of ball nipples, four key grooves are symmetrically formed in the ball end of each ball nipple, four screw holes are symmetrically formed in a ball groove in the other end of each ball nipple, and the four screw holes in the ball groove of each ball nipple are connected with the ball end key grooves of the corresponding ball nipple at the upper end; and every two adjacent ball nipples can be bent and rotated, and the lower end of the lower connector is connected with a fishing barrel body. The flexible shaft fishing tool can successfully fish flexible shafts which fall off, radial drilling construction is not affected after fishing, accident risks are lowered, the labor intensity of operators is reduced, the accident handling period is shortened, and the construction cost is lowered.
本发明涉及径向水平钻孔技术领域,特别涉及一种径向水平钻孔柔性轴打捞工具。该装置的上接头下端连接球头万向节,球头万向节下端连接下接头,球头万向节由多个球头短节依次连接而成,球头短节的球头端对称开有四个键槽,球头短节的另一端球头槽内对称开有四个螺钉孔,球头短节的球头槽内四个螺钉孔通过连接销钉与上端的球头短节的球头端键槽相连接,相邻两个球头短节能够弯曲旋转,下接头下端连接打捞筒本体。本发明实现了能够对掉落柔性轴成功打捞,打捞成功后不影响径向钻孔施工,降低了事故风险,减轻作业人员劳动强度,缩短事故处理周期,节约了施工成本。

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