Novel bottom seal dragging fracturing tool string

• Main Authors: GE BING, QIU XIANQIANG, YU LONG, WANG SHOUQIANG
• Format: Patent
• Language: Chinese; English
• Published: 08.04.2022
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model discloses a novel bottom seal dragging fracturing tool string which comprises an outer slip connector (1), a release (2), a centralizer (3), a spray gun (4), a balance valve (7), a bottom packer (8), a coupling positioner (9) and a guide head (10), and is characterized in that the tool string further comprises a pilot valve (5) and a hydraulic oscillator (6), and the tools are sequentially connected with one another through threads. According to the tool string, a hydraulic oscillator is used for generating axial oscillation by means of liquid flow, static friction force is converted into dynamic friction force, the problem of pipe column bottom dragging is solved, and the pipe column can be lowered deeper. 本实用新型公开了一种新型底封拖动压裂工具串，包括：外卡瓦连接器(1)、丢手(2)、扶正器(3)、喷枪(4)、平衡阀(7)、底部封隔器(8)、接箍定位器(9)、导引头(10)，其特征在于：所述工具串进一步包括先导阀(5)和水力振荡器(6)，以上所述工具依次通过螺纹彼此连接。所述工具串利用水力振荡器靠液流产生轴向振荡，将静摩擦力转换成动摩擦力，解决管柱拖底，使管柱可以更深的下入。