Cylindrical thread surface sealing device for petroleum drilling tool
A technology of sealing device and thread surface, which is applied in the direction of drill pipe, drill pipe, drilling equipment, etc., can solve the problems of inability to achieve sealing and low applicability, and achieve the effects of preventing easy loss, easy carrying, and increasing applicability
Pending Publication Date: 2021-03-12
上海海隆石油钻具有限公司
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Problems solved by technology
[0003] The use of drilling tools is involved in the process of petroleum development, and the installation between the drilling tools and various parts is often threaded. In the past, gaskets were used to achieve the sealing effect, but this sealing structure is used when the connecting parts are When the screw structure lacks the nut to compress the gasket, the sealing effect cannot be achieved, so the applicability is relatively low
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[0037] refer to Figure 1-5 , a cylindrical thread surface sealing device for petroleum drilling tools provided by the present invention: comprising a connecting base 1, a threaded rod 2, and a threaded groove 3 provided inside the connecting base 1, the threaded groove 3 cooperates with the threaded rod 2, and the threaded rod The outer surface of 2 is provided with a threaded structure that matches the threaded groove 3, and the threaded rod 2 can be a threaded structure at one end or both ends, corresponding to this, the setting of the pressing plate 7 and the fixing member 5 can make one end or both ends, The upper surface of the base 1 is connected and the limiting groove 4 is provided on the outside of the thread groove 3, and the limiting groove 4 cooperates with the outer contour flange of the sealing member 11 to realize a sealing structure.
[0038] The outer surface of the threaded rod 2 is fixedly connected with a fixing member 5, and the outer surface of the threa...
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The invention discloses a cylindrical thread surface sealing device for a petroleum drilling tool. The cylindrical thread surface sealing device comprises a connecting base, a threaded rod and a threaded groove formed in the connecting base, wherein a threaded structure matched with the threaded groove is arranged on the outer surface of the threaded rod; a limiting groove is formed in the position, located on the outer side of the threaded groove, of the upper surface of the connecting base; a fixing piece is fixedly connected to the outer surface of the threaded rod; the position, located below the fixing piece, of the outer surface of the threaded rod is sleeved with a pressing piece plate; a sealing piece is arranged on the lower surface of the pressing piece plate; an inner sealing piece is arranged in the sealing piece; and a sealing protrusion is arranged on the outer surface of the inner sealing piece. According to the cylindrical thread surface sealing device, when the threaded rod is connected, along with screwing-in of a screw rod, the pressing piece plate and the upper surface of the connecting base extrude the sealing piece, and then the sealing function is achieved; and the position height of the pressing piece plate and the sealing piece is adjusted, the cylindrical thread surface sealing device can adapt to different screwing-in depths of the threaded rod, and then the applicability of the device is improved.
Description
technical field [0001] The invention relates to the field of connecting oil drilling tools, in particular to a cylindrical thread surface sealing device for oil drilling tools. Background technique [0002] Petroleum refers to a mixture of gaseous, liquid and solid hydrocarbons, which has a natural production state. At present, petroleum plays a very important role in various countries. The development of the petroleum industry can promote the economic status of the country. Therefore, for petroleum It is essential to develop. [0003] The use of drilling tools is involved in the process of petroleum development, and the installation between the drilling tools and various parts is often threaded. In the past, gaskets were used to achieve the sealing effect, but this sealing structure is used when the connecting parts are When the screw structure lacks the nut to compress the gasket, the sealing effect cannot be achieved, so the applicability is relatively low. Contents of...
Claims
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Login to View More IPC IPC(8): E21B17/042
CPCE21B17/042
Inventor 高斌强赵梅杨慧喆程大姚挺
Owner 上海海隆石油钻具有限公司